Remko RVS75H User manual

Brand: Remko

Model: RVS75H

Category: Heat pumps

Type: User manual

This manual is also suitable for

Edition GB – W11

REMKO RVS...H (INOX)

RVS 60H, RVS 75H, RVS 100H, RVS 150H

RVS 60H INOX, RVS 75H INOX, RVS 100H INOX,

RVS 150H INOX

Air-cooled Chiller with Heat Pump function

Air-cooled Chiller with Heat Pump function in Stainless Steel

Operation · Technology · Spare parts

Contents

Read these operating instructions carefully

before commissioning / or using the system.

These instructions are an integral part of the system and must be

kept at all times near by or on the system.

This operating manual is a translation of the German original.

Subject to modiﬁcations; no liability accepted for errors or misprints!

Safety notes 4

Environmental protection and recycling 4

Warranty 5

Transport and packagin 5

System description 5-6

System conﬁguration 7

Operation 7-13

Care and maintenance 14

Shut-down 14

Trouble-shooting and customer service 15-17

Installation instructions for qualiﬁed personnel 18-20

Installation 21-25

Condensate draining and ensured discharge 25-26

Electrical connection 26-28

Electrical components 29

Electrical drawings 30-31

Leak testing 32

Before commissioning 32-33

Commissioning 34

Unit dimensions 35

Exploded view 36/38

Spare parts list 37/39

Performance graphs 40-41

Technical data 42

EC – Declaration of Conformity 43

Made by REMKO

Safety notes

Environmental

protection

and recycling

Disposal of packaging

All products are packed for trans-

port in environmentally friendly

materials. Make a valuable con-

tribution to reducing waste and

preserving raw materials. Only

dispose of packaging at approved

collection points.

Disposal of equipment

and components

Only recyclable materials are used

in the manufacture of the system

and components.

Help protect the environment by

ensuring that the system or com-

ponents (for example batteries) are

not disposed in household waste,

but only in accordance with local

regulations and in an environmen-

tally safe manner, e.g. using certi-

ﬁed ﬁrms and recycling specialists

or at collection points.

Carefully read the operating in-

structions before commissioning the

system. It provides useful tips and

information as well as hazard

warnings to prevent injury or mate-

rial damage .

Failure to follow the directions in

this manual can result in injury,

damage to the environment and

the system itself and will null in

void any claims for liability.

■

Keep this manual and the refrig-

erant data sheet by the system.

■ The system or components

are not to be exposed to any

mechanical stresses, extreme

levels of humidity or extreme

sunlight.

■ The unit should be set up and

installed only by qualified per-

sonnel.

■ The installation, connection and

operation of the system and its

components must be carried out

in accordance with the operat-

ing instructions as stipulated in

this manual and comply with all

applicable local regulations.

■ Mobile systems must be set up

securely on suitable surfaces and

in an upright position. Stationary

systems must be permanently

installed for operation.

■ Modification of the system or

its components supplied by

REMKO is not permitted and

can cause malfunctions.

■ The system and components

may not be operated in areas

where there is an increased risk

of damage. Observe the mini-

mum clearances.

■ The electrical supply should be

adapted to fulfil the require-

ments of the system.

■ The operational safety of system

and components is only assured

if they are fully assembled and

used as intended. Safety devices

may not be modified or discon-

nected.

■ Do not operate the system or

components with obvious de-

fects or signs of damage.

■ All housing parts and openings

in the system, e.g. air inlets and

outlets, must be free of foreign

objects, fluids, or gases.

■ The system and components

must not be installed in hazard-

ous areas or areas where the air

is contaminated with abrasive/

corrosive materials or dust.

■ Touching some parts of the sys-

tem can result in burns or other

injury. Wearing appropriate

protective clothing is necessary

to avoid risks.

■ Only authorised personnel and

personnel trained in the use of

the system and its components

are permitted access to and

allowed to operate the system

and its components.

■ Installation, repair and mainte-

nance work should only be car-

ried out by authorised person-

nel. Inspection and cleaning can

be performed by the operator

providing the system is not un-

der current/voltage.

■ To avoid any risks to persons,

appropriate precautions are to

be taken when installing, repair-

ing, maintaining, cleaning or

working on the system.

■ The system or components

are not to be exposed to any

mechanical stresses, extreme

levels of humidity or direct

sunlight.

REMKO RVS...H (INOX)

The system is designed for out-

door installation. Under certain

circumstances, it can also be used

indoors. The system’s cooling

cycle comprises of: an evaporator,

a compressor with a crankcase

heater, a thermal expansion valve,

condenser, condenser fan, fan

speed system and high and low

pressure switches. Systems with

heat pump function also have a

reversing valve and a refrigerant

tank.

The medium cycle comprises a

circulation pump, expansion vessel,

safety valve, medium storage tank

and a ﬂow switch. Accessories in-

clude: Cabled remote control, vib-

ration dampers, glycol concentrate

and a technical acceptance test.

Intended use

Depending on the model and the

equipment, the system is only

intended to be used as a chilled

water system for the cooling or

warming of the operating medium

water or a water-glycol mixture

within a closed cycle.

Any other use or use in a way that

dose not conform with the deﬁni-

tion above is considered an incor-

rect use.

The manufacturer/supplier as-

sumes no liability for damages aris-

ing from the incorrect use of the

system or any part of it. The user

dose so at their own risk. Using the

system correctly means working

in accordance with the operating

manual, installation instructions

and complying with the mainte-

nance requirements.

The system is shipped in sturdy

transport packaging. Immediately

check the system on delivery and

make note of any damage or miss-

ing parts on the delivery note and

inform the forwarding agent and

your contractual partner.

Warranty claims at a later date will

not be accepted.

System description

Transport and

packaging

In cooling mode, the unit (an air to

water chiller) takes heat out of the

operating medium to be cooled,

water or a mixture of water and

glycol, within a closed medium

cycle in the evaporator (plate heat

exchanger) and gives it off to the

closed cooling cycle. Through the

heat exchange, the medium cools

and the refrigerant in the cooling

cycle vaporises under low pressure.

The vaporised refrigerant passes

into an electrically driven compres-

sor (rotary piston or scroll design),

which increases the refrigerants

pressure and temperature. The

vaporise refrigerant passes into a

ﬁnned condenser, which, as a con-

sequence of the heat exchange,

condenses the refrigerant under

high pressure to a liquid. The air

that passes through the condenser

heats the surrounding area. The

liquid refrigerant is returned by

means of a thermal expansion

valve back to the evaporator

where the process starts again.

In heating mode, a chilled water

system with heat pump functions

(HP-function) can take up heat

from the ambient air in the ﬁnned

condenser and give it off to the

operating medium. A reversing

valve switches the cooling cycle.

A independent return temperature

regulator, which ensures the safety

functions of the system controls

the cooling and heating. A re-

mote Enabling switch provides for

remote on/off.

Warranty

It is important for any warranty

claims is that the customer or

his accepting representative fully

complete the warranty registra-

tion card and commissioning report

which is included with the system

at the time when it is purchased

and commissioned and that these

documents are returned to REMKO

GmbH & Co. KG. The warranty

conditions are detailed in the "Gen-

eral terms and conditions". Only

the parties to a contract can negoti-

ate any special agreements beyond

these conditions. In this case, con-

tact the contractual partner.

Legend:

1 Circulation pump

2 Manual bleeding valve

3 Plate evaporator

4 Flow switch

5 Expansion vessel

6 Safety valve

7 Compressor

8 Pressure switch

9 Schrader valve

10 Fin condenser

11 Condenser fan

12 Filter dryer

13 Capillary tube

14 Thermal expansion valve cooling

15 Probe medium intake

16 Probe medium outlet

17 Probe condenser

18 Pressure transducer

Construction

RVS 60H cooling and heating mode

RVS 75H cooling and heating mode

RVS 100H / RVS 150H cooling and heating mode

REMKO RVS...H (INOX)

System configuration

Operation

The system can be easily operated

via the fully automatic controller

μC2SE. If due to local conditions

programming via the internal con-

trol course difficulties, the system

can also be programmed via a ca-

bled remote controller (accessory)

or an external ON/OFF-Switch.

If a combination of letters /

numbers is shown in the dis-

play, then there is a malfunc-

tion in the unit (see chapter on

trouble-shooting and customer

service).

! CAUTION

The system is designed as a two

pipe system.

The system has 2 medium pipes

(supply and return) for cooling

using a cold medium or heating

using a warm medium.

The medium can be circulated

to the room to be cooled via the

ﬂoor, or via the ceiling depending

on where the unit is mounted.

For each of the different systems, a

minimum ﬂow volume and a mini-

mum medium volume is needed

for safe operation.

Chilled water system

System conﬁguration

Medium intake

Medium outlet

Indoor area 1

Outdoor area

Indoor area 2 Indoor area 3

Room temperature control Room temperature control

Infrared remote control

Chilled water

appliance

Chilled water

appliance

Chilled water

appliance

Condensate drain

Condensate line (only

units with HP-function)

Condensate drain Condensate drain

Condensate collecting drain

A centralised fault contact, part of

the standard equipment, can be

used for the external signalling of

a fault.

Methods of operation

Centralised

fault signal

Cable

remote control

Enable contact

On/OFF Cooling/Heating

(e.g. building management

system)

(Standard equipment)

(Accessories)

Controller

μC2SE

(Standard equipment)

Help save on energy consump-

tion in stand-by mode! If the

device, system or component

is not in use, we recommend

disconnecting the power sup-

ply. Components with a safety

function is excluded from our

recommendation!

TIP

Icon General alarm

The icon, displays the respective

code, and fault.

Icon Defrosting status

The icon(lights up) displays

that the defrosting cycle in the

ﬁn condenser is active. When

blinking the controller is calcu-

lating the necessary defrosting

time.

Icon Frost protection heating

The LED provides information

about the operating status for

the frost protection heating

medium.

Icon "Fault"

The LED shows that there is a

fault.

Icon Compressor 1

The illuminated LED indicates

that compressor 1 is in ope-

ration. The LED blinks if the

compressor is in safety mode.

Icon Compressor 2

See description point .

Icon Compressor 3

See description point .

Icon Compressor 4

See description point .

Value display

The value display shows current

values.

Operating the controller µC2SE

The controller has 3 modes:

1. Summer mode (cooling mode)

In cooling mode, the warmer me-

dium temperature is cooled to the

preset cooler temperature.

2. Transition mode (heating mode)

In heating mode, the cooler me-

dium temperature is heated to the

preset warmer value.

3. Standby mode (Stand-by)

In the Stand-By mode, safety

equipment is active but no operat-

ing mode is set.

Key-Pad " "

Using this key-pad, the current-

menu can be exited.

Key-Pad " "

This key-pad is used for se-

lecting open/close, a selected

value or parameter.

Key-Pad " "

Prolonged pressing (5 sec.)

allows switching between the-

operating modes „Cooling“and

„Stand-By“.Short pressing,

displaysof the current values

for the temperature probes B1

to B3 and the pressure trance-

ducer B4. A value can also be

increased.

Key-Pad " "

Prolonged pressing (5 sec.)

allows switching between the-

operating modes „Heating“and

„Stand-By“. Short pressing

displaysthe current values for

the temperature probes B1 to

B3 and the pressure trance-

ducer B4. A value can also be

reduced.

Key-Pad " and " together

Pressing long (5 sec.)and

together and on entering a

password, the parameter level is

opened.

Key-Pad " and " together

Pressing long (5 sec.) and

together allows the acknow-

ledgement of a pending faults

or operating hours.

Key-Pad " and " together

in heating mode

Longer pressing together

triggers manual defrosting in

heating mode.

Icon cooling mode

The icon displays the selected

cooling mode.

Icon heating mode

The icon displays the selected

heating mode.

Icon "Fan"

The icon lights up, if the con-

denser fan is activated.

Icon "Pump"

The icon lights up, if the circula-

ting pump is activated.

Controller control panel

µC2SE

During the initialization of the

controller (after starting the

unit and displaying the soft-

ware version, e.g. “H 99”) do

not push the key-pad “Prg”

to avoid reprogramming the

controller!

! CAUTION

REMKO RVS...H (INOX)

External operation

Key-Pad functions

External operating contact C / H

Standard means of switching on or off of the system is done manually

using the controller or using the cabled remote control available as an

accessory. Parameters must be changed if the system is to be activated

externally by means of an electrical switch.

Parameter H 07 activates the external Controller.

With regard to the subject of switching, please read the respective chap-

ter under “electrical connection”.

Operating using the controller is no longer possible once the parameter-

shave been changed.

Standard means of switching between the heating and cooling modes

is done manually using the controller or using the cabled remote control

available as an accessory. A parameter must be changed if the operating

mode is switched externally by an electrical switch.

Parameter H 06 activates the external switching.

With regard to the subject of switching, please read the respective chap-

ter under “electrical connection”.

Operating using the controller is no longer possible once the parameters

have been changed.

External enabling contact

Activate or deactivate the unit with the or key-pad by pressing

for more than 5 seconds. The set operating mode appears in the display

(cooling or heating icon).

The unit has three modes: Stand-By mode, Summer mode (cooling mode)

and Transition mode (heating mode only for systems with HP function). In

Stand-By mode no symbol is shown only the current value is displayed. All

fault reports and frost protection resistors are active.

Note: Other functions can be programmed for the icon by changing the

parameters.

Setting the operating mode

Cooling mode

Heating mode

Operating mode Stand-By

HEATING

MODE

COOLING

MODE

5 sec.

min. 5 sec.

Operating the unit is carried out using the controller’s key-pads. Checking current value or putting in the target

value for the summer mode (cooling mode) and the transition mode (heating mode) only for systems with (HP-

function) is done without the use of a password.

Qualiﬁed personnel who are authorised to use a passwords, can access submenus to change the systems con-

ﬁguration. All changes to the parameters must be documented and kept permanently by the system.

The following diagrams provide simpliﬁed illustrations of the operating functions.

Target value cooling mode

Programming target values

The target value cooling (r 01) and the actual (hysteresis) cooling (r 02)

can be displayed and changed under the menu item “-r-” without the

use of a password.

With the Key-Pad ▲ or ▼ the value can be changed within limits.

r 01 = 12.0 °C Target value cooling mode (factory setting)

r 02 = 2.0 °C Hysteresis cooling mode (factory setting)

Minimum target value cooling mode 10.0 °C

Maximum target value cooling mode 28.0 °C

Target value heating mode The target value heating (r 03) and the hysteresis heating (r 04) can be

displayed and changed under the menu item “-r-” without the use of

a password.

With the Key-Pad ▲ or ▼ the value can be changed within the limits set

in the factor (r15 + r16).

r 03 = 40.0 °C Target value heating mode (factory setting)

r 04 = 2.0 °C Hysteresis heating mode (factory setting)

Minimum target value heating mode 30.0 °C

Maximum target value heating mode 45.0 °C

Password

Display

Submenu

short-term short-term

min. 5 sec.

...

repeated short-term

short-term

short-term short-term

Target value cooling

old target value

new target value

short-term short-term

min. 5 sec.

...

repeated short-term

short-term

short-term short-term

REMKO RVS...H (INOX)

Display of Operating Time Go to menu for operating hours. A clock display will appear.

c10 = Operating time compressor 1 in hours x 100

c11 = Operating time compressor 2 in hours x 100

c15 = Operating time circulation pump in hours x 100

Circulation pump 1

Operating Status

Working time can be reset at the menu level by pressing the Key-Pad

and for 5 seconds.

Compressor 1920 operating hours0 operating hours

if necessary

for mainte-

nance

if necessary

for mainte-

nance 1670 operating hours0 operating hours

short-term short-term

min. 5 sec.

...

repeated

short-term

Display of the operating values The normal display shows the medium intake temperature.

Additional values can be called up by brieﬂy pressing the key-pad or

automatic

short-term

repeated

Current value probe b01

medium intake

Current value probe b02

medium outlet

Current value probe b03

condenser temperature cooling cycle

Current value tranceducer b04

high pressure side cooling cycle

short-term

Fault reset

To protect the system from damage, the controller checks the tempera-

ture, pressure, conﬁguration, etc. of the relevant safety components by

means of sensors and inputs. The controller’s display shows a series of

letters as a coded fault report. A fault code given corresponds with a

cause (see table “Coded fault reports”).

The controller shows the current faults one after the other.

Simultaneously pressing key-pad and can, after the fault has been

corrected, be used to conﬁrm the correction.

Faults are saved in a fault list. A password must be used to delete the list.

Call up of fault reports

(See chapter on trouble-shooting and customer service)

Differential pressure monitor

Fault deleted

High pressure

min. 5 sec.

automatic

2 sec.

automatic

2 sec.

automatic

2 sec.

short-term short-term

min. 5 sec.

REMKO RVS...H (INOX)

Overview of the operating structure

H01: Conﬁguration unit

H02: Number of cycles

H03: Number of evaporators

H04: Number of compressors per cycle

H05: Conﬁguration circulation pump

H06: Digital input cooling/heating

H07: Digital input On/Off

H08: Conﬁguration controller

H09: Key lock controller

H10: serial address controller

H11: Conﬁguration digital outlets

H12: Conﬁguration 4-way reversing valve

r01: Target value cooling

r02: Hysteresis cooling

r03: Target value heating

r04: Hysteresis heating

r05: Rotation compressor 1/2

r06: Conﬁguration compressor mode

r08: max. activation time compressor

r09: min. activation time compressor

r10: max. deactivation time compressor

r11: min. deactivation time compressor

r12: Hysteresis deactivation compressor

r24: Target value autom. Switching

r25: Target value AT deactivation compressor

r26: Target value dehumidiﬁcation cooling

r27: Regulation medium volumes

r28: Minimum mode compressor medium K

r29: Hysteresis compressor medium K

r30: Minimum mode compressor medium H

r31: Hysteresis compressor medium H

r32: Target value "Hot start"

r33: Hysteresis "Hot start"

t01: Real time setting hour

t02: Real time setting minute

t03: Real time setting day

t04: Real time setting month

t05: Real time setting year

t06: Setting hour start cooling

t07: Setting minute start cooling

t08: Setting hour stop cooling

t09: Setting minute stop cooling

t10: Setting hour start heating

t11: Setting minute start heating

t12: Setting hour stop heating

t13: Setting minute stop heating

t14: Setting hour start LN cooling

t15: Setting minute start LN cooling

t16: Setting hour stop LN cooling

t17: Setting minute stop LN cooling

t18: Setting hour start LN heating

t19: Setting minute start LN heating

t20: Setting hour stop LN heating

t21: Setting minute stop LN heating

P01: Delay ﬂow monitor before start

P02: Delay ﬂow monitor mode

P03: Delay ND

P05: Fault reset

P06: Icon cooling/heating /

P08: Conﬁguration dig. Input 1

P09: Conﬁguration dig. Input 2

P13: Conﬁguration input B4

P15: Conﬁguration ND

P16: Fault excess temperature

P17: Delay excess temperature

P19: Fault insufﬁcient temperature

P20: Conﬁguration operating start

P21: Conﬁguration fault relay

P22: Delay ND heating

P23: Delay ND defrosting

P25: Conﬁguration dig. Output 2

P26: Conﬁguration dig. Output 3

P27: Conﬁguration dig. Output 4

P28: Conﬁguration dig. Output 5

P34: Conﬁguration dig. Input 5

P35: Deactivation fault relay via

P36: Conﬁguration HD

01: sensor type B1

02: sensor type B2

03: sensor type B3

04: sensor type B4

13. Calibration B1

14. Calibration B2

15. Calibration B3

16. Calibration B4

21: Digital ﬁlter

22: Input limit

23: Unit of measurement °C/°F

A01: Target value frost protection

A02: Hysteresis frost protection

A03: Time delay frost protection

A04: Target value medium heating

A05: Hysteresis medium heating

A06: Sensor medium heating

A07: min. frost protection setting

C01: min. working time compressor

C02: min. down time compressor

C03: Time delay On-On compressor

C04: Time delay On-On compressor 1/2

C05: Time delay Off-Off compressor 1/2

C06: Switch-on delay compressor

C07: Switch-on delay pump-compressor

C08: Switch-off delay compressor-pump

C09: max. working time compressor step 1-2

C10: Working time compressor 1

C11: Working time compressor 2

C12: Working time compressor 3

C13: Working time compressor 4

C14: Maintenance fault compressor

C15: Working time circulation pump 1

C16: Working time circulation pump 2

C17: min. stop time before operation circulation pump

C18: min. working time circulation time

C19: Delay 4-way valve - compressor

d01: Function mode defrosting

d02: Input parameter °C/P

d03: Target value defrosting start

d04: Target value defrosting end

d05: min. working time defrosting start

d06: min. defrosting duration

d07: max. defrosting duration

d08: Delay defrosting interval cycle 1

d09: Delay defrosting interval cycle 1-2

d10: external contact defrosting start

d11: Frost protection heating

d12: Wait time before defrosting

d13: Wait time after defrosting

d14: Defrosting cycle 2

d15: Defrosting start cycle 2

d16: Forced ventilation time after defrosting

d17: Target value air circulation defrosting

d18: max. exterior temperature (slid. defr.)

d19: Hysteresis defrosting start (slid. defr.)

d20: Hysteresis exterior temperature (slid. defr.)

F01: Conﬁguration fan output

F02: Operating mode fan

F03: min. initial speed

F04: max. initial speed

F05: Target value cooling mode °C/P

F06: Hysteresis value cooling mode °C/P

F07: Hysteresis min speed cooling

F08: Target value heating mode °C/P

F09: Hysteresis heating mode °C/P

F10: Hysteresis min speed heating

F11: Fan start-up period start with 100%

F12: Pulsing fan start-up period

F13: Function mode fan defrosting

F14: Pre-ventilation cooling

F15: Low noise activation

F16: Hysteresis low noise mode cooling

F17: Hysteresis low noise mode heating

b01: Current value sensor medium intake B1

b02: Current value sensor medium output B2

b03: Current value sensor condenser B3

b04: Current value HD-pressure transducer B4

Conﬁguration

Password

Display Display

Parameter value Display

Password level

Current values

sensors

Compressor

Defrost

Fan

Units

Faults

Controller

Software

version

Real time clock

(not usable)

Frost protec-

tion

min. 5 sec. short-term short-term

+ / Password level Display

Direct / without PW _d_

User / partly special _U_

Superuser / special _S_

Factory / manufacturer _F_

Care and maintenance Shut-down

Temporary shut-down

1. Shut down the interior of the

system using the remote

control.

2. Shut the unit down either by

the internal controller or by us-

ing the remote.

3. Check the proportion (percent-

age) of glycol.

4. Check the unit for visible signs

of damage and clean it as

described in the chapter “Care

and maintenance”.

5. As much as possible, cover the

unit with a plastic foil to protect

it against the weather.

If only water and not a mix-

ture of water and glycol

is used, in regions subject

to freezing, water must be

drained from system when

it is not in operation The

drained water volume must be

replaced when system is put

back into operation!

! CAUTION

Permanent

shut-down

Ensure that equipment and com-

ponents are disposed of in accord-

ance with local regulations, e.g.

using certiﬁed ﬁrms and recycling

specialists or at collection points.

REMKO GmbH & Co. KG or your

contractual partner will be pleased

to provide a list of certiﬁed ﬁrms in

your area.

Regular care and maintenance of

the system will ensure trouble-free

operation and a long service life.

Prior to performing any work,

The system must be switched

off and isolated from the

power supply and secured to

prevent accidental switch-on!

! CAUTION

Wearing appropriate protec-

tive clothing is necessary when

working on the system.

! CAUTION

Care

■

Ensure the unit is protected

against dirt, mould and other

deposits.

■

Clean the unit using a damp

cloth. Do not use a jet (high

pressure).

■

Do not use any caustic, abra-

sive or solvent-based cleaning

products.

■

Clean the ﬁns on the unit prior

to long shutdown periods.

Maintenance

■ We recommend an annual

maintenance contract with an

approved specialist company.

This ensures the operational

reliability of your system!

TIP

List of task

Checks / maintenance / inspection

Commis-

sioning

Monthly

Half-yearly

Yearly

General •

Clean dirt traps • •

Check medium charge • •

Check circulation pump • •

Dirt / damage condenser • •

Check quality of the glycol • •

Measure voltage and current • •

Check direction of rotation • •

Check compressor • •

Check fan • •

Check refrigerant charge • •

Check condensation drain • •

Test insulation • •

Leak test for refrigerant cycle • • 1)

The local law can require a

leak test of the cooling system

and the quantity of cooling

medium to be checked. In-

spection and documentation is

to be carried out by qualiﬁed

personnel.

NOTE

1) see note

REMKO RVS...H (INOX)

The system has been manufactured using state-of-the-art production methods and in house tested many times to

ensure the system is 100% in working order. If malfunctions should occur, please check the system as detailed in

the list below. For installations with an indoor-outdoor system, observe the chapter “Trouble-shooting and customer

service” in both operating manuals.

Please inform your dealer if the system is still not working correctly after all the function checks have been per-

formed.

Touble-shooting and customer service

Malfunctions

Please note that this trouble-shooting table continues on the next page

Fault Possible cause Check Remedial measures

The unit

does not

start

Display is not illuminated.

No power supply

Check the power connections at the mains

and the voltage values.

Check breaker switches/fuses at the second-

ary side of the supplemental transformer.

Incorrect phase sequence.

The KA3 phase sequence relay

did not enable.

Replace power supply phase conductorat the

at the terminal strip on the switch panel.

The display is illuminated but

the unit does not start.

Unit in STAND BY See paragraph "Key functions" for the acti-

vation of the unit.

No external enabling contact

is shortened

Check connection to the GND - ID5 termi-

nals.

The unit does not start, the

compressor icon in the display

is blinking.

Start-up delay Wait out the start-up delay (max 360 sec.),

the compressor should then start.

The display blinks and

alternately shows an

alphanumeric code and the

temperature value.

One or more protective

devices have responded

Check which safety device has responded,

correct the cause of the fault and reset the

safety device (see "Fault display by code")

Compressor overload switch is

activated.

Does the compressor icon light

up and does the switch have

voltage?

Have specialist replace switch or compressor.

The unit

is work-

ing with

reduced

cooling/

heating

capacity

Thermal load was increased. Have there been any structural

changes? Maintain safety clearances.

Supply temperature too high

(cooling) / too low (heating).

If the medium outlet tempera-

ture is approx. 5 ... 10 °C /

35 ... 40 °C?

Increase/reduce medium intake temperature.

Air in the medium cycle. Are automatic bleeders in-

stalled at the highest point? Bleed manually or install automatic bleeders.

Condenser / evaporator tem-

peratures too high (cooling) /

too low (heating).

Are the ﬁns clean / free of ice

and the operating limits

complied with?

Comply with operating limits

Cooling: Clean ﬁns, provide shade for the

unit, heating: Reduce supply temperature

Incorrect parameter setting. Check setting. Change setting.

Pulse mode because of too

little demand. Is the system oversized?

Increase medium ﬂow with the installation of

a storage tank.

Medium

discharge

Leak in the lines or insulation

defective.

Are there leaks and are all of

the lines insulated? Seal and insulate.

Defrosting phase in heating

mode. Heating mode set? Normal operating status.

Fault Code Possible cause check Remedial measures

The unit

does not

start or

switches

itself

off.

Mains failure Does all other electrical equip-

ment function correctly?

Check voltage and if necessary

wait until turned on again.

Unit's breaker/mains switch

turned off Is voltage available to the unit? Switch on unit's breaker/ main

cycle breaker.

Wait time too short Is the compressor icon ﬂashing? Plan for longer wait period.

Mains current has incorrect

direction of rotation.

Has the phase sequence relay

switched? Change direction of rotation.

Controller is not working

Is the icon for cooling mode, heating

mode or Stand-By mode illuminated?

Energise and

select operating mode.

Medium intake temperature or

parameter setting wrong Check setting. Change setting.

No alarm / fault Check the contact "external

enable"

Open / close

the contact being used.

E1 Medium intake probe defective Check resistance at B1 Replace defective probe.

E2 Medium outlet probe defective Check resistance at B2 Replace defective probe.

E3 Condenser probe defective Check resistance at B3 Replace defective probe.

Outdoor temperature probe

Cooling cycle pressure transducer

defective

Check resistance/voltage at B4 Replace defective tranceducer.

HP1

High pressure fault Compressor relay switched on? Have checked by a specialist.

High pressure fault

Are the fans turning?

Is the condenser's air intake free

of obstacles?

Have checked by a specialist.

High pressure fault at pressure

tranceducer PT

Is the value at B4 greater than

40 bar? Have checked by a specialist.

LP1 Low pressure fault Is the pressure in the cooling

cycle OK? Have checked by a specialist.

Ht Excessive temperature medium

intake

Is the return temperature greater

than 50°C?

Reduce temperature of the

medium

Excessive temperature con-

denser

Are the fans turning?

Is the condenser's air intake free

of obstacles?

Have checked by a

specialist.

Excess temperature condenser Have the operating temperatures

been exceeded? Shut down the system.

Antifreeze alarm has

responded

Is the supply temperature greater

than or less than 4°C?

Increase return temperature,

Increase medium ﬂow volume,

Set frost protection temp.

Medium volume in the system

too low

Has the minimum medium vol-

ume been complied with?

Comply with minimum medium

volume e.g. in the reservoir.

Differential switch /

Flow switch

has responded

Are the following points OK:

- Medium ﬂow volume

- No air in the medium lines

- Output of the circulation pump

- Does the ﬂow switch operate

- Shut-off devices open

- Medium pressure to low

Have checked by a

specialist.

D1 Fault defrosting Maximum defrosting duration

exceeded Have checked by a specialist.

Hc1 Compressor 1 maintenance Maintenance interval compressor

1 has been reached.

After maintenance by a special-

ist reset of the operating hours

see chapter "Querying the

operating status".

Malfunctions

REMKO RVS...H (INOX)

Fault indicated by code

Code Fault type Re-set Intake type Cut-off

Intake value

Automatic

Manual

Digital

Analog

Compressors

Condenser fan

Circulation pump

A1 Antifreeze alarm medium cycle

B2 P05 OWT 13/11 x x

AHt Excess temperature at start

B1 / P16 x IWT 10 x x

ALt Insufﬁcient/or excess temperature at start C/H

B1 / P19 x IWT 10 x x

CP1 Compressor 1

x x

E1 Temperature sensor medium intake defective

B1 x IWT 10 x x x

E2 Temperature sensor medium output defective

B2 x OWT 13/11 x x x

E3 Temperature sensor condenser defective

B3 x PT 14/12 x x x

E4 Pressure tranceducer cooling cycle defective

Bn/V+ x PS Bn/V+

EHS High supply voltage controller

x x x x

ELS Low supply voltage controller

Tr x x x x

EP1 EEPROM driver defective

x x x x

EPb EEPROM fault at start

Conﬁg. x x x x

EPr EEPROM fault during operation

Conﬁg. x x x x

FL Flow monitor has responded

ID1 x FS 6/9 x x x

Hc1 Maintenance interval compressor 1

C14 x

Ht Excessive temperature medium cycle

B1 / P16 x IWT 10

HP1 Pressure switch HD cooling cycle

ID3 <3/hrs <3/hrs HP 2 x on 1 min.

HP1 Tranceducer cooling cycle excess pressure

Bn/V+ x PS Bn/V+ x x x

LP1 Pressure switch ND cooling cycle

ID4 <3/hrs <3/hrs LP 3 x x

tC1 Overload cycle 1

P08-13 x x x

tEr Communication cabled remote control

x x x x

tP General overload

P08-13 x x x x

Reports

LA General reports

P08 x

D1 Report defrosting

dF1-2 Defrost cycle exceeded

Defrosting

period

x x x

Reset

1. Faults with automatic reset: The reset is carried out automatically.

2. Faults with manual reset: The reset can only be carried out by a specialist after the fault has been corrected.

3. Faults with semi-manual reset: The reset is ﬁrst carried out automatically, afterwards only a manual reset is possible

by a specialist, after the fault has been corrected.

Fault Code Possible cause check Remedial measures

The unit

does not

start or

switches

itself

off.

ELS/EHS Low/High supply voltage

controller

Initial voltage transformer, or mains

inlet voltage

Have checked by a

specialist.

EP1 EEprom controller error Does the controller operate properly? Have specialist check regulation or

parameters.

EPr EEprom controller error Does the controller operate properly? Have specialist check regulation or

parameters.

Malfunctions

Installation instructions for qualiﬁed personnel

■

To install the system it is impor-

tant to follow the installation

instructions for both the chiller

and the chilled water system

(indoor system) or heating

system when installing the

entire system.

■ The indoor system and the

chiller work independently. A

connection between the two is

not necessary.

■

Transport the unit in its original

packaging as close as possible

to the installation location to

avoid damage.

■

The units may only be moved

upright (installed position) using

appropriate transport equipment

(Figure 1).

Secure against tipping!

■

The unit must be kept upright

when transporting to a higher

elevation (Figure 2).

■

Check that the packaged con-

tents are complete and inspect

the system for any visible signs

of transport damage.

Report any damage immediate-

ly to your contract partner and

the shipping company.

■

Select an installation location

with free air movement both

for the inlet and outlet. See

section “Minimum clearances”.

■

Do not install the unit in the

immediate vicinity of devices

with intensive thermal radia-

tion, this will reduce the cooling

capacity.

■

Lift the unit only at intended

lifting points. Never stress the

medium or refrigerant pipings.

■

The medium connection lines,

valves and connections must be

insulated against vapour

density. If necessary, also insu-

late the condensate line (only

units with HP-function). In dual

systems with cooling and

heating modes, the

requirements of the current or

other local law (EnEV) are to be

complied with.

■

Seal off open lines against dirt

and never kink or crimp the

lines.

■

Avoid unnecessary bending.

■

Establish all electrical connec-

tions connections in accordance

with the relevant DIN- and VDE

or other local standards.

■

Always fasten electric wiring

properly to the terminals,

otherwise there is a risk of ﬁre.

■

Comply with all regulations

governing structural and build-

ing requirements and conditions

with regard to the installation

site.

■

In the selection of the installa-

tion site, pay attention to the

site itself and to any possible

noise reﬂexion from the sur-

roundings.

■

To avoid the transmission of

vibrations the units must be

installed on vibration absorbing

material or on vibration iso-

lated foundations. In doing so,

make sure that the lines are also

vibration isolated.

■

If the installation site must fulﬁl

special noise emission require-

ments, this must be done on

site where appropriate adjust-

ments can be made. In this

cases, please consult a noise

level expert.

Important information

before installing

1 Correct way to move

2 Correct way to lift

Lifting point

REMKO RVS...H (INOX)

Wall openings

■

We recommend that the inside

of the opening be padded or

lined for example with a PVC

pipe to prevent damage to the

pipe lines

■

After installation, the wall

opening should be sealed off

with a suitable sealant. Do not

use materials containing cement

or lime!

Installation material

The system is secured on vibration

absorbers (accessories) to the ﬂoor

by means of bolts. The carrying ca-

pacity of the console and the wall

must be taken into account when

fastening to the wall.

Selection of the installation

location

The unit is designed for horizontal

installation on a base in outdoor

areas. The installation site must be

level and ﬁrm. The unit should be

secured to prevent toppling.

The unit can be installed outside as

well as inside a building.

In the case of outdoor installation,

please follow the instructions given

below to protect the unit against

the weather.

Rain

The unit should be at least 10 cm

off the ground when mounted on

the roof or ground.

For cooling and heating systems

(only HP-function) elevated instal-

lation increases the heating

capacity.

Sun

The ﬁnned condenser gives off

heat in the cooling mode.

Exposure to sunlight further in-

creases the temperature of the ﬁns

and reduces the heat released by

the ﬁnned heat exchanger.

The unit should, whenever pos-

sible, be installed on the north side

of the building.

If necessary, take measures to pro-

vide sufﬁcient shade (responsibility

of customer).

This can be done by building a

small roof covering.

However, the discharging warm air

ﬂow must not be affected by this.

Wind

If the system is being installed

where it is windy, care must be

taken that the discharged warm air

(cooling mode) is carried off in the

prevailing wind direction. If this is

not possible, it may be necessa-

ry to install a windbreak on-site

(Figure 3).

Ensure that the windbreak does

not adversely affect the air intake-

to the unit.

Snow

The system should be wall-mounted

in areas where there is heavy snow-

fall. Mounting should be at least 20

cm above the expected snow level

to prevent snow from getting into

the system (Figure 4).

Installation inside buildings

■

Ensure that heat can dissipate

adequately when placing the

outdoor unit in cellars, attics,

adjoining rooms or halls

(Figure 5).

■

Install an additional fan with

the same air ﬂow as that of the

outdoor unit being installed in

the room which can compen-

sate any additional pressure

losses. (Figure 5, Page 20).

■

Ensure a continuous and unob-

structed air ﬂow from outside,

preferably using sufﬁciently

large air openings (Figure 5,

Page 20).

Cooling or heating perform-

ance changes as a conse-

quence of the ambient condi-

tions inﬂuenced by rain, sun,

wind, and snow.

NOTE

Wind

3 Windbreak

20 cm

Snow

4 Minimum clearance to snow

RVS 60H RVS 75H RVS 100H RVS 150H

A 250 250 350 350

B 250 300 350 400

C 1000 1200 1500 1500

D 600 600 800 800

E 600 600 700 700

All values in mm

■

Comply with any regulations

and conditions affecting the

structure of the building. If

necessary, use sound reducing

material.

Warm air Cold

fresh air

Light

well

Chiller

Warm air

Light

well

Additional

fan

5 Installation inside buildings (cooling mode)

Minimum clearances

The following illustration indicates

the minimum clearances for trou-

ble-free operation of the system.

These protection zones serve to

ensure unrestricted air intake and

discharge, as well as providing suf-

ﬁcient room for performing main-

tenance and repairs and prevent-

ing the unit from being damaged.

Minimum clearances

RVS 60H / RVS 75H RVS 100H / RVS 150H

REMKO RVS...H (INOX)

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Remko RVS75H User manual

Brand: Remko

Model: RVS75H

Category: Heat pumps

Type: User manual

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