Technical data

5.1.6 Reassembling the Heat Pump

i. Ensure all tools and materials are removed from the inside of the unit.

ii. Reposition the front cover

iii. Using the 4 x 5mm hex socket screws secure the front cover in place.

5.1 .5 Heating distribution and load side purging

i. Find the cold fill for the heating system and open the valve on the heating system to allow water

into the heating system and the Compact.

ii. Follow the manufacturer’s procedures for purging the heating system.

iii. For any systems that involves cooling, antifreeze (approximately 20%) must be added to the

distribution load side.

iv. Remove the cap from the heating pump bleed port and depress the Schrader valve using a small

screw driver, as shown in the illustration (below).

Heating distribution

Schrader valve

Fig 28 Location of

Heat Pump Schrader

Valves

v. Alternatively, the Schrader valve core can be unscrewed completely using a car valve core remover

and a 10 mm internal diameter plastic pipe placed on the outside of the valve to allow any water or

air to be vented into a bucket.

vi.

When a constant stream of water comes from the valve the pump will have been bled. This

procedure needs to be repeated at intervals during the commissioning procedure if there is any air

in the heating system. Place the cap back on the bleed valve.

We recommend a central heating inhibitor is added to the heating water in the heating distribution circuit.

Ground side Schrader

valve