13. Stop the brine pump in the control computer menu SERVICE -> MANUAL TEST -> BRINEPUMP, set the value
to 0, at the same time leave the external pump running.
14. Open valve (4) with the external pump running to eliminate the air between the valves (3) and (5).
15. Close valve (3) and pressurise the system using the external pump.
Caution! Max 150kpa (1.5 bar)
16. Close valve (5).
17. For DHP-A, DHP-AL: close the defroster shunt in the control computer menu SERVICE -> MANUAL TEST ->
SHUNT DEFR, set the value to 0.
18. Stop the external pump (11) and disconnect the filling equipment.
19. Install insulation on the filler cock.
10.4 Bleed the brine circuit
Note! When topping up, the brine pump must be running.
1. Start the brine pump in the control system's menu SERVICE -> MANUAL TEST -> BRINEPUMP, set the value
to 1.
2. Check that the level in the bleed tank (9) is stabilised.
3. Dismantle the safety valve (8) on the bleed tank.
4. Top up with brine to 2/3 of the tank through the connection on which the safety valve (8) was installed.
5. Leave the brine pump running so that that the air in the system collects in the bleed tank.
6. As air separates in the bleed tank the fluid level drops, top up as in step 4.
7. Reinstall the valve (8) when all air has been removed from the system.
8. Open valve (8) and release any overpressure. The fluid level should not fall below 2/3 of the height of the
tank.
9. Check that valve (3) is closed.
10. Stop the brine pump in the control system's menu SERVICE -> MANUAL TEST -> BRINEPUMP, set the value
to 0.
11. Switch to the desired operating mode if the heating system has been filled and bled.
Collect any excess brine in a plastic container for topping up the system if necessary (leave it with the customer).
10.5 Bleed the outdoor unit
If the outdoor unit is installed higher than the heat pump with a pressurised brine system, the outdoor unit must
be bled using the bleed screws (1) on the connection pipes. The side covers of the outdoor unit must be removed
to access the bleed screws.
Installation instructions VMBMA1002 – 65
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