Danfoss DHP-S Eco User manual

User manual
DHP-S&DP
VUIFM102

If these instructions are not followed during
installation and service, Danfoss A/Sliability
according to the applicable warranty is not
binding. Danfoss A/S retains the right to
make changes to components and specifi-
cations without prior notice.
© 2010 Copyright Danfoss A/S.
TheSwedishlanguageisusedfortheoriginal
instructions. Other languages are a transla-
tion of original instructions.
(Directive 2006/42/EG)

Contents
1 Important information......................................................................................................................... 3
1.1 Safety precautions................................................................................................................................... 4
1.2 Protection.................................................................................................................................................... 5
2 About your heat pump........................................................................................................................ 6
2.1 Product description................................................................................................................................. 6
2.2 The principles of the heat pump........................................................................................................ 6
2.3 Hot water tank (option).......................................................................................................................... 8
2.4 Room sensor (option)............................................................................................................................. 8
3 Operating instructions......................................................................................................................... 9
3.1 Control panel............................................................................................................................................. 9
3.2 Checking the coolant circuit pressure............................................................................................ 14
3.3 Checking the water level in the heating system........................................................................ 15
3.4 Checking safety valves......................................................................................................................... 15
3.5 In the event of leakage......................................................................................................................... 16
4 Menu information............................................................................................................................... 17
4.1 INFORMATION menu............................................................................................................................ 17
5 Troubleshooting.................................................................................................................................. 25
5.1 Alarm.......................................................................................................................................................... 25
6 Terms and abbreviations.................................................................................................................. 26
7 References............................................................................................................................................. 28
VUIFM102 – 1

1 Important information
Note! If the installation is not used during the winter, the heating
system must be drained of water, otherwise there is a risk of frost
damage to the installation.
The system can be considered maintenance free but certain checks are
necessary.
Before changing the control computer’s settings, first find out what these
changes mean.
Contact your installer for any service work.
Caution! This apparatus is not intended for persons (including
children) with reduced physical, sensory or psychological
capacity, or who do not have knowledge or experience, unless
supervised or they have received instructions on how the
apparatus functions from a safety qualified person.
Note! Children are not permitted to play with the apparatus.
User manual VUIFM102 – 3

1.1 Safety precautions
1.1.1 Installation and maintenance
DANGER! Only authorized installers may install, operate and
carry out maintenance and repair work on the heat pump.
DANGER! Only authorized electricians may modify the electrical
installation.
DANGER! DANGER TO LIFE! Only authorized refrigeration
technicians may work on the refrigerant circuit.
1.1.2 System modifications
Only authorized installers may carry out modifications on the following
components:
•The heat pump unit
•The pipes for the refrigerant, brine, water and power
•The safety valve
Do not carry out construction installations that may affect the operational
safety of the heat pump.
1.1.3 Safety valve
The following safety precautions apply to the hot water circuit’s safety
valve with corresponding overflow pipe:
•Never block the connection to the safety valve’s overflow pipe.
•Water expands when it is heated, this means that a small amount of
water is released from the system via the overflow pipe. The water
that exits the overflow pipe can be hot! Therefore, allow it to flow to
a floor drain where there is no risk of burning yourself.
4 – User manual VUIFM102

1.2 Protection
1.2.1 Corrosion Protection
Due to the risk of corrosion, avoid using different types of sprays in the
vicinity of the heat pump. This particularly applies to:
•Solvents
•Chlorinated cleaning agents
•Paints
•Adhesives
User manual VUIFM102 – 5

2 About your heat pump
2.1 Product description
The heat pump is a heating system for heating and hot water if an external
water heater is installed (accessory). It has a compressor developed solely
for heat pumps.
The heat pump is equipped with control equipment which is presented
in a graphical display. The control equipment is also prepared for moni-
toring via the internet.
Heat enters the house via a water borne heating system. The heat pump
supplies as much of the heat demand as possible before auxiliary heating
is engaged and assists. Additional heater is an accessory.
The heat pump heating system consists of two basic units:
•Heat pump unit
•Control equipment
The heat pump unit consists of the following components:
•Scroll compressor
•Stainless steel heat exchanger: condenser, evaporator and de-super-
heater
•Circulation pumps for collector- and heating system
The control equipment controls the components included in the heating
installation (compressor, circulation pumps and exchange valve) and
determines when to start and stop the pump as well as producing heat
for the house or hot water. If the additional heat (accessory) is installed
the additional heating is controlled by the control equipment. The control
equipment unit consists of the following components:
•Control computer, as well as operator’s panel with graphical display
•Temperature sensors (outdoor, supply line, return line and hot water)
•Room sensor (option)
2.2 The principles of the heat pump
A heat pump utilises the energy found in a natural heat source. Simply
put, it obtains energy in the form of heat from a heat source.
6 – User manual VUIFM102

The heat pump is, therefore, a very environmentally friendly and eco-
nomical way of heating a house.
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2
3
6
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Figure 1. The principles of the heat pump
The heat pump has four separate fluid circuits
•Brinecircuit(1)–isafluid(brine)filledhoseloweredintoalake,buried
in the ground or lowered into bedrock. The brine obtains energy from
the surroundings by the fluid temperature in the hose being heated
a few degrees.
•Refrigerant circuit (7) – is a circuit in the heat pump that through
evaporation, compression and condensation takes energy from the
brine circuit and supplies it to the heat transfer fluid circuit. The refrig-
erant is chlorine free.
User manual VUIFM102 – 7

•Heat transfer fluid circuit (8) – is the water that transports the heat/
energy to the heating system and the hot water tank.
•Hotgascircuit–isahightemperaturecircuitforthehotwatercircuit’s
final heater. If the heat pump is not connected to any water heaters,
the hot gas circuit does not need to be connected.
1. The brine circuit (1) evaporates the refrigerant in the evaporator
(2), using heat from lake, ground or rock. The refrigerant is turned
to gas.
2. The refrigerant passes the compressor (3) where the pressure and
temperature are raised.
3. The refrigerant then continues to the de-superheater (4). Here a
small high temperature output is used, for example, to top up the
hot water temperature.
4. Theheattransferfluidcircuit(hotgascircuit)condensesrefrigerant
to liquid form in the condensor (5), by giving off heat to the house
and hot water.
5. The refrigerant then passes through the expansion valve (6) where
the pressure and temperature drop and converts the refrigerant
from liquid to liquid and gas. The process then starts again.
2.3 Hot water tank (option)
The heat pump can also produce hot water for an external water heater.
The water temperature of the hot water tank is controlled by the control
switch and cannot be adjusted.
Hotwater production stops when the controlswitch reaches its maximum
operating pressure.
2.4 Room sensor (option)
The heat pump system can be equipped with a room sensor as an option.
Only authorised electricians may carry out the installation.
See wiring diagram for connections.
8 – User manual VUIFM102