Fujitsu UTW-KZDXE Installation guide

Type
Installation guide

Fujitsu UTW-KZDXE is a second circuit kit designed for heat pumps with integrated DHW. It allows for the control of two heating circuits and requires the installation of the 2nd circuit and Regulation extension kit (code UTW-KRE*D) to function. With a maximum operating pressure of 3 bar and a power consumption of 50 W, it features a 3-way mixing valve with a nominal diameter of 26x34 mm and a flow/return diameter of 26 x 34 mm. The kit includes a circulation pump, mixing valve, flow sensor, and various pipes and connectors for installation.

Fujitsu UTW-KZDXE is a second circuit kit designed for heat pumps with integrated DHW. It allows for the control of two heating circuits and requires the installation of the 2nd circuit and Regulation extension kit (code UTW-KRE*D) to function. With a maximum operating pressure of 3 bar and a power consumption of 50 W, it features a 3-way mixing valve with a nominal diameter of 26x34 mm and a flow/return diameter of 26 x 34 mm. The kit includes a circulation pump, mixing valve, flow sensor, and various pipes and connectors for installation.

Installation instructions
intended for the
professional technician
these must be kept safe
for subsequent consultation
7
8
3
Fujitsu General (Euro) GmbH
Werftstrasse 20
40549 Düsseldorf - Germany
Subject to modications without notice.
Non contractual document.
" This manual primarily concerns the installation and
connection of the second circuit kit.
To install and congure the heat pump, please refer to
the heat pump’s technical instructions manuals.
2nd circuit kit
UTW-KZD*E
for heat pump, Split integrated DHW
Document n° 1600-8 ~ 13/12/2018
FR NL DE EN IT
ES PT PL PT PT
1 Description of the equipment
1.1 Package
• 1 package: 2nd circuit kit.
On reception, before you t anything, it is essential
that you check the parts received and search for any
damage caused during transport.
1.2 Scope of application
The control of 2 heating circuits requires the installation
of the 2nd circuit and Regulation extension kit
(code 075311).
This corresponds to the preset congurations 2 and 4
on the heat pump’s hydraulic unit’s regulator (line 5700).
gure 2 - Hydraulic pressures and ow rates available
(Hydraulic unit + 2nd circuit kit)
gure 1 - Dimensions in mm
1.3 Specications
Power absorbed 50 W
Maximum operating pressure 3 bar
Supply voltage 230V - 50Hz
Flow/return diameter (male) 26 x 34 mm
Servomotor:
- Travel: 90°.
- Operating time for completely opening or closing the
valve: 4 min.
3 way mixing valve:
- Nominal diameter: 26x34 mm.
- KV type: 6.
Variable pressure
Constante pressure
0
1
2
3
4
5
6
7
8
mCE
1 mbar=10 mmCE=100 Pa
m/h
3
1
1,5 20,50
2
4
7
0
1
2
3
4
5
6
7
8
mCE
1 mbar=10 mmCE=100 Pa
m/h
3
1
1,5 20,50
2
4
7
Installation instructions "1600 - EN"
2nd circuit kit
- 2 -
(code UTW-KRE*D).
175 210
1840
47
244
1189
1141
648
1296
698
103
1850
43
630
599
576
644
272 55
8472
1556
1762
Mixed heating
ow (CC1)
Direct heating
ow (CC2)
Mixed heating
return (CC1)
Direct heating
return (CC2)
Legend :
AE - DHW electrical backup
AVS - Extension board, 2 circuits
CAR - Non-return valve
C - Circulation pump HP
CCM - Mixed-circuit heat pump
D - Shut-off
GS - Safety unit
K2c - 2nd circuit kit
MT - Thermostatic mixer valve
PC - Floor heating system
Pg - Bleeder valve
R - Radiators
SA1 - Room thermostat CC1 (option)
SA2 - Room thermostat circuit CC2 (option)
Sae - Temperature safety of DHW electrical
back-up
SaeC - Temperature safety
(Heating back-up option)
SDp - Initial sensor HP
SDpM - Mixed circuit initial sensor
SE - Outdoor sensor
SP - Heated oor thermal safety fuse
SR - Return sensor
Ssa - DHW sensor
SSe - Safety valve
VD - Distribution valve
VE - Expansion vessel
VM - Mixer valve
SE
Ssa
Sae
AE
SR
VE
C
VD
GS
MT
CAR
CAR
SDp
Pg
SaeC
SSe
D
R
OU
PC
SA
SA
Rdyn*
OU
SA*
BT *
M
SP
CCM
VM
SDpM
K2c
CAR
AVS
SA
SA
SA*
Circuit 1
Circuit 2
CAR
Mixed circuit
(CC1)
Direct circuit
(CC2)
OR
1.4 Overall hydraulic layout
Conguration 2 : 2 heating circuits
Installation instructions "1600 - EN" - 3 -
2nd circuit kit
2 Installation instructions
2.1 Hydraulic connections
The connection must comply with good trade practice
according to local building regulations.
The appliance must be connected to the installation
with union connectors and shut-off valves to facilitate
its removal.
Reminder: Seal everything when tting in accordance
with prevailing trade practice for plumbing work:
- Use suitable seals (bre seals, o-rings).
- Use Teon tape or hemp.
- Use sealing paste (synthetic depending on the case).
• Installing the hydraulic kit
- Remove the front plate and cover.
1
2
3
• 1 - Take out the expansion vessel. Fix the support.
• 2 - Install the 2-circuit kit. Observe the correct ow
direction. It is imperative to observe direction of
assembly of the valve:
Channel 1: HP ow mixed circuit (CC1).
Channel 2: mixed heating ow (CC1).
Channel 3: mixed heating return(CC1).
" When the motor turns counter-clockwise, the
mixing control valve is opened (hotter).
• 3 - Install the hose. Put back the expansion vessel.
• 4 - Fitting the non-return valve on the direct circuit
ow (CC2).
Remark:
• 5 - Fitting the ow sensor. Fix the heating ow
temperature sensor with the tightening ring to the CC1
mixed circuit ow piping.
Good contact must be maintained between the heating
ow sensor and the pipework. The contact surface
between the pipework and the sensor must be free of
rust and paint and the xing collar must be tightened well.
gure 4 - Mixing valve
Installation instructions "1600 - EN"
2nd circuit kit
- 4 -
Back view
gure 3 - Pipes passages
- Replace the cable grommet with membrane by the
cable grommet included inthe kit (see ).
gure 5 - Installing the hydraulic kit
Mixed heating
ow (CC1)
Mixed circuit
initial sensor (CC1)
Mixed heating
return (CC1)
Direct heating
ow (CC2)
Direct heating
return (CC2)
5
4
2
1
3
Installation instructions "1600 - EN" - 5 -
2nd circuit kit
2.2 Installing the extension board
- Please refer to the instructions for the extension
regulation kit (code 075311).
2.3 Electrical connections
Ensure that the general electrical power supply has
been cut off before starting any repair work.
The electrical installation must be conducted in
accordance with the prevailing regulations.
The electrical connections must only be made when all
the other tting operations have been completed (xing,
assembly, etc.).
Remark: In the case of a heated oor, connect the
oor heating safety device into the connector of
the oor heating pump (X110 - CC1: Mixed circuit,
X12 - CC2: Direct circuit).
Make the following connections:
• 6 - Circulation pump CC1 (Mixed-circuit).
• 7 - Mixer valve.
• 8 - Initial sensor.
Good contact must be maintained between the heating
ow sensor and the pipework. The contact surface
between the pipework and the sensor must be free of
rust and paint and the xing collar must be tightened well.
• 9 - Shunt on "M".
• 10 - Interconnection between RVS and AVS.
• 11 - Power supply AVS regulation board. Remove the
insulator of the AVS board’s power connector. Connect
the power connector to the AVS board. Please refer to
the instructions for the extension regulation kit.
• 12 - Room thermostat or Room control unit.
• () - Apply the kit’s label on the inside of the hydraulic
unit’s front plate, over the wiring label.
2.4 Pre-utilization check
Congure the parameter 5700 on a conguration 2 or 4.
- Please refer to the manual provided with the HP.
gure 7 - Non-return valves
Valve disengaged
(Purging or lling position)
Valve disengaged
(Purging or lling position)
Valve closed
Normal working setting
Valve closed
Normal working setting
gure 6 - Electrical connection on AVS 55 extension board
X10
L
N
BK
BN
BU
M
X110
X112
X152
X150
X153
X154
X100
Ou/
Or
B2
M
B1
3
2
1
C.C
M
Regulator power
supply (AVS)
Shunt
Room thermostat
or
Room control unit
Mixed circuit (CC1)
Mixer
valve
Mixed-circuit
heat pump (CC1)
Mixed circuit
initial sensor (CC1)
Interconnection between
RVS and AVS
Carte extension
AVS 55
11
12
7
6
10
9
8
Colour code
BK Black
BN Brown
BU Blue
M
9
Installation instructions "1600 - EN"
2nd circuit kit
- 6 -
(code UTW-KRE*D).
3 Spare parts
When ordering spare parts, specify the appliance
type and serial number, the name of the part and the
part number.
Nr Code Designation .................Type ......Qty
1 909909 Circulation pump ................... . . . . . .01
2 110869 Connector .................5 studs .......01
4 988108 Mixing valve + Insulation ............. . . . . . .01
5 142735 Gasket .....................26x34 .......08
6 184094 Pipe ............................. . . . . . .01
7 184091 HP ow pipe ....................... . . . . . .01
8 184093 Flow pipe ......................... . . . . . .01
9 184092 Return pipe ....................... . . . . . .01
gure 8 - Spare parts 2nd circuit kit
Qty = Total quantity on the appliance.
1
2
10
5
11
5
5
7
5
8
9
10
15
18
5
12
13
14
6
4
16
Nr Code Designation .................Type ......Qty
10 110611 Collar ............................ . . . . . .02
11 132243 Hose ............................. . . . . . .01
12 198746 Flow sensor ............ QAD36/101 .......01
13 109517 Sensor bundle ..................... . . . . . .01
14 110870 Connector .................2 studs .......01
15 110047 Non-return valve ................... . . . . . .01
16 110867 Connector .................6 studs .......01
17 150307 Motor ............................ . . . . . .01
18 970109 Bracket ........................... . . . . . .01
17
Installation instructions "1600 - EN" - 7 -
2nd circuit kit
1
2
10
5
11
5
5
7
5
8
9
10
15
18
5
12
13
14
6
4
16
19
19 157326 Cable grommet .................... . . . . . .02
17
Date of installation :
Contact of your heating technician or your after-sales service.
This appliance is marked with this symbol. This means that electrical and electronic products shall not be mixed with general household waste.
European Community countries(*), Norway, Iceland and Liechtenstein should have a dedicated collection system for these products.
Do not try to dismantle the system yourself as this could have harmful effects on your health and on the environment.
The dismantling and treatment of refrigerant, oil and other parts must be done by a qualied installer in accordance with relevant local and national regulations.
This appliance must be treated at a specialized treatment facility for re-use, recycling and other forms of recovery and shall not be disposed of in the municipal waste stream.
Please contact the installer or local authority for more information.
* subject to the national law of each member state
Subject to modications without notice. Non contractual document.
Complies with:
- Low voltage directive 2014/35/UE, under standard EN 60335-1 and EN 60335-2-102.
- Electromagnetic compatibility Diretive 2014/30/UE.
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Fujitsu UTW-KZDXE Installation guide

Type
Installation guide

Fujitsu UTW-KZDXE is a second circuit kit designed for heat pumps with integrated DHW. It allows for the control of two heating circuits and requires the installation of the 2nd circuit and Regulation extension kit (code UTW-KRE*D) to function. With a maximum operating pressure of 3 bar and a power consumption of 50 W, it features a 3-way mixing valve with a nominal diameter of 26x34 mm and a flow/return diameter of 26 x 34 mm. The kit includes a circulation pump, mixing valve, flow sensor, and various pipes and connectors for installation.

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