Danfoss A/S is not liable or bound by warranty if these
instructions are not adhered to during installation or service.
The English language is used for the original instructions.
Other languages are a translation of the original instructions.
(Directive 2006/42/EC)
© 2012 Copyright Danfoss A/S
Table of Contents
1 Electrical Heating Surfaces .......................................................... 3
1.1 Electrical pre-heating surfaces ..................................................... 3
1.2 Electrical after heating surfaces .................................................... 4
1.3 Placing an electrical heating surface ................................................. 4
1.4 Connecting an electrical heating surface .............................................. 4
1.5 Overview - System with one heating surface ............................................ 5
1.6 Overview - System with two heating surfaces ........................................... 6
1.7 Troubleshooting .............................................................. 7
2 Waterborne Heating Surfaces ........................................................ 7
2.1 Waterborne after heating surfaces .................................................. 7
2.2 Placing a waterborne heating surface ................................................ 8
2.3 Connecting a waterborne heating surface ............................................. 8
2.4 Call for Heating .............................................................. 9
2.5 Troubleshooting .............................................................. 10
3 Geothermal Heating Surfaces ........................................................ 11
3.1 Geothermal heating surfaces ...................................................... 11
3.2 Dimensioning of ground collectors .................................................. 11
3.3 Laying ground collectors ........................................................ 12
3.4 Filling with brine .............................................................. 12
3.5 Placing a geothermal heating surface ................................................ 13
3.6 Connecting a geothermal heating surface ............................................. 13
3.7 Troubleshooting .............................................................. 14
4 Technical Data .................................................................. 15
4.1 Electrical heating surfaces ........................................................ 15
4.2 Waterborne heating surfaces ...................................................... 16
4.3 Geothermal heating surfaces ...................................................... 17
1 Electrical Heating Surfaces
1.1 Electrical pre-heating surfaces
An electrical pre-heating surface is used to keep the Air system temperature above the freezing point.
Air systems without pre-heating will gradually reduce the air intake volume during long term operation at outside temperatures below
-3°C in order to prevent freezing. In a standard house this is an excellent solution, but in airtight buildings (typical low-energy construc-
tions), the imbalance can cause a non-desirable negative pressure inside the house. Installing a pre-heating surface is therefore recom-
mended here.
The electrical pre-heating surface is built into the duct system on the outdoor air side.
A:
Extract air.
50 cm 50 cm
230V, 50 Hz
A
B
C
D
EF
G
H
I
J
K
B: Supply air.
C: Outdoor air.
D: Exhaust air.
E: Sensor before heating surface.
F: Sensor after heating surface.
G: Supply cable to heating surface
H: Supply cable to automatic function.
I: Communication cable HRV unit -> external controller.
J: Post-heating (to be insulated with 50 mm glass/mineral wool).
K: External controller (must not be insulated).
Note! The electrical heating surface must be installed by a certified electrician.
Installation Guide Danfoss Air Heating Surfaces
Danfoss Heating Solutions VIFKB502
3
1.2 Electrical after heating surfaces
An electrical after heating surface is used to slightly raise the supply air temperature to prevent discomfort in the room.
The electrical after heating surface is built into the duct system on the supply side.
A: Extract air.
50 cm
50 cm
230V, 50 Hz
A
B
C
D
E
F
G
H
I
J
K
B: Supply air.
C: Outdoor air.
D: Exhaust air.
E: Sensor before heating surface.
F: Sensor after heating surface.
G: Supply cable to heating surface
H: Supply cable to automatic function.
I: Communication cable HRV unit -> external controller.
J: Post-heating (to be insulated with 50 mm glass/mineral wool).
K: External controller (must not be insulated).
Note! The electrical heating surface must be installed by a certified electrician.
1.3 Placing an electrical heating surface
The heating surface must be placed at a minimum distance of 2 x the diameter of the duct size to the nearest obstacle (pipe bends,
external filters or unit).
An arrow on the heating surface indicates the air flow direction.
The heating surface must be placed at least 30 mm from any wooden building components.
The connection box should face upwards or horizontally - never downwards.
The heating surface must be insulated with non-flammable insulating material. The cover of the surface’s external controller must NOT
be insulated, but must remain visible so that the manual over-heating protection can be deactivated if this is triggered unexpectedly.
The two factory mounted PT-1000 sensors must be placed in the duct system 50 cm in front of and 50 cm behind the surface. Each
sensor is marked if it should be placed before or after surface. If the sensors face the wrong way, the required operations cannot be
achieved.
Drill Ø8 mm holes in the duct and install the supplied rubber grommets, then place the sensors into the duct. Fix the sensors to the pipe
with duct tape and insulate together with the rest of the duct system and heating surface.
min. 2 x A mm
A mm
min. 2 x A mm
45 mm
Rubber sleeve
Insulation
PT-1000 sensor
1.4
Connecting an electrical heating surface
The mains lead from the supplied external controller (marked “supply voltage 230 V, 50 Hz”) is connected to the mains power, using a
suitable junction box. We recommend that the heating surfaces be supplied from a separate group.
The power cable from the external controller (marked “to heating surface”) is connected to the electrical heating surface, cf. electrical
diagram.
The supply cable for the heating surface is fed through the pre-punched holes in the heating surface junction box. A cable gland must
be used to provide strain relief.
The communication cable is mounted between the external controller and the ventilation system’s serial input (also see the following
pages).
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Danfoss Air Heating Surfaces
VIFKB502 Danfoss Heating Solutions
4
1. PT 1000 sensor, behind surface (control sensor).
Solid state relæ
3 4 5 6
Gråt modbus stik, set
fra tilslutningsside
20 21
N L PE
+
-
2
1
24 26
N
L1
PE
Klemme 1: Orange
Klemme 2: Blå (+modstand)
Klemme 3: Hvid/blå (+modstand)
Klemme 4: Tom
OBS:
120 Ohms modstand
mellem klemme 2 & 3
2. PT 1000 sensor in front of the surface.
3. Communication cable between the HRV unit and mounting
case (10 m, twisted pair, 2 pairs + display).
4. The power cable, 230 V, 50 Hz, should be connected to a sepa-
rate 10 A group (3 m, 3G1.5).
5. Heating surface connection (3 m 3G1.5).
6. Over-heating thermostat with automatic re-closure (70°C).
7. The over-heating thermostat with manual closure (120°C).
8. Element.
Note! The control box must not be insulated.
1.5 Overview - System with one heating surface
1. Unit.
2. Heating surface controller.
3. CCM module.
4. Air Dial.
5. Serial cable, heating surface controller / unit.
6. Serial cable, CCM module / unit.
Mounting sequence - carried out on the serial socket in the unit
1.
Twist together in pairs the serial
cables with same colour.
2. Crimp-on ferrules are recom-
mended.
3. Insert the cable pairs into the
unit connector.
4. 1. White / Orange
1
2
3
4
5
6
2. Orange
3. Black
4. White / Blue
5. Blue
6. Remove jumper between ter-
minals 5 and 6
5. Insert the connector into the
unit. Within four minutes the Air
Dial will recognise the connec-
ted heating surface and auto-
matically register it with the sys-
tem.
New
device
found
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Danfoss Heating Solutions VIFKB502
5
1.6 Overview - System with two heating surfaces
1. Unit.
2. Heating surface 1 controller, without termination resistance.
3. Heating surface 2 controller, with termination resistance
4. CCM module.
5. Air Dial.
6. Serial cable, CCM module / unit.
7. Serial cable, controller 1 / unit.
8. Serial cable, controller 2 / controller 1.
Mounting sequence
1.
Heating surface external con-
troller 1 is mounted as shown in
chapter 1.5.
Remove the termination resist-
ance T on heating surface 1.
2. Connect surface 1 to surface 2:
1. Orange / Orange
2. Blue / Blue
3. White-Blue / White-Blue
4. Empty
3. 1. White / Orange
1
2
3
4
5
6
2. Orange
3. Black
4. White / Blue
5. Blue
6. Remove jumper between ter-
minals 5 and 6
4. Insert the connector into the
unit. Within four minutes the Air
Dial will recognise the connec-
ted heating surface and auto-
matically register it with the sys-
tem.
New
device
found
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VIFKB502 Danfoss Heating Solutions
6
1.7 Troubleshooting
Error indication Reason Solution
The surface does not automatically
register, when connecting power to
the control.
When a surface is connected, it can
take up to four minutes before it is
included in the network.
Wait four minutes and check the Air Dial, if any new units have been add-
ed to the system.
A communication cable has not
been connected correctly.
Check if communication cables are mounted correctly and the colour co-
des between the individual cables are according to this guide.
The termination resistance is not
correctly positioned for the last unit
in the chain.
Make sure that a termination resistance is mounted only on the last unit
in the system.
The surface cuts out because of the
over-heating protection.
Flow across the surface is too low. Check for air passages in the system. This type of fault is often due to insu-
lation material residue in the duct system. Once the fault has been found
and corrected, the heating surface’s over-heating protection is re-set
manually. This is done using the red button on the top of the heating sur-
face. Power to the actual ventilation system is then switched off briefly,
after which operations can be re-started.
Duct sensors mounted incorrectly/
wrong way round.
Check the label on the temperature sensors; sensor labels show where
the sensor should be placed in the system in relation to the heating sur-
face.
A component in the duct system is
mounted too close to the heating
surface (bend, filter, reduction, etc.).
The component that is disrupting the airflow across the surface must be
moved so that the heating surface is covered evenly.
Fuses blown in main power supply The phase is overloaded. Supply the heating surface from a separate 10A fused group.
Unpleasant draughts/smells Dust coating on the heating surface It can be expected, that an electrical heating surface will give off a “slight-
ly burnt smell” when first used (or after a long period where it has not
been in use). This is a short-term issue and will disappear in a short time.
The smell is due to small particles of dust on the surface of the heating
surface getting hot.
The surface does not give off any
heat
The surface’s over-heating protec-
tion has been triggered.
Check for any foreign objects in the duct system. Once you have found
and corrected the fault, the heating surface’s over-heating protection
must be re-set manually, which is done using the red button on the top of
the heating surface. Power to the actual ventilation system will then be
disconnected briefly, after which operation can be re-started.
The fuses in the surface’s supply
group have blown.
Change the fuses.
2 Waterborne Heating Surfaces
2.1 Waterborne after heating surfaces
Waterborne after heating surfaces are installed in the supply air side of the duct system. They are used to raise the supply air tempera-
ture in order to prevent cold draughts, where air is taken in.
The waterborne heating surface is connected to the building’s central heating system with both supply and return. The heating surface
has a built-in protection against frost burst.
A:
Extract air.
+
A
B
C
D
E
F
B: Supply air.
C: Outdoor air.
D: Exhaust air.
E: Sensor before heating surface.
F: Sensor after heating surface.
Note! Supply and return to the surface must be insulated.
Installation Guide Danfoss Air Heating Surfaces
Danfoss Heating Solutions VIFKB502
7
2.2 Placing a waterborne heating surface
The heating surface must be placed at a minimum distance of 500 mm from any component in the duct system (pipe bends, external
filters or unit).
The heating surface is placed on the supply air side, after the ventilation unit.
An arrow on the heating surface indicates the air flow direction.
The heating surface is insulated on delivery and does not require any further insulation.
The heating surface is designed to be mounted horizontally, but can also be mounted vertically if the heating surface is adequately
supported, and if the direction of air flow is “upwards”.
The two factory mounted PT-1000 sensors must be placed in the duct system 50 cm in front of and 50 cm behind the surface. Each
sensor is marked if it should be placed before or after surface. If the sensors face the wrong way, the required operations cannot be
achieved.
Drill Ø8 mm holes in the duct and install the supplied rubber grommets,, then place the sensors into the duct. Fix the sensors to the pipe
with duct tape and insulate together with the rest of the duct system and heating surface.
45 mm
Rubber sleeve
Insulation
PT-1000 sensor
2.3
Connecting a waterborne heating surface
Connection to the central heating system
The waterborne heating surface is connected as shown in the below connection diagram.
On delivery, the water heating surface’s control valve is fully open and therefore ready for filling, even when switched off.
We recommend that you install a dirt trap in the system, and that the shut-off valves be mounted close to the surface to make any
subsequent servicing requirements easier.
An air-bleed screw must be mounted at the highest point in the system.
Fill the system with water and bleed out the air; the surface is then ready for use.
Supply and return to the surface should be insulated safely with regard to the frost bursting risk.
A:
Shut-off valves (recommended).
M
A
A
B
C
D
E
F
GH
I
J
230 V
50 Hz
B: PT 1000 sensors mounted in duct.
C: Air-bleeding screw (recommended).
D: Circulation pump (central heating system).
E: Expansion tank (normally part of the central heating system).
F: Any calls for heating are set up with a potential-free relay.
G: Heating surface.
H: Control valve with motor actuator.
I: Dirt trap.
J: Central heating system .
Note! Max. flow temp. 85°C, min. differential pressure 0.2 bar, max. differential pressure 4.0 bar, max. pressure level PN 10.
Electrical connection
Once the water heating surface has been filled with water and bled of air, it must be connected electrically.
This is done by connecting the supplied power plug to the heating surface and connecting the supplied communication cable between
the water heating surface and the ventilation system.
1. Unit.
2. Waterborne heating surface.
3. CCM module.
4. Air Dial.
5. Serial cable, heating surface / unit.
6. Serial cable, CCM module / unit.
230 V
50 Hz
Installation Guide Danfoss Air Heating Surfaces
VIFKB502 Danfoss Heating Solutions
8
Mounting sequence - carried out on the serial socket in the unit
1. Twist together in pairs the serial
cables with same colour.
2. Crimp-on ferrules are recom-
mended.
3. Insert the cable pairs into the
unit connector.
4. 1. White / Orange
1
2
3
4
5
6
2. Orange
3. Black
4. White / Blue
5. Blue
6. Remove jumper between ter-
minals 5 and 6
5. Insert the connector into the
unit. Within four minutes the Air
Dial will recognise the connec-
ted heating surface and auto-
matically register it with the sys-
tem.
New
device
found
6. Select which surface must be
used, “Comfort” (constant intake
temperature, usually recom-
mended) or “Total heating”.
Comfort
2.4 Call for Heating
If the central heating system is fitted with weather compensation, it may be advisable to set up a potential-free “call for heating”.
The call for heating is set up from the heating surface’s control to the central heating system through a supplementary relay (the con-
trol’s relay output is not potential-free, and must therefore be taken over an external relay).
The heating surface control is located behind the steel plate on the front of the heating surface.
A: Modbus.
+
-
2
1
27 28
A
B
C
NO
230 V
D
E
B: “Call for heating” clamp 27/28 230 V, 4 A (not potential-free).
C: Solid state relay.
D: External supplementary relay, e.g. Hager 110 ES (not included
in the Danfoss delivery).
E: Clamps for external calls for heating in the central system.
Note! The electrical heating surface must be installed by a certified electri-
cian.
Installation Guide Danfoss Air Heating Surfaces
Danfoss Heating Solutions VIFKB502
9
2.5 Troubleshooting
Error indication Reason Solution
The surface does not automatically
register, when connecting power to
the control.
When a surface is connected, it can
take up to four minutes before it is
included in the network.
Wait four minutes and check the Air Dial, if any new units have been add-
ed to the system.
A communication cable has not
been connected correctly.
Check if communication cables are mounted correctly and the colour co-
des between the individual cables are according to this guide.
The termination resistance is not
correctly positioned for the last unit
in the chain.
Make sure that a termination resistance is mounted only on the last unit
in the system.
The surface does not give off any
heat.
Air in the system. Bleed the system.
There is no hot water from the cen-
tral heating system.
Check the central heating system, and possibly set up a “Call for Heating”.
The dirt trap is clogged. Empty and clean the dirt trap; if necessary, flush the system.
Actuator fault. Disconnect the actuator and replace with a new (Danfoss AMV 130, no.
082H8037).
The first time this is connected it
could take up to 20 minutes before
the valve and the actuator are ready
for operation.
Wait for 20-30 minutes until both valve and actuator are ready for opera-
tion.
The control is not calling for heat. The heating surface is not active, if the system is in Away Mode or if the
Bypass is activated.
Pump fault. Replace the circulation pump.
Air Dial issues a Frost Protection
Alarm.
Supply air coming out of the unit
has a temperature beneath +5°C,
before reaching the heating sur-
face.
Check that both valves are operational and that air is actually flowing over
both circuits. Low temperatures are usually due to an unintentional block-
age in the system’s duct system. Does the building’s central heating
work? If the room temperature falls too low, there is no energy for the sys-
tem to recover and this could also trigger a frost protection. Heat the sys-
tem again, turn off the alarm on the remote control and switch off power
to the ventilation system briefly; the system will then be ready for opera-
tion again.
Supply air is not warm enough. Flow temperature is too low. Heatpump installations normally operate at low supply temperatures.
You should always consider whether this is acceptable before trying to
raise the supply temperature (as this often results in worse/more expen-
sive operation of the central heating system).
Flow is set too low on the ABQM
valve.
The valve is supplied with a factory setting of 50% (max. flow = 75 l/h) If
this is not enough, e.g. due to large volumes of air combined with a low
supply temperature, the actuator can be removed (the union nut is ONLY
ever tightened by hand). You now have free access to the control valve,
which can be set to a higher value by pulling up the grey plastic collar
and then turning it. The current value can be read from the red indicator
line on the valve (100% = 150 l/h max. flow).
Flow is too low on the water side. Pressure loss to the surface is too great, or the circulation pump is run-
ning too low -> turn up the circulation pump and check that all possible
shut-off valves or other throttle organs are fully open.
The control is not calling for heat. The heating surface is not active if the system is in away mode, or if the
bypass is activated.
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VIFKB502 Danfoss Heating Solutions
10
3 Geothermal Heating Surfaces
3.1 Geothermal heating surfaces
A: Extract air.
+/-
A
B
C
D
E
F
G
H
1
H
2
I
J
K
L
M
N
O
P
Q
B: Supply air.
C: Exhaust air.
D: Communication cable.
E: Control.
F: Power supply to the circulation pump.
G: Outdoor air.
H1: Sensor T1.
H2: Sensor T2.
I: Pre-filter (accessory, recommended).
J: Condensate drain 3/8” RG A siphon must be mounted, e.g.
Danfoss Air water trap (accessory).
K: Shut-off valve, not supplied by Danfoss.
L: Expansion tank, not supplied by Danfoss.
M: Bleeding screw, not supplied by Danfoss.
N: Safety valve 2.5-3 bar, not supplied by Danfoss.
O: Brine filling kit DN 20, contains 2 x shut-off valves, filling and re-
turn connectors and dirt trap. Delivered complete and ready in-
sulated (accessory).
P: Circulation pump 400-800 l/h, not supplied by Danfoss.
Q: Ground pipe 80-200 m.
3.2 Dimensioning of ground collectors
Use the table to dimension the necessary pipe length for the in-
stallation. You will need to know the air volume and the soil type.
The sandier and drier the soil is, the less heat can be drawn from
the ground, which is why more pipes need to be laid in this type of
soil than in more normal (damper) soil. If you are in any doubt
about the type of soil you have, you should allow for sandy soil as
the extra cost of laying a couple of additional metres will not make
any significant difference to the total installation costs.
A: Dry sandy soil (15 W/m²)
B: Normal soil (20-30 W/m²)
Required pipe length
[m³/h]
B
[m]
A
200
175
150
125
100
75
50
25
0
0 50 100 150 200 250 300 350 400
Air volume
Installation Guide Danfoss Air Heating Surfaces
Danfoss Heating Solutions VIFKB502
11
3.3 Laying ground collectors
Before laying of ground heating pipes, make sure that all necessa-
ry permits are obtained from the local building authorities. Beware
of other underground installations, such as water pipes, electric
cables, gas pipes, sewage lines, etc.
Ground collector pipes to be used are Ø40 mm PEL. The pipes are
laid at a minimum depth of 1.5 m with a centre-to-centre distance
of 1 m.
The highest point of the ground collectors circuit must be next to
the building so the system can be bled efficiently.
Recommended brine: mixed with ethylene glycol or alternatively
IPA (spirit) for frost protection to a minimum of -20°C.
The illustration shows the laying of pipes in trenches:
▪
Centre-to-centre distance min. 1000 mm
▪
Depth min. 1500 mm
The pipes can also be laid in individual tracks (not shown).
When leading the ground collectors into the building it is impor-
tant that the last 1.5 m of ground pipe up to the building is insula-
ted with a porous insulation material (A).
The installation must be pressure tested by an authorised installer
before commissioning.
Note! Supply and return to the surface must be insulated!
100-300 mm
1500 mm
A
3.4 Filling with brine
The system should be rinsed and pressure tested with water, before it can be filled with brine. The system is then drained of water and
the selected brine is poured in.
We recommend that you assemble a filling kit for easy filling and possible draining of the system. Complete, pre-assembled kits can be
ordered from Danfoss under part no 086U6006 (DN 20).
The pump should be set to a flow between 400-600 l/h, depending on the length of pipe laid (the longer the pipe, the higher the flow).
Note! The pump will be powered from the cable from the actual heating surface (pre-mounted).
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Danfoss Air Heating Surfaces
VIFKB502 Danfoss Heating Solutions
12
3.5 Placing a geothermal heating surface
The heating surface must be placed at a minimum distance of 500 mm from any component in the duct system (pipe bends, external
filters or unit).
The heating surface is placed on the outdoor air side, before the ventilation unit.
The heating surface is insulated on delivery and does not require any further insulation.
Install a Danfoss filter box type FBDU before the geothermal surface to protect it from dirt.
An arrow on the heating surface indicates the air flow direction.
The heating surface must be mounted horizontally in relation to the condensate drain - check with a spirit level (ill.).
A siphon trap must be mounted to the condensate drain (ill.).
The two factory mounted PT-1000 sensors must be placed in the duct system 50 cm in front of and 50 cm behind the surface. Each
sensor is marked if it should be placed before or after surface. If the sensors face the wrong way, the required operations cannot be
achieved (ill.).
Drill Ø8 mm holes in the duct and install the supplied rubber grommets,, then place the sensors into the duct. Fix the sensors to the pipe
with duct tape and insulate together with the rest of the duct system and heating surface.
45 mm
Rubber sleeve
Insulation
PT-1000 sensor
The geothermal heating surface must be mounted
horizontally.
Siphon trap on condensate drain. Mounting of the PT-1000 sensors.
3.6 Connecting a geothermal heating surface
1. Unit.
2. Geothermal heating surface.
3. CCM module.
4. Air Dial.
5. Serial cable, heating surface / unit.
6. Serial cable, CCM module / unit.
7. To circulation pump.
230 V
50 Hz
Mounting sequence - carried out on the serial socket in the unit
1.
Twist together in pairs the serial
cables with same colour.
2. Crimp-on ferrules are recommen-
ded.
3. Insert the cable pairs into the unit
connector.
4. 1. White / Orange
1
2
3
4
5
6
2. Orange
3. Black
4. White / Blue
5. Blue
6. Remove jumper between termi-
nals 5 and 6
5. Insert the connector into the unit.
Within four minutes the Air Dial
will recognise the connected
heating surface and automatically
register it with the system.
New
device
found
Installation Guide Danfoss Air Heating Surfaces
Danfoss Heating Solutions VIFKB502
13
3.7 Troubleshooting
Error indication Reason Solution
The surface does not automatically
register, when connecting power to
the control.
When a surface is connected, it can
take up to four minutes before it is
included in the network.
Wait four minutes and check the Air Dial, if any new units have been add-
ed to the system.
A communication cable has not
been connected correctly.
Check if communication cables are mounted correctly and the colour co-
des between the individual cables are according to this guide.
The termination resistance is not
correctly positioned for the last unit
in the chain.
Make sure that a termination resistance is mounted only on the last unit
in the system.
The surface does not give off any
heat (winter operation) or does not
cool (summer operation).
Air in the system. Bleed the system.
Not enough brine is flowing
through the system.
Examine and clean any dirt traps in the system. Check that the pump is
running; if necessary turn up the pump.
The control is not calling for heat/
cooling.
The geothermal surface is normally active at outside temperatures below
freezing (pre-heating) and at high outside temperatures during the sum-
mer, when cooling is required. In the intervening periods the geothermal
surface is often not needed so the pump will not be active at these times.
Supply air is not cold enough (sum-
mer operations) ¹.
Air in the system. Bleed the system.
The flow the pump is supplying is
too low.
Check that any valves in the brine circuit are fully open, or turn up the
pump.
Poor/missing insulation of brine
pipes in the building and fresh-air
intake for the unit.
Insulate brine pipes and fresh-air intake to avoid losing cooling perform-
ance from the system.
¹ The expected intake air temperature on a summer’s day is around 14-17°C, depending on the length of piping and the soil conditions at the
groundworks.
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VIFKB502 Danfoss Heating Solutions
14
4 Technical Data
4.1 Electrical heating surfaces
Type Ø 125 mm Ø 160 mm Ø 250 mm
Connection, air Ø 125 mm Ø 160 mm Ø 250 mm
Box Galvanised steel plate Galvanised steel plate Galvanised steel plate
Max. output 900 W 1.500 W 2.100 W
Installation Horizontal / upwards Horizontal / upwards Horizontal / upwards
Safety thermostat
Double, built-in, automatic re-clo-
sure at 70°C, manual re-closure at
120°C
Double, built-in, automatic re-clo-
sure at 70°C, manual re-closure at
120°C
Double, built-in, automatic re-clo-
sure at 70°C, manual re-closure at
120°C
Weight 2.4 kg 3.2 kg 4.6 kg
Length 375 mm 375 mm 375 mm
Pressure loss curves for electrical heating surfaces
(both pre-heating and after heating surfaces)
Ø250
Ø125
Ø160
[Pa]
8
7
6
5
4
3
2
1
0
0 50 100 150 200 250 300 350 400 450 500 [m
3
/h]
Installation Guide Danfoss Air Heating Surfaces
Danfoss Heating Solutions VIFKB502
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4.2 Waterborne heating surfaces
Connection, air Ø 250 mm
Connection, water 3/8" RG, nipple
Box Highly insulated, fire-resistant EPS shell (U-factor 0.8)
Heating effect (winter) 820 W
Installation Horizontal
Max. water flow (W-AH 250) 150 l/h
Weight 6.6 kg
Dimensions (l x w x h) 600 x 250 x 335 mm
Pressure loss curve for the air side Pressure loss curve for the water side
[Pa]
70
60
50
40
30
20
10
0
0 50 100 150 200 250 300 350 400 450 [m
3
/h]
[KPa]
70
60
50
40
30
20
10
0
0 100 200 300 400 500 600 700 800 [l/h]
Power output curve for the air side
[W]
3000
2600
2200
1800
1400
1000
600
2000
0 50 100 150 200 250 300 350 400 450 [m
3
/h]
1
2
3
4
8
7
6
5
70/40/20
50/40/20
Installation Guide Danfoss Air Heating Surfaces
VIFKB502 Danfoss Heating Solutions
16
4.3 Geothermal heating surfaces
Connection, air Ø 250 mm
Connection, water 3/8" RG, nipple
Box Highly insulated, fire-resistant EPS shell (U-factor 0.8)
Max. heating surface (400 m³/h, temp. 70/40/20°) 2.350 W
Heating effect (winter) 820 W
Cooling effect (summer) 850 W (actual cooling to room)
Installation Horizontal
Max. brine flow 400-600 l/h
Weight 6.6 kg
Dimensions (l x w x h) 600 x 250 x 335 mm
Pressure loss curve for the air side Pressure loss curve for the brine side
[Pa]
70
60
50
40
30
20
10
0
0 50 100 150 200 250 300 350 400 450 [m
3
/h]
[KPa]
70
60
50
40
30
20
10
0
0 100 200 300 400 500 600 700 800 [l/h]
Installation Guide Danfoss Air Heating Surfaces
Danfoss Heating Solutions VIFKB502
17
Installation Guide Danfoss Air Heating Surfaces
VIFKB502 Danfoss Heating Solutions
18
Installation Guide Danfoss Air Heating Surfaces
Danfoss Heating Solutions VIFKB502
19
Installation Guide Danfoss Air Heating Surfaces
Danfoss A/S
Heating Solutions
Ulvehavevej 61
7100 Vejle
Denmark
Phone:+45 7488 8500
Fax: +45 7488 8501
Email: [email protected]
www.heating.danfoss.com
Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products
already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed. All trademarks in this material are property of the respective
companies. Danfoss Heating Solutions and the Danfoss Heating Solutions logotype are trademarks of Danfoss A/S. All rights reserved.
VIFKB502 Produced by Danfoss Heating Solutions © 05/2012
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Danfoss 089F0359 Installation guide
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