12
FRIWAC-IM-DE-W-UK-10-2021-Rev.0 | Part no. 10084532
EN
ENGLISH
• Observe Fig. 8-3 for steps 4 to 7.
4. Insert the wall plugs (item 1).
5. Screw the hanger bolts (3) into the wall plugs.
6. Fit the wall bracket (item 2).
7. Locate the domestic fresh water unit vertically on the wall.
Ø 10 mm
1
2
3
Fig. 8-3: Fitting the domestic fresh water unit to the wall
NOTICE
An appropriate safety device against
overpressure on the domestic water supply side must be
installed on site in accordance with the current local water
quality regulations.
h
If shut-off valves are fitted between the domestic fresh water unit
and the safety valve, these must be secured against tampering
during operation by appropriate means (e.g. sealing wire or
locking plate).
• Observe Fig. 8-4 for steps 8 to 10.
8. Fit suitable shut-off valves to the connections (items A, B, C
and D) on the domestic fresh water unit.
9. Connect the fittings on the domestic fresh water unit to the
on-site supply lines.
10. Check all screw connections are tight.
8.2 Starting the unit
Requirements
• The domestic fresh water unit is fully assembled. Observe
Fig. 8-4 for the following steps.
1. Slowly open the primary circuit shut-off valves (items A and
B).
2. Open the vent valve (item 2) by turning the vent key (item 1)
anticlockwise and keep it open until air is no longer escaping.
C
B
D
A
Primary circuit
Secondary circuit
2
1
Fig. 8-4: Domestic fresh water unit connection and venting procedure
!
!
CAUTION
Damaged circulation pump due to dry
running! The circulation pump is running before the
domestic fresh water unit has been vented.
h
Only switch on the circulation pump once the domestic fresh
water unit has been completely filled and vented. Audible noises
which occur when the circulation pump is in operation indicate
air in the system.
3. Connect the power supply to the domestic fresh water unit
(see separate pump documentation).
9
The domestic fresh water unit automatically switches
itself on when the power supply is connected.
4. Program the controller if required
(
see separate instructions
for the controller).
5. Switch the circulation pump on from ‘Manual operation’
on the controller menu and allow the water to flow for
approximately 5 minutes.
6. Vent the primary circuit again.
7. Slowly open the shut-off valves (items C and D) on the
secondary circuit.
8. Slowly open a point of use (e.g. a tap in the kitchen or
bathroom) and allow water to run until all the pipes are full
and all the air has escaped from the system.
8.3 Starting the controller
See separate controller documentation.
