System air SYSHRW 096 Manual

Water source heat pump
Installation and maintenance manual
22.0 â30.0kW
27.0 â38.1kW
096 / 120
SYSHRW

INSTALLATION INSTRUCTION
NOTICE D’INSTALLATION
INSTALLATIONSHANDBUCH
ISTRUZIONI INSTALLAZIONE
INSTRUCCIONES DE INSTALACIÓN
English
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English
2SysHrw
CONTENTS
1. GENERAL RECOMMENDATIONS........................................................................................................................................................ 3
1.1. SAFETY DIRECTIONS .......................................................................................................................................................................................................................3
1.2. WARNING.........................................................................................................................................................................................................................................3
2. INSPECTION AND STORAGE .............................................................................................................................................................. 4
3. GENERALITIES .................................................................................................................................................................................. 4
4. CONTENTS OF PARCEL ...................................................................................................................................................................... 4
5. DIMENSIONS .................................................................................................................................................................................... 5
6. HANDLING........................................................................................................................................................................................ 5
6.1. NET WEIGHT.....................................................................................................................................................................................................................................5
7. REFRIGERATION SPECIFICATIONS..................................................................................................................................................... 6
7.1.1. REFRIGERANT CHARGE..............................................................................................................................................................................................................................................6
7.1.2. FLUOROCARBON GAS REGULATIONS......................................................................................................................................................................................................................6
8. TECHNICAL SPECIFICATIONS ............................................................................................................................................................. 7
8.1. OPERATING LIMITS..........................................................................................................................................................................................................................7
8.1.1. ENVIRONMENT...........................................................................................................................................................................................................................................................7
8.1.2. TEMPERATURE LIMITS ...............................................................................................................................................................................................................................................7
8.1.3. FLOW LIMITS...............................................................................................................................................................................................................................................................7
9. ELECTRIC SPECIFICATIONS ................................................................................................................................................................ 8
9.1. ELECTRICAL POWER SUPPLY .........................................................................................................................................................................................................8
10. INSTALLATION................................................................................................................................................................................ 8
10.1. UNIT LOCATION.............................................................................................................................................................................................................................8
11. DUCTING AND NOISE LEVEL REDUCTION ........................................................................................................................................ 9
11.1. CONNECTION FRAME DIMENSIONS.........................................................................................................................................................................................10
11.1.1. AIR BLOWING FRAME........................................................................................................................................................................................................................................... 10
11.1.2. RETURN AIR INTAKE FRAME ............................................................................................................................................................................................................................... 10
11.2. MODIFYING THE AIR BLOWING DIRECTION ............................................................................................................................................................................11
11.3. FILTER ACCESS.............................................................................................................................................................................................................................11
11.4. VENTILATION ...............................................................................................................................................................................................................................11
11.5. AERAULIC ADJUSTMENT.............................................................................................................................................................................................................11
11.5.1. MODEL SYSHRW096............................................................................................................................................................................................................................................ 11
11.5.2. MODEL SYSHRW120............................................................................................................................................................................................................................................ 12
12. HYDRAULIC CONNECTIONS........................................................................................................................................................... 12
12.1. RECOMMENDATIONS FOR HYDRAULIC CONNECTIONS ........................................................................................................................................................12
12.2. RECOMMENDATIONS FOR CLEANING AND FLUSHING OUT THE SYSTEM..........................................................................................................................13
12.3. PROTECTION AGAINST FREEZING.............................................................................................................................................................................................14
12.4. WATER QUALITY..........................................................................................................................................................................................................................15
13. WIRING DIAGRAM AND LEGEND.................................................................................................................................................. 16
13.1. WIRING DIAGRAM ......................................................................................................................................................................................................................16
13.2. LEGEND ........................................................................................................................................................................................................................................16
13.2.1. POWER SUPPLY..................................................................................................................................................................................................................................................... 16
13.2.2. DESCRIPTION OF WIRING DIAGRAM REFERENCES .......................................................................................................................................................................................... 16
13.2.3. PRESSOSTATS SETTINGS ...................................................................................................................................................................................................................................... 17
13.2.4. COLOUR CODE ....................................................................................................................................................................................................................................................... 17
13.2.5. SETTING OF THERMAL PROTECTION AND FUSES............................................................................................................................................................................................. 18
14. ELECTRICAL CONNECTIONS........................................................................................................................................................... 18
14.1. GENERALITIES..............................................................................................................................................................................................................................18
15. RCL AND µBMS CONTROL MODULES WIRING............................................................................................................................... 19
15.1. RCL................................................................................................................................................................................................................................................19
15.2. µBMS ............................................................................................................................................................................................................................................21
15.3. APPLIANCE CONFIGURATION....................................................................................................................................................................................................22
15.3.1. FACTORY CONFIGURATION.................................................................................................................................................................................................................................. 22
15.3.2. CLIENT SETTINGS .................................................................................................................................................................................................................................................. 22
15.4. RETURN AIR TEMPERATURE MEASUREMENT.........................................................................................................................................................................23
15.5. POWER FAILURE..........................................................................................................................................................................................................................23
15.6. REMOTE ON/OFF MAKE/BREAK SWITCH................................................................................................................................................................................23
15.7. RCL ONLY.....................................................................................................................................................................................................................................24
15.8. µBMS SUPERVISION MODULE...................................................................................................................................................................................................24
15.9. MODBUS.......................................................................................................................................................................................................................................25
15.10. ADDRESSING PROCEDURE.......................................................................................................................................................................................................26
15.11. µBMS SUPERVISION MODULE ................................................................................................................................................................................................27
15.12. MOTORISED WATER VALVE .....................................................................................................................................................................................................27
16. FINAL TASKS ................................................................................................................................................................................ 28
17. STARTING - RECOMMENDATIONS - SETTINGS.............................................................................................................................. 28
17.1. COMMISSIONING ........................................................................................................................................................................................................................29
17.2. DEMAND FOR COOLING.............................................................................................................................................................................................................29
17.3. DEMAND FOR HEATING.............................................................................................................................................................................................................29
18. MAINTENANCE AND SERVICING................................................................................................................................................... 30
18.1. FAN DRIVE SYSTEMS..................................................................................................................................................................................................................30
18.2. FAULT FINDING............................................................................................................................................................................................................................30
18.2.1. NEITHER THE FAN NOR THE COMPRESSOR OPERATE ..................................................................................................................................................................................... 30
18.2.2. VENTILATION (FAN) MODE OPERATES BUT THE COMPRESSOR DOES NOT OPERATE .............................................................................................................................. 31
18.2.3. INSUFFICIENT COOLING OR HEATING PRODUCTION........................................................................................................................................................................................ 31
18.2.4. INSUFFICIENT WATER FLOW AT THE LEVEL OF THE PLATE EXCHANGER. ..................................................................................................................................................... 31
18.2.5. APPEARANCE OF WATER DROPLETS IN THE APPLIANCE................................................................................................................................................................................ 31
18.2.6. APPEARANCE OF ABNORMAL NOISES AND VIBRATIONS IN THE CASING................................................................................................................................................... 31
18.3. ALARM CODES.............................................................................................................................................................................................................................32
18.3.1. GENERAL CODES................................................................................................................................................................................................................................................... 32
18.3.2. COOLING MODE..................................................................................................................................................................................................................................................... 32
18.3.3. HEATING MODE..................................................................................................................................................................................................................................................... 33
19. IN-WARRANTY RETURN MATERIAL PROCEDURE ......................................................................................................................... 34
20. SERVICE AND SPARE PARTS ORDER............................................................................................................................................. 34

English
3SysHrw
IT IS MANDATORY TO
CUTOFF POWER SUPPLY
BEFORE STARTING TO
WORK IN THE ELECTRIC
CASING BOXES
1. GENERAL RECOMMENDATIONS
Please read the following safety precautions very carefully before installing the unit.
1.1. SAFETY DIRECTIONS
Follow the safety rules in forces when you are working on your appliance.
The installation, commissioning and maintenance of these units should be performed by qualied personnel
having a good knowledge of standards and local regulations, as well as experience of this type of equipment.
The unit should be handled using lifting and handling equipment appropriate to the unit's size and weight.
Any wiring produced on site must comply with the corresponding national electrical regulations.
Make sure that the power supply and its frequency are adapted to the required electric current of operation,
taking into account specic conditions of the location and the current required for any other appliance
connected with the same circuit.
The unit must be EARTHED to avoid any risks caused by insulation defects.
It is forbidden to start any work on the electrical components if water or high humidity is present on the
installation site.
1.2. WARNING
Cutoff power supply before starting to work on the appliance.
When making the hydraulic connections, ensure that no impurities are introduced into the pipe work.
The manufacturer declines any responsibility and the warrantly becomes void if these instructions are
not respected.
If you meet a problem, please call the Technical Department of your area.
If possible, assemble the mandatory or optional accessories before placing the appliance on its nal location.
(see instructions provided with each accessory).
In order to become fully familiar with the appliance, we suggest to read also our Technical Instructions.
The information contained in these Instructions are subject to modication without advance notice.

English
4SysHrw
2. INSPECTION AND STORAGE
At the time of receiving the equipment carefully cross check all the elements against the shipping documents
in order to ensure that all the crates and boxes have been received. Inspect all the units for any visible or
hidden damage.
In the event of shipping damage, write precise details of the damage on the shipper’s delivery note and
send immediately a registered letter to the shipper within 48 hours, clearly stating the damage caused.
Forward a copy of this letter to the manufacturer or their representative.
Never store or transport the unit upside down. It must be stored indoors, completely protected from
rain, snow etc. The unit must not be damaged by changes in the weather (high and low temperatures).
Excessively high temperatures (above 60 °C) can harm certain plastic materials and cause permanent
damage. Moreover, the performance of certain electrical or electronic components can be impaired.
3. GENERALITIES
Package contents:
1 appliance
1 RCL control module
1 installation manual
1. To avoid any damage, this equipment must not be used to supply heating or cooling during building
work.
2. Check that the voltage, the number of phases and the capacity of the unit comply with the
installation plans.
3. Check the size of the unit in relation to the plans to ensure that the unit will be installed in the right
location.
4. After having removed the packing box, take out the suspension kit that is to be found inside the fan
outlet frame.
5. Before installing the unit, check its height in relation to the available free ceiling height.
6. Take particular care over the location and routing of the water pipes and the condensate drainage
pipe as well as the electrical wiring. The location and routing of these items must be clearly indicated
on the plans.
7. It is always advisable for the heat pump installer to consult with all the various entrepreneurs
responsible for the pipe work, partitioning, ceiling and electrical installation on the site.
8. If necessary, change the direction of the airow outlet from the front to the side of the appliance, or
vice versa, prior to installing the unit in the ceiling. Refer to the instructions detailed in the section «
AIRFLOW OUTLET MODIFICATION».
9. We advise the installer to cover the appliances with a plastic sheet to protect it during the nal
building work.
This is particularly important if work such as spraying the joists with re retardant, sanding, spray
painting and plastering has not been completed.
In the absence of a plastic sheet, the packing box can be modied to cover the machines during the
building work.
4. CONTENTS OF PARCEL

English
180
88.5
479
90
286
170
98
1" 1/4 MALE GAS
WATER OUTLET
MAIN CIRCUIT BREAKER
(OPTION)
ELECTRICAL CONNECTIONS
CONDENSATES OUTLET
Ø 7/8 (22.2mm)
1" 1/4 MALE GAS
WATER INLET
955
770
1680
5SysHrw
5. DIMENSIONS
6. HANDLING
6.1. NET WEIGHT
The appliance may be handled with a pallet truck or a forklift truck.
096 120
Weigth (kg) 253 262

English
This equipment contains uorinated gas with greenhouse gas effects covered by the Kyoto
agreement.
Caution
SYSHRW units use the R407C uoro-carbonated uid, belonging to group 2 as dened in directive
2014/68/UE. Considering the maximum operating pressure of these units (42 bar g), they integrate
category 2 (or lower) components as dened in directive 2014/68/UE.
Caution
Non-compliance with one of these obligations constitutes an offense and can result in nancial
penalties.
Furthermore, compliance of the equipment with the uorinated gases regulation must be proven to
the insurance company.
Caution
6SysHrw
7. REFRIGERATION SPECIFICATIONS
7.1.1. REFRIGERANT CHARGE
The type and quantity of refrigerating uid per circuit are indicated on the product plate.
The installer and end user will get informed on local environmental regulations for the installation, operation
and disposal of the equipment ; more particularly, for the collection of substances hazardous for the
environment (refrigerating uid, oil, antifreeze, etc.). A refrigerating uid, whatever it is, must not be vented.
Refrigerating uids must be handled by skilled personnel.
7.1.2. FLUOROCARBON GAS REGULATIONS
The EC No. 517/2014 regulation covering uorinated greenhouse gases requires of refrigeration equipment
operators to comply with the following ve obligations:
Greenhouse gas quantity (kg of CO2) = Quantity of gas (kg) x gas' GWP
Quantity of greenhouse gas expressed in weight
(kg) and CO2 equivalent
Quantity of gas: amount of gas contained in the
machine in kg (see ID plate)
GWP (GlobalWarming Potential) of the gas contained
in the machine (see ID plate)
²GWP for the R410A = 2088
²GWP for the R407C = 1774
7.1.2.1. CALCULATING GREENHOUSE GAS QUANTITIES
1. Installation, servicing, maintenance as well as checking the sealing must be carried out by qualied
personnel.
2. The uorinated gas must be recovered during servicing and maintenance as well as the end of the
installation.
3. All the necessary measures must be taken to prevent the leakage of uorinated gases and any leaks
must be repaired as rapidly as possible.
4. Regular checks on any leaks must be performed according to the following conditions:
for equipment containing uorinated greenhouse gases in quantities greater than or equal to
the equivalent of 5 tonnes of CO2but less than the equivalent of 50 tonnes of CO2:
at least every twelve months or, if a leak detection system is installed, at least every twenty-
four months
for equipment containing uorinated greenhouse gases in quantities greater than or equal to
the equivalent of 50 tonnes of CO2but less than the equivalent of 500 tonnes of CO2:
at least every six months or, if a leak detection system is installed, at least every twelve
months
for equipment containing uorinated greenhouse gases in quantities greater than or equal to
the equivalent of 500 tonnes of CO2:
at least every three months or, if a leak detection system is installed, at least every six
months.
5. A document grouping a description of all the operations carried out on the cooling circuit must be
drafted and conserved.

English
Nominal air ow : 4700 m3/h Nominal water ow : 4860 l/h
2800
3000
3200
3400
3600
3800
4000
4200
4400
4600
14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33
39
34 35 36 37 38
Air inlet temperature (°C)
Air flow (m3/h)
2200
2400
2600
2800
3000
3200
3400
3600
3800
4000
4200
4400
4600
4800
12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 4842 44 46
Water inlet temperature (°C)
Water flow (l/h)
Nominal air ow : 5600 m3/h Nominal water ow : 6408 l/h
3400
3600
3800
4000
4200
4400
4600
4800
5000
5200
5400
5600
14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33
39
34 35 36 37 38
Air inlet temperature (°C)
Air flow (m3/h)
3000
3200
3400
3600
3800
4000
4200
4400
4600
4800
5000
5200
5400
5600
5800
6000
6200
6400
12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 4842 44 46
Water inlet temperature (°C)
Water flow (l/h)
7SysHrw
DB: dry bulb WB:
bulbe humide
* Conditions in
accordance with the
standard:
EN 14511-2
8. TECHNICAL SPECIFICATIONS
8.1. OPERATING LIMITS
8.1.1. ENVIRONMENT
This equipment is designed EXCLUSIVELY for INDOOR installation.
In general, sheltered locations such as garages, roof space, etc, do not provide sufcient protection against
extreme temperatures and/or humidity and may be harmful to the unit’s performance, reliability and service
life.
8.1.2. TEMPERATURE LIMITS
8.1.3. FLOW LIMITS
Cooling Heating
Air inlet
temperature
Minimum 21 °C DB / 15 °C WB 15 °C
Normal * 27 °C DB / 19 °C WB 20 °C
Maximum 38 °C DB / 28 °C WB 25 °C
Water inlet
temperature
Minimum 20 °C 13 °C
Normal * 30 °C 20 °C
Maximum 48 °C 34 °C
8.1.3.1. MODEL SYSHRW096
8.1.3.2. MODEL SYSHRW120

English
600 mm
200 mm
600 mm 600 mm
600 mm
1026
1640
8SysHrw
9. ELECTRIC SPECIFICATIONS
9.1. ELECTRICAL POWER SUPPLY
A variance of ±10% is acceptable in relation to the operating voltage marked on the appliance’s Maker’s
Plate. Phase imbalance on three phase units must not exceed 2%.
Operating voltages :
²400V / 3ph / 50Hz + N (360 Volts mini ; 440 Volts maxi.)
Comments: the stated voltages represent the accepted range. However, certain components may be subject
to premature wear on appliances operating continuously, for extensive periods, on abnormally low or high
voltages.
10. INSTALLATION
10.1. UNIT LOCATION
1. Install the unit in a location allowing easy removal of the lter and the access panels to the electrical
box/compressor and fan by leaving sufcient free space for servicing personnel to perform
maintenance and repairs. Leave sufcient space for the water, electricity and duct connections.
2. The installer must ensure that access under the
suspended ceiling is provided, and that sufcient
space is provided for the suspension angle brackets,
the duct attachment collars and the water and
electrical connections.
3. Provide space under the unit for a siphon on the
condensates drainage pipe. Do not install the unit on
top of pipe work.
4. Each unit is suspended from the ceiling on four
threaded rods.
Warning! Do not use rods of a diameter smaller
than M10. The rods must be solidly anchored to the
ceiling and to the ceiling joists.
5. Arrange the threaded rods in accordance with
the dimensions stated below. The use of nuts
and locknuts is recommended for attaching the
suspension rods to the unit as the unit’s vibrations
may loosen a single nut. The installer is liable for any
damage in the event of this recommendation not
being followed.
6. To facilitate drainage, the unit must be angled in
both planes towards the condensates drainage pipe.

English
Internal cladding on both sides
with glass fibre sound insulation
Adapter part Alignment elbow
Main duct
Spur with internal glass fibre
sound insulation cladding
Air distributor:
60 x 60 cm (example)
Canvas
connection
Heat pump
9SysHrw
11. DUCTING AND NOISE LEVEL REDUCTION
Water circuit heat pumps are usually installed in conjunction with an air blowing duct. A return air duct may
also be required. All ductwork shall be compliant with best air conditioning engineering practices.
The air blowing duct system normally consists of a exible connector mounted on the unit, a bridging section
to link to the size of the main duct, a short section of straight duct, an elbow without a damper and a main
duct with spurs equipped with distribution grilles as illustrated in the drawing below. The sum total of the
bridging section angles must not be higher than 30°, otherwise there will be signicant performance losses.
Do not connect the main duct directly to the unit without a bridging section to reduce the duct size to that of
the unit’s connection collar. In the event of using metal ducts, only the sides of the elbow section and all the
spur duct sections should be covered with breglass sound insulation for reducing the noise level. Fibreglass
duct panels are more sound absorbent and may enable the exible canvas connection to be eliminated.
The duct network must be laid out to avoid any rectilinear runs betweens the heat pump outlet and the air
distribution outlets.
The return air intake ducts can be connected to a grille/lter located at the base of a wall, then directed via
hollow partitions towards a ceiling mounted plenum or via ceiling mounted grilles. The ceiling grilles must
not be located directly below the air conditioning unit.
The return air intake duct can be connected directly to the standard lter bracket. (Lateral lter removal
advisable).
Do not drill panel screws directly into the unit’s casing for connecting the blowing and return air intake ducts,
especially on the air return side, as there is a risk of damaging the condensate recovery tray and the battery.
Recommended layout diagram for installation
with several air distribution outlets

English
617
1196.50
419
151
A
230
349
B
A
230 349
IN LINE BLOWING
(STANDARD CONFIGURATION)
REAR BLOWING
RETURN AIR INTAKE
10 SysHrw
11.1. CONNECTION FRAME DIMENSIONS
11.1.1. AIR BLOWING FRAME
11.1.2. RETURN AIR INTAKE FRAME
96 120
A317 403
B345 259

English
1
3
2
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
3000 3200 3400 3600 3800 4000 4200 4400 4600 4800 5000 5200 5400 5600 5800 6000
6200
0
1
2
3
Air flow (m
3
/h)
Available pressure (Pa)
Ductwork curve
11SysHrw
11.2. MODIFYING THE AIR BLOWING DIRECTION
The unit sizes 096 to 120 can be supplied congured for either
frontal air blowing, known as "IN LINE", or for side air blowing,
known as "REAR". It is also possible to modify the air-blowing
conguration on site. To achieve this:
1. Remove the top panel 1.
2. Remove the fan motor access panel 2and release a small
length of motor cable.
3. Remove the fan blower panel 3.
4. Fit the fan blower panel 3in the same location as the
access panel 2.
5. Ret the fan access panel 2.
6. Ret the top panel 1.
11.3. FILTER ACCESS
Each unit is supplied with a connection frame also serving as the lter
support. This enables to lter to be removed from the side without
having to dismantle the duct or the connection frame.
11.4. VENTILATION
An outdoor air intake (new air) may be required for ventilation. The blown air temperature must be
controlled in order to avoid the temperature of the mixture of outdoor air and return air at the heat pump
inlet exceeding the appliance’s operating limits. It is also common practice to shut down ventilation during
periods of inoccupation (night time setting of the set temperature).
Each appliance’s ventilation system is generally a sub-system within the building, with its own distribution
duct network. The simple introduction of outdoor air into each return air plenum, quite close to the unit’s
return air intake is sufcient and recommended. New air should not be introduced directly into the appliance.
Provide for a sufcient distance to ensure effective mixing of the outdoor air with the return air. (Refer to
"Operating limits").
The ow / static pressure adjustment is made with the aid of a variable pulley. When adjusting this pulley,
it is important to ensure that the belt is positioned properly. The pulleys / belt assembly must be aligned
perfectly and the belt tensioned in accordance with best practices.
11.5. AERAULIC ADJUSTMENT
11.5.1. MODEL SYSHRW096
0. Pulley close 0 round
1. Pulley open 1 round
2. Pulley open 2 round
3. Pulley open 3 round

English
0
20
40
60
80
100
120
140
160
180
200
220
240
260
280
300
3600 4100 4600 5100 5600 6100 6600 7100 7600 8100 8600
0
1
2
3
Air flow (m
3
/h)
Available pressure (Pa)
Ductwork curve
Main return
pipe work Hoses
Spherical
dome valve
Siphon
Main condensate
drainage pipe work
Main water supply
pipe work
12 SysHrw
11.5.2. MODEL SYSHRW120
0. Poulie fermée
1. Poulie ouverte 1 tour
2. Poulie ouverte 2 tours
3. Poulie ouverte 3 tours
12. HYDRAULIC CONNECTIONS
12.1. RECOMMENDATIONS FOR HYDRAULIC CONNECTIONS
1. t is recommended that all units are connected to a water supply and return pipe system of the
Tickelman Loop type. The Tickelman Loop system is self-balancing and thus only requires manual
balancing if a large number of units with different ow and pressure loss characteristics are
connected to a single hydraulic loop. A very simple way of checking the hydraulic balance is to
measure the temperature difference between the water connections. To ensure a correct water ow,
the difference must be in the region of 3 to 7 °C in Cooling mode and 2 to 5°C in Heating mode.
A system with two parallel pipes can also operate in a perfectly adequate manner, but it is more
difcult to achieve, and to maintain, balance.
2. Steel, copper or P.V.C. pressure pipes may be used.
3. It is advisable to make the unit’s water supply and return conveyance lines with short lengths of
high-pressure hose, as they form excellent shock absorbers for unit operating noise and hydraulic
pressure surges.
One of the hose ends must be tted with a rotating connector to facilitate removal for maintenance.
Rigid pipes can be connected directly to the unit, but this is not recommended due to their inability to
absorb vibrations and noise.
Rigid pipes must be equipped with removable connectors to facilitate future removal of the unit from
its location.
4. Certain exible hose threaded connectors are supplied with sealing paste. If this is not the case, use
Teon tape to create a tight seal.

English
40mm
40mm
2%mini
INTERCONNECTED CONVEYANCES
Return conveyance
Supply conveyance
Rubber
hose
Main
circuits
13SysHrw
5. Each unit must be equipped with isolation valves on the water inlet and outlet pipes. The return
isolation valve is used for both cutting off the water supply and balancing the installation’s water
ow. As it is used to establish the balance of the ows, it must be equipped with a lockable position
end stop. This end stop ensures that, after the valve is closed, it can only be re-opened as far as the
position required to maintain a balanced water ow.
6. Never connect a unit to the water supply and return lines without completely cleaning and
flushing out the hydraulic loop beforehand. After performing these operations, the
units must be connected, with all valves completely open, ready for the system to be
lled with water.
COMMENT: In order to limit clogging the plate heat exchanger and to optimise unit
operation, it is advisable to equip the system with a sieve lter (Ø 0.8 mm) on the unit
water inlet pipe work. This lter should be installed between two isolation valves and
should remain accessible to the user for periodic checks.
7. Use steel, copper or P.V.C. pipes for the condensates drainage pipe. Each unit is supplied with a
connector for condensates drainage.
8. The condensates drainage line must
comprise a siphon and run from
the unit on a downward slope of
at least 2%. Generally, the siphon
is connected directly to the unit’s
condensates drainage outlet. A length
of plastic pipe can be used between
the siphon and the condensates
drainage line.
A complete condensates drainage
system with copper or P.V.C. pipe can
also be used.
Screw-on connectors shall be tted
to facilitate drainage pipe removal if
copper pipe is used for the drainage
pipe work.
9. No point of the condensates drainage pipe work should be located above the level of one of the
units’ condensate drainage outlet connection.
10. The circuits’ high points must be bled of air.
11. Comply with current regulations in terms of dielectric isolation of the connectors and the pipe
work.
12.2. RECOMMENDATIONS FOR CLEANING AND FLUSHING OUT THE SYSTEM
1. Before commissioning an appliance for the rst time, the water loop must be cleaned and rinsed out
to remove any dirt and manufacturing debris.
If the appliances are equipped with isolation valves (either electric or pressostatic), the water supply
and return conveyance circuits to and from each machine must be connected to each other. This will
avoid any dirt being introduced into the units.
Flushing water through the units is acceptable if they are
not equipped with water ow control devices.
2. The system must be lled from the mains water supply. All
air bleeds must be open during lling. Close the air bleeds
once the system is lled.
The installer must start the main circulation pump with the
water top-up tap on the pressure reduction valve in the
open position. Check the air bleeds by increasing order of
height to ensure water ows freely throughout the entire
system.
Power supply to the cooling tower must be shut down,
and the water loop temperature regulation thermostat
must be set at 27 °C.
As the water circulates through the system, the installer
must seek out and repair any possible pipe work leaks.

English
Outlet water tempera-
ture sensor
Water circuit inlet / outlet
differential pressostat
Water outlet
Water inlet
14 SysHrw
12.3. PROTECTION AGAINST FREEZING
On all appliances, anti-freezing protection is provided by a temperature probe connected to the regulator.
This shuts down the SYSHRW if the water outlet temperature is below 10°C (cooling mode) or 13°C (heating
mode) for 5 seconds.
A fault code 111110000 (5 ashes) is then generated.
After 20 minutes’ stoppage, if the temperature rises over 13°C, the fault is cancelled automatically and the
SYSHRW is authorised to restart.
Note:
If 3 default codes 111110000 (5 ashes) are generated in less than one hour, then the regulator switches
the SYSHRW to total safety shutdown mode.
Am additional protection is assured by a
differential pressostat. This safety device is
tted on the plate exchanger water side in
order to guarantee that water circulates in
the installation on one hand, and that there
is an adequate minimum water ow on the
other hand.
Note:
The "differential pressostat" provides "total
safety shutdown" the second time it is
activated.
It can be reset manually by switching off the
mains supply to the appliance.
The alarm fault code generated is code
100000000 (1 ash).
The drain cocks, on the lowest points on the circuit, must be open for ushing out and chasing out
any impurities. Ensure that the mains water valves are adjusted to allow water to enter at the same
speed as it exits. Check the pump inlet pressure gauge and manually adjust the compensating valve
to maintain the same pressure before and after the opening of the drain taps. Flushing must be
performed for at least two hours, or longer if necessary, until clear and clean water is obtained at the
drain taps.
3. Stop the additional heating and the water circulation pump. Open all the bleed points and the drain
taps to empty the system completely. The short-circuited water supplies and returns must now be
connected to the units’ inlet and outlet connections. It is recommended to use Teon tape on the
pipe connector threads. Do not use sealing paste on the hoses’ rotating connecters.
4. Formerly, sodium tri-phosphate used to be recommended as a cleaning agent for
flushing. However, nowadays numerous countries forbid the introduction of phosphates into their
wastewater networks. Therefore, it is now recommended that the system is flushed out with
hot water (30 °C).
5. Fill the system again with clean water. Test the water acidity level (litmus paper), and treat as
required to obtain a slightly alkaline water quality (pH 7.5 to 8.5).
At this stage, the recommended percentage of anti-freeze can be added. Use commercial quality
anti-freeze specically intended for air conditioning systems. Do not use automobile radiator anti-
freeze.
6. On the main electrical cabinet, adjust the heater set temperature point at 20 °C and the cooling
tower set temperature at 30 °C. Connect the power supply to all motors and start the circulation
pumps.
When the normal ow level has been reached through all components, including the cooler (irrespective
of the season) and when the air is bled form the system and the loop temperature has stabilised, each
appliance is ready to be checked, tested and started for balancing the air and water ows.

English
The SYSHRW must not run on a network with open loops, likely to cause incidents related to
oxygenation, or with non treated table water.
Caution
If the water circuit is to be drained for a time exceeding one month, the circuit must be fully
charged with nitrogen to prevent any risk of corrosion by differential venting.
Caution
The manufacturer is not liable for recommendations in terms of water treatment (call a specialized
company).
However, this matter has a critical nature, and particular care must be given to ensure that the type
of treatment applied is effective.
The liability of the manufacturer or its representative will not be sought when non treated water
or non compliant quality water is used.
Caution
15SysHrw
12.4. WATER QUALITY
The water must be analyzed; the hydraulic network system installed must include all elements necessary
for water treatment: lters, additives, intermediate exchangers, drain valves, vents, check valves, etc.,
according to the results of the analysis.
Using improperly treated or non treated water in the SYSHRW may cause scaling, erosion, corrosion or
algae or sludge deposits in the exchangers. Refer to a specialist skilled in water treatment to determine
any treatment to apply. The manufacturer will not be held liable for damages caused when non treated or
improperly treated water, demineralized water, salty water or sea water are used.
Apply the following guidelines :
²No NH4+ ammonium ions in the water, highly detrimental to copper. <10mg/l
²Cl- chloride ions are detrimental to copper with a risk of puncture by picking corrosion. <10mg/l.
²SO42- sulphate ions may cause perforating corrosion. < 30mg/l.
²No uoride ions (<0.1 mg/l)
²No Fe2+ and Fe3+ ions, particularly in case of dissolved oxygen. Fe< 5mg/l with dissolved oxygen
< 5mg/l. The presence of these ions with dissolved oxygen indicates corrosion of steel parts, likely
to generate corrosion of copper parts under Fe deposits, particularly in the case of multitubular
exchangers.
²Dissolved silica: silica is an acid element of water and may also cause corrosion. Content < 1mg/l.
²Water hardness: TH > 2.8K. Values between 10 and 25 may be recommended. This facilitates scaling
deposits likely to limit copper corrosion. Excess TH values may lead to clogging the pipes.
²TAC<100
²Dissolved oxygen: Prevent any sudden change in the water's oxygenation conditions. Also, avoid
deoxygenating water by sparging inert gas as well as overoxygenating it by pure oxygen sparging.
Disturbing oxygenation conditions destabilizes copper hydroxides and particle salting-out.
²Electrical Resistivity - Conductivity: The higher the resistivity, the slower the corrosion. Values above
3000 ohm/cm are preferred. A neutral environment favours maximum resistivity. For electrical
conductivity, values around 200-600 S/cm can be recommended.
²pH: neutral pH at 20°C (7 < pH < 8)

English
16 SysHrw
400 V three phase models:
Connection to the terminals N; L1; L2; L3 and PE of the general terminal block X or the Q1 switch
supplied as an option.
13.2.1. POWER SUPPLY
The power supply must be protected by an FFG mains circuit breaker or fuses supplied by the installer.
A switch, in compliance with the characteristics detailed in Chart 1, can be supplied as an option. (It must be
tted near the unit if supplied by the installer).
All the electrical installations and wiring associated with this equipment must comply with local installations
regulations.
CHART 1:
13.2. LEGEND
13. WIRING DIAGRAM AND LEGEND
13.1. WIRING DIAGRAM
SEE APPENDIX
SE 4254 models 096/120 cooling only or heatpump 3N 400V +/-10% 50Hz
SE 4487 models 096/120 + modbus cooling only or heatpump 3N 400V +/-10% 50Hz
N 764
MODELS
CHARACTERISTIC OF
SWITCH Q1
(gauges minimum for
switch)
without heating with heating
Starting
amperage
Fuse aM Full load
current (max) Fuse aM Full load current (max)
400V
096 Ith = 40 A Pdc = 200 A 25 A aM 20.4 A 32 A aM 27 A 114.6 A
120 Ith = 40 A Pdc = 200 A 25 A aM 24 A 32 A aM 32 A 122.4 A
13.2.2. DESCRIPTION OF WIRING DIAGRAM REFERENCES
FFG : Fuses according to chart 1 (not supplied)
Q1 : Main switch (supplied as an option)
FF7 : Magneto-thermal trip switch
KA1 : Phase cut-out and sequence control module
X1 : Connection terminal block
X2 : Connectionr block for wire heating
13.2.2.1. COOLING
M1 : Refrigeration compressor.
K1 : M1 compressor power contactor. (three phase models only)
LP : Automatic reset Low Pressure pressostat.
HP : Automatic reset High Pressure pressostat.
RV1 : 4 way valve for cycle inversion.
SW : condensed water level detector

English
17SysHrw
13.2.2.2. VENTILATION
MV : Treated air fan motor.
K3 : MV contactor.
FT3 : MV thermal relay.
13.2.2.3. WATER CIRCUIT
Y1 : Water circuit valve (not supplied-available in option).
FDP : Water circuit inlet / outlet differential pressostat
13.2.2.4. CONTROL AND REGULATION
RCL : Local control module.
ICT : Anti-freezing protection sensors.
RT : Intake air temperature sensor.
LWT : Outlet water temperature sensor.
SM : Remote ON/OFF switch, 100 m maximum (Not supplied -Please consult us for longer distances).
CLK : CLOCK input remote ON/OFF
T1 : Timers
KA4 : Relay
13.2.2.5. REMOTE MANAGEMENT AND PROGRAMMING MODULE KIT (<100M)
µBMS : Supervision module
13.2.2.6. FAULT REPORTING OPTION
KA2 : Remote fault reporting relay (3 A max / 230 V)
13.2.2.7. ELECTRIC HEATING BATTERY OPTION
FF2 : Fuse carrier for heating
EC : Heating elements
K2 : Power contactor for heating elements
FA : Automatic reset safety thermostats.
FM : Manual reset safety thermostats.
13.2.3. PRESSOSTATS SETTINGS
LP : Low Pressure xed setting: 1.5 bar (20 PSI) reset at 2.4bar (35 PSI)
HP : High Pressure xed setting: 29 bar (420 PSI) reset at 21 bar (305 PSI).
13.2.4. COLOUR CODE
BK : Black
OG : Orange
GNYE : Green/Yellow
BN : Brown
WH : White
RD : Red
BU : Blue
GY : Grey
VT : Violet
YE : Yellow

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18 SysHrw
VERY IMPORTANT:
3N~400V-50HZ
The outdoor unit is equipped as standard with a phase sequence and cut-out controller located in the
electrical box.
THIS PRODUCT IS EQUIPPED WITH A PHASE SEQUENCE CONTROLLER. THE LED’s INDICATE THE FOLLOWING
CONDITIONS:
Green LED = 1
Yellow LED =1
Low voltage supply
The compressor rotation
direction is correct
Green LED = 1
Yellow LED =0
Phase inversion or phase
absent (L1)
The compressor and the
fans do not start.
Green LED = 0
Yellow LED =0
Phase absent (L2 or L3)
the compressor and the
fans do not start.
13.2.5. SETTING OF THERMAL PROTECTION AND FUSES
MODELS thermal relay
FT3 Magneto-thermal trip switch
FF7
FF2 Fuse
/gG type
400V 096 2.6 A 2 A 25 A gG
120 3.4 A 2 A 32 A gG
14. ELECTRICAL CONNECTIONS
14.1. GENERALITIES
Ensure that the available electrical power supply and the network frequency are matched to the required
operating current, taking account of the appliance’s specic location and the current required to supply any
other appliances connected to the same circuit.
1. Ensure that the unit is supplied with the specied voltage. Two stufng boxes and one grommet hole
are provided on the side of the appliance. They are used respectively for the power and the control
wiring. The power supply line must be properly dimensioned with a motor supply type fuse or a
mains circuit breaker to protect the circuit against voltage surges. (Refer to the Maker’s Plate for the
voltages to be taken into consideration).
2. The electrical power supply three-phase 400V/3ph/50Hz must comprise a neutral to feed the control
circuit.
3. Always shut down the power supply to the unit before connecting the thermostat wiring.