Glow-worm Clearly Heat Pump 5 kW - Manual (Page 20)

0020111744_00 - 09/10 - Glow-worm
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INSTALLATION
13 Specifi c adjustment
13.1 Venting the HP circuit
The venting of the HP circuit allows you to purge any air in the
HP circuit.
Ø14
A
B
1
3
4
1
2
Key
1 Air
trap
2 Ø 14 mm fl at wrench (*)
3 Hose
4 Container
(*)
(*) Not included
• Connect one end of the hose (3) to the trap (1).
• Insert the other end of the hose (3) into the container (4) in
order to recover any residual glycol during the venting of the
circuit
• Begin the venting process with the control unit.
• 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).
• Repeat this last operation at the end of the venting procedure.
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.
13.2 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 boiler 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.
• If you are unable to obtain a fl ow of between 750 and 850l/h
using the fl ow control valve of the hydraulic module, change
the speed of the heat pump module.
2
3
1
Key
1 Speed
control
2 Speed I
3 Speed II (not applicable to this system)
Available pressure in the heat pump circuit
60
50
40
30
20
10
0 300 600 900 1200
B
1 2
Key
1
With the water circuit at 20 ° C
2 With a brine water circuit (a mixture of 30%) at 20 ° C
A Available pressure (kPa)
B circuit fl ow rate (l/h)