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Connecting the heat pump to the heating system
What the delivery includes
The following components are included in the delivery of the heat pump:
Filling the heating system
1. Open and close the link between the cold water system and the
heating system in short time intervals.
2. Vent the system and fill to the correct pressure.
Filling the heat transfer fluid in the collector
hose
The collector hose is filled with heat transfer fluid to be able to collect
heat from the ground. The fluid is a mixture of water and anti-freeze. It
should have a freezing point of approximately -15ºC.
Where this is not available, the system may be filled as follows:
System filling and de-aeration pump is available as an accessory.
Proceed as follows to fill the collector hose with heat transfer
fluid:
See the illustration on the next page.
1. Connect two hoses (1 inch in diameter) to both filling valves 1 and 2.
One of the hoses should have a submersible pump connected at the
other end. The pump must be submersible with a minimum delivery
pressure of 450 kPa. Minimum flow: 4 m³/h, type Wilo-Sub TWU 5-
SE. The submerged pump should be fitted with a filter.
2. Place the hose and submersible pump in a barrel that holds 100
litres. Eye protection and gloves should be worn during filling of the
system and handling of antifreeze.
3. Fill the barrel with heat transfer fluid. The relation between water
and heat transfer fluid can be found in the tables 1 and 2. Pour water
into the container before anti-freeze liquid. Before starting up the
pump, mix the anti-freeze liquid in the tank to ensure a uniform mix.
4. Open valves 1 and 2 and close valve 3.
Repeat points 5-8 for each circuit where applicable. The other circuits
must be closed.
5. Start the submerged pump. The circuit is automatically filled with
heat transfer fluid.
6. When the fluid level has dropped to 50 per cent in the barrel, stop the
submerged pump and fill the barrel with more anti-freeze mixture.
Valve with filter
Quantity: 1
Rubber feet
Quantity: 4
Outdoor sensor
T2 (GT2) with
cable
Quantity: 1
Room sensor
T5 (GT5):
Quantity: 1
Return sensor
T1 (GT1)
Quantity: 1
Cable: 4 m
Safety valve
Quantity: 1
Circlip pliers
Quantity: 1
Drain plug
Quantity: 1
GT3
Cylinder
sensor
Quantity: 1
The first litres from the return pipe
are often contaminated. Therefore
collect these litres in a separate tank.
Manual
Quantity: 1
What the delivery includes
Note
TECHNICAL INFORMA
TION
FOR THE USER
FOR THE INST
ALLER
TECHNICAL INFORMA
TION
FOR THE USER
FOR THE INST
ALLER