Fujitsu Waterstage GENERAL WOHG112LHT User manual

Installation and
operating manual
intended for professionals
To be saved for
future consultation
Document n° 1775-8 ~ 22/10/2018
FR EN IT NL DE
Fujitsu General (Euro) GmbH
Werftstrasse 20
40549 Düsseldorf - Germany
Split system
Air to Water Heat Pump
Outdoor unit
WOHG112LHT
WOHG112LCTA
WOHG140LCTA
WOHK112LCTA
WOHK140LCTA
WOHK160LCTA
Hydraulic unit
WSHG140DG

Contents
Package . . . . . . . . . . . . . . . . . . . . . . . . 4
Denitions . . . . . . . . . . . . . . . . . . . . . . . 4
Specications . . . . . . . . . . . . . . . . . . . . . 5
Description. . . . . . . . . . . . . . . . . . . . . . . 9
Operating principle . . . . . . . . . . . . . . . . . 10
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Regulation installation and maintenance conditions 12
Unpacking and reservations. . . . . . . . . . . . . 12
Receipt . . . . . . . . . . . . . . . . . . . . 12
Handling . . . . . . . . . . . . . . . . . . . 12
Containment of refrigerant circuits . . . . . . 12
Accessories provided . . . . . . . . . . . . . 12
Installation of refrigerant connections . . . . . . . . 13
Installation of the outdoor unit . . . . . . . . . . . . 14
Installation precautions . . . . . . . . . . . . 14
Outdoor unit positioning . . . . . . . . . . . 15
Condensate drain hose . . . . . . . . . . . . 15
Installing the hydraulic unit . . . . . . . . . . . . . 16
Installation precautions . . . . . . . . . . . . 16
Positioning the hydraulic unit . . . . . . . . . 16
"This device requires for its installation, the intervention of qualied personnel with a certicate of
capacity for handling refrigerants.
Description of the unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Refrigerant gas connection and lling the installation with gas . . . . . . 17
Rules and precautions. . . . . . . . . . . . . . . . 17
Shaping the refrigerant pipes . . . . . . . . . . . . 17
Bending . . . . . . . . . . . . . . . . . . . . 17
Creating the arings . . . . . . . . . . . . . 17
Accessing the hydraulic unit’s
refrigerant connections . . . . . . . . . . . . 18
Check and connecting. . . . . . . . . . . . . . . . 20
Filling the installation with gas. . . . . . . . . . . . 22
Seal test . . . . . . . . . . . . . . . . . . . 23
Creating a vacuum . . . . . . . . . . . . . . 23
Filling the installation with gas . . . . . . . . 24
Sealing test . . . . . . . . . . . . . . . . . . 24
Additional charge . . . . . . . . . . . . . . . 24
Pump down operation (Refrigerant collecting
operation) outdoor unit . . . . . . . . . . . . 25
Hydraulic connecting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Connecting to the Heating circuit . . . . . . . . . . 26
Rinsing out the installation . . . . . . . . . . 26
Connecting . . . . . . . . . . . . . . . . . . 26
Volume of the heating system . . . . . . . . 27
Filling and purging the installation . . . . . . . . . . 27
Heating circulation pump speed settings . . . . . . 28
Installation and operating manual "1775 - EN"
Air to Water Heat Pump split system
- 2 -

Electrical connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
General . . . . . . . . . . . . . . . . . . . . . . . 30
Characteristic of the electrical supply. . . . . 30
General remarks on electrical connections . . 30
Overview of all the electrical connections . . 31
Cable section and protection rating. . . . . . . . . 31
Electrical connections
on the single phase outdoor unit side . . . . . . . . 32
Electrical connections
on the 3- phase outdoor unit side . . . . . . . . . . 33
Electrical connections on the hydraulic unit side . . 34
Outdoor sensor . . . . . . . . . . . . . . . . . . . 38
Room thermostat and/or room control unit . . . . . 38
Installing a room sensor . . . . . . . . . . . 38
Installing a room control unit . . . . . . . . . 38
Fan convectors or dynamic radiators area . . 38
Commissioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Conguring room thermostat . . . . . . . . . . . . 39 Conguring room control unit . . . . . . . . . . . . 39
Regulation system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
User interface, Room control unit (option) and Room
thermostat (option) . . . . . . . . . . . . . . . . . 40
Description of the display . . . . . . . . . . . . . . 42
Temperature control . . . . . . . . . . . . . . . . . 42
Set to . . . . . . . . . . . . . . . . . . . . . 42
Parametering the setting . . . . . . . . . . . . . . 44
General . . . . . . . . . . . . . . . . . . . . 44
Setting parameters . . . . . . . . . . . . . . 44
Recommended settings according to the heat
emitters installation . . . . . . . . . . . . . . 44
List of function lines
(settings, diagnosis, status). . . . . . . . . . 45
Overall hydraulic layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Electrical wiring diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Faults displayed on the hydraulic unit . . . . . . . . 66
Faults displayed on the single phase outdoor unit . 68
Faults displayed on the 3-phase outdoor unit . . . . 69
Information display . . . . . . . . . . . . . . . . . 70
Maintenance of the installation . . . . . . . . . . . . . . . . . . . . . . . . 71
Hydraulic checks . . . . . . . . . . . . . . . . . . 71
Checking the outdoor unit . . . . . . . . . . . . . . 71
Electrical checks. . . . . . . . . . . . . . . . . . . 71
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Emptying the hydraulic unit . . . . . . . . . . . . . 71 Distribution valve . . . . . . . . . . . . . . . . . . 71
Quick-start procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Start-up check-list . . . . . . . . . . . . . . . . . . 72
Before starting-up. . . . . . . . . . . . . . . 72
Starting-up . . . . . . . . . . . . . . . . . . 73
ErP performance values . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Settings sheet . . . . . . . . . . . . . . . . . . . . 74
Start-up data sheet . . . . . . . . . . . . . . . . . 75
ErP Denition . . . . . . . . . . . . . . . . . . . . 76
ErP specications . . . . . . . . . . . . . . . . . . 76
Package che . . . . . . . . . . . . . . . . . . . . 78
Instructions for the user . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Installation and operating manual "1775 - EN" - 3 -
Air to Water Heat Pump split system
ErP performance values . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Instructions for the user . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

1.1 Package
• 1 package: Outdoor unit.
• 1 package: Hydraulic unit and outdoor sensor.
1.2 Denitions
- Split: The heat pump consists of two elements
(an outdoor unit for outdoor and a hydraulic unit for
inside the dwelling).
- Air/water: The surrounding air is the energy source.
This energy is transmitted to the water in the heating
circuit by the heat pump.
-Inverter: The fan and compressor speeds are modulated
according to the heating requirements. This technology
enables you to save on energy and operate on a single-
phase power supply, whatever the heat pump's output,
by avoiding heavy intensities on start-up.
-COP (coe󰀩cient of performance): This is the
relationship between the energy transmitted to the
heating circuit and consumed electrical energy.
1 Description of the unit
Installation and operating manual "1775 - EN"
Air to Water Heat Pump split system
- 4 -
Optional equipment
• 2nd circuit kit (code UTW-KZS*E)
for connecting 2 heating circuits.
• Regulation extension kit (code UTW-KRE*D)
to manage a 2nd heating circuit, swimming pool,
telephone modem etc...
• DHW kit (code UTW-KDW*D)
for connecting a DHW tank
(with built-in electrical back-ups).
• Boiler connection kit (code UTW-KBS*D)
for connecting a boiler to the heat pump.
• Electrical back-ups kit (code UTW-HS6XG) or
3-Phase electrical back-ups kit (code UTW-HT9XG).
• Room thermostat (code UTW-C55*A),
Wireless room thermostat (code UTW-C58*D)
for correcting the ambient temperature.
• Remote control (code UTW-C75*A),
Wireless remote control (code UTW-C78*A)
for correcting the ambient temperature and
programming the heat pump.
• Cooling kit (code UTW-KCL*D).
• High ow rate circulating pump kit (code UTW-PHF*D)
for the installation of 1 circuit oor heating
Packing list
Heat Pump Outdoor Unit Hydraulic Unit
Model Reference Reference
Waterstage High Power 11 single phase WOHG112LHT
WSHG140DG
WOHG112LCTA
Waterstage High Power 14 single phase WOHG140LCT
Waterstage High Power 11 3-phase WOHK112LCT
Waterstage High Power 14 3-phase WOHK140LCT
Waterstage High Power 16 3-phase WOHK160LCT
Scope of application
This heat pump provides:
- Heating in winter.
- Control of two heating circuits*.
- Production of domestic hot water* (provided that
combined with a DHW tank).
- Installation with boiler connection* as a supplementary
heating for the coldest days.
- Cooling in summer* (for oor heating-cooling system
or fan-convectors).
- Heating the swimming pool*.
* : These options require the use of additional kits
(see para "Optional equipment").

1.3 Specications
1 Sound pressure level in (x)m of the device, 1.5m of the ground, the open eld.
2The sound power level is a laboratory measure of the emitted sound power but
contrary to the noise level, it doesn't correspond to the measure of the felt.
3Refrigerant R410A (as per the standard EN 378.1).
4Factory charge of refrigerant R410A.
5Taking into account the possible additional load of refrigerant R410A
(see "Additional charge", page 24).
6The announced thermal and acoustic performances are measured with 7,5m length
refrigerant lines.
Installation and operating manual "1775 - EN" - 5 -
Air to Water Heat Pump split system
Designation model Waterstage High Power 11 Single
phase
14 Single
phase
11
3-Phase
14
3-Phase
16
3-Phase
Nominal heating performances (outdoor temperature / initial temperature)
Heat output
+7 °C / +35 °C - Floor heating system kW 10.80 13.50 10.80 13.50 15.17
-7 °C / +35 °C - Floor heating system kW 10.80 12.00 10.80 13.00 13.50
+7 °C / +55 °C - Radiator kW 7.59 9.68 9.29 10.60 12.71
-7 °C / +55 °C - Radiator kW 7.57 9.20 9.27 10.10 12.00
Power absorbed
+7 °C / +35 °C - Floor heating system kW 2.55 3.24 2.52 3.12 3.72
-7 °C / +35 °C - Floor heating system kW 4.32 5.08 4.28 5.13 5.40
+7 °C / +55 °C - Radiator kW 3.07 3.95 3.52 4.40 4.93
-7 °C / +55 °C - Radiator kW 4.57 5.08 5.09 5.65 6.89
Coe󰀩cient of performance (COP) (+7°C / + 35°C) 4.24 4.17 4.29 4.17 4.08
Electrical characteristics
Supply voltage (50 Hz) V 230 400
Maximum current for appliance A 22 25 8.5 9.5 10.5
Nominal current A 11.4 14.2 3.7 4.8 5.5
Maximum current of the electrical back-ups A 26.1 13
Power of the electrical back-ups kW ajustable 3 or 6 kW
(single phase) 9 kW (3-phase)
Real power absorbed by the circulation pump W 39.5
Maximum power absorption by the outdoor unit W 5060 5750 5865 6555 7245
Hydraulic circuit
Maximum operating pressure MPa (bar) 0.3 (3)
Hydraulic system ow rate (mini/maxi) 4°C<Δt<8°C
(nominal conditions) l/h 1170 / 2340 1460 / 2920 1170 / 2340 1390 / 2790 1650 / 3290
Various
Weight of outdoor unit kg 92 99
Sound power level according to EN 12102 1 (hydraulic unit) dB 46
Sound power level according to EN 12102 1 (outdoor unit) dB 68 69 69 70 71
Weight of hydraulic unit (empty / full of water) kg 40 / 56
Water capacity of the hydraulic unit l 16
Heating system operating limits
Hydraulic unit operation range °C 0 / +45
Outdoor temperature mini/maxi °C -25 / +35
Initial max. heating water temperature Floor heating system °C 45
Initial max. heating water temperature Low temperature radiator °C 60
Flow min. heating water temperature °C 8
Refrigeration circuit
Diameter of gas pipes inches 5/8
Diameter of liquid pipes inches 3/8
Factory charge of refrigerant R410A 2g 2500
Maximum operating pressure MPa (bar) 4.15 (41.5)
Minimum / Maximum length of pipes 3 / 5 m 5 / 15
Maximum length of pipes 4 / Maximum level di󰀨erence m 20 / 15
1The sound power level is a laboratory measure of the emitted sound power but
contrary to the noise level, it doesn't correspond to the measure of the felt.
2Refrigerant R410A (as per the standard EN 378.1).
3Factory charge of refrigerant R410A.
4Taking into account the possible additional load of refrigerant R410A
(see "Additional charge", page 24).
5The announced thermal and acoustic performances are measured with 7,5m length
refrigerant lines.