Auxiliary Heating, Dhp-H, Dhp-L, Dhp-C; Auxiliary Heating, Dhp-A; Water Heater, Dhp-H, Dhp-C - Danfoss DHP-H Installation And Service Instructions Manual

• Circulation pumps for brine and heating systems
• Valves and safety equipment for cooling systems and corresponding electrical components.
2 Water heater
• 180 litres
• Internal anti-corrosion protection with copper or stainless steel
• It does not have an anode, which makes it maintenance free
3 Exchange valve
• The heated water either passes through to the heating system or to the water heater depending on whether heating or hot water is
to be produced
4 Auxiliary heat
• 9 kW electric heating element (4.5 kW at 230 V heat pump installation)
• Electric heating element control in maximum of three steps (5 steps for DHP-A)
• Installed on the heating system's supply pipe
• Covers the demand of extra energy if the heat pump's capacity is exceeded
• Automatically connected in the heat pump unit if operating mode AUTO is selected.
5 Control equipment
• Control computer with graphic display
• Temperature sensors (outdoor, supply pipe, return pipe, brine and hot water)
• Room sensor (option)
The control equipment controls the heat pup unit's included components (compressor, circulation pumps, auxiliary heaters and exchange
valve) and determines when to start and stop the pump as well as producing heat for the house or hot water.
11 .3 Auxiliary heating, DHP-H, DHP-L, DHP-C
If the heat demand is greater than the heat pump's capacity, the auxiliary heater engages automatically. The auxiliary heater is made up of
an electric heating element on the supply pipe that has two outputs, ADD.HEAT 1 and ADD.HEAT 2, and can be controlled in three steps.
For three phase, 400V, installations:
• Step 1 = ADD.HEAT 1 = 3 kW
• Step 2 = ADD.HEAT 2 = 6 kW
• Step 3 = ADD.HEAT 1 + ADD.HEAT 2 = 9 kW
For single phase, 230V, installations:
• Step 1 = ADD.HEAT 1 = 1.5 kW
• Step 2 = ADD.HEAT 2 = 3 kW
• Step 3 = ADD.HEAT 1 + ADD.HEAT 2 = 4.5 kW
In the event of an alarm, the auxiliary heater engages automatically.
11 .4 Auxiliary heating, DHP-A
The auxiliary heater is made up of an electric heating element on the supply pipe that has three outputs, ADD.HEAT 1, ADD.HEAT 2 and
ADD.HEAT 3, and can be controlled in five steps for three phase installations:
For three phase, 400V, installations:
• Step 1 = ADD.HEAT 1 = 3 kW
• Step 2 = ADD.HEAT 2 = 6 kW
• Step 3 = ADD.HEAT 1 + ADD.HEAT 2 = 9 kW
• Step 4 = ADD.HEAT 2 + ADD.HEAT 3 = 12 kW
• Step 5 = ADD.HEAT 1 + ADD.HEAT 2 + ADD.HEAT 3 = 15 kW
For single phase, 230V, installations:
• Step 1 = ADD.HEAT 1 = 1.5 kW
• Step 2 = ADD.HEAT 2 = 3 kW
• Step 3 = ADD.HEAT 1 + ADD.HEAT 2 = 4.5 kW
In the event of an alarm, the auxiliary heater engages automatically.
11 .5 Water heater, DHP-H, DHP-C
Danfoss heat pumps DHP-H, DHP-C, are supplied with an integrated 180 litre water heater.
The temperature of the hot water cannot be adjusted. Hot water production does not cease at a determined temperature but when the
operating pressure switch reaches its maximum operating pressure, which corresponds to a hot water temperature of approximately 50-
55°C.
Using a regular time interval, the water in the water heater is heated to 60°C to prevent the build up of bacteria (legionella function). The
factory set time interval is seven days.
Hot water production is prioritised ahead of heat production, i.e. no heat is produced if there is a hot water demand.
VMBMA102
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