420010409701
Instructions for Use
for authorised technicians only
Compact integrated heat pump
AEROPUR CRX
2
Contents
General ......................................................................................................................................................... 3
General information R-410A ............................................................... 3
Safety procedures .............................................................................. 3
Equipment installation ........................................................................ 4
Electrical connections ......................................................................... 4
Warnings ............................................................................................ 4
Installation ................................................................................................................................................... 5
Overall dimensions ............................................................................. 5
Minimum distances ............................................................................. 5
Technical data .................................................................................... 5
Cable outlet opening procedure .......................................................... 6
Method of removing front panel........................................................... 6
Condensate outlet pipe and pre-drilled holes in the base ...................... 6
Performance limits .............................................................................. 6
Product description ..................................................................................................................................... 7
Hydronic module ................................................................................ 7
Hydraulic circuit .................................................................................. 7
Hydraulic connections ................................................................................................................................. 8
Pump anti-seize.................................................................................. 8
Cleaning the system and water properties........................................... 8
Features of the system ........................................................................ 9
Example of hydraulic circuit ................................................................ 9
Electrical connections ............................................................................................................................... 10
Wire control ...................................................................................... 10
Power supply to unit ......................................................................... 10
Connection of auxiliaries and switches .............................................. 10
Connection of auxiliary accessories ................................................... 11
PIN terminal block connections ......................................................... 13
System check ............................................................................................................................................. 13
Inverter board alarm codes AEROPUR CRX 012 ............................... 13
Inverter board alarm codes AEROPUR CRX 015 ............................... 14
GMC board alarm codes ................................................................... 15
Safeguarding devices ................................................................................................................................ 15
Maintenance ............................................................................................................................................... 15
Electrical connection diagrams Aeropur CRX 006 ............................................................................. 16
Aeropur CRX 008 ............................................................................. 18
Aeropur CRX 012 ............................................................................. 20
Aeropur CRX 015 ............................................................................. 22
General
3
General information
R410A Safety procedure
Use of the unit
General information R410A
• The air conditioner uses the new
eco-friendly HFC (R410A) coolant
which does not damage the ozone
layer.
• The R-410A coolant works at
pressures 50%-70% higher than
the R-22. Ensure that maintenance
equipment and replacement
components are suitable for
operation with the R-410A.
• R-410A coolant cylinders are fitted
with an immersion tube which
allows liquid to flow from a cylinder
in vertical position with the tap at
the top.
• R-410A systems must be primed
with liquid coolant. Fix any
commercially available dispensing
instrument to the sleeve tube to
convert the liquid coolant to gas
before it enters the unit.
• R-410A, like other HFCs, is
only compatible with oils
recommended by the
compressor manufacturer.
• The vacuum pump is not
sufficient to free oil from
moisture.
• Oils absorb moisture quickly.
Do not expose oil to moisture.
• Never expose the system to the
atmosphere while it is under
vacuum.
• If it is necessary to open the system
for maintenance, break the vacuum
with dry nitrogen.
• Do not disperse R-410A into the
atmosphere.
Only use the unit as authorized by the
manufacturer.
The unit’s capacity and codes are
given on the data plate.
Safety procedure
• This Manual and the product
contain important safety
information
• Before installing the unit, read this
installation manual carefully and
keep it for future consultation. The
Manual contains important
information for correct installation.
• Before any repair or maintenance,
consider potential risks carefully and
take suitable measures to ensure
personal safety.
• Do not try to repair, move or reinstall
the unit without the assistance of a
qualified technician.
The manufacturer does not accept any
liability and will declare the unit’s
guarantee null and void where
damage is caused by:
• Incorrect installation, including
failure to follow the instructions in
the relevant manuals.
• Modifications to or errors in
electrical connections or
refrigerators or hydraulic
connections.
• Use of the unit in conditions
different from those indicated.
All material used in packaging the
new unit
is environmentally friendly
and recyclable.
Meaning of designations
Danger: indicates risk of death or
serious injury in the event of incorrect
use.
Warning: Indicates risk of death or
serious injury in the event of incorrect
use.
Attention: Indicates risk of injury or
damage to property, furniture or
animals where instructions are not
followed.
The unit’s capacity and codes are
given on the data plate.
Use of the unit
• Check that personnel wear
appropriate personal protection
devices.
• Check if any damage has been
caused by the transport or
movement of the equipment, and
send any claim immediately to the
shipping company.
• Dispose of packaging in
compliance with local regulations.
• Do not raise the unit by inserting
hooks in the side bars but use
specified equipment (lifting gear,
trolleys, etc.).
• Do not climb on an external unit or
place objects on it that may cause
injury or damage to the unit.
• Do not place containers of liquid or
other objects on the unit.
The unit is not intended for use by
those (including children) whose
physical, sensory or mental capacity
is reduced,
or by those with lack of
experience or knowledge, except
with the benefit of a person
responsible for their safety,
supervision or instructions on the
use of the unit.
Children must be supervised to
ensure they do not play with the
unit.
4
General
Installation of the unit
Electrical connections
Warnings
Installation of the unit
Installation must be carried out by a
qualified installer.
DO NOT INSTALL in locations:
• With difficult access for installation
and maintenance.
• Near heat sources.
• That may increase the unit’s
vibration.
• With inadequate surfaces for the
weight of the unit.
• Subject to the risk of exposure to
combustible gas.
• Exposed to oil fumes.
• With extraordinary environmental
conditions.
Selection of installation location
• Select a location where sound and
exhaust do not cause nuisance in
the vicinity.
• Select a position sheltered from the
wind.
• Select an area with the
recommended minimum spacing.
• Select a location that does not
obstruct access to doors or
corridors.
• The floor surface must be strong
enough to bear the weight of the
unit and to minimise
transmission of vibrations.
The unit should be secured to the
base with bolts (not supplied,
arranged by installer).
If the unit is installed in areas subject
to heavy snow, it will be necessary to
raise it to at least 200 mm above the
usual level reached by the snow or
alternatively to use the unit’s
suspension bracket.
Electrical connections
All electrical connections carried
out on site are the responsibility of
the installer.
Attention:
• Correctly connect the cables to
prevent damage to electric
components.
• Connection to the mains supply is of
the Y type, for which reason cable
replacement should only be carried
out by the technical support service
so as to prevent any risk.
• When wiring, use the cables
specified and connect them
securely to the relevant terminals.
Danger:
• Electric shocks may cause severe
personal injury or death. Electrical
connections must be carried out only
by qualified persons.
• Do not alter the unit by removing
safety measures or bypassing safety
switches
Contact the support service in the
event of the following:
• Supply cable overheated or
damaged;
• unusual noise during operation;
• frequent launch of safeguarding
devices;
• unusual smells (such as the smell
of burning).
Attention:
• Check that personnel wear
individual protection devices.
• Special maintenance must be carried
out by qualified personnel.
Disconnect the mains supply before
any maintenance operation or before
handling any component inside the
unit.
Attention:
• The air conditioner contains coolant
which requires special disposal.
• When its service life is ended,
remove the air conditioner very
carefully.
• The air conditioner must be taken
to an appropriate collection centre
or to the seller who will arrange for
its correct and proper disposal.
Warning:
• The unit complies with the directives
on machinery (2006/42/CE),
electromagnetic compatibility
(2004/108/EC) and pressure
systems (EEC/97/23).
• To prevent electric shocks or fires,
check that electrical connections are
carried out only by qualified
personnel.
• Ensure that the electric power
system complies with current
national safety standards.
• Observe the national safety
legislation in force.
• Ensure that an effective earthing
line is available.
• Check that the voltage and frequency
of the electric machinery meet
requirements and that the installed
power available is sufficient to support
the operation of other appliances
connected on the same power lines.
• Ensure that the impedance of the
supply line complies with the unit’s
power consumption indicated in the
information on the unit’s plate (EN
61000-3-12).
• Ensure that suitable circuit
breakers
and safety switches
have been installed near the
unit.
• Mains supply disconnection
devices must allow complete
disconnection under conditions of
category III overvoltage.
• Ensure that appropriate
earthing is available;
inadequate earthing can cause
electric shocks.
• Do not connect earthing cables to
gas or water pipes, lightning rods or
telephone earthing cables.
5
Installation
0
1000
Overall dimensions
Minimum distances
Technical data
Overall dimensions
models 012 ÷ 015
1
2
3
1 - Water inlet..... ø 1”
2 - Water outlet ....... ø 1”
3 - Fill/discharge ..... ø 1/2”
Minimum spacings for installation expressed in mm
are indicated in Fig. 2 (installation of 1 unit) and in
Fig. 3 (installation of more units).
NB:
The height of an external unit’s front and rear
barrier must be less than its own height.
models 006 ÷ 008
1 - Water inlet..... ø 1”
2 - Water outlet ....... ø 1”
3 - Fill/discharge ..... ø 1/2”
Minimum distances
150 300
300
300
1000
300
1500
2000
200
Technical data
Unit
Aeropur CRX
006 008 012 015
Compressor Type Rotary DC Inverter Technology
Water pump speed three speed
Expansion
Vessel
Capacity l 2 3
Pre-load pressure kPa 100
Water circuit content l 1 1.2 2.5 2.5
Hydraulic connections 1''M
Water circuit maximum
operating pressure
kPa 300
1
1
2
3
150
300
300
300
500
200
00
1000
200
200
Mod.
Dimensions (mm)
Weight
kg
A B C D E F G H L
006
908 821
326
350
87
356
466
40 60 61
008
908 821
326
350
87
356
466
40 60 71
012
908
1363
326
350
174
640
750
44 69 105
015
908
1363
326
350
174
640
750
44 69 130
500
150
1000
10
150
1000
6
Installation
Cable outlet opening procedure
Method of removing front panel
Condensate outlet pipe and pre-drilled holes in base
Performance limits
Before installation, check the base
is solid and level to avoid producing
abnormal noise. Based on all
dimensions and minimum spacing
requirements, attach the base
securely using the anchoring bolts
(anchoring bolts M10 x 2 couplings
supplied).
When an external unit needs installing in
a location exposed to strong wind,
ensure that the fan is operating normally
using wind protection.
Cable outlet opening procedure
Method of removing front panel
(Fig. 5)
1.
Remove front panel screws (See
fig. 5).
2.
Pull the front panel downwards by its
handle.
Condensate outlet pipe and pre-
drilled holes in base (Fig. 6)
If there is drainage through the
discharge pipe, collect a commercially
available discharge fitting
Performance limits
NB: For the 006 model plan a minimum External Air Temperature of +5°C.
(internal diameter: 16 mm).
If the unit is installed in a very cold
area or one subject to heavy snow
where there is a possibility of the
condensate discharge pipe freezing,
check the discharge capacity of the
pipe.
Discharge capacity increases when the
pre-drilled holes in the base that collect
condensate are opened (open pre-drilled
holes outwards with a hammer (B),
etc.).
Fig. 4
Fig. 5
150
430
Fig. 6
COOLING
HEATING
20
18
16
14
12
10
6
4
0
-5
0
5 10 15 20 25 30
35 40 45 50
External Air Temp (°C)
70
65
60
55
50
45
40
35
30
25
20
15
10
-25 -20 -15 -10 -5 0 5
10 15 20 25 30 35
External Air Temp (°C)
Outgoing water temp (°C)
400
363
37
Outgoing water temp(°C)
006
008-0
12-0
15
To enable the cable to pass through,
Remove pre-cut area out of which
electrical wires pass.
150
600
Do not remove the front panel of the unit
A
B
so that the pre-drilled area can be
easily punctured.
To remove the pre-drilled area of the sheet
metal, punch 3 connection points
using a Phillips screwdriver,
following the guide line, after which removal
is possible with one hand (See Fig. 4).
After you have opened the cable duct,
remove the burrs and install
safeguarding with the cables supplied,
so as to protect them.
7
Product description
Hydronic module
Hydraulic circuit
Hydronic module
The unit is fitted with an integrated
hydronic module which allows rapid
installation assisted by a few
external components. All
safeguarding and necessary valves are
inserted into the hydraulic circuit inside
the unit.
Refer to illustration on page 5
for precise connection of hydraulic
pipes.
NB: Correct sizing of the expansion
vessel depends on type of system and
installer's concerns.
N.B
: Discharge from the safety valve
can be channeled outside the machine
using the pre-drilled holes (see fig. 6).
In this case a visible outlet funnel must
be provided.
7
1
1
2
2
5
6
4
5
6
3
Integrated hydraulic circuit
1 automatic air outlet valve
2. flow switch
4
3 safety valve (output 1/2')
4 temperature sensor
5 circulation pump
6 plug for unblocking pump when seizes up
7 expansion vessel
4
4
3
Models 006 - 008 Models 012 - 015
7
8
Hydraulic connections
Pump anti-seize
Cleaning the system and water properties
Hydraulic connections
The plate exchanger hydraulic
connections must be carried out
using all components necessary and
completed with materials capable of
guaranteeing la water-tightness of the
thread joints. The illustration on the
next page shows a classic example
of the hydraulic circuit.
The hydraulic circuit must however be
completed in accordance with the
following recommendations:
- It is advisable to provide shut-off
valves that allow isolation of the most
important components of the system
and the heat exchanger itself.
Such
valves, which can be ball valves,
globe valves or butterfly valves,
must be of a size to cause the least
possible pressure drop when com-
pletely open.
Pump anti-seize
Appliances are fitted with an anti-seize
safeguard to the pump drive shaft. For
this function to operate correctly, the
system must not be emptied and the
power supply must not be switched off
during long periods of inactivity.
If, however, following a long period of
inactivity, the pump rotor shaft should
seize up, unblock it as follows:
- Turn off power
- Remove front panel
- Unscrew the safeguard plug of the
shaft at the back of the pump
- Insert a slotted screwdriver into
the groove and rotate the rotor
shaft
- Replace the safeguard plug
- Turn the system’s power supply back
on
Cleaning the system and water
properties
For new installations or when emptying
the circuit preventive cleaning of the
system must be carried out. To
guarantee the product’s good
performance, after any cleaning replace
water or glycol additive, check that the
liquid appears clean with no visible
impurities and that its hardness is lower
than 20°f.
mod. 006
60
55
50
45
40
35
30
25
20
15
10
5
0
- The system must be provided with
a drainage system at its lowest
point.
- Air outlets must be provided at the
highest point of the system.
- Pressure plug connectors and
manometers must be installed
upstream and downstream of the
pump.
- All pipes must be insulated and
adequately supported.
It is essential to adopt the following
precautions:
- The presence of solid particles in the
water can obstruct the heat
exchanger.
It is necessary to protect the
entrance to the heat exchanger
afterwards by means of a
removable mesh filter (optional,
not supplied). The gauge of the
filter’s mesh holes must be at
least10 links/cm
2
.
0
0,1 0,2
0,3 0,4
0,5 0,6
Q (l/s)
mod. 008
60
55
50
45
40
35
30
25
20
15
10
5
0
0 0,1 0,2 0,3 0,4 0,5 0,6
Q (l/s)
mod. 012 - 015
90
80
70
60
50
40
30
20
10
- After installing the system and
0
0
0,1
0,2
0,3
0,4
0,5
0,6
0,7
0,8
0,9
after any repairs to it, it is essential
Q (l/s)
to clean the entire system accurately,
paying particular attention to the condition
of the filter.
- To adjust the pump’s flow rate, you will
need to fit a suitable control valve on its flow
pipes during installation.
- Where water needs refrigerating at
temperatures lower than 5°C,
or if the unit is installed in areas subjected
to temperatures lower than 0°C, it is
essential to mix an appropriate amount of
monoethylene glycol inhibitor into the water.
Available pressure statistics (kPa) Available pressure statistics (kPa) Available pressure statistics (kPa)
9
Hydraulic connections
Features of the system
Example of hydraulic circuit
TABLE FOR CALCULATING WATER CONTENT IN SYSTEM
Unit Installed
.............
Content of unit (*) l
.............
Content of pipes (**) l
.............
Equipment (fan convectors, panels, radiators, etc.) (***) l
.............
Total content (****) l
.............
Important: total litres should never be less than 4 litres per kW T/F
(*) Consult technical data table
(**) Consult table of water content in pipes
(***) Consult manual on equipment installed
(****) The system water content must be included in the minimum and maximum value per unit with hydronic kit. The minimum
value is necessary to ensure optimum comfort.
Example of hydraulic circuit
Responsibility of installer
1 shut-off valves
2 In-line water filter (10 links/cm
2
)
3 manometer
4 filling valve
5 system discharge valve
(at lowest points of circuit)
6 air bleed valve
(at highest points of circuit)
7 3-way valve
8 domestic water storage tank
9 internal equipment
3
1
2
6
4
9
7
3
1
5
8
%
Monoethylene
glycol inhibitor
10%
20%
30%
40%
Freezing temp. (*)
-4 °C
-9 °C
-15
°C
-23
°C
Correction
Factors
Capacity
0.996
0.991
0.983
0.974
Power absorb.
0.990
0.978
0.964
1.008
Pressure
drop
1.003
1.010 1.020 1.033
(*) NB: temperature values are indicative. Always
refer to the temperatures indicated for the specific
product used
Unit
AEROPUR CRX
006
008
012
015
Nominal water
flow rate
Std
l/s
0,28 0,33 0,58 0,69
Plant water
content, unit with
expansion tank
Min
l
21 28 42 49
Max
l
65 65 95 95
Operating
pressure
Max
kPa
300 300 300 300
Filling
pressure
Min
kPa
120 120 120 120
Height difference
with unit at
lowest level
Max
m
20
20
20
20
Water content in pipes
Internal diameter
ø External
Litres/metres
copper
12 mm
14 mm
0.11 l/m
14 mm
16 mm
0.15 l/m
16 mm
18 mm
0.20 l/m
20 mm
22 mm
0.31 l/m
25 mm
28 mm
0.49 l/m
32 mm
35 mm
0.80 l/m
steel
12.7 mm (1/2'')
3/8'' Gas
0.13 l/m
16.3 mm (5/8'')
1/2'' Gas
0.21 l/m
21.7 mm (7/8'')
3/4'' Gas
0.37 l/m
27.4 mm (11/16'')
1' Gas
0.59 l/m
Electrical connections
Wire control
10
Power supply to unit
Auxiliary connections and switches
Unit
AEROPUR CRX
006_ 008_ 012_ 015_
Power supply V- ph - Hz 230 - 1 -50
Permissible voltage range V 207 ÷ 253
Maximum power absorbed kW 2,3 2,7 5,1 5,1
Maximum current absorbed A 11 14 23 20
Power supply
fuse
Type -- Type gL
Current A 16 - type B 16 - type B 25 - type D 25 - type D
Power supply cables mm² H07RN-F 3 x 2.5mm²
Pump maximum current
External circulation
A 2
Use H03VV-F 4x0.75 mm² cables to connect NETCON wire control and
H03VV-F 6x0.75 mm² cables to connect EASYCON wire control
Connect hydraulic pipes before
making electrical connections.
Connect earth before making electrical
connections.
Check voltage and frequency of power
supply to internal unit also.
On removing front panel, electrical
components are visible at front. Power
supply cables may be inserted in the
pre-drilled holes. Electrical cables must
be secured using grouping clips
available for purchase on the premises
so that these are not in contact with the
compressor and hot pipes. To ensure
the correct tensile strength, secure
electric cables with the cable ties on
the plate. (For size 015 only, use the
cable gland supplied)
NB:
The quality of the contacts must be
greater than 25mA - 12V
Wire control
For installation of wire remote control
consult the control installation manual.
Power supply to equipment
Select the cable, cables must be type
H07 RN-F (3x2.5 mm²).
In accordance with installation
instructions, all mains supply
connection devices must be fitted with a
contact opening (4 mm) to enable total
disconnection in compliance with
the conditions stipulated for class III
overvoltage. To prevent risks, the power
supply cable must only be replaced by
service personnel.
Auxiliary connections and switches
(Responsibility of installer)
NETCON
C W G Y 23 24 1
2 3 6
8
7 8 21 22
Alternative to
NETCON
S3
S2
S1
1 – 3-way valve
2 - Alarm or Defrosting / Dehumidifier
3 - Trace heater/ Additional water circulator
4 – External heat source / Defrosting
5 - Alarm / Signal for Ambient Temperature
Reached
6 – Reduction maximum frequency
7 – Demand for Domestic Water
8 – External alarm input
9 - External temperature sensor (NTC 3k - 25°C)
N N 18 10 11 12
9
1
2
4 5
16 13
14 15
6 7
S1: Off/On
S2: Cooling/Heating
S3: Normal/Economy
3
4
5
The Netcon application is certainly
the most complete method for
managing the system and therefore
remains the most recommended
solution.
However, in some cases there is a
higher need than what the Netcon can
manage and therefore when confronted
with these specific
cases, it is possible
to initiate (by parameter) the
identification of useful, clean contacts
in
order to be able to:
• ignite and shut down the unit
remotely
• effect hot /cold switching and night-
time functions
prior to preventive parameterisation.
Two functions cannot operate
simultaneously
, consequently you will
need to choose whether to entrust the
system and its management to
Netcon
alone or to clean contacts (see
illustration shown above).
11
Electrical Connections
Connection of auxiliary accessories
Three-way valves
Appliances enable control of a 3-way
valve for managing a domestic water
storage tank. The operational
concept is that where there is a
demand for domestic water by a
storage tank, the system manages a 3-
way valve to direct the hot water to the
tank alone and to operate at maximum
capacity to supply water at 60°C
(compatible with operating limits).
To run this, connect the 3-way valve
through PIN 18, N and 10 of the
terminal block (see fig. 17). PIN 18
(Line) and N (Neutral) supply power to
the valve (1ph ~ 230V, 2A max), while
on PIN
10 the control signal is
available (1ph ~ 230V, 2A max).
When using a spring return valve,
connect PIN 10 and N only.
The signal for domestic water demand
must be of a Dry Contact type (quality
of contacts greater than25mA - 12V),
which closes the circuit through PIN 15
and 13 of the terminal block (see fig.
17).
Attention: domestic water demand has
priority over programmed operation
mode, both in heating and cooling
mode.
Frequency limitation
To force the unit to operate at a lower
maximum frequency (to reduce noise
generated), if there is no Comfort User
Interface, introduce a clean contact
type switch (quality of contacts greater
than 25mA - 12V) through PIN 13 and
14 of the terminal block (see fig. 17).
With contact closed, the unit will
operate with a maximum frequency
lower than the norm, and vice-versa
will function in standard mode.
For correct functioning, you must first
configure the unit via parameters 5 and
6 of the NETCON User Interface menu.
Maximum noise reduction is around
3dB at 75% of the maximum
compressor operating frequency.
Stop Unit or Defrosting Signals
On the terminal block there are
signals for indicating particular
operating or stopping conditions of
the external unit.
The signals available are:
• Defrosting: while in Heating mode,
according to the external ambient
conditions, the unit may carry out the
defrosting cycle to clean the external
battery of any ice that has formed.
In these conditions, it is not possible
to guarantee the required
temperature for water output, which
may reduce general comfort.
(PIN: 4-N or 11-N, NETCON Code:
106 or 108)
• Alarm: an alarm condition is shown
resulting in the compressor
stopping.
(PIN: 5-N or 11-N, NETCON Code:
147 or 108)
• Ambient Temperature Reached: if
suitably programmed via the Comfort
User Interface, and functioning with
this interface, a signal indicates that
the pre-set temperature has been
reached. This signal can be used as
the window contact normally
implemented in fan coils.
(PIN: 5-N, NETCON Code: 147)
Some outlets are used for several
conditions. Via the installation menu of
the Comfort User Interface it is possible
to configure these outlets (refer to
33AW-CS1 manual). Refer to tables on
page 26 for correct pin-outs and use of
signals.
External temperature sensor
If the placement of the external unit
could cause a non
-
representative
external temperature reading by the
sensor on the machine, it is possible to
install an additional remote
temperature sensor (NTC 2 cables of
3kΩ - 25°C).
Connect the sensor heads via PIN
23
and 24 of the terminal block (see
diagram on page 10).
Dehumidifier or Humidifier
The unit can send an activation signal
to a second humidifier or dehumidifier
as far as detected by the humidity
sensor within NETCON. Connect the
dehumidifier or humidifier to terminals
N and 11; either a dehumidifier
(Contact NA) or a humidifier (contact
NC) is activated via a relay. Set the
NETCON code 108 (2 per
dehumidifier/humidifier). Configure
the humidity value limit (NETCON code
107) with regard to which of the
humidifier or dehumidifier will be
activated (for example if code 107 =
65, the dehumidifier is activated if the
relative humidity in the atmosphere
exceeds 65% including 5% hysteresis).
Additional water circulator
It is possible to connect a secondary
water circulator via terminals 12 and N.
Its regulation is as follows:
If OAT > temperature is set via
NETCON code 148.
The additional pump is activated
depending on how code 156 has been
set.
1.
Switched on or off according to the
operation of the heat pump’s main
circulator, in the case of activation of
domestic input the pump is on;
2.
Switched on or off according to the
operation of the heat pump’s main
circulator, in the case of activation of
domestic input the pump is off;
If OAT < temperature set via NETCON
code 148.
The additional pump is activated
depending on how code 157 has been
set.
(0. always off, 1. on/off according to
operation of auxiliary heater, 2. always
on).
Electrical connections
12
Connection of auxiliary accessories
Signal requesting an external heat
source (EHS)
An outlet (1ph ~ 230V, 2A max) is
available through PIN 4 and N of the
terminal block (see fig. 17) which can
be programmed via the remote
control Comfort User Interface (See
Control Manual, Installation Menu
code 106).
Two different strategies are possible
based on the external air temperature
value:
1) Shut-down of heat pump and
activation of auxiliary heat source. This
function is activated if the external air
temperature is lower than the value set
via NETCON code 148 (default value -
20°C). Here the heat pump switches
off while the auxiliary heater is
activated according to the following
logic (NETCON Code 154):
• The command is always active (ON)
(NETCON code 154 = 0) if the
auxiliary heater is allowed to be
managed by its own internal
regulation logic.
• ON/OFF dependent on the set-point
of the room temperature. (NETCON
code 154=1).
• ON/OFF dependent on the set-point
of the water temperature where
NETCON is not installed or
available (NETCON code 154=2).
2) Both the heat pump and the
auxiliary heater are activated
simultaneously where the thermal
power supplied by the heat pump is
not enough. This function is activated
when the external air temperature is
lower than the value set via NETCON
code 150 (but higher than the value
set via code 148). Here the unit
remains on while the auxiliary heater
only starts if the water temperature
drops below the set-point - 5°C (this
value can be set via NETCON code
152) for 10 minutes (this code can be
set via NETCON code 151). The
auxiliary heater switches off when the
water set-point is reached.
NB: Where a request for domestic hot
water is activated (contact closed
through pins 13-15) the heat pump is
reactivated and the auxiliary heater
switches off.
Attention:
Where any external heat source is
installed, it is necessary to supply and
fit a thermal switch on the water circuit
to protect the system from excessive
peaks in water temperature. This
safety device must be placed
immediately downstream of the
auxiliary heater.
External alarm input
An external alarm signal (clean contact)
can be received on terminal 21 of the
terminal block (see Fig. 17) forcing the
unit to shut down.
When the contact is closed (through
pins 21 and 3) the entire system
switches off (Unit off, water circulator
off, alarm n°2 on GMC card). As soon
as the clean contact is reopened, the
unit is reactivated and works according
to the last configurations. This signal
can be sent from various types of
external control systems and/or safety
devices. For example, the contact
might be closed in case of danger, via
an alarm signal sent by an external
safety device. In this mode the external
unit switches off without switching on
again until the contact reopens.
13
Electrical connections
System check
Pin terminal block
Inverter board alarm codes AEROPUR CRX 012
Description
PIN
Signal
Limits
Installation
code
Menu
33AW- CS1
Additional external temperature sensor
23 - 24 Input (NTC 3kΩ at 25°C) N.A. 126
Domestic Water Demand
13 - 15
Input (switch contact quality
>25mA at 12V)
N.A. 153
Reduction Compressor
Maximum Frequency
13 - 14
Input (switch contact quality
>25mA at 12V)
N.A. 5 - 6
3-way valve
10 - 18
- N
Output 230Vac (18-N:
Power supply, 10: signal)
1 ph ~ 230V,
2A
N.A.
1- External Heat Source Request
2- Defrosting
4 - N
Output, Relay Contact
1 ph ~ 230V,
2A
106 - 148 - 150
- 151 - 152
- 154 - 155
1- Alarm
2- Ambient Temperature Reached
5 - N Output, Relay Contact
1 ph ~ 230V,
2A
147
1- Alarm and Defrosting
2- Dehumidifier
11 - N Output, Relay Contact
1 ph ~ 230V,
2A
107 - 108
1- Trace heater
2- Auxiliary Circulator
12 - N Output, Relay Contact
1 ph ~ 230V,
2A
156 - 157
Alarm Input
21 - 3
Input (switch contact quality
>25mA at 12V)
N.A. N.A.
On/Off
6 - 3
Clean Contact
N.A.
N.A.
Normal/Economy
8 - 3 Clean Contact N.A. N.A.
Heating/Cooling
7 - 3 Clean Contact N.A. N.A.
Inverter board alarm codes
AEROPUR CRX 012 only
Failure of the inverter can be
diagnosed using the LED displays on
the external unit’s printed circuit
board. Use them for various checks.
Before a check, make sure all DIP
microswitch positions are set to OFF.
LED displays
Cycle check printed
circuit board
Cause
LED Display
D800 D801 D802 D803
D800 O: Red
D801 O: Yellow
D802 O: Yellow
D803 O: Yellow
Flashing
Off
on
m
l
l
l
Heat exchanger sensor error (TE)
l
l
m
l
Aspiration sensor error (TS)
m m
l
l
Hot gas discharge sensor error (TD)
l
m
l
m
High pressure safeguard error
l
m
l
l
External air temperature sensor error (TO)
m m m
l
External fan motor error DC
m
l
l
m
Error in communication via IPDU (system crash)
l
m
l
m
High pressure safeguard operation
l
m m
l
Over-hot gas discharge temperature error
m m
l
m
EEPROM error
l
l
m m
Error in communication via IPDU (system crash)
F
l
l
l
G-Tr short circuit safeguard
l
F
l
l
Detection circuit error
F
F
l
l
Current sensor error
l
l
F
l
Compressor block error
F
l
F
l
Compressor failure
Location cards
Key
A
Location 4 Led Inverter Board
Diagnostic (only models 012 and
015)
B
Location Led GMC Board Diagnostic
C
Installation terminal block
A
C
B
14
System check
AEROPUR CRX 015 inverter board alarm codes
Inverter board alarm codes
AEROPUR CRX 15 only
The current error and the last error (the
last error includes the current error) are
confirmed by LEDs D800 to D804
lighting up on the inverter board.
a) When all SW803 switches are in
the OFF position, the current error
is displayed.
b) If only switch 1 of the SW803 is
on, the last error is displayed (the
last error includes the current error)
c) If there is an error, LEDs D800,
D801, D802, D803, D804 light up
(Display 1)
d)
If button SW800 is pressed for
around 1 second the display will
change (Display 2)
e) When button SW800 is pressed
again or after 2 minutes, it will
return to the display relating to
display 1.
Current
error
SW803
Last
error
SW803
Display 1
(Initial
display)
Display 2
(pressing
SW800)
Type of error
lllllm
lllllm
Normal (no errors)
mmllmm
ll
F
ll
m
Flow temperature sensor error (TD)
l
FFll
m
Battery temperature sensor error (TE)
FFFll
m
Battery temperature sensor error (TL)
lll
F
l
m
External temperature sensor error (TO)
llFF
l
m
Aspiration temperature sensor error (TS)
F
l
FF
l
m
Heat dissipater temperature sensor error (TH)
FFFF
l
m
Sensor cable error (TE and TS)
FFFFF m
EEPROM error
llmlmm
F
llllm
Compressor failure
l
F
lllm
Compressor block
FFlllm
Current sensor error
ll
F
llm
Thermostat operation
llmlmm
l
F
l
F lm
Size not set
F
l
FFF m
Error in communication between cards
FFFFF m
Other errors
mmmlmm
FFlllm
Error on Flow Temperature
F
l
F
llm
Power supply errors
FFFllm
Error overheating heat dissipater
FFFFlm
Gas leak detection
FFll
F m
Inversion valve error
ll
F
l
F m
High pressure safeguard
l
FF
l
F m
Ventilation system error
l
F
l
FF m
Pilot elements short circuit
F
l
FFF m
Detection circuit error
ON
1 2 3 4
ON
1 2 3 4
Key
l
D800 Yellow
l
D801 Yellow
F
D802 Yellow
l
D803 Yellow
l
D804 Yellow
m
D805 Green
l
: S Off
m: On
F: LFlashing
15
System check
Safeguarding devices
Maintenance
GMC card alarm codes
GMC card alarm codes
On the GMC card there is an LED for
showing any errors relating to the card.
Flashing LED enables you to identify
the error code according to the table on
the right. If there is more than one
error, the highest priority error will be
displayed until it is resolved. Where
function is normal, the LED flashes at a
frequency of ½ Hz. In the event of an
error, the LED remains off for 4
seconds and thereafter flashes a
number of times equal to the error
code at a frequency of 1Hz, then
remains off again for 6 seconds.
Where the error code is made up of 2
figures, the flashing is interrupted for 2
seconds with a display of the first
figure and then the second.
e.g: error 23: 4 seconds LED Off. 2
flashes at a frequency of 1Hz. 2
seconds off. 3 flashes at a frequency
of 1Hz. 6 seconds off.
Cycle repeats until shut-down, problem
resolution or a higher priority error.
Safety
Controls
Activation Release
Pressure
switch on
hydraulic
circuit
300kPa
N.A.
Anti-freeze
protection
Adjustable
from 3 to
9°C
Controlled
by
software
Compressor
launch
delay
OFF-->ON
180 s max*
Compressor
stop delay
ON-->OFF
180 s*
Compressor
surge
current
launch limit
6 surge current/h*
The rationale for protecting the 6
switches/h is a priority
Important:
During the heat pump’s operation in
heating mode, the unit carries out
defrosting cycles to eliminate any ice
forming on the external unit through low
temperature.
Maintenance
Cleaning the battery
If necessary, for more careful cleaning
of the battery, follow the directions
below:
Switch off the power supply circuit.
Remove the top cover of the unit by
undoing the fixing screws.
Lift the cover.
Carefully clean the battery by suction
starting from the inside towards the
outside.
With the same suction, remove
dust from the opening and the
ventilator blades.
Be careful not to damage the blades
in order to prevent vibration and
unusual noise.
Replace the cover and do up the fixing
screws.
Important:
This must be carried out by qualified
personnel.
Coolant level check
Checking is necessary when coolant
has been lost or the compressor
replaced. The best system for correct
coolant level checks involves
completely emptying the
coolant circuit with a suitable coolant
recovery apparatus, afterwards
introducing the precise quantity of
coolant as indicated on the unit’s
specification plate.
R-410A systems must be charged with
liquid coolant. Use the appropriate
charging apparatus (commercially
available) to ensure correct management
of the coolant.
Error
code
Description
2 External alarm signal
3 Water input temperature sensor
(EWT)
4 Refrigerant temperature sensor (TR)
5 Air temperature sensor GMC
6 Communication lost with NETCON
control
7 NETCON control ambient
temperature sensor
9 Water/water pump sensor error
10 EEProm Corrupted
13 Loss of communication RS485
(system configuration type 6)
14 Loss of inverter board signal or
compressor temperature sensor
15 Water outlet temperature sensor
(LWT)
16 Alarm Test
17 Inverter air temperature sensor(TO)
18 G-Tr short-circuit safeguard
20 Compressor rotor position control
error
21 Inverter current sensor error
22 Refrigerant exchange sensors or
compressor aspiration (TE) / (TS)
23 Compressor set temperature sensor
(TD)
24 Fan motor error
26 Other inverter card errors
27 Compressor blocked
28 Flow temperature error
29 Compressor failure
16
Aeropur CRX 006
wiring plan
Electrical wiring plans
7
Electrical wiring plans
Aeropur CRX 7 wiring plan
18
Aeropur CRX 008
wiring plan
Electrical wiring plans
9
Electrical wiring plans
Aeropur CRX 9 wiring plan
11
Aeropur CRX 0010
wiring plan
Electrical wiring plans
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