7
EN
ENGLISH
HKF25-IM-DE-W-UK-11-2020-Rev.0 | Part no. 10027337
7.1 Installation diagram
7.2 Installation
All screw fittings must be checked and tightened if
required prior to installation and commissioning!
Torque:
• 3/4" fittings 35 Nm
• 1" fittings 55 Nm
• 11/4" fittings 90 Nm
• 11/2" fittings 130 Nm
Requirement
• The valves are pre-installed at the factory but must be
checked for leaks during commissioning (pressure test).
1. Dismantle the front panel of the pump group.
2. Mark the drilling points for installing pump group.
3. Drill the holes corresponding to the screw and anchor size.
4. Place the anchor.
5. Screw the screws into the anchor.
6. Place the pump group to the wall in a vertical installation
position (see „7.1 Installation diagram“).
7. Screw the screws into the anchor.
8. Remove the thermometer handles and dismount the inter-
mediate insulation.
9. Connect the supply and return lines and check that all
screw connections are tight.
7.3 Initial Commissioning
Requirement
• The pump group is completely assembled.
Connection of the power supply
1. Connect the power supply (see separate pump
documentation).
9
The pump group switches on automatically after being
connected to the power supply.
2. Vent the heating system.
The pump group must be switched off
during the ventilation process!
3. Mount intermediate insulation and attach thermometer grips.
4. Mount the front panel of the pump group.
Setting the supply temperature
1. While the pump group is operational, you can set the
desired supply temperature using the hand wheel on the
thermostatic mixing valve.
2. The target value is checked using the supply thermometer.
9
For further information on thermostatic mixing valve,
please refer to the enclosed instructions.
7.4 Thermometer handle position
A
B
C
A
Operation position: Gravity brake ready to work; ball
valve open
B
Empty: Gravity brake open; ball valve 1/2 open (only
included in the supply line)
C
Service position: Ball valve closed
