Technibel PMHRV 2044 User manual

1
March 2005 10 11 384 - GB - 04
INSTALLATION INSTRUCTIONS
AIR COOLED WATER CHILLER HEAT
PUMP
WITH BUILT-IN HYDRAULIC MODULE
R 407 C refrigerant
PMHRV 2044 / 2072

2
MARKING
This product marked conforms to the essential requirements of the Directives:
- Low voltage no. 73/23 EEC, modified 93/68 EEC.
- Electromagnetic Compatibility no. 89/336 EEC, modified 92/31 and 93/68 EEC.
- Pressure Equipment Directive No. 97/23/CE.
SUMMARY
1-Generalities ................................................................................... 2
2-Dimensions.................................................................................... 3
3-Installation ..................................................................................... 4
4-Connections................................................................................... 4
5-Options .......................................................................................... 7
6-Starting ........................................................................................ 12
7-Operation of µCHILLER electronic control .................................. 13
8-Maintenance ................................................................................ 19
9-Pressure curves........................................................................... 22
APPLIANCES FILLED WITH R 407 C
R 407 C
•Fluid R 407 C, as opposed to R22, is not a pure fluid but a blend
composed of:
-23% R 32 + 25% R 125 + 52% R 134 A.
•The compressors approved for operation with this fluid are filled
beforehand with polyalcohol oil.
Contrary to mineral oil, it is very hygroscopic: it absorbs the
humidity of the ambient air very quickly. This can modify its
lubricant properties and lead in time to the destruction of the
compressor.
MAINTENANCE INSTRUCTIONS
1-Never add oil to the appliance; the compressor is filled with
polyalcohol oil, a special oil which cannot tolerate the presence
of other oils.
2-The instruments used for:
-filling,
-pressure measurements,
-emptying under vacuum,
-recovering the fluid,
must be compatible and only used for the R 407 C fluid.
3-Theweightoftherefrigerantcontainedin the storagebottlemust
be checked constantly. Do not use it from the moment the
remaining weight is less than 10% of the total weight.
4-In the case of a new charge:
-do not use the charging cylinder,
-use a balance and a dip pipe type R 407 C cylinder,
-chargetheweightofR407Casperthevalueindicatedonthe
unit’s identification plate,
-IMPORTANT: see instruction 3 above.
5-The charge must be undertaken in liquid phase.
6-In case of leakage, do not complete the charge: recover the
remaining refrigerant for recycling and perform a total charge.
Recovery, recycling or the destruction of the fluid must be done
in compliance with the laws in force in the country concerned.
7-If the refrigerant circuit is opened, you must:
-avoid the entry of air into the circuit as much as possible,
-replace the filter drier,
-perform the "vacuum operation" at a minimum level of 0.3
mbar (static).
1 - GENERALITIES
•Theequipment mustbe installed,started-up andmaintained byauthorised andqualified personnel,in accordancewith local
rules and professional standards.
•The recommendations and instructions presented in the manual and on labels must be followed.
1.1 - GENERAL SUPPLY CONDITIONS
•The units must be securely anchored to the truck’s trailer during transport.
•Generally speaking, the material is transported at the consignee’s risk.
•Intheeventofdamages duringtransport,theconsigneemustnotify thecarrierbyregisteredletterwithinthreedays following
delivery.
1.2 - VOLTAGE
•Before carrying out any operation, check that the voltage indicated on the unit corresponds to the mains voltage.
•Before servicing the unit, ensure that the electrical power supply has been shut off and warning signs installed.
1.3 - TECHNICAL AND PHYSICAL CHARACTERISTICS
•See technical data.

3
c
1955 950350
b
x
G
1175 (1425 PMHRV 2072)
450 180
262
1050
262
a
125
180
(1)
654
500
2 - DIMENSIONS
Access to
switch box
Dimensions (in mm) are given
for standard units without
options.
General tolerance ±10 mm.
PMHRV 2044
2050
2064
2072
Condenser air discharge
Condenser air suction
aWater inlet connection
bWater outlet connection
cHP and LP hose entry
Power supply
Power supply
(back-up or antifreeze)
Location of the 4 anti-vibration
pads (optional)
(100 x 100 x 25 mm) under girders
GCentre of gravity
(1)
4 Ø 22.5 mm holes
for sling attachment

4
3 - INSTALLATION
•Priortoallservicingorotheractionsontheequipment,installation,commissioning,operation,ormaintenance,thepersonnel
in charge of these operations shall become familiar with the instructions and recommendations provided in the installation
manual of the unit as well as the elements of the project's technical file.
•The personnel responsible for receiving the unit must conduct a visual inspection in order to identify all damage to which the
unit may have been subjected during transport: refrigerating circuit, electrical cabinet, cassis and cabinet.
3000
300
1000
300
A
C learances to be respected
2 lower side panels
must be removed to
gain access to the 2
screws which secure
the unit to the
wooden base.
•The unit must not be installed near the following:
-sources of heat,
-combustible materials,
-return/air intake of an adjacent building.
•The unit must be installed, started, maintained and repaired
by qualified servicing personnel in compliance with the
requirements of all directives, laws and regulations and in
accordance with standard trade practices.
•During installation, troubleshooting and maintenance
operations, the use of pipes as a step: under the stress, the
pipe may rupture and the refrigerant may cause serious
burns.
•The unit is delivered on a wooden pallet and shrink-wrapped.
•PMERV units are secured to the pallet by two screws for
transport. They can be accessed and extracted by removing
the 2 lower side panels.
•Alift truck may be used to remove the unit from its pallet.
•Handle the unit with care.
•Crane installation: once the plastic film has been removed, the machine may be lifted by placing the hoisting hooks into the
four Ø 22.5 holes.
•Spacers or protective pads should be placed between the slings and body to avoid damage.
•The unit's centre of gravity and weight are indicated on the space requirement diagrams and in the table of the technical
documentation.
•Before installation, verify the following points:
-the unit must be installed outside in an appropriate location and in compliance with environmental requirements (sound
level, integration, etc...),
-the unit’s installation location must be perfectly level and strong enough to support the weight of the unit and must have
adequate inundation protection. Attention: the condensates are not connected to a condensate collector.
-sufficient space around the unit should be provided in order to facilitate servicing and maintenance operations (see
drawing above),
-air suction to the coil and fan discharge must not be obstructed,
-install the unit above the region’s average snowfall level,
-vibrations and noise must not be transmitted to adjacent buildings,
-install the machine on anti-vibration pads and fit hoses on piping elements, as required,
-if necessary, consult an acoustics specialist concerning the unit’s optimum location.
•AVOID:
-excessive exposure to sea-air or corrosive gases,
-the proximity of the extractor fan,
-projections of mud (next to a roadway or path, for example),
-areas where there is strong wind blowing against the unit's air exhaust.
•Protection index of the unit:
-IP 44 : for the electrical equipment,
(IPXXB : for the mechanical hazards).
4 - CONNECTIONS
4.1 - HYDRAULIC CONNECTION
•Connect the water pipes to the corresponding connections:
-PMHRV 2044 to 2072 : male 1"1/2 (40 x 49).
•Connect the hydraulic filter onto the water intake. Also provide 2 isolation valves for intake cleaning purposes.
•The pipes must be at a sufficient distance from the removable panels to enable servicing operations to be performed.
•Make the connection with flexible hoses preferably.
•The diameter of the pipes must be calculated according to the installation (take care with high head losses).
AClearance must be 300 mm.

5
4.2 - ELECTRICAL CONNECTION
4.2.1 - GENERALITIES
•In all cases, refer to the wiring diagrams supplied with the unit or supplied upon request.
•The acceptable voltage variation is: ±10% during operation.
•The electrical connection conduits must be fixed.
•Short circuit current: 10 kA as per IEC 947-2.
•Class 1 unit.
•Use the holes fitted with grommets for passing cables into the unit.
•The electrical installation must comply with the standards and regulations applicable where the unit is being installed (in
particular NFC 15-100 CEI 364).
•The machine is intented for connection to the mains according to existing regulations.
4.2.2 - GENERATOR POWER SUPPLY
•Thepowersupplymustbethree-phase400V/50Hz,intheelectricalbox,onthepowerterminalstrip(seeelectricaldiagrams).
CAUTION:
Beforestarting theunit,ensure thatthe phase rotationorder is correct.The phase-sequence controllerrestricts the
unit from operating if the 3 supply phases are not in order or if a phase is absent.
•The power supply must come from an isolation and electric protection device (not supplied) in accordance with existing
regulations.
•The sizing of the power supply cables is to be ensured by the installer in accordance with the installation conditions and as
per current standards.
Cable sizes, indicated below, are given for information purposes.
They are calculated in accordance with NFC 15-100 ( CEI 364) with the following hypotheses:
-Maximum current, see table below.
-Multi-pole copper cable with PR insulation.
-Installation in non-ventilated cable duct (installation method No. 41). No other power cable.
-Ambient temperature 40°C.
•The lengths indicated below correspond to a voltage drop less than 5% in the cable.
2044
165
39.6
16
100
2050
170
45.8
16
100
2064
185
61.2
16
100
2072
225
70.6
25
150
PMHRV
Starting current A
Max. total current A
Power supply cable section mm2
Max. connection length m
•The complete electrical specifications are given in the table of the technical documentation.
•Note: The power supply of the anti-gel resistance option (or the auxilliary heating option) is to be separately at the time of
installation.
4.2.3 - AUXILLIARY HEATING POWER SUPPLY (optional)
•The power supply (three-phase 400V) is separate from the generator and is connected directly on the power switch
of the heating control unit.
•The power supply must come from an isolation and electric protection device (not supplied) in accordance with existing
regulations.
•The sizing of the power supply cables is to be ensured by
the installer in accordance with the installation conditions
and as per current standards.
Cable sizes, indicated below, are given for information
purposes.
They are calculated in accordance with NFC 15-100 (
CEI 364) with the following hypotheses:
-Maximum current, see table below.
-Multi-pole copper cable with PR insulation.
-Installation in non-ventilated cable duct (installation
method No. 41). No other power cable.
-Ambient temperature 40°C.
Heating power kW
Max. current A
Power supply cable mm2
Max. connection length m
PMHRV 2044 to 2072
48
70
25
150
•The lengths indicated below correspond to a voltage drop less than 5% in the cable.
PMHRV
2044 to 2072
Heating
control
box

6
4.2.4 - SUPPLEMENTARY ELECTRIC HEATING FAULT REPORT (option)
•Forthestandardcontrolversions,apotential-freechangeovercontact(5Aresistive,250VACmax.)isavailableontheheater
control unit’s terminal strip (terminals 14, 15 and 16).
•The toggling of the contact signals that the overheating control has tripped or low voltage on the heater power supply.
4.2.6 - OTHER CONNECTION POSSIBLITIES
•Alarm transfer
Change-over contact, potential free (5A resistive - 250 VAC max.) on the unit terminal strip for remote signalling (common
terminal 36, contact NO 37, contact NF 38).
•Auxiliary electric heating authorization for PMHRV
Itmaybeconnectedtoanotherexteriorpotential-freecontact(notincluded)authorizingtheelectricheatingoperation(contact
closed = heating authorized).
This contact is to be connected to terminals 4 and 5 of the heating unit control box (remove the bridge).
CAUTION: As this signal is 230 VAC, use an adequate contact and cable to make the connection.
4.2.5 - REMOTE CONTROL
A - PMHRV WITHOUT BACK-UP HEATING OPTION
•The unit is factory-wired for heating mode operation.
However,werecommendthatoperatingmodechange-over(heating/cooling)becontrolledbyconnecting2good-quality,
potential-free external contacts (not supplied):
Remote
control "off"
Operating
mode
(❋)
(❋) Jumper to be removed
(❋)
Principle
30
31
33
32
1
6
5
2
Control unit
Operating mode
(❋)
(❋) Jumper to be removed
(❋)
30
31
33
32
Remote control "off"
-1for the remote On/Off signal
-contact closed = operation authorized,
-contact open = off,
-1for change-over of the operating mode
-contact closed = heating mode,
-contact open = cooling mode.
The control unit, supplied with the unit, enables this
function to be performed.
•These contacts are supplied with 24V by the
generator’s control circuit.
•The wiring of these contacts must not be routed near
power cables in order to avoid electromagnetic
disturbances.
•Max. connection cable length: 100 m, 1.5 mm2.
CAUTION:
Mode changes (heating/cooling) are to be
performed with the unit shutdown.
B - PMHRV WITH BACK-UP HEATING OPTION
•The same as stated above, although in this case the command contacts are to be connected to the terminal in
the electric heater’s control box.
Remote
control "off"
Operating mode
Principle
10
11
13
12
1
6
5
2
Control unit
Operating mode
10
11
13
12
Remote control "off"
5
4
(❋) Jumper to be removed
(❋)Electric heating
authorized
(for example: load shed,
outside thermostat…).

7
5 - OPTIONS
5.1 - AUXILLIARY ELECTRIC HEATING OPTION
5.1.1 - PRESENTATION
•The heater consists of immersion heaters each rated of 16 kW (400 V, 3-phase), secured to the hydraulic module's
buffer tank.
•Backup is authorized with the 2nd stage, although is triggered only if the generator is out of service.
•Securities:
-One of the immersion heaters is equipped with a 2-threshold safety thermostat: one automatic reset threshold which is
factory set at 70°C and a manual reset set at 87°C.
-All malfunctions detected by this thermostat results in the shut-down of the electric heating.
-After having turned off (and locked out) the power to the unit and corrected the malfunction, the safety device is reset by
pressing the button located on the body of the thermostat. This thermostat is accessible under the immersion heater’s
head cover.
-This heater is also slaved to the operation of the water circulating pump.
-These immersion heaters are controlled from a specific heating control box (see location in paragraph 4.2.3),
equipped with:
-either a 2-stage electronic controller in standard version (see paragraph 5.1.2),
-or a command module which is controlled directly by the control box (see paragraph 5.1.3).
5.1.2 - OPERATION WITH
STANDARD REGULATION
UNIT
A - PRESENTATION
•The following are located inside the
heating control box:
-thepowerswitchtowhichtheelectric
heating power supply is connected,
-lthe power outgoing feeders,
protected by circuit breakers,
supplying electrical power to the
immersion heaters,
-the 2-stage electronic controller
handlingthe operationof theelectric
heater and controlling the generator
(with its water circulation pump)
according to:
-the On/Off and Heating/Cooling
selection made on the remote
control,
-the system’s water temperature
(installation return) measured by
a probe.
30 31
UN
32 33
12
10 13
34
S1
56
11
R1 R2 GR
Chaud
Heat
Froid
Cool
Mode indicator
(by remote control)
Generator ON
indicator
Electric heater
2nd stage ON
indicator
Electric heater
1st stage ON
indicator
1st stage
command
Generator
command Remote
control
Water temperature probe
(installation return)
2nd stage
command
Pump
command
Regulation
power supply
(230V)
On/Off HEAT/ COOL
PMHRV 2044 to 2072
Back-up - 16 kW
2nd stage - 16 kW
1st stage - 16 kW
Water
outlet
Tank
Water inlet
Security
Code K 60 C 480 M :Standard
Heating power: 24 kW
Current : 35 A

8
•Thepotentiometersusedtosetthevariousthresholdsare
located under the cover of the controller’s front panel.
B - WATER TEMPERATURE PROBES
(heating option)
•CTN type 3 kΩat 25°C.
•Probe defect:
If the temperature value measured is outside of the
measurement range (-20°C to +84°C), the indicator light
of the selected mode begins to flash and the R1 and R2
heating control outputs are disabled.
C - HEATING MODE
•With the remote mode inversion contact being closed
("Heating"indicatorofthecontrolleron),theclosureofthe
remote On/Off contact:
-Activates the pump.
-Activatesthegeneratorinheatingmode,providedthat
the water temperature is greater than the
corresponding adjustable cut-in threshold AJ3.
-Thegenerator"on"indicatorGRthuscomes on.(If the
generator is solicited and the temperature is lower
than the threshold, this indicator flashes).
-Authorizes the auxiliary heating outputs to function in
accordance with the diagram opposite.
•NOTE:
-The cut-in of each of the auxiliary stages is signaled by the indicator light (R1 and R2).
-The cut-in of the 2nd stage is timed at 5 min. (during this time period, the corresponding indicator light flashes).
•The opening of the remote On/Off contact causes the time delayed shutdown of the pump (5 min.) and the immediate
shutdown of the generator and auxiliary stages. The corresponding indicator lights are thus off.
56
7
34
8
10
1
29
36 39
33 42
30 45
14 16
12 18
10 20
29 31
27 33
25 35
DL3 DL4 DL5
DL2DL1
J2
AJ1
appoint
R1
AJ2
offset
R2
AJ3
limite
chaud
AJ4
limite 
froid
Temperature (°C)
-10
0
10
20
25
30
40
50
60
Ohmic value (Ω)
16,600
9,796
5,971
3,748
3,000
2,417
1,598
1,081
747
1 K 1 K
1st stage
2nd stage
AJ1 auxiliary heating set point
Shift AJ 2
Water tempearature
D - COOLING MODE
•With the remote mode inversion contact being open (the controller’s “Cooling” indicator on), the closure of the remote On/
Off contact:
-Activates the pump.
- Activates the generator in cooling mode, provided that the water temperature is less than the cut-in threshold:
-Generator operation is restricted if the water temperature is greater than 35°C.
-Operation is authorized for only 30 minutes if the temperature is greater than the adjustable threshold AJ4. This
time delay is reinitialized if the stop signal is present or if the temperature is greater than 35°C.
-The generator "on" indictor light GR glows steadily if the generator is activated. (If the generator is solicited and the
temperature is greater than the threshold, this indicator flashes).
•The opening of the remote On/Off contact causes the time delayed shutdown of the pump (5 minutes) and the immediate
shutdown of the generator. The generator "on" indicator GR is thus off.
•In this mode, the heating outputs are disabled.
AJ1
Electric heater
1st stage
cut-in
temperature
38°C
AJ2
Electric heater
2nd stage
cut-in
offset
5 K
AJ3
Generator
authorization
threshold
in heating mode
15°C
AJ4
Generator
authorization
threshold
in cooling mode
25°C
Potentiometer
Function
Factory settings

9
5.2 - OTHER OPTIONS
5.2.1 - OPTIONAL BACKUP PUMP OPTION
•Code K 60 L 064 M for PMHRV 2044 to 2072.
•
The switchover of the electrical supply onto the 2
nd
pump is performed manually by a switch box placed near the
pumps .
2
1
3
M5
M4
5.2.2 - 800 W ANTI-FREEZE OPTION
•Code K 60 C 010 M.
•The immersion heater's power supply and control shall be separate from all other installation circuits. It must be installed
by qualified service personnel who are familiar with this type of equipment and in compliance with local regulations and
recognized trade practices.
•Before all operations on the unit, make sure that the power supply is disconnected and locked out.
•The 230 VAC electrical power supply must be fitted with a separate overcurrent protection and disconnect switch in
compliance with the rules and regulations in force.
•The power supply wiring must be secured. Use the cable gland located on the immersion heater cover.
-Note 1: The immersion heater is equipped with an adjustable limiting thermostat set at approximately 5°C.
-Note 2: Power to the immersion heater must be turned on only when the circuit is full of water.
-Note 3: Makesure that wiringis securelyclamped in theterminal blockand thegroundconnection iscorrectly attached.
800W
230V
2 1
PE
Thermostat Cover
Thermostat
-35°C / +35°C
preset at 5°CPhase Neutral
Earth
ATTENTION: The frost protection resistance cannot be installed with the supplementary heating option.
5.2.3 - REMOTE µCHILLER DISPLAY KEYBOARD
•Code K 60 D 037 M.
A - USE
•Enables remote operation of the display keyboard (refer to the module's technical manual).
Note: The display keyboard installed on the unit remains operational.
Main characteristics
•Wall-mounted housing.
•IP 20.
•Operating temperature: 0°C to 50°C
•Storing temperature : -10°C to +60°C
•Humidity (HR) : 90% without condensation.
•Ambient pollution : Normal.
•Max. distance : 150 m.
B - KIT CONTENTS
•1remote control unit with mounting screws.
•1interface board to be installed inside the remote control module.
Note 1: The accessory also includes an interface board connected to the unit's I/O board. This interface board is
factory-installed.
Note 2: µCHILLER controls are factory-set for operation with 2 display keyboards. If one of the display
keyboards is disconnected, the "Cn" message flashes on the other module's display. The µCHILLER setting
maintains control of the machine.

10
C - CONTROL MODULE INSTALLATION
D - ELECTRICAL CONNECTION
Principle
chiller
SEL
x100h
47 1217
12
17 32
917
Ø 20
31115
Dimensions in mm
•Make the hole for the cable link.
•Install the control module base (see location of
mounting holes opposite).
•Connect the cable to the interface board
MCHRET0000 (included in the kit) according to the
wiringdiagraminparagraph4andinstalltheassembly
in the module.
Remote control
Centering pins
Interface board
MCHERT0000
•Slidemicro-switchN°1(remotecontroladdress)tothe
"ON" position.
This micro-switch is located inside the remote control
module.
NOTE: The settings of the micro-switches on the
backoftheunit'sdisplaykeyboardare notto
be changed (position indicated in the
paragraph 7).
•Install the control module onto its base with the
supplied screws and screw covers.
•Start the installation and check that both display
keyboard units operate.
Rear view
Interface board terminal
Micro-switch N°1
☞
keypad
buzzer
to power board
address
0=1 term
1=2 term
SK+ SK- D+ D- GND +24V
on (1) off (0)
4
3
2
1
chiller
SEL
x100h
SK+ SK- D+ D- GND +24V
SK+
SHLD
SK-
D+
D-
GND
+24V
GND
GND GNDGG0 B1 B2 B3 IDCOM ID2 ID4 ID6
ID1 ID3 ID5 ID7
P1 P2 P3 P4 P5
3
2
1
B1 B2 B3 B4 B5
KEY
SERIAL
RES.1 COMP.1 VALVE1 PUMP AMARM
Y1 NO C NO C NO C NC NO C NCNO C
comp
x 100
PRG
mute
SEL
chiller
clear
Interface board µCHILLER I/O
Unit electrical box
Interface board
Remote control
150 m
Local
terminal
Shielding
Connection detail
•Type of cable:
-3twisted pairs, shielded,
-resistance < 80 mOhm/meter.
•Do not route this cable near power cables.
•Use a cable gland and grommet for passing the cable
into the unit.
SK+
SK-
D+
D-
GND
+24V
SK+
SK-
D+
D-
GND
+24V
SHLD
Remote
control Unit
150 m maximum

11
U
P
•See complete details in the module's technical manual.
•Indicator lights:
Heating mode ("Winter")
Cooling mode ("Summer").
Compressor on.
Flashes if the safety relay is activated;
light fixed when compressor is operating.
Hour meter value (multiply by 100).
E - DISPLAY KEYBOARD FUNCTIONS
chiller
SEL
x100h
PRG
mute
clear
x100h
•Keys:
Increase or decrease of parameter codes and their
displayed value.
Access to the parameters (hold 5 seconds).
Returns the display to normal and validates modified
parameters.
Display brightness adjustment.
Alarm sound shut-off.
SEL
PRG
mute
clear
(❋)
(❋) Important information concerning operation of start-up/shut-down keys:
•With the remote control module, settings are factory-set for start-up (and selection of the Cooling/Heating mode for heat
pump units) with the display keyboard keys.
In this case, the remote On/Off and Cooling/Heating inversion digital inputs are deactivated.
For special factory-set parameters (specify when ordering), these digital inputs may be configured to remain active.
In this case, the display keyboard's and keys are inactive.
•For PMHRV units with auxiliary electrical heating, the device can only be controlled by the On/Off digital inputs
and remote Heating/Cooling change over.
In this case, the and keys of the display keyboards are inactive.
5.2.4 - PROPORTIONAL "HEAD PRESSURE" CONTROL KIT
•This function is operational only in "cooling" mode.
•Nécessaire pour une utilisation de l'appareil avec une
température extérieure inférieure à +14°C.
•Based on the information gathered by the specific
pressure sensor(s), the control varies the supply voltage
of the electric fans in accordance with the diagram
opposite.
•Factory-set for optimal operation. For all other settings,
consult us.
Max. voltage
Min. voltage
Condensation pressure
5.2.5 - HP and LP PRESSURE GAUGES
•Code K 60 X 002 M for PMHRV 2044, 2050 and 2064
•Code K 60 X 004 M for PMHRV 2072
•These elements, mounted on the vertical members of the unit's front face, display the high and low pressure values for each
refrigeration circuit.
Reset of alarms and hour meters (hold 5 seconds).
Activation (or deactivation) in Cooling ("Summer") mode (hold five seconds).
Activation (or deactivation) in Heating ("Winter") mode (hold 5 seconds).
If the unit operates in this mode, this mode must be deactivated before activating the other mode.

12
5.7 - VENTILATION WITH AVAILABLE PRESSURE
(for a unit installed in a room)
•Code K 60 Q 002 M
for PMHRV 2044 and 2050
•Code K 60 Q 005 M
for PMHRV 2064 and 2072
•Precautions:
-One conduit per fan.
-Be aware of condensation risks.
•Important:
-Max. available pressure:
-see max. operating limit curves
(for intake grille, duct and outlet grille).
•The installation must comply to regulations
concerning the technical rooms receiving equipment
containing refrigerating fluids.
6 - STARTING
6.1 - CHECK:
•That all hydraulic connections are properly tightened and that the hydraulic system functions correctly:
-purge the circuits,
-position of valves,
-hydraulic pressure.
•That there are no leaks.
•That the machine is stable.
•That the power cables are well fixed to their connection terminals (loose terminals can cause heat build-up on the terminal
board).
•That the electric cables are well insulated from any sections of sheet metal or metal parts which could damage them.
•That electrical wiring is a safe distance from refrigeration lines.
•That probe, control and power cables are properly separated.
•That the machine is earthed.
•That there are neither tools nor other foreign objects in the unit.
•IMPORTANT:
-If antifreeze is added (monopropylene glycol), a minium rate of 15% to 20% is needed to avoid any risk of
corrosion.
-If the installation is equipped with an add-on furnace, make sure that the antifreeze used does not risk to this
boiler.
-Do not use antifreeze in the case of the PMHRV with electric heating.
30 40 50 60 70 80 90
-20
0
20
40
-10
10
30
0
8
12
2
4
6
10
Outdoor
temperature (°C)
Outlet grille
Intake grille
Ø 900
(or equivalent surface area)
(∆p. max. - intake grille pressure drop)
Minimum surface
area for 20 Pa max.
Installation diagram
Reduction in refrigeration
capacity (%)
Increase in power consumption (%)
Power available according to the outside temperature
Increase in power consumption
Reduction in refrigeration capacity
Available pressure (Pa)
Operating limits

13
6.2 - STARTING-UP THE UNIT
•Power up the unit.
•Start the unit (the pump is controlled directly by the generator). See paragraph 7.5.
comp
x 100
PRG
mute
SEL
µchiller
15 2
349
6a
7
8
6b
•See wiring diagrams supplied with the machine.
7 - OPERATION OF µCHILLER ELECTRONIC CONTROL
7.1 - DELIVERY STATE
•The control unit is supplied fitted in the
machine and factory pre-set.
•All the connections are made except those
concerning the available signals or the
options.
7.2 - PRINCIPLE
•The microprocessor controls the operation
of the machine and of the associated
alarms.
It continuously compares the water
temperaturemeasuredbyaprobe(S1)and
the setpoint temperature value entered via
the keyboard.
Each operating request produced by the
control unit is indicated by the light (6a) /
(6b) (see below).
This light flashes if a safety delay is in
progress. It stays on when the compressor
is operating.
•The control probe S1 is located on the
water inlet in the factory.
1Key for:
-Return to normal display/validation of parameters,
-Stopping audible alarm.
2Key for:
-Incrementation of parameters.
3Key for:
-Decrementation of parameters.
4Key for access to parameters.
5LED display.
6a Circuit A compressor on indicator light.
6b Circuit B compressor on indicator light.
7Cooling light ("Summer").
8Heating light ("Winter")
9Compressor operating hours x 100 light.
7.3 - PRESENTATION
7.3.1 - DISPLAY KEYBOARD
6.3 - CHECKS TO BE MADE
•Checkthat therotation directionofthefan(s)and thepump iscorrect. Ifnot,reverse2phases onthe electricalpower supply.
•CheckHPand LPbypassingthepressuretappingpipesthroughthe holeprovided(seepage 3). Also checktheamperages
as per the start-up data sheet.
•Check water flow.
•Check control system operation.
•Water circuit pressure.
NOTE: The hydraulic modules of the PMHRV models
are fitted with a safety pressure switch which
prohibits the water circulation pump, and thus
the unit, from operating should circuit pressure
beinsufficient(cut-off 0.6 bar,engagement 1.4
bar).
•Purge of the hydraulic circuit with special attention given to the pump.
Ø 1/4" blow through
Ø 1/4" draining
DISPLAY
KEYBOARD
µCHILLER
MICROPROCESSOR
CARD
Temperature probe
S2
(for antifrost
protection, circuit A)
Temperature
probe S1
(for control)
Temperature
probe S4
(for antifrost
protection, circuit B)
DIGITAL INPUTS
ACTUATORS
24 VAC
SUPPLY
TRANSFORMER
Temperature
probe S3
(to defrost circuit A)
Temperature probe
S5
(to defrost circuit B)

14
☞
µchiller
address
00 = 1 term.
01 = 2 term.
keypad off
on (0) (1)
13 12 11 10
7.3.3 - MAIN INPUT/OUTPUT BOARD
7.3.4 - CDDITIONAL INPUT / OUTPUT BOARD (for the 2nd refrigerating circuit)
10 Connector for link with controller card.
11 Micro-switch for selection of number of display keyboards
connected:
00 = 1 keyboard (standard setting),
01 = 2 keyboards.
12 Buzzer enable micro-switch ("ON" as standard).
13 Keyboard enable micro-switch ("ON" as standard).
7.3.2-POSITIONSOFTHEMICRO-SWITCHESLOCATEDATTHEBACKOFTHEDISPLAYKEYBOARD
P3
P2
P1
P4
P5
P6
(*)24 VAC supply. Contact open if fault.
DEFROSTING PROBE
ANTI-FREEZE PROBE
CONTROL PROBE
24 V SUPPLY
Fuse 5 x 20
Rating 2A
Relayed
digital
outputs
Ventilation
analog
output
Keyboard link
connector
Green light indicating a correct link with the
displaykeyboard
B
Red light flashing slowly in normal operation, quickly in the
event of an alarm
A
Compressor
Alarm
Pump
Valve
Anti-freeze
Fan
3 2 1
REMOTEHEAT/COOL
REMOTE ON/OFF
WATER FLOW SWITCH
FANTHERMALRELAY
COMPRESSOR THERMAL RELAY
LOW PRESSURE
HIGH PRESSURE
COMMON
Digital
inputs
(*)
Bridge
ID11
ID10
ID9
ID8
B5
GND
B4
GND
P1
NC
C
NO
C
NO
C
NO
Y2
GND
24V
FANTHERMALRELAY
COMPRESSOR THERMAL RELAY
LOW PRESSURE
HIGH PRESSURE
Digital
inputs
(*)
DEFROSTING PROBE
ANTI-FREEZE PROBE
(*)The common comes is provided
from the main board.
Ventilation
analog
output
Relayed
digital
outputs
Compressor
Valve
Anti-freeze
Connector
The following are connected to
this board: B cooling circuit-
related inputs / outputs Jumper

15
7.4 - OPERATING MODES
7.4.1 - COOLING MODE ("SUMMER")
7.3.5 - CTN TYPE TEMPERATURE PROBES Temperature (°C)
-20
-10
0
10
20
25
30
40
50
60
70
Ohmic value (Ohm)
67,740
42,250
27,280
17,960
12,090
10,000
8,310
5,820
4,160
3,020
2,220
7.4.2 - HEATING MODE ("WINTER")
0
1
2nd compressor
1st compressor
Water temperature
Cooling setpoint
Cooling
differential
•The PMHRV sare wired in the factory to operate in heating mode.
•The operating mode (heating/cooling) can be switched remotely by connecting two external contacts (see paragraph 4.2.5
for details):
-1contact for stopping by remote control (contact open = off - contact closed = on),
-1contact to change the mode (contact open = cooling - contact closed = heating).
•Note: An automatic compressor permutation system enables operating time to be shared between the two units.
7.5 - STARTING
•Initial condition:
-Machine hydraulically and electrically connected
ready to operate.
-The remote operating mode selection (Heating/
Cooling) is made.
-The remote On/Off selector is on "Off".
•Turn the installation on.
•The display comes on and shows the water temperature
(read by the control probe S1).
•Place the remote On/Off selector on "On".
•The indicator lamp corresponding to the selected mode
lights up:
-indicator lamp (7) : Cooling,
-indicator lamp (8) : Heating.
•Thecompressor"On"indicatorlights (6a)and(6b)comes
on if necessary (see diagram, paragraph 7.4).
If the light flashes, it means that the compressor starting
is required but that a safety delay is in progress.
This light stays on when the compressor has started.
•To shut down the unit, place the remote On/Off selector on
"Off".
The operating mode indicator lights (7) and (8) and the
compressor operation light (6) go off.
CAUTION
Changing the operating mode (heating/cooling)
must only be done when the machine is stopped.
NOTE
The controller’s anti-short-cycle system requires that the
compressor operate for a minimum time period.
If the machine should shut-down, the compressor(s) may
continue to function for a certain amount of time (maximum
150 seconds).
2nd compressor
1st compressor
Water temperature
Heating setpoint
Cooling
differential

16
7.6 - ADJUSTING AND DISPLAYING THE PARAMETERS
•Parameters accessible by pressing the SEL (4) key for 5 seconds.
•The display displays the code of the 1st parameter on the list ("r1" - see below).
•Bypressingthe ▲ (2) or ▼(3) keys,scrollthroughthe parametercodesuntilyoureach
the one you want.
•Press SEL (4)to find out the value of the corresponding parameter.
•The value of the parameter can if necessary be changed using the ▲(2) and ▼(3)
keys.
•Press SEL (4) to re-display the parameter codes.
•To store the parameters which have been changed and to exit the adjustment
procedure, press the PRG (1) key.
If during the adjustment procedure no key is pressed for 60 seconds (this period is
indicated by the display flashing), the system automatically reverts to normal operation
PRG
mute
SEL
µ
chiller
5 sec
and display without storing the latest parameter changes.
Code Parameters Remarks
Factory
setting Installation setting Adjustment
range
12 °C
2 K
45°C
5 K
-
-
-
-
-
-
-
-
10 to 25°C
0.1 to 11 K
25 to 45/50°C
0.1 to 11 K
-
-
-
-
-
-
-
Probe located on water
return
Probe located on water
return
Display only
Set point
Cooling («Summer»)
Differential
Cooling
Set point
Heating («Winter»)
Differential
Heating
Water exchanger temperature, circuitA
(Probe S2 for anti-freeze)
Water exchanger temperature, circuit B
(Probe S4 for anti-freeze)
Air exchanger temperature, circuit A
(Probe S3 defrosting)
Air exchanger temperature, circuit B
(Probe S5 defrosting)
Compressor hour meter, circuit A
Compressor hour meter, circuit B
Pump hour meter
r 1
r 2
r 3
r 4
r 6
r 7
r 8
r 9
c 9
c A
c C
•The hour meters are zeroed by pressing simultaneously
on the ▲(2) and ▼(3) keys.
NOTE:
•The configuration and settings of each machine is
factory-set for optimal operation.
•Parameterscanbeadaptedtosuitspecialinstallationson
request.
Consult us.
comp
x 100
PRG
mute
SEL
µchiller
If light (9) is on, multiply
the time displayed by 100. RESET
7.7 - ALARMS
•When an alarm occurs:
-the bell rings (for 1 minute),
-the alarm report is activated (make-break dry contact 5 A resistive 250 VAC max.),
PRG
mute
PRG
mute
SEL
µ
chiller
-the display flashes and the alarm message appears cyclically (see table below),
-the machine stops if necessary (see table below).
•Stop the bell by pressing the key (1) .
•Remedy the fault.
IMPORTANT NOTE:
Any work must be done by qualified, experienced person.
•The alarm is cancelled automatically when the fault is cleared.

17
PRG
mute
SEL
µchiller
RESET
NOTE:
-(*) Factory settings.
-(**) Cancellation of the fault on the motor circuit breaker.
-The alarms are not activated when the machine is off (except for probe and memory faults).
WATER OUTPUT ALARM CASE
•Resetthe"water output"alarmmanuallyby simultaneouslypressingthe ▲(2)and
▼(3) keys if the circulation pump control is used.
•At that moment:
-the alarm report is de-activated,
-the display reverts to normal (no flashing),
-the machine can re-start (if it was stopped).
SUMMARY TABLE OF ALARMS
Inhibition
delay
(*)
Threshold
(*)
Circuit
A
stop
Pump
stop
Cancellation Report Remarks
Alarm Message Circuit
B
stop
Fault on probe 1
Fault on probe 2
(circuit A)
Fault on probe 3
(circuit A)
Fault on probe 4
(circuit B)
Fault on probe 5
(circuit B)
Water flow rate
Circuit A H.P.
Circuit A L.P.
Circuit A water heat
exchanger frozen
Compressor A
maintenance
Circuit A
thermal compressor
Circuit A thermal fan
Defrosting too long
circuit A
Circuit B H.P.
Circuit B L.P.
Circuit B water heat
exchanger frozen
Compressor B
maintenance
Circuit B
thermal compressor
Circuit B thermal fan
Defrosting too long
circuit B
Memory error
Display link fault
Supply voltage
too low
E1
E2
E3
E4
E5
FL
H1
L1
A1
n1
C1
F1
r1
H2
L2
A2
n2
C2
F2
r2
EE
Cn
EA
---
---
---
---
---
30" on start-up
10" in operation
---
150" on start-up
---
---
---
---
---
---
150" au dém.
---
---
---
---
---
---
---
---
---
---
---
---
---
---
Pressure switch
Pressure switch
-1°C
10 000 h
Circuit breaker
Circuit breaker
10 mn
Pressostat
Pressostat
-1°C
10 000 h
Circuit breaker
Circuit breaker
10 mn
---
---
---
Auto
Auto
Auto
Auto
Auto
Manual
Auto
Auto
Auto
Manual
Manual
(**)
Manual
(**)
Auto
Auto
Auto
Auto
Manual
Manual
(**)
Manual
(**)
Auto
According to
seriousness
of fault
According to
seriousness
of fault
According to
seriousness
of fault
X
X
X
X
X
X
X
X
X
---
X
X
---
---
---
---
---
---
---
---
According to
seriousness
of fault
According to
seriousness
of fault
According to
seriousness
of fault
X
X
X
X
X
X
---
---
---
---
---
---
---
X
X
X
---
X
X
---
According to
seriousness
of fault
According to
seriousness
of fault
According to
seriousness
of fault
X
X
X
X
X
X
X
X
X
---
X
X
---
X
X
X
---
X
X
---
---
---
---
Alarm enabled
if pump running
Fan time delay
stopped 1'
Alarm together with
phase-sequence
fault
Self-cancellation
with correct
defrosting cycle
Fan time delay
stopped 1'
Alarm together with
phase-sequence
fault
Self-cancellation
with correct
defrosting cycle
After-salesdepartment
operation to renew
parameters or change
the electronics
After-sales
department
operation
After-sales
department
operation
---
---
---
---
---
X
---
---
---
---
---
---
---
---
---
---
---
---
---
---
According to
seriousness
of fault
According to
seriousness
of fault
According to
seriousness
of fault

18
7.8 - SPECIAL OPERATING FEATURES
7.8.1 - ANTI-FREEZE PROTECTION OF WATER HEAT EXCHANGER
•2functions performed:
- control of a antifreeze heater,
- anti-freeze alarm stopping the machine.
•Operating diagram (see opposite).
The setting of these thresholds can be changed in the
factory on request to suit the machine’s operating
conditions.
7.8.2 - CIRCULATION PUMP CONTROL
•The pump is controlled as soon as the machine is started up.
•Thepump stopswhen themachineis stopped(by remotecontrol stopcontact) afteratime delayof 5minutes (thetimedelay
is active if the compressor has been running).
•NOTE:
-This signal is used directly on the PMHRV without electric heating to control pump of the hydraulic module.
-
For the models with electric heating, pump control is made by the control module placed in the electric heating box
(see paragraph 5).
7.8.3 - POWER CUT
•If the power is cut to the control circuits, the electronic control unit returns to the operating mode it was in before the power
was cut and the parameters are still stored in memory when the power is restored.
7.8.4 - FAN SPEEDS
•Supplied as standard, a thermostat (index B1) monitoring the ambient temperature enables the speed to be adapted in
relation to this temperature.
•The thermostat is factory-set for optimal operation. For other settings, consult us.
•This device is not installed if a proportional pressure control device is used.
7.8.5 - REMOTE "µCHILLER" DISPLAY KEYBOARD (optional)
•Enables transfer of display keyboard functions up to 150 m.
•See details in paragraph 5.2.3.
IMPORTANT NOTES:
•With this accessory, the µCHILLER control is factory-configured for startup using the specific cooling or heating
keys on the display keypad. In this case, the digital On/Off and Remote Heating/Cooling Inversion inputs are
Inactive.
•By special factory-set parameters (specify when ordering), these digital inputs may remain active. In this case, the cooling
and heating keys on the display keypad are inactive.
•For a PMHRV with auxiliary electric heating, start-up is made only by the remote On/Off and Heating/Cooling
inversion signals and not by the display keypad.
7.8.6 - DEFROSTING (In heating mode only)
•The control is regulated to operate as follows:
-Ifthe temperaturedetectedbythesensor S3or S5isless thana giventemperature(foratleast 10seconds), adefrosting
operation is triggered (inversion of the refrigeration cycle and shut-down of the ventilation) unit the temperature read by
S3 or S5 returns to a sufficient level.
However, the duration of a de-icing phase is limited to 10 minutes. If de-icing is stopped by this time delay, alarm "r1" or
"r2" appears on the display.
-Aperiod of 40 minutes must pass before a new de-icing phase can start.
-The defrosting temperature levels are given in the commissioning documentation.
-For special operating conditions, it may be necessary to change these settings. In this case, contact the after sales
service.
•NOTE:
-Message "d1" appears on the display during the defrosting phase.
-For units with 2 refrigerating circuits, defrosting is carried out independently on each of the circuits. An inhibition delay
(10 min.) enables defrosting of the 2nd circuit to be delayed.
7.8.7 - CYCLE INVERSION VALVE
•The valve is actuated in heating mode.
2¡C1¡C-1¡C 0¡C 3¡C 4¡C
0
1
10
0
Freeze alarm
Resistor control

19
8 - MAINTENANCE
8.1 - PERIODIC CHECKS
•Carry out the following operations at least once a year
(the frequency depends on the installation and operating conditions):
IMPORTANT
Before carrying out any work on the machine, make sure that it is switched off and that access to it is prevented.
Any work must be carried out by personnel qualified and authorised to work on this type of machine.
GENERAL MAINTENANCE:
All equipment must be properly maintained in order to provide optimum performance over time. Faulty maintenance can result in
thecancellation ofthe productguaranty.Depending onthe products,maintenance operationsconsistin thecleaning offilters (air,
water), internal and external exchangers, casings, and the cleaning and protection of condensate tanks. Treating odours and the
disinfection of room surfaces and volumes also contributes to the cleanliness of the air breathed by users.
TECHNIBELproposesawiderangeofperfectlyadaptedprofessionalcleaning,maintenanceandrepairproductsforcompleteand
efficient maintenance. For an optimum result, TECHNIBEL air-conditioners must be maintained with TECHNIBEL maintenance
products.
-Cleaning the air exchanger.
-Checking the wear parts.
-Checking the operating set points and temperatures.
-Check the refrigerant circuit in accordance with the
regulations in force.
-Checking the safety devices.
-De-dusting the electrical equipment cabinet.
-Checking that the electrical connections are secure.
-Checking the earth connection.
-Check for leaks.
-Check the operation and parameters as per the start-up
data sheet.
-Check the hydraulic circuit in accordance with standard
trade practices (output, pressure, purge the circuit and
particularlythepump–seeparagraph6.3,filtercleaning).
-For models equipped with a hydraulic module, check that
the safety valve operates correctly.
8.2 - REFRIGERANT CIRCUIT RECOMMENDATIONS
•Anew filter dryer must be installed after all servicing operations performed on the refrigerant circuit.
8.2.1 - INSTALLATION AND MAINTENANCE
•Prior to all servicing or other actions on the equipment, installation, commissioning, operation, or maintenance, the
personnelincharge oftheseoperationsshallbecomefamiliarwith theinstructionsandrecommendations providedinthe
installation manual of the unit as well as the elements of the project's technical file.
•The unit must be installed, started, maintained and repaired by qualified servicing personnel in compliance with the
requirements of all directives, laws and regulations and in accordance with standard trade practices.
•During installation, troubleshooting and maintenance operations, the use of pipes as a step: under the stress, the pipe
may rupture and the refrigerant may cause serious burns.
•During unit maintenance operations, the composition and the condition of the coolant will be checked, as well as the
absence of all trace of refrigerant.
•During the unit's annual seal test, in accordance with the law, check that the high and low-pressure pressure controllers
are correctly connected on the refrigerating circuit and that they disconnect the electrical circuit in case of tripping.
•During maintenance operations, make sure that there is no trace of corrosion or oil stains around the refrigerating
components.
•Priortoallmaintenanceandservicingontherefrigeratingcircuit,onemustfirst shutdownthe unitthenwait afewminutes
before installing temperature or pressure sensors. Certain equipment, such as the compressor and piping, may reach
temperatures above 100°C and high pressures may lead to serious burns.
8.2.2 - TROUBLESHOOTING
•Allmaintenanceandservicingoperationsontherefrigeratingcircuitmustbeconductedinaccordancewithstandardtrade
practices and safety rules: recovery of the refrigerant, inert shielded (nitrogen) brazing, etc.
•All brazing operations must be conducted by qualified welders.
•For equipment charged with R407C, refer to the specific instructions in the installation manual.
•Thisunit is equippedwith pressurized equipment,for examplepiping.Use onlygenuine parts listedin the spareparts list
for replacing defective refrigeration components.
•Pipes may only be replaced by copper tubing in compliance with standard NF EN 12735-1.
•Leak detection, in the case of pressure testing:
-Never use oxygen or dry air, as the risk of fire or explosion is present
-Use dehydrated nitrogen or a nitrogen and refrigerant mix indicated on the manufacturer's plate
-The test pressure, low and high pressure, must not exceed 20 bar and 15 bar in the case where the unit is equipped
with the pressure gauge option.
•All part replacement with other than genuine parts, all modifications of the refrigerating circuit, all replacement of
refrigerant by a fluid other than that indicated on the manufacturer's plate, all use of the unit outside the application limits
defined in the documentation, shall result in the cancellation of PED CE marking compliance which shall fall under the
liability of the individual who carried out these modifications.

20
START-UP DATA SHEET
PMHRV µCHILLER PARAMETER SETTINGS
Code: Standard application
Serial Number:
Started by: Company: Site: Date:
Code Description Unit Factory Setting
value
/SENSOR
6Sensor S1 calibration °C0
7Sensor S2 calibration °C0
8Sensor S3 calibration °C0
9Sensor S4 calibration °C0
aSensor S5 calibration °C0
bDigital filter 2
CWater inlet limit 12
dUnit of measure (0=°C / 1=°F) 0
START-UP DATA SHEET
PMHRV Range PMHRV 2044 to 2072
Code :
Serial Number:
Started by: Company: Site: Date:
Voltage measured on unit VL1-L2 L2-L3 L3-L1
FANS
Measured amperage, circuit A A/phase L1 L2 L3
Circuit breaker thermal setting A
Measured amperage, circuit B A/phase L1 L2 L3
Circuit breaker thermal setting A
COMPRESSORS
Measured amperage, circuit A A/phase L1 L2 L3
Circuit breaker thermal setting A
Measured amperage, circuit B A/phase L1 L2 L3
Circuit breaker thermal setting A
PUMP
Amperage A/phase L1 L2 L3
Circuit breaker thermal setting A
HEAD PRESSURE CONTROL
Setting
SENSORS (see control sheet)
Outdoor temperature
Outdoor thermostat set point
Water temperature control sensor positioned in: Inlet Outlet
TEMPERATURES (°C) / PRESSURES (bar)
Outside temperature
Water type Pure Glycol % Glycol
Water inlet, generator
Water outlet, generator
Water circuit pressure
Water flow rate
∆T : Circuit A Circuit B
Suction, compressor
Discharge, compressor
Inlet, thermostatic expansion valve
Outlet, thermostatic expansion valve
Condensing pressure
Evaporating pressure
Superheating = (Compressor suction temperature - Evaporating temperature) = 7 to 8°C
Sub-cooling = (Condensating temperature - Expansion valve inlet temperature) = 3 to 5°C