Liebert SRH028 User manual

Brand: Liebert

Model: SRH028

Type: User manual

SERVICE MANUAL

English

Cod. 273044

Rev. 25.05.2005

Issued by T.D.Service

HIGH PERFORMANCE AIR COOLED CHILLER

R [004-032]

Caution

It is recommended that:

S the manual is retained for the entire service life of the machine;

S the user reads the manual carefully before carrying out any operations on the machine;

S the machine is used exclusively for the purpose for which it is intended; incorrect use of the machine shall release the

manufacturer from any liability.

This manual has been prepared to enable the end---user to carr y out only those operations that can be done with the panels

closed. Any operations that require the opening of doo rs or equipment panels must be carried out only by qualified person-

nel.

Each machine is equipped with an electric isolating device which allows the operator to work in conditions of safety. This

device must always be used to eliminate risks during maintenance (electric shocks, scalds, automatic restarting, moving

parts and remote control).

The panel key supplied with the unit must be kept by the person responsible for maintenance.

For identification of the unit (model and serial no.) in case of the necessity for assistance or spare parts, read the identification

labels affixed to the outside and inside of the unit.

IMPORTANT: This manual may be subject to modification; for complete and up---to---date information the user should

always consult the manual supplied with the machine.

Index

1-- Introduction 1...............................................................................

1.1 --- Foreword 1....................................................................................

1.2 --- Responsibility 1................................................................................

1.3 --- Inspection 1...................................................................................

1.4 --- General description 1............................................................................

2 -- Preliminary Operations 1....................................................................

2.1 --- Operating limits 1...............................................................................

2.2 --- Sound pressure levels 2.........................................................................

2.3 --- Transport 2....................................................................................

2.4 --- Foundations 2..................................................................................

2.5 --- Service area 2..................................................................................

3 -- Installation 2................................................................................

3.1 --- Aeraulic connections 2..........................................................................

3.2 --- Hydraulic connections 2.........................................................................

3.3 --- Connection of the safety valve discharge 3.........................................................

3.4 --- Electrical connections 4..........................................................................

4 -- Start--Up and Operation 5...................................................................

4.1 --- Initial check 5..................................................................................

4.2 --- First start ---up (or after a long stop) 5...............................................................

4.3 --- Starting and stopping 5..........................................................................

4.4 --- Chillers serving special plants 5...................................................................

4.5 --- Freecooling 5..................................................................................

4.6 --- Microprocessor control 5.........................................................................

5 -- Refrigerant and Oil Charge 5.................................................................

5.1 --- Refrigerant charge 5............................................................................

5.2 --- Oil charge 6...................................................................................

6 -- Safety Devices Settings 6....................................................................

6.1 --- Setting thermostatic expansion valve 7.............................................................

7 -- Maintenance 7..............................................................................

7.1 --- Spare parts 7..................................................................................

7.2 --- Dismantling the unit 7...........................................................................

8 -- Options and Accessories 8...................................................................

8.1 --- Pump set 8....................................................................................

8.2 --- Water chiller with partial heat recovery (20%) 8......................................................

8.3 --- Water chiller with total heat recovery (100%) 8.......................................................

8.4 --- Hydraulic circuit accessories 8....................................................................

8.5 --- Water chill e r with inertia tank 9....................................................................

Ta bl es 10.........................................................................................

Drawings 20......................................................................................

Circuits 35........................................................................................

1 --- Introduction

1.1 --- Foreword

This handbook is aimed atenabling boththe installer and the op-

erator to carry out the correct installation, operation and mainte-

nance of the refrigerating machine, without damaging it or caus-

ing injuries to the relevant staff.

The handbook is thus an aid for the qualified staff in the arrange-

ment of the specific equipmentfor the correct installation,opera-

tion and maintenance in compliance with the local regulatio ns

in force.

The MATRIX R water chillers can be identified as follows:

RH004

Version:

R Radial

Execution:

C Chiller

S Superchiller

Compressor:

H Hermetic Scroll

Cooling C apacity “kW”

Nominal cooling capacity / 10

1.2 --- Responsibility

Liebert Hiross accepts no present or future responsibility for

damage to persons, things or to the machine itself due to opera-

tors’ negligence, failing to comply with the installation, operation

and maintenance instructions of this handbook, failed applica-

tion of the safety norms in force for the system and the qualified

staff charged with the operation and maintenance.

1 . 3 --- I n s p e c t i o n

All units are fully assembled and wired in the manufacturing

plant. Before shipment they are charged with the necessary

quantities of refrigerant and oil and then tested at the operating

conditions normally required by the customer. The machine’s

hydraulic circuit is equipped with drain plugs and open vent

valves; the free--- cooling coils are supplied dry to avoid possible

problems due to frost in the storage period. Immediately inspect

the machine carefully on delivery to check for damage during

transportation or missing components; possible claims must be

made immediately to the carrier and the factory or its representa-

tive.

1 . 4 --- G e n e r a l d e s c r i p t i o n

MATRIX R units with air ---cooled condensers have been de-

signed and manufactured for producing chilled water.

They are also available in versions with a built --- in freecooling

module, in versions with heat recovery for simultaneous heating

of thermal circuit water, with a pump assembly installed on the

machine and/or inertial buffer tank inside the machine; the chill-

ing units can be equipped with several options indicated in the

price list.

The ”MATRIX R” product line has been designed utilising the

state---of---the---art tec hniques available nowadays in the indus-

try, and includes all the components necessary for automatic

and efficient operation.

The Matrix R units are specifically designed for indoor installa-

tion (protected from weather agents), for the connection with

ducts of condensation air in machine intake (if present) and

outlet.

Each unit is completely factor y assembled; after evacuation, the

necessary quantity of refrigerant is added to the refrigerant cir-

cuit(s ) and the unit is tested.

All the unitsare equipped with one or two independent refriger at-

ing circuits, each one composed of: an air ---cooled condenser,

a hermetic Scroll compressor and abraze---welded plateevapo-

rator. The components of the liquid line are the charging valves,

filters--- dryers, solenoid valve, shut--- off valve, moisture indicator

and thermostatic expansion valve.

The hydraulic circuit --- with max. working pressure 5 bar --- is

made up on mod. 004---016 of hydraulic lines both in steel and

flexible EPDM rubber, co nnected by fittings and threaded joints,

on mod. 017--- 032 of carbon steel pipes connected with

groo ved---end (Victaulic) fittings and couplings and include also

a flow switch (optional) and, in the freecooling versions, chilled

water coils and a three---way valve.

The hermetic scroll compressors are complete with the following

protection/safety devices: oil heater (if necessary), electronic

protection monitoring the temperature of the motor windings

and the direction of rotation (the latter may be enclosed in the

electronics of the compressor or external, depending on the

model).

Fans are radial type, with aluminum reverse curved blades and

struct ure, staticall y and dynamically balanced, directly coupled

to a motor with external rotor. It is always available the fan speed

contr ol which normallyis achieved through an adjuster withcon-

tinuous speed modulation.

By simply modifying the parameters (of the Microface micropro-

cessor control), limiting the fan max. rotation speed, it is possible

to change the useful air static pressure (equal to the difference

of the static pressure between the delivery and suction ducts

connected with the unit).

The ”MATRIX R” water chillers are controlled by the ”MICROFA-

CE” microprocessor, managing all the unit operating conditions.

The user can change and/or modify the operating parameters

through the display keyboard installed on the electrical panel.

The electrical control board is equipped with all the safety and

operating devices required for reliable operation. The compres-

sor motors are equipped with protection on all three phases and

are started by three --- pole contactors.

2 --- Preliminary Operations

2.1 --- Operating limits

The units can operate within the indicated operating limits (see

Tab. 6). These limits apply to new machines, subject to correct

install ation and maintenance.

S Ambient air minimum temperature: ---25ûC for Superchiller,

--- 1 0 ûC for Chiller (either Triac or EC fan);

S Maximum outdoor air temperature is in relation to each mod-

el, as indicated in Tab. 6. In any case outdoor temperatures

aver 45ûC are not admitted; such limits are determined by

electrical and electronic components fitted on units;

S Maximum water flow allowed: depending on the pressure

drop corresponding to the required thermal difference (usu-

ally not lower than 3.5ûC --- 4 ûC);

S Minimum allowed water flow: compatible with a sufficient

evaporation temperature, to avoid the intervention of the

safety devices (to be evaluated for a thermal difference not

higher than 8ûC);

S Temperature range of the water exiting the evaporator: 4ûC

--- 1 5 ûC;

S Maximum temperature of the water entering the unit: 20ûC;

higher temperatures are allowed only at the system start---

up and not during normal operation;

S Maximum glycol concentration: 50% (35% with the optional

pump assembly installed on the machine);

S Minimum allowed glycol concentration: depending on the

minimum temperature of the ambient air expected at the

installation site (see Tab. a);

S Maximum difference of air side pressure (between the one

in the delivery duct and the one, possibly negative, in the

coil suction) equal to the max. one indicated in Tab. 9 next

to the max. signal = 10 V set on the microprocessor;

S Maximum pressure of the hydraulic circuit: 5 bar;

S Volt age range for the electric supply: 400 V

---

10%; max.

phase difference: 3%; tolerance on frequency: 1%.

Storage conditions: ---20ûC ÷ 45ûCforallMATRIXRmodels.

2.2 --- Sound pressure levels

The Tab. 7 shows the noise data for the units in standard config-

uration (without pumps), operating continuously and measured

at 1 m from the coil side unit, with ducted air delivery and 50 Pa

of useful static pressur e , in free field conditions.

The highest noise levels are detected for higher useful static

pressures of the air.

Note:

Avoid positioning in areas with possible reverberation of the

sound waves; acoustically insulate both the delivery and the in-

take ducts (if installed); failure to do this can adversely effect the

noise levels.

2 . 3 --- Tr a n s p o r t

S Handle the unit by lifting it with a crane from above;

S The lifting holes are positioned in the frame’s base (when lift-

ing, use spreader bars to protect the sides, see Fig. 3, Fig. 4

and Fig. 5).

Note:

Place the lifting tubes in the holes in the base indicated by ”LIFT

HERE”. Lock the ends of the tubes with the locking pins and

splits pins as shown in Fig. 3 and Fig. 5. As an alternative (on

mod. 004 ---016 only), shackles/hooks (optional) fastened at the

base ends can be used as a lifting system: in this case the lifting

point must be on the vertical line passing through the machine’s

centre of gravity (as indicated in Fig. 4) to prevent any load im-

balance.

The capac ity of the lifting gear must be adequate to lift the load

in question. Check the weight of the units, the capacity of the lift-

ing gear and ropes and the condition and suitability of the afore-

mentioned equipment.

2.4 --- Foundations

S The unit must be placed on a level surface which will support

its weight.

S If necessary, position the unit on suitable anti---vibration sup-

ports that can be supplied as an option (in rubber or spring---

type). Refer to the manual ”Installati on of the spring anti---

vibration supports” for their correct positioning.

S When positioned, level the unit.

Note:

For weight distribution see Fig. 6 and Fig. 7.

Note:

The weights and their distribution refer to standard units without

options; if the pump assembly, or other options are installed on

the machine, add the weights of the installed accessories to

those of the standard units (see Tab. 8).

2.5 --- Service area

S In order to allow free air flow or to enable the ducting installa-

tion and maintenance of the unit, a minimum area must be

left free of obstructions around the unit (see Fig. 1 and

Fig. 2).

S Avoid recirculation of hot air between the outlet and the out-

door intake of the air conveyed in the ducts, otherwise the

unit performance may be impaired or the standard oper-

ation can be interrupted.

3 --- Installation

3.1 --- Aeraulic connections

The Matrix R units are arranged with connection flanges for the

air intake and delivery ducts; if the units are ordered with metal

filters to protect the condensing coils, the connection flanges for

theintakesideductingarenotsupplied,asthereisnoductto

enable the cleaning of such filter.

Connect the ducts fitting flexible joints to prevent transmitting

vibrations and to compensate thermal expansion. Check if the

holes on the walls --- where the intake and delivery ducts are

fitted --- are protected by suitable anti---rain grilles (equipped

with pre---filter like the intake ones) to avoid water or dust to enter

in the chiller.

All fans are adjusted at the same speed, so that it is not necess-

ary to install overpressure dampers next to each fan discharge.

The units are supplied with a setting in the microprocessor for

the max. fan speed of 50 P a useful pressure; set the max. speed

according to the features required by the installation (see

Tab . 9).

The units are supplied with the condensation air discharge up-

wards; during the installation, it is possible to change the posi-

tion of the air discharge opening (with right or left horizontal

direction) by simply inverting the position of the drilled panel

withtheclosedoneoftherequiredside(seesizedrawings).

3.1.1 -- External air temperature probe installation

Install the external air temperature probe (shipped inside the

electric panel), at the end of the air intake duct.

The bulb must be positioned as much outside as possible but

must not be exposed to direct sunlight or weather agents such

as rain or snow. The unit operation could be jeopardized if these

precautions are not applied.

If the intake side duct is not present, fasten the probe in the room

so that it can correctly detect the external temperature of the coil

intake outer air witho utbeing influenced by other externalfactors

(sun rays, rain or snow, other heat or radiation sources , etc.).

3.2 --- Hydraulic connections

3.2.1 -- Hydraulic circuit construction (Fig. a)

The piping must be connected to the chiller. Construct a chille d

water circuit as described below , see Fig. a:

1) Place shut---off valves within the circuit to allow servicing;

2) Install a pump system suitable for the flow rate required at

a pressure head equal to the sum of all the pressure drops

(see project data).

Matrix R chillers can be equipped, upon request, with

pumps having performance as indicated in Tab. 8;

3) Install manometers at the chiller inlet/outlet;

4) Install thermometers at the chiller inlet/outlet;

5) Connect the pipes to the chiller by flexible joints to avoid

transmitti ng vibrations and to balance the thermal expan-

sion; proceed in the same way even if the pump set is out-

side the chiller;

6) It is useful to include a water pressure switch to give an early

warning of low water pressure;

7) Pl ace a mesh filter at the inlets of the pump and water chiller

(Can be supplied as an optional accessory ---Not fitted);

8) Install, at the highest points in the circuit, apparatus which

allows the bleeding of air and possibly the filling of glycol;

9) Place a drain valve at the lowest point in the circuit and im-

mediately at the outlet of the water chiller;

10) Install a water filling set including the following:

a) filling water meter;

b) manometer;

c) non ---return valve;

d) air separator;

e) removable supply tube, which must be disconnected

after each charge/top---up;

11) For maximum protection ensure that all tubing exposed to

low outdoor temperatures is fitted with anti---freeze heaters

and insulated using closed cell synthetic rubber (elasto-

mer);

12) The circuit must include an expansion vessel (with safety

valve) of suitable capacity;

13) Connect the lines avoiding stresses on the machine inner

parts.

Note:

If the water chiller is complete with an expansion vessel (sup-

plied as an option), check if the capacity is enough, and install

a second vessel in the circuit, if required (see par. 8.4).

Follow the indications in Fig. c for the correct sizing.

Note:

The whole circuit must cont ain a water volume suitable for the

capacity of the installed chiller. Check if the inertial capacity giv-

en by the sum of the hydraulic volume inside the machine (in-

cluding the volume of the optional interna tank, if fitted) and the

system volume is sufficient, orpossibly install a tank in the circuit.

Follow the indications in Fig. b for the correct sizing.

Note:

The hydraulic circuit must ensure a co nstant water supply to the

evaporator in every operating conditio n. Otherwise, the com-

pressors may be damaged by repeated returns of liquid refriger-

ant on their suction.

Note:

The water flow switch is a compulsory safety component that

must be installed and correctly wired to the Matrix R chillers,

otherwise the guarantee will be invalidated.

It is installed, as standard, on units with the optional on--- board

pump set, and is available as a option for units without pumps

on board: in the latter case the flow switch, if not installed on the

machine, can be installed on the hydraulic c ircuit by the installer,

butitiscompulsorythatitiswiredtotheelectricpanelterminal

board, as indicated on the wiring diagram.

3.2.2 -- Addition of water and ethylene glycol

Very important:

Add water and ethylene glycol to the circuit with a % depending

on the minimum temperature of the outside air expected at the

installation site. Do not exceed the nominal operating pressure

of the circuit’s components.

Notes:

S To avoid stratification run the circulation pump for at least 30

minutes after adding any glycol .

S After adding water to the hydraulic circuit always discon-

nect the water supply coming from the sanitary supply;

this avoids the danger of glycol entering the sanitary water

system.

S After any topping---up of the water check the concentration

and add glycol if necessary.

3.2.3 -- Water-- glycol mixture

Water---glycol mixtures are used as the thermal carrier fluid in

very cold climates or with temperatures below zero degrees cen-

tigrade. Determine the ethylene glycol % which must be added

to the water, with the assistance of Tab. a.

Tab.a--Ethyleneglycoltobeaddedtowater(%in

weight of total mixture)

Ethylene glycol

(% in weight)

0 10 20 30 40 50

Freezing tempera-

ture, ûC

(*)

0 --- 4 . 4 --- 9 . 9 --- 1 6 . 6 --- 2 5 . 2 --- 3 7 . 2

Mixture density at

20ûC

(*)

,kg/l

--- 1.017 1.033 1.048 1.064 1.080

(*) Values are for Shell antifreeze 402. For different brands, check

manufacturer’s data.

For the chiller int ernal water volume refer to Tab. 1. If the optional

buffer tank is installed on the machine, add the tank hydraulic

volume.

ALWAYS CHARGE THE HYDRAULIC CIRCUIT WITH THE RE-

QUIRED GLYCOL % NECESSARY FOR THE MINIMUM AMBI -

ENT TEMPERATURE AT THE INSTALLATION SITE. FAILING

TO COMPLY WITH THIS INSTRUCTION SHALL INVALIDATE

THE UNIT WARRANTY.

3.3 --- Connection of the safety valve dis-

charge

Safety valves are installed on the high pressure side of the refrig-

eration circuit(s): the discharge of these valves must be con-

veyed outside through a suitable pipe, having a diameter of at

least that of the valve outlet, without burdening the valve body.

Convey the discharge to areas where the jet cannot harm

people and the surrounding environment.

Fig. a -- Ideal chilled water circuit

CHILLER

1 1327436

flow

10e

10d10c10b10a

T T

USER

5 5 9

disconnect af-

ter charge

Vpt

Ta n k

Fig. c -- Sizing of the expansion vessel

The total volume of the expansion vessel is calculated with the following formula:

where:

--- C=quantity of water inside the system expressed in litres

--- e=water expansion coefficient, with water at 10ûC as a reference

--- Pi=absolute pressure of initial charging, equivalent to the vessel pre---charge pressure (typical value

2.5 bara)

--- Pf=absolute final tolerated pressure, lower than the operating pressure of the safety valve calibration

pressure (typical value 4.0 bara).

Use the values of the water expansion coefficient indicated in the table below:

V =

C x e

1 --

Fig. b --Inertia tank sizing

The total optimum hydraulic volume of the system where the Matrix R chiller is installed can be calculated by the

following formula:

where:

--- V=minimum required total water volume expressed in litres

--- Rt=refrigeration capacity expressed in kW

--- Xd=differential band set on the contro l and expressed in degrees centigrade

Please note that the sum of the hydraulic volume of the Matrix R chiller (Vm) plus the volume of the hydraulic circuit

connected to it (Vpc) must be greater than, or equal to the minimum required total water volume (V). If this condi-

tion is not satisfied, it is necessary to install an inertia tank (Vpt, as indicated in the Fig. a) with a volume at least

equal to the following value: Vpt=V ---Vm ---Vpc

V =

43 x Rt

OT[°C] Density [kg/m

] Expansion coefficient “e”

10 999.6 --- --- ---

20 997.9 0.0017

30 995.6 0.0040

40 992.2 0.0075

50 988.1 0.0116

3.4 --- Electric al connections

1) Be fore proceeding with the electrical connections, ensure

that:

S all electrical components are undamaged;

S allterminalscrewsaretight;

S the supply voltage and frequency are in accordance with

the rating (with tolerance in accordance with IEC 8---6

norms, March 1990)

S the allowed phase to phase variability is 3% maximum

(see Fig. d). Variability in excess of 3% invalidates the

guarantee.

2) Supply cable connections (see Tab. 5):

S Connect the cable to the supply terminals.

S Use appropriately sized 3---pole cable. An earth wire

must also be connected.

S After having opened the passage in theframework (pre ---

punched knock---outs) for the supply line entry, restore

the original degree of protection using suitable accesso-

ries for the wiring and junction boxes.

Fig. d -- Example of calculating phase

to phase variability

1) The 400 V supply has

the following variability:

RS = 388 V

ST = 401 V

RT = 402 V

2) The average voltage is:

3) The maximum deviation from the average is:

4) Thephasetophasevariabilityis:

388 + 401 + 402

= 397

397

x 100 = 1.26 (acceptable)

RS T

402 --- 397 = 5 V

Note:

The power supply should never be disconnected, except when

performing maintenance.

Operate (open) the main switch before carrying out any mainte-

nance work on electrical components.

Note:

It is forbidden to work on the electrical components without

using insulating platforms, and in the presence of water or fog

or mist.

Note:

The supply to theexternal pump assembly must be made before

starting the chiller and must be kept on as long as the chiller is

in use. Incorrect operation will cause the unit to lock--- out be-

cause of the internal protections (flow switch intervention).

Note:

The compressors are equipped with an electronic protection de-

vice blocking their start if the phase sequence is not correct, or

stopping their operation if a thermal relay intervenes. This device

is essential for the int egr i ty of the mechanical and electricalcom-

ponents of the compressors. Reset the standard functions by

isolat ing this device and removing the causes of the lo ck---out.

Note:

The chillers are equipped with their own microprocessor control

adjustment. The use of the remote ON --- OFF input (located in

the electric panel terminal board) as a system temperature con-

trol element is forbidden.

4 --- S t a r t --- U p a n d O p e r a t i o n

4.1 --- Initial check

1) Chec k all water connections.

2) Open the shut---off valve on the liquid line.

3) Ensure that the intake pressur e is higher than 4.0 bar; if this

is not the case, prolong pre---heating of the compressor (if

possible) and check that the refrigerant shut ---off valve is

properly sealed, see Fig. 12, Fig. 13, Fig. 14, Fig. 15, Fig. 16

and Fig. 17.

4) Open all isolating valves and/or water ball valves.

5) In case of climates with temperatures below zero degrees C,

make sure the chilled water circuit is filled with the correct

concentration of water/glycol.

6) Bleed all air out of the chilled water circuit.

7) Verify the water flow rate and its direction.

8) Ensure that the thermal load is sufficient for start--- up.

Caution:

The ambient air temperature probe must be positioned in the

shade and protected against the weather.

4 . 2 --- F i r s t s t a r t --- u p

(or after a l ong stop)

Operate as follows:

1) At least 8 hours before the start ---up, power the crank-

case heaters (if any, see point 4) by setting the main iso-

lator switch ON. Make sure the auxiliary circuit has been

powered and check the operation (a fault due to an in-

correct procedure will invalidate the compressor guar-

antee).

2) Open the valves of the refrigeration circuit that had been

closed before the initial check.

3) Check the machinery supplying the thermal load connected

with the unit and start the system pump(s).

4) MAKE SURE THE COMPRESSOR OIL HAS BEENHEATED

FOR AT LEAST 8 HOURS; start the unit only then. In the

units not equipped with crankcase heaters ( Chillers for sum-

mer operation only, without modulating fan speed co ntrol),

the start must be carried out in the warm season only (exter-

nal T > 15ûC), and thus oil pre--- heating is not necess ary.

5) Make sure the fans rotate in the correct direction (anticlock-

wise): check the electrical connections, if necessary.

6) Make sure the pumps rotate in the correct direction.

7) During the unit start ---up an inlet water temperature

higher than 20ûC is allowed. Under standard operating

conditions check that the limits indicated in paragraph

2.1 are not exceeded.

8) Check the correct operation of the control and safety de-

vices.

9) Check the outlet temperature of the chilled water (check if

the set---point set on the controller is reached).

10) Check the compressor oil level.

11) With the compressor at full load, check there are no

bubbles visible in the frefrigerant sight glass. If there are any,

charge the unit according to par. 5.

4.3 --- Starting and stopping

ALWAYS ENSURE THAT THE COMPRESSOR OIL HAS BEEN

PREHEATED.

FOR BRIEF STOPPAGES MAINTAIN THE SUPPLY TO THE

CRANKCASE HEATER (IF ANY).

S Start the unit setting the Microprocessor switch ON.

S Stop the unit setting the Microprocessor switch OFF.

S In case of long stops, turn the machine off using the Micro-

processor switch OFF.

In this case the compressor crankcase heaters (if any) re-

main powered.

S For seasonal shutdown of the unit operat e the main switch

located on the main electrical power supply. This will discon-

nect the compressor crankcase heaters.

4.4 --- Chillers serving special plants

The units are capable of cooling a water --- glycol mixture to tem-

peratures close to 0ûC without the need for significant modifica-

tions. In the case of modification, the set values of the safety and

cont rol components must also be changed. This can be carried

out in the factor y (at the time of testi ng) or at the time of installa-

tion, only by qualified and authorised personnel.

4 . 5 --- F r e e c o o l i n g

The “freecooling” is a system of pre --- cooling and/or cooling the

water/glycol mixture using ambient air when the latter is at a tem-

perature below the return mixture temperature. If the outside

temperature is sufficiently low to dissipate the entire heat load,

the refrigeration compressors automatically switch off, and the

mixture’s temperature is controlled by the fan speed adjust-

ment.

If the mixture temperature is too high for freecooling, the com-

pressors will operate as long as necessary to ensure the correct

water/glycol mixture temperature.

4.6 --- Microprocessor control

Consult the ”Microface and Hiromatic” Service Manual.

5 --- R e f r i g e r a n t a n d O i l C h a r g e

All work on pipes or components of the refrigerating circuit un-

der pressure must be exclusively carried out by qualified staff,

competent in such works.

5 . 1 --- R e f r i g e r a n t c h a r g e

WHILST REPAIRING THE REFRIGERATING CIRCUIT RE-

COVER ALL THE REFRIGERANT IN A CONTAINER: DO NOT

ALLOW IT TO ESCAPE. NEVER USE THE COMPRESSOR

FOR THE SYSTEM VACUUM (THIS INVALIDATES THE

WARRANTY).

S The unit is delivered charged according to the Tab. 2.

W arning for the refrigerant charge:

S Ensure there are no refrigerant leaks.

S Check the refrigerant type in the refrigeration circuit: a unit

originally charged by the manufacturer with R407C cannot

be charged with R22 and vice versa; possibly apply to the

Technical Support Department .

S Charge with the compressor in operation, connecting the

cylinder with the charge connector after the thermostatic ex-

pansion valve.

Flush the connection pipe between the cylinder and the

charging point; tighten the seal joint and then start charging

the unit. It is imperative that the cylinder is weighed both be-

fore and after the operation.

S For the units with R407C the refrigerant charge must be

made exclusively with liquid refrigerant.

S Charge the unit until the bubbles in the sight glass have dis-

appeared and the working conditions of the entire refrigera-

tion circuit have returned to normal (sub---cooling and su-

perheating within the limits indicated below).

S Measure the superheating as follows:

1) Detect the temperature on the suction line, close to the

bulb of the thermostatic expansion valve, using a contact

thermometer.

2) Connect a pressure gauge (by max. a 30---cm pipe) with

the Schraeder connection and read the corresponding

saturated evaporating temperature.

3) The superheating is the difference between the two

readings.

4) For the units with R407C refer to the pressure gauge

scale indicated with the initials D.P. (Dew Point)

S V erify that the superheating is 5ûC --- 8 ûC.

S Measure the sub---cooling as follows:

1) Detect the temperature on the liquid line using a contact

thermometer.

2) Connect a pressure gauge (by max. a 30---cm pipe) with

the Schraeder co nnection on the liquid line and read the

corresponding saturated condensing temperature.

3) The s ub---cooling is the difference between the tworead-

ings.

4) For the units with R407C refer to the pressure gauge

scale indicated with the initials B.P. (Bubble P oint)

S V erify that at the condenser outlet, sub ---cooling is 3ûC ---

5ûC.

IT IS IMPORTANT TO CARRY OUT CHARGING CORRECTLY.

An excess of refrigerant cause s an increase in sub---cool ing and

consequent operating difficulties in the hot season; a shortage

of charge generates an incre ase in superheating and possi ble

compressor stoppages. Whenever work is carried out on the

unit, ensure afterwards that the working conditions are correct,

checking sub---cooling and superheating.

5 . 2 --- O i l c h a r g e

Contact the Technical Support Department for the specifications

of the oil to be used for topping up; the oil changes according to

thetypeofusedrefrigerant.

NEVER MIX DIFFERENT OILS TOGETHER. CLEAN THE PIP-

ING COMPLETELY BEFORE CHANGING THE TYPE OF OIL

USED.

TOP---UPS OF UP TO 20---30% OF THE TOTAL AMOUNT OF

OIL CONTAINED IN THE COMPRESSOR CRANKCASE ARE

PERMITTED; FOR LARGER PERCENTAGES CONTACT THE

TECHNICAL SUPPORT DEPARTMENT.

5.2.1 -- Procedure for oil topping--up

If there has been any loss of oil then this must be topped up as

follows:

1) Take a clean, dry, transparent container (with volume cal-

ibrations) and fill it with at least twice the amount of oil re-

quired.

2) Isol ate the compressor by closing the cock on the liquid line.

3) Connect to the fittings on the compressor body (Schraeder

valves) and empty it of refrigerant until atmospheric pres-

sure (1 bar) is reached.

4) Using a pipe, connect the oil containerto theoil ser vicefitting

on the lower part of the compressor.

5) Open the oil service cock, lifting the co ntainer, so that the oil

flows by gravity.

6) Charge the required quantity of oil (make sure the tube al-

ways remains below the oil level in the container).

7) Stop the oil flow by closing the oil service fitting, open the

shut--- off cock on the refrigerating circuit and restore the

drained refrigerant charge.

6 --- Safety Devices Settings

The water chiller has already been tested and set up by the manufacturer. The following setting values are suggested in the field.

COMPONENT SETTING NOTES

Low pressure switch (LP)

Operation with R407C/R22

(standard factory setting):

START : 3.6 bar

DIFF. : 0.8 bar

STOP : 2.8 bar

bar

0.2

1.5

0.5

bar

diff.set

High pressure switch (HP)

Operation with R407C/R22

(standard factory setting):

STOP : 26 bar

START : 20 bar

DIFF. : 6 bar (fixed)

reset

The settings for the safety valves installed on the machine are indicated below:

MODELS SETTINGS SAFETY VALVE

004---204---206---207---008 28 bar

006---007---011---014---016

017---020---023---025---028---030---032

29 bar

HP side

6.1 --- Setting thermostatic expansion

valve

THIS OPERATION MUST BE PERFORMED BY AN EXPERI-

ENCED REFRIGERATION TECHNICIAN.

Before beginning this adjustment be sure that the refrigerant

charge is correct, checking the the sub --- cooling (3ûC---5ûC, as

specified in par. 5.1).

The valve has already been factory --- set and should be reset

when the superheating is not between 5ûC --- 8 ûC, as follows:

1) Important:

Ensure that the instructions in par. 5.1 have been carried out.

2) Allow the compressor to operate for 15 mins.

3) Measur e the superheating as follows:

a) Connect a manometer to the Schraeder connection lo-

cated on the evaporator outlet tube, and read the mano-

metric temperature on the scale for the refrigerant used

(for the units with R407C refer to the pressure gauge

scale indicated with the initials D.P. = Dew P oint).

b) Using a cont act thermometer, measure the temperature

on the tube coming out of the evaporator, next to the

socket used for the manometer.

c) The superheating is the difference between the two

readings (b ---a).

4) The superheating must be 5ûC---8ûC; if not, set the expan-

sion valve as follows:

a) Remove the protective cover;

b) Turn the adjustment screw to return to the optimum val-

ues, tightening it in a clockwise directio n to increase the

superheating, or slackening it to reduce the superheat-

ing.

c) Wait about 10 minutes;

d) Measure the superheating and repeat the operation if

necessary.

N.B:

If the superheating is too low, there is a risk of poor lubrication

and consequent breakage of the compressor as a result of pres-

sure shock.

If the superheating is too high the output of the syst em is limited

and the compressor overheats.

7 --- Maintenance

The Maintenance Programme below must be carried out by a

qualified technician, preferably working under a maintenance

contract.

Before any intervention on the unit or accessing the inner com-

ponents (removing the outer panels), always ensure the ma-

chine is switched off. If the panels are removed (fans compart-

ment) wait for the fan(s) to come to a complete stop before

accessing the compartment; if the front panels are removed (on

mod. 004---016) or the front lower panels (on mod. 017---032),

pay special attention when working near the compressor upper

part and the discharge line: they are very hot; possibly wait for

them to cool . Be very careful when operating close to the finned

coils, as the fins are very sharp. Do not remove the fan protection

grille before electrically isolating the whole machine. Do not in-

sert foreign matter through the fan protection grille. After the

maintenance interventions, always close the unit with the suit-

able panels, fastened by the tightening system.

7.1 --- Spare parts

The use of original spare parts is recommended.

When placing an order refer to the ”Co mpo nent List” enclosed

with the machine and quote the unit model no. and serial no.

7.2 --- Dismantling the unit

The machine has been designed and built to ensure continuous

operation.

The working life of some of the main components, such as the

fans and the compressors, depends on the maintenance that

they receive.

If the unit has to be dismantled, the job must be done by skilled

refrigeration technicians.

The refrigerant and the lubricating oil in the circuit must be dis-

posedofinconformitywiththelawsinforceinyourcountry.

Maintenance programme -- Monthly check

FANS

S Check that the fan motor rotates freely without any abnormal noise, and ensure that the

bearings are not running hot.

S Also check the current ab sorption.

CONDENSER AND AIR FILTER

S Check the conditions of the filters (if they are supplied); if necessary clean them (including

the electrical panel ventilation filter).

S Check the condenser coils and clean if necessary with compressed air or soft brushes.

CONTROL S Check that the control equipment, LEDs and display are operating correctly.

ELECTRICAL CIRCUIT

S Check the electrical supply on a ll phases.

S Ensure that all electrical connections are tight.

REFRIGERATION CIRCUIT

S Check the condensing and the evaporating pressures (to be done by a refrigeration techni-

cian).

S Check the compressor’s current absorption, the delivery temperature and possible unusual

noises.

S Check the refrigerant charge by means of the sight glass.

S Check that the safety devices operate correctly.

S Check the correct operation of the thermostatic valve (superheating between 5ûC --- 8ûC).

S Check that the oil level indicated by the compressor sight glass is higher than the min. value.

CHILLED WATER CIRCUIT

S Ensure that there are no water leaks.

S Bleed any air out of the hydraulic circuit using the bleed valves.

S Verify that the water flow rate is correct.

S Check the inlet --- outlet liquid temperature and pressure.

S Check the correct operation of the three--- way valve (Versions with free--- cooling only).

S Check if the system is charged with the specified glycol percentage and that no ice h as

formed in the hydraulic circuit.

S Check the evaporator cleanliness.

8 --- O p t i o n s a n d A c c e s s o r i e s

8 . 1 --- P u m p s e t

On mod. 004---016 the centr ifugal pump units are direct driven,

with close---coupledmotorsand a single shaft; the inductionmo-

tor has 2 poles with IP 54 protection and class F insulation.

The materials used for the pump main components are:

S Pump body in plastic material PA 6.6 (cast iron in all high

pressure freecooling versions and on model 016 in the Chil-

ler high head pressure version and Superchiller standard

head pressure version);

S Impeller in in plastic material PPO (stainless steel in all high

pressure freecooling versions and on model 016 in the Chil-

ler high head pressure version and Superchiller standard

head pressure version);

S Stainless steel shaft;

S Graphite impregnated ceramic mechanical seal (EPDM in

all high pressure freecooling versions and on model 016 in

the Chiller high head pressure version and Superchiller

standard head pressure version), suitable for the use of mix-

tures containing ethylene glycol.

The pump units have been chosen and sized to operate within

specific limits, namely:

S Water / ethylene glycol mixtures up to 65% / 35% by weight;

S Temperatures of the standard pumped fluid not lower than

4°C.

The hydrauliccircuitincludes, for each pump, a suctionshut---off

valve and a delivery check valve if two pumps are installed, or

suction and delivery shut---off valves if a single pump is installed.

On mod. 017---032 the centr ifugal pump units are direct driven,

with close---coupledmotorsand a single shaft; the inductionmo-

tor has 2 poles with IP 55 protection and class F insulation.

Pump casings and impellers are in cast iron EN --- GJL 200, shafts

are in stainle ss steel, the shaft seal is a unbalanced, mechanical

shaft seal with dimensions according to DIN 24 960 and assem-

bly length according to EN 12 756, brass neck ring permits ideal

conditions for the use of water mixtures containing ethylene gly-

col. The pump housing, the motor stool and the motor stator

housing are electroc oated.

The pump units have been chosen and sized to operate within

specific limits, namely:

S Water / ethylene glycol mixtures up to 65% / 35% by weight;

S Temperatures of the standard pumped fluid not lower than

4°C.

The motor stool forms connection between the pump housing

and the motor, and is equipped with a manual air vent screw for

venting of the pump housing and the shaft seal chamber. It is

very important to carry out this operation as the circulation of liq-

uid through theduct of the air vent sc rew ensur es lubrication and

cooling of the shaft seal.

Between the outlets of the two chambers and the discharge

flange, twin---head pumps have a non---return flap valve in

EPDM rubber. The flap is opened by the flow of the pumped liq-

uid and cuts off the port of the idle pump chamber.

In the electrical panel there are, for all the models of pumps, au-

tomatic circuit breakers for each pump; the microprocessor con-

trol manages the operating rotation between the two pumps and

start--- up of the stand--- by pump if the primary pump fails.

For the technical features of the pumps and the hydraulic sche-

matic see Tab. 8, Fig. 18, Fig. 19, Fig. 20, Fig. 21, Fig. 21 and

Fig. 22.

8.2 --- Water chiller with partial heat

recovery (20%)

This option enables the recovery of up to 20% of the heat normal-

ly rejected by the condensers. The system does not require any

adjustment and is made up of plate heat exchangers installed

on each circuit before the condenser. The exchangers are pro-

tect ed by a suitable anti---frost heater that operates when the sy-

stem is stopped. It is recommended that a safety valve be

installed inthe hydraulic circuit to avoid hazardsdue tooverpres-

sures, if there is no water flow through the recuperator.

The water temperature at the recuperator inlet (in stabl e operat-

ing conditions) must be in the range of 25ûC --- 4 5 ûC, with an out-

let differential of between 3.5ûC --- 8 ûC.

8.3 --- Water chiller with total heat recovery

(100%)

All heat discharged by the unit to the condenser is recovered.

The system includes an additional refrigerating circuit made up

of a three---way sole noid valve, supplying --- in case of hot water

demand --- a plate exchanger, usually by---passed and sized so

as to discharge all condensing heat (also installed before the

finned air condenser in series with it); a check valve, a liquid re-

ceiver at the exit of the finned air condenser wor king as storage

for the needed additional refrigerant charge (see refrigerating

scheme). The recuperator is insulated with closed cell polyure-

thane and is equipped with heaters activated when the recuper-

ator is deactivated to prevent frost in winter with the system

stopped or not perfectly drained.

The operation in total recovery mode is enabled by an external

contact. The Microface control will simultaneously suit the fan

speed changing the fan speed setpoint differently from the stan-

dard operation without recovery (practically slowing the fans

down till they switch off); anyway, the operation in recovery

mode is enabled also without load at the users. Indeed, if the us-

ers do not demand heat, the water flowing to the condenser

reaches a te mperature that does not enable the total condensa-

tion of the compressed gas, and the remaining portion of the

phase change can thus take place in finned coil without inter-

rupting the recovery process through the intervention of the ma-

chine safety devices.

If the plate exchanger is supplied with too cold water, or if the sy-

stem is not preset by the installation technician with a three or

two---way proportional adjustment valve for the exchanger by-

pass (indispensable for cold starts, see following “Recom-

mended hydraulic circuit” ), the condensing pressure tends to

decrease too much; a prolonged condition of low condensing

temperature below the safety threshold leads the Microface mi-

croprocessor control to disable the heat recovery, protecting the

system from any possible malfunctioning.

Fig. e -- Recommended hydraulic circuit

Heat recovery

users

Heat recovery

exchanger

8.4 --- Hydraulic circuit accessories

Made up of an expansion vessel (pre---charged at 1.5 bar, max.

operating pressure 10 bar) and a safety valve, set at 5 bar. Their

position in the hydraulic circuit is illustrated in Fig. 18, Fig. 19,

Fig. 20, Fig. 21, Fig. 21 and Fig. 22.

S Expansion vessel volume:

--- 8 litres for all 004 --- 016 units,

--- 12 litres for all 017 ---032 units.

It is recommended that the total required expansion vessel ca-

pacity is always checked, depending on the unit’s internal hy-

draulicvolume(withthevolumeofthebuffertank,ifinstalled),

the user circuit volume, the glycol percentage in the mixture, and

the expected maximum temperature variation of the mixture.

The water flow switch is a compulsory device protecting the unit.

It is installed, as standard, on units with the optional on--- board

pump set, and is available as a option for units without pumps

on board: in the latter case the flow switch, if not installed on the

machine, must be installed on the hydraulic circuit by the install-

er and wired to the electric panel terminal board, as indicated on

the wiring diagram.

8.5--- Waterchillerwithinertiatank

The machine can be supplied complete with a buffer tank; it per-

forms the inertial stabilizer function, for better compressor op-

eration, summed up in the following two points:

S it reduces the frequency of the compressor peaks, which is

higher the lower the system thermal inertia, improving their

performance;

S it naturally eliminates the operational problems caused by

sudden load variations (shown by variations of the chilled

water temperature).

The buffer tank is supplied insulated, with a drain valve, vent

valve and connection for immersion elect r i c heaters; maximum

operating pressure 6 bar.

Builtincarbonsteelandcoatedwithanti---condensationinsula-

tion. It can be installed in all MATRIX R 004 ---016 versions inside

the coil compartment, while on mod. 017--- 032 it is installed in-

side a cabinet which can be supplied either already connected

to the unit (mechanically and hydraulically jointed to it) or loose

(completely separate from the unit).

Mod. 004---006---007 technical dat a

S Internal volume: 200 litres

S Net weight: 110 kg

S W o rking weight: 310 kg

Mod. 008---011---014---016 technical data

S Internal volume: 400 litres

S Net weight: 140 kg

S W o rking weight: 540 kg

Mod. 204---206---207 technical dat a

S Internal volume: 160 litres

S Net weight: 100 kg

S W o rking weight: 260 kg

Mod. 017---032 technical d ata

S Internal volume: 1000 litres

S Net weight: 400 kg

S W o rking weight: 1400 kg

Tab. 1 --- Internal hydraulic volume

Model Unit volume

(*)

[l] Model Unit volume

(*)

[l]

004 8 004 37

006 9 006 38

007 14 007 75

204 10 204 39

206 10

206 40

CRH

207 18

SRH

207 79

008 24 008 97

011 27 011 101

014 38 014 146

016 46 016 156

017 37 017 129

020 37 020 129

023 45 023 158

CRH 025 45 SRH 025 158

028 51 028 186

030 60 030 195

032 60 032 195

(*) Add the tank’s volume for the units with optional buffer tank

Tab. 2 --- R 407C refrigerant and oil charge

CRH 004--016

Models 004 006 007 204 206 207 008 011 014 016

Refrigerant charge (each circuit) [ kg] 12.6 7.5 13.9 7.7 23.7 12.9 12.9 14.5 19.9 20.8

Oil charge (each circuit) [lt] 6.2 8.0 8.0 3.25 3.25 3.3 6.2 8.0 8.0 8.0

CRH 017--032

Models 017 020 023 025 028 030 032

Refrigerant charge (each circuit) [ kg] 21.0 21.6 30.7 30.8 36.8 39.4 39.5

Oil charge (each circuit) [lt] 12.4 14.2 16.0 16.0 16.0 16.0 16.0

SRH 004--016

Models 004 006 007 204 206 207 008 011 014 016

Refrigerant charge (each circuit) [ kg] 12.6 7.5 13.9 7.7 23.7 12.9 12.9 14.5 19.9 20.8

Oil charge (each circuit) [lt] 6.2 8.0 8.0 3.25 3.25 3.3 6.2 8.0 8.0 8.0

SRH 017--032

Models: 017 020 023 025 028 030 032

Refrigerant charge (each circuit) [ kg] 21.0 21.6 30.7 30.8 36.8 39.4 39.5

Oil charge (each circuit) [lt] 12.4 14.2 16.0 16.0 16.0 16.0 16.0

Ta b . 3 --- C R H / S R H 0 0 4 --- 0 3 2 --- P a r t i a l h e a t r e c o v e r y ( 2 0 % )

CRH/SRH 004--016

Model

004

204

006

206

007

207

008 011 014 016

Heating capacity

10,8 14,8 18,2 21,6 29,6 36,4 44,3

Water flow

l/s

0,516 0,707 0,870 1,032 1,414 1,739 2,117

Water pressure drop

kPa

8 11 14 8 11 14 21

Water connections

B S P --- T

1” 1” 1” 1

” 1

”

Working conditions: outdoor temperature 35ûC, water inlet/outlet 12/7ûC (Chiller versions), glycol mixture 30% inlet/outlet 15/10ûC (SuperChiller versions).

Heat recovery conditions: water inlet/outlet 40/45ûC.

CRH/SRH 017--032

Model 017 020 023 025 028 030 032

Heating capacity

40 48 56 62 68 79 86

Water flow

l/s

1.91 2.29 2.68 2.96 3.25 3.77 4.11

Water pressure drop

kPa

15 20 16 19 16 17 20

Water connections

B S P --- T

2”

Working conditions: outdoor temperature 35ûC, water inlet/outlet 12/7ûC (Chiller versions), glycol mixture 30% inlet/outlet 15/10ûC (SuperChiller versions).

Heat recovery conditions: water inlet/outlet 40/45ûC.

Tab. 4 --- CRH/SRH 004---032 --- Total heat recovery (100%)

CRH/SRH 004--016

Model

004

204

006

206

007

207

008 011 014 016

Heating capacity

53 74 91 105 144 177 223

Water flow

l/s

2,53 3,54 4,35 5,02 6,88 8,46 10,65

Water pressure drop

kPa

60 70 80 60 70 80 90

Water connections

B S P --- T

2” 2” 2” 2

” 2

”

Working conditions: water inlet/outlet 12/7 ûC (Chiller versions). Heat recovery conditions: water inlet/outlet 40/45ûC.

CRH/SRH 017--032

Model 017 020 023 025 028 030 032

Heating capacity

212 238 290 320 357 412 453

Water flow

l/s

10.13 11.37 13.86 15.29 17.06 19.68 21.64

Water pressure drop

kPa

52 65 71 82 83 85 99

Water connections

B S P --- T

DN 80 --- 3”

Working conditions: water inlet/outlet 12/7 ûC (Chiller versions). Heat recovery conditions: water inlet/outlet 40/45ûC.

Tab. 5 --- Electrical characteristics

CRH 004--016 -- R 407C

Size 004 204 006 206 007 207 008 011 014 016

Power supply --- 400 V / 3 Ph / 50 Hz

(1)

FLA

LRA

Compressors power input

(1)

Compressors nominal current

(1)

Compressor max. current

Fans power input

183

13.2

2.9

125

13.2

2.9

223

19.3

3.3

167

19.0

3.3

278

24.1

3.1

185

24.6

3.1

226

26.3

5.8

116

281

38.6

6.8

163

364

43.6

10.1

123

169

417

59.4

10.2

Fans max. power input

Fans max. current

4.9

8.2

SHC std. head pressure pump model (Opt.)

Std. head pressure pump motor nom. power

Std. head pressure pump motor max. power

Std. head pressure pump max. current

SHC high head pressure pump model (Opt.)

FHE high head pressure pump model (Opt.)

High head pressure pump motor nom. power

High head pressure pump motor max. power

High head pressure pump max. current

---

12 --- 129

0.75

1.08

1.85

12 --- 136

---

1.1

1.44

2.67

12 --- 136

1.1

1.44

2.67

20--- 128

---

1.5

1.92

3.90

20 --- 128

1.5

1.92

3.90

20 --- 134

---

1.85

2.45

4.61

20--- 134

1.85

2.45

4.61

---

40--- 160/40

4.0

8.50

Electri cal cable section (min.) mm

16 16 25 25 35 35 35 50 70 95

(1) Outdoor air temperature 35ûC; water inlet/outlet temperature 12/7ûC.

Nominal air flow and 50 Pa available air static pressure.

CRH 017--032 -- R 407C

Size 017 020 023 025 028 030 032

Power supply --- 400 V / 3 Ph / 50 Hz

(1)

FLA

LRA

Compressors power input

(1)

Compressors nominal current

(1)

Compressor max. current

Fans power input

125

165

305

57.3

100

9.7

135

195

360

64.9

110

9.7

163

233

398

77.7

130

13.1

183

271

472

90.1

150

13.1

199

317

518

94.5

158

16.5

225

323

571

111.7

184

16.5

245

329

577

124.8

204

18.1

Fans max. power input

Fans max. current

4.9

8.2

SHC std. head pressure pump model (Opt.)

Std. head pressure pump motor power

Std. head pressure pump max. current

High head pressure pump model (Opt.)

High head pressure pump motor power

High head pressure pump max. current

---

65 --- 190/2

2.2

4.45

65 --- 260/2

4.0

8.00

65 --- 230/2

3.0

5.95

65 --- 260/2

4.0

8.00

65 --- 260/2

4.0

8.00

65 --- 340/2

5.5

11.20

Electri cal cable section (min.) mm

70 95 120 150 185 185 185

(1) Outdoor air temperature 35ûC; water inlet/outlet temperature 12/7ûC.

Nominal air flow and 50 Pa available air static pressure.

SRH 004--016 -- R 407C

Size 004 204 006 206 007 207 008 011 014 016

Power supply --- 400 V / 3 Ph / 50 Hz

(1)

FLA

LRA

Compressors power input

(1)

Compressors nominal current

(1)

Compressor max. current

Fans power input

183

13.4

3.2

125

13.4

3.2

223

19.8

3.8

167

19.4

3.8

278

24.8

3.3

185

25.0

3.3

226

26.7

6.5

116

281

39.6

7.6

101

163

364

44.5

11.4

125

169

417

60.8

100

11.4

Fans max. power input

Fans max. current

4.9

8.2

SHC std. head pressure pump model (Opt.)

FHE std. head pressure pump model (Opt.)

Std. head pressure pump motor nom. power

Std. head pressure pump motor max. power

Std. head pressure pump max. current

SHC high head pressure pump model (Opt.)

High head pressure pump motor nom. power

High head pressure pump motor max. power

High head pressure pump max. current

---

12 --- 136

---

1.1

1.44

2.67

32--- 160/30

3.0

6.50

20 --- 128

---

1.5

1.92

3.90

32 --- 160/30

3.0

6.50

20 --- 134

---

1.85

2.45

4.61

40--- 160/40

4.0

8.50

---

40--- 160/40

4.0

8.50

40--- 200/75

7.5

15.50

Electri cal cable section (min.) mm

16 16 25 25 35 35 35 50 70 95

(1) Outdoor air temperature 35ûC ; 30% glycol water mixture; water inlet/outlet temperature 15/10ûC.

Nominal air flow and 50 Pa available air static pressure.

SRH 017--032 -- R 407C

Size 017 020 023 025 028 030 032

Power supply --- 400 V / 3 Ph / 50 Hz

(1)

FLA

LRA

Compressors power input

(1)

Compressors nominal current

(1)

Compressor max. current

Fans power input

127

165

305

58.5

102

10.8

137

195

360

66.5

112

10.8

165

233

398

79.7

132

14.6

185

271

472

92.5

152

14.6

203

317

518

96.9

162

18.3

229

323

571

114.8

188

18.3

249

329

577

128.1

208

20.3

Fans max. power input

Fans max. current

4.9

8.2

Std. head pressure pump model (Opt.)

Std. head pressure pump motor power

Std. head pressure pump max. current

High head pressure pump model (Opt.)

High head pressure pump motor power

High head pressure pump max. current

---

65 --- 260/2

4.0

8.00

65 --- 340/2

5.5

11.20

65 --- 340/2

5.5

11.20

65 --- 410/2

7.5

15.20

65 --- 410/2

7.5

15.20

65 --- 460/2

11.0

21.40

Electri cal cable section (min.) mm

70 95 120 150 185 185 185

(1) Outdoor air temperature 35ûC ; 30% glycol water mixture; water inlet/outlet temperature 15/10ûC.

Nominal air flow and 50 Pa available air static pressure.

•

Nominal power supply = 400 V; 3 Ph; 50 Hz

•

Nominal power supply tolerance = 400 V ±10 %

•

Max. voltage unbalance = 3 %

•

The cables have to be sized in compliance with local standards and according to the type and characteristics of installation. Suggested cables sectionare

referred to PVC insulation with a max. working temperature of 70 ûC and an ambient temperature of 30 ûC.

Tab. 6 --- Operating limits

CRH 004--016 -- R 407C

Size 004 006 007 204 206 207 008 011 014 016

Working Range

Max. outdoor air temperature

(1)

ûC 45 45 42 42 42 42 45 43 45 42

Safety Device Settings

High pressure switch

High pressure safety valve

Low pressure switch

Barg

26.0

28.0 / 29.0

2.8

(1)

With nominal air flow; water flow outlet at 7ûC ; full load

CRH 017--032 -- R 407C

Size 017 020 023 025 028 030 032

Working Range

Max. outdoor air temperature

(1)

ûC 42.5 40.5 42.5 40.5 43.0 40.0 39.5

Safety Device Settings

High pressure switch

High pressure safety valve

Low pressure switch

Barg

26.0

29.0

2.8

(1)

With nominal air flow; water flow outlet at 7ûC ; full load

SRH 004--016 -- R 407C

Size 004 006 007 204 206 207 008 011 014 016

Working Range

Max. outdoor air temperature

(2)

ûC 45.0 45.0 41.5 41.5 41.0 41.0 45.0 42.0 45.0 41.0

Safety Device Settings

High pressure switch

High pressure safety valve

Low pressure switch

Barg

26.0

28.0 / 29.0

2.8

(2)

With nominal air flow; 30% mixture flow outlet at 10ûC; full load

SRH 017--032 -- R 407C

Size 017 020 023 025 028 030 032

Working Range

Max. outdoor air temperature

(2)

ûC 41.5 39.5 41.5 39.5 42.0 39.0 38.5

Safety Device Settings

High pressure switch

High pressure safety valve

Low pressure switch

Barg

26.0

29.0

2.8

(2)

With nominal air flow; 30% mixture flow outlet at 10ûC; full load

Ta b . 7 --- N o i s e l e v e l s

The following tabl e indicates the overall sound pressure level at full load conditions, measured 1m from the unit, coil side, with ducted

air discharge (50 Pa static pressure), with an outdoor temperature of 35 ûC and referred to free field conditions.

Models

Tota l

sound level

Models

Tota l

sound level

[dB(A)]

CRH / SRH 004 --- 204 70 CRH / SRH 017 74.5

CRH / SRH 006 --- 206 73 CRH / SRH 020 74.5

CRH / SRH 007 --- 207 74 CRH / SRH 023 75

CRH / SRH 008 71.5 CRH / SRH 025 75

CRH / SRH 011 74.5 CRH / SRH 028 76

CRH / SRH 014 75.5 CRH / SRH 030 76

CRH / SRH 016 75.5 CRH / SRH 032 78

Tab. 8 --- Pump set characteristics (opt.)

2 pole pump set, standard head pressure (data refers to each pump)

Models 004 204 006 206 007 207 008 011 014 016

Water flow

6.79 6.79 8.86 8.73 10.94 11.11 13.41 17.53 22.78 28.00

CRH

Available head pressure

kPa

127 156 122 146 104 127 141 142 88 78

Pump quantity

Nr.

1 2

Pump rotor model

---

12--- 129 12--- 136 20--- 128 20--- 134

Nominal motor power

0.75 1.1 1.5 1.85

Noise level

(*)

dB(A)

58 63 65

Pump weight

10.4 12.7 13.8 15.4

(*) According to ISO 3744

2 pole pump set, high head pressure (data refers to each pump)

Models 004 204 006 206 007 207 008 011 014 016

Water flow

6.79 6.79 8.86 8.73 10.94 11.11 13.41 17.53 22.78 28.00

CRH

Available head pressure

kPa

169 198 163 187 145 168 167 191 145 173

Pump quantity

Nr.

1 2

Pump rotor model

---

12--- 136 20--- 128 20--- 134 40--- 160/40

Nominal motor power

1.1 1.5 1.85 4

Noise level

(*)

dB(A)

58 63 65 70

Pump weight

12.7 13.8 15.4 42

(*) According to ISO 3744

2 pole pump set, standard head pressure (data refers to each pump)

Models 017 020 023 025 028 030 032

Water flow

26.93 29.26 35.67 38.38 44.20 50.71 55.23

CRH

Available head pressure

kPa

119 107 136 123 145 111 73

Pump quantity

Nr.

1/2

Pump rotor model

---

65--- 190 / 2 65--- 230 / 2 65---260 / 2

Nominal motor power

2.2 3 4

Noise level

(*)

dB(A)

60 59 63

Pump weight

57.9 / 116.4 69.3 / 139.2 74.3 / 149.2

(*) According to ISO 3744

2 pole pump set, high head pressure (data refers to each pump)

Models 017 020 023 025 028 030 032

Water flow

26.93 29.26 35.67 38.38 44.20 50.71 55.23

CRH

Available head pressure

kPa

197 187 182 170 230 204 173

Pump quantity

Nr.

1/2

Pump rotor model

---

65--- 260 / 2 65--- 340 / 2

Nominal motor power

4 6

Noise level

(*)

dB(A)

Pump weight

74.3 / 149.2 89.2 / 178.9

(*) According to ISO 3744

2 pole pump set, standard head pressure (data refers to each pump)

Models 004 204 006 206 007 207 008 011 014 016

30% glycol/water mixture flow

7.83 7.83 10.26 10.08 12.58 12.64 15.45 20.12 26.24 31.92

SRH

Available head pressure

kPa

98 142 62 100 93 128 96 91 50 79

Pump quantity

Nr.

1 2

Pump rotor model

---

12--- 136 20--- 128 20--- 134 40---160/40

Nominal motor power

1.1 1.5 1.85 4

Noise level

(*)

dB(A)

58 63 65 70

Pump weight

12.7 13.8 15.4 42

(*) According to ISO 3744

2 pole pump set, high head pressure (data refers to each pump)

Models 004 204 006 206 007 207 008 011 014 016

30% glycol/water mixture flow

7.83 7.83 10.26 10.08 12.58 12.64 15.45 20.12 26.24 31.92

SRH

Available head pressure

kPa

233 277 183 221 199 234 197 170 138 223

Pump quantity

Nr.

1 2

Pump rotor model

---

32--- 160/30 40--- 160/40 40--- 200/75

Nominal motor power

3 4 7.5

Noise level

(*)

dB(A)

66 70 74

Pump weight

35 42 64

(*) According to ISO 3744

2 pole pump set, standard head pressure (data refers to each pump)

Models 017 020 023 025 028 030 032

30% glycol/water mixture flow

31.06 33.49 41.26 43.98 51.08 58.3 63.27

SRH

Available head pressure

kPa

77 51 118 92 103 146 94

Pump quantity

Nr.

1/2

Pump rotor model

---

65--- 260 / 2 65--- 340 / 2 65--- 410 / 2

Nominal motor power

4 5.5 7.5

Noise level

(*)

dB(A)

63 63 68

Pump weight

74.3 / 149.2 89.2 / 178.9 91.1 / 182.7

(*) According to ISO 3744

2 pole pump set, high head pressure (data refers to each pump)

Models 017 020 023 025 028 030 032

30% glycol/water mixture flow

31.06 33.49 41.26 43.98 51.08 58.3 63.27

SRH

Available head pressure

kPa

157 133 207 183 190 205 159

Pump quantity

Nr.

1/2

Pump rotor model

---

65--- 340 / 2 65--- 410 / 2 65--- 460 / 2

Nominal motor power

5.5 7.5 11

Noise level

(*)

dB(A)

63 68 65

Pump weight

89.2 / 178.9 91.1 / 182.7 149.4 / 306.4

(*) According to ISO 3744

Tab. 9 --- Fan performances and settings

Standard air flow [12000 m

/h], 3 Ph fan + TRIAC

Models: CRH 004 --- 204 --- 008

Useful static pressure

Max. fan speed signal

Fan speed

Absorbed unitary power

Fan d ischarge sound power [PWL]

Rpm

dB(A)

5.0

1034

2860

100

5.2

1066

3090

150

5.4

1097

3320

200

5.6

1128

3530

250

5.8

1158

3720

300

6.0

1189

3910

350

6.3

1220

4090

400

6.7

1252

4250

450

7.2

1283

4420

500

7.9

1313

4600

550

9.5

1343

4760

570

10.0

1352

4810

Models: SRH 004 --- 204 --- 008

Useful static pressure

Max. fan speed signal

Fan speed

Absorbed unitary power

Fan d ischarge sound power [PWL]

Rpm

dB(A)

5.3

1081

3210

100

5.5

1113

3430

150

5.7

1143

3620

200

5.9

1173

3810

250

6.1

1204

4010

300

6.5

1236

4170

350

6.9

1268

4330

400

7.6

1298

4510

450

8.6

1328

4680

490

10.0

1351

4810

Standard air flow [12000 m

/h], EC fan

Models: CRH 004 --- 204 --- 008

Useful static pressure

Max. fan speed signal

Fan speed

Absorbed unitary power

Fan d ischarge sound power [PWL]

Rpm

dB(A)

8.2

1041

1560

100

8.5

1080

1790

150

8.8

1117

2030

200

9.1

1153

2270

250

9.4

1190

2520

300

9.6

1225

2780

350

9.9

1259

3040

370

10.0

1270

3120

Models: SRH 004 --- 204 --- 008

Useful static pressure

Max. fan speed signal

Fan speed

Absorbed unitary power

Fan d ischarge sound power [PWL]

Rpm

dB(A)

8.6

1099

1910

100

8.9

1135

2140

150

9.2

1172

2390

200

9.5

1208

2650

250

9.8

1242

2910

290

10.0

1270

3120

Standard air flow [14000 m

/h], 3 Ph fan + TRIAC

Models: CRH 006 --- 206 --- 011 --- 014 --- 016

Useful static pressure

Max. fan speed signal

Fan speed

Absorbed unitary power

Fan d ischarge sound power [PWL]

Rpm

dB(A)

5.6

1162

3320

100

5.8

1189

3550

150

6.1

1216

3770

200

6.4

1245

3980

250

6.9

1274

4170

300

7.5

1302

4360

350

8.4

1329

4560

395

10.0

1354

4740

Models: SRH 006 --- 206 --- 011 --- 014 --- 016

Useful static pressure

Max. fan speed signal

Fan speed

Absorbed unitary power

Fan d ischarge sound power [PWL]

Rpm

dB(A)

6.1

1215

3760

100

6.4

1243

3970

150

6.9

1273

4160

200

7.5

1301

4360

250

8.3

1328

4550

298

10.0

1355

4740

Standard air flow [14000 m

/h], EC fan

Models: CRH 006 --- 206 --- 011 --- 014 --- 016

Useful static pressure

Max. fan speed signal

Fan speed

Absorbed unitary power

Fan d ischarge sound power [PWL]

Rpm

dB(A)

9.1

1165

2100

100

9.4

1200

2360

150

9.7

1233

2620

210

10.0

1271

2940

Models: SRH 006 --- 206 --- 011 --- 014 --- 016

Useful static pressure

Max. fan speed signal

Fan speed

Absorbed unitary power

Fan d ischarge sound power [PWL]

Rpm

dB(A)

9.7

1232

2610

100

9.9

1264

2880

112

10.0

1271

2940

Unit performances are referred to sea level conditions.

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Liebert SRH028 User manual

Liebert SRH028 User manual

Liebert SRH028 User manual

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