Manual

0020096321_00 - 07/10 - Glow-worm
- 28 -
INSTALLATION
• Using a fl at wrench (2), open the trap (1) a ¼ turn in order to
remove the air present in the glycol circuit, then close it quickly
(in order to avoid emptying the circuit).
The venting process is carried out for 15 minutes.
• Repeat this last operation at the end of the venting procedure.
• Press the button
.
b
The venting may result in a drop in the glycol
circuit pressure.
• Ensure that the glycol circuit pressure is between 1.5 and
2bars. If it not, top up the glycol circuit.
b
When venting is complete, make sure that the
various heating circuit air vent are open.
10.8.4 Adjustment of HP circuit fl ow
The heat pump is designed to operate with a minimum fl ow of
750 l / h. If the fl ow is less than 500 l / h, the heat pump will
stop and the heater resistance will begin to function. Heating
comfort will always be guaranteed, but energy saving will be
compromised.
The heat pump is equipped with a fl ow sensor and it is possible
to read the water fl ow directly via the control unit.
i
The HP circuit fl ow should be between 750 and 850 l / h.
i
Incorrect venting of the installation may lead to
variations in fl ow.
• Using the buttons ,
select HP circuit fl ow on the screen.
• Press the button
to confi rm.
• Using the button , launch the
reading of the heat pump circuit fl ow.
1
Key
1 Flow control valve
• Use the control valve (1) to adjust the fl ow of the HP circuit to
between 750 and 850 l/h.
i
If the domestic hot water cylinder option is installed on
the system:
• Refer to the chapter "Maintenance ► Control Unit
maintenance menu ► Domestic hot water cylinder
test" to demand a cynlinder heating.
• Check the PAC circuit fl ow rate on the control unit
screen (see chapter: "Component information ►
Heat pump ► Water exchanger ► Read PAC fl ow
rate") and check that it is above 750 l/h.
i
If you are unable to obtain a fl ow of between 750 and
850l/h using the fl ow control valve (1), change the
speed of the hydraulic pump module.
• Press the button
to stop the fl ow reading via the
control unit.
• Press the button
.
2
3
1
Key
1 Speed control
2 Speed I
3 Speed II (not applicable to this system)