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.
54
7
1
2
3
6
8
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

3 Operating instructions
3.1 Control panel
3.1.1 Function description
The heat pump has an integrated control system which automatically cal-
culates the heat demand in the house to ensure that the correct amount
of heat is produced and emitted where necessary. There are many differ-
ent values (parameters), which are required in order to do the calculation
of the heat demand.
Duringinstallation and service, the control panelisused to set and change
values that have to be adapted according to the house demand. The con-
trol panel is integrated into the front of the heat pump and consists of a
display, a keypad and an indicator. In the display, a simple menu system
is used to navigate the desired settings and values. During operation, the
User manual VUIFM102 – 9

display always shows the set ROOM value, the operating mode and the
status of the heat pump.
3
2
1
ROOM
NO HEAT DEMAND
OPERAT. AUTO
20°C
(20°C)
Figure 2. Display, keypad and indicator.
Position Description
1The display text and symbols are only shown as examples. Certain
symbols cannot be displayed at the same time.
2 Keypad:
+ Plus sign used to scroll up a menu or increase the values.
- Minus sign used to scroll down a menu or reduce the values.
> Right arrow used to select a value or open a menu.
< Left arrow to cancel selection or exit a menu.
3 Indicator
The control system is operated via a user-friendly menu system, which is
shown in the display. Use the keypad’s four navigation symbols to navi-
gate the menus and increase or reduce the set values.
The INFORMATION menu is opened by pressing the left or right buttons.
The INFORMATION menu has a number of sub menus, see Menyinforma-
tion.
10 – User manual VUIFM102

For installation and service, the SERVICE menu is used, which is opened
by pressing the left button for five seconds. The SERVICE menu has a
number of sub menus, see Menu information.
The INFORMATION and SERVICE menus are intended for two categories
of user, customers and installers. Customers may only open the INFOR-
MATIONmenu with a limited number of settings. Installers have to beable
to change many settings in the control settings. The SERVICE menu is
therefore hidden from the customers.
12
Figure 3. The menus are reached by pressing different buttons.
Position Description
1 Information menu
Press the left or right buttons.
2 Service menu
Press and hold the left button for at least five seconds
The indicator at the bottom of the control panel has three modes:
•Not lit, means that the heat pump is not powered.
•When the light shines continuously, the heat pump has power and is
ready to produce heat or hot water.
•Flashing, means an active alarm
Caution! During a service that consists of replacing the display
card, all heat pump settings are reset to factory settings.
Therefore note current settings before replacement.
User manual VUIFM102 – 11

3.1.2 Display
The display shows information about the heat pump’s operation, status
and any alarms, in text form. Operating mode and status, indicated by
symbols, are also shown in the lower part which shows the heat pump’s
active processes.
Note! To change the display language, press the following
sequence of buttons: right arrow, arrow down to bottom menu,
arrow right, scroll between languages using + or -. Then select
language using right arrow.
3.1.2.1 Operating modes
Table 1. Shows the set operating mode of the heat pump.
Operating
mode
Meaning
(OFF) The installation is fully switched off. This mode is also used
to acknowledge certain alarms.
Caution! If the operating mode OFF is to be
used for long periods during the winter, the
water in the heating system in the heating
system must be drained, otherwise there is a
risk of frost damage.
AUTO The heat pump and the auxiliary heater are automatically
controlled by the control system.
HEAT PUMP The control system is controlled so that only the heat pump
unit (compressor) is allowed to operate. In this operating
mode peak heating charging (anti-legionella function) of
the hot water will not run because the auxiliary heater is not
used.
12 – User manual VUIFM102

Operating
mode
Meaning
AUX. HEATER The control system only permits the auxiliary heater to be
in operation.
HOT WATER In this mode the heat pump only produces hot water, no
heat goes to the heating system.
3.1.2.2 Symbols
Table 2. Symbols shown in the display.
Symbol Meaning
HP Indicates that the compressor is in operation.
1LIGHT
NING Indicates that the auxiliary heater is in operation. The number indicates what additional step is activated.
HOUS
EIndicates that the heat pump produces heat for the heating sys- tem.
TAP Indicatesthat the heat pump produces heat for the waterheater.
F FLOW
SEN-
SOR
An F indicates that a flow sensor is installed.
CLOC
KIndicates that tariff control is active.
TANK Indicates the level of hot water in the water heater. When hot
water is produced for the water heater, this is indicated by a
flashing icon for the tank. A lightning symbol by the symbol
indicates peak heating charging (anti-legionella function).
SQUA
RE Eitherindicatesthattheoperatingpressureswitchhasdeployed, or that the pressure pipe temperature has reached its maximum
temperature.
User manual VUIFM102 – 13

3.1.2.3 Operational information
Table 3. Shows information about the heat pump.
Message Meaning
ROOM Shows the set ROOM value. Standard value: 20°C.
If the accessory room sensor is installed it shows the
actual temperature and the desired indoor temperature
is shown within brackets.
START Indicatesthat there is a need for heat production and that
the heat pump will start.
EVU STOP Indicates that the additional function EVU is active. This
means that the heat pump is off as long as EVU is active.
NO HEAT DEMAND Indicates that there is no heating production demand.
HEAT PUMP START --
XX Indicates that there is a heating production demand and will start in XX number of minutes.
HEAT PUMP+AUX.
HEAT Indicates that heat production is active with both com- pressor and auxiliary heater.
AUX. HEATER Indicates that there is an auxiliary heater demand.
3.2 Checking the coolant circuit pressure
The brine circuit must be filled with the correct amount of fluid otherwise
the installation may become damaged.
Ensure that system has the necessary pressure, however, not above max-
imum pressure of 6bar.
14 – User manual VUIFM102

See the installation instructions when filling brine.
1
2
Figure 4. Filling the brine
system
Symbol explanation
1 Used when filling
2 Connected to brine circuit
3.3 Checking the water level in the heating system
Thelinepressure oftheinstallationmustbecheckedonceamonth. Ensure
that heating system has the necessary pressure, however, not above max-
imum pressure of 6bar.
You can use normal tap water when topping up the heating system. In
certain exceptional cases the water quality may be so poor (for example
very hard water) that it is not suitable for filling the heating system. If
unsure, contact your installer.
Donotuseanyadditivesforwatertreatmentintheheatingsystem’swater!
3.4 Checking safety valves
Both the safety valves for the heating system must be checked at least
four times a year to prevent lime deposits clogging the mechanism.
The safety valve of the water tank protects the enclosed heater against
over pressure in the water tank. It is mounted on the cold water inlet line,
its outlet opening facing downwards. If the safety valve is not checked
User manual VUIFM102 – 15

regularly, the water tank might be damaged. It is quite normal that the
safety valve lets out small amounts of water when the water tank is being
charged, especially if a lot of hot water was used previously.
Both safety valves can be checked by turning the cap a quarter of a turn
clockwise until the valve lets out some water through the overflow pipe.
If a safety valve does not work properly, it must be replaced. Contact your
installer.
The opening pressure of the safety valves is not adjustable.
3.5 In the event of leakage
In the event of leakage in the hot water pipes between the unit and water
taps, close the shut-off valve on the cold water inlet immediately. Contact
your installer, see References, Page 28.
In the event of leakage in the brine circuit, turn off the heat pump and call
your installer immediately, see References, Page 28.
16 – User manual VUIFM102

4 Menu information
4.1 INFORMATION menu
Open the menu by pressing the left or right button. The menu also shows
history and operating times.
Menus in italics are only visible if the expansion card (accessory) is instal-
led.
Table 4. Used to change the heat pump's operating modes and to adjust
the heat curve.
Menu Sub menu Sub menu Sub menu
INFORMATION
OPERAT.
Ø CANCEL
Ø
AUTO
HEAT PUMP
AUX. HEATER (must
be activated)
HOT WATER (must be
activated)
MANUAL TEST
HEAT CURVE
CURVE
MIN
MAX
CURVE 5
CURVE 0
CURVE -5
HEAT STOP
REDUCTION
TANK TEMP (if buffer tank is activated)
OVERCHARGE (if buffer tank is activated)
ROOM FACTOR (if a room sensor is installed)
POOL (expansion card)
POOL HYSTERESIS (expansion card)
HEAT CURVE 2 (if shunt group is activated)
User manual VUIFM102 – 17

Menu Sub menu Sub menu Sub menu
CURVE
MIN
MAX
TEMPERATURE
OUTDOOR
ROOM (if a room sensor is installed)
SYSTEM SUPPLY (if buffer tank is activated)
SUPPLY LINE
RETURN LINE
BUFFER TANK (must be activated)
HOT WATER (must be activated)
INTEGRAL
BRINE IN
BRINE OUT
POOL (expansion card)
COOLING
SHUNT GROUP (must be activated)
2ND HEAT CIR.
CURRENT (expansion card)
OPERAT. TIME
HEAT PUMP
AUX. HEAT 1
AUX. HEAT 2
AUX. HEAT 3
HOT WATER (must be activated)
COOLING
ACT COOLING
LANGUAGE
SVENSKA
ENGLISH
DEUTSCH
NEDERLANDS
FRANÇIS
ESPAÑOL
ITALIANO
NORSK
DANSK
SUOMI
EESTI
POLSKI
ČEŠTINA
18 – User manual VUIFM102