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VMBQA202
Installation
Cooling Module
DCM-Passive
DCM-Passive/Active
VMBQA202
If these instructions are not followed during
installation, operation and maintenance,
Danfoss AS’s liability according to the applicable
warranty is not binding.
© 2009 Copyright Danfoss AS.
Danfoss AS retains the right to make changes to
components and specifications without prior notice.
Contents
1 Important information/Safety regulations .........3
1.1 Electrical connection ............................................... 3
1.2 Commissioning ....................................................3
2 Area of use.......................................3
3 For the installer ..................................3
3.1 Installation ......................................................... 3
3.2 Function during cooling operation.................................. 3
4 Dimensions for connections.......................4
4.1 Dimensions for connections Passive ................................ 4
4.2 Dimensions for connections Passive/Active ......................... 5
5 Internal connection ..............................6
5.1 Internal connection Passive......................................... 6
5.2 External available pressure Passive, connection H–J ................. 6
5.3 Internal connection Passive/Active.................................. 7
5.4 External available pressure Passive/Active, connection H–J ..........7
5.5 External available pressure Passive/Active, connection A–B ..........7
6 Electrical wire diagrams ..........................8
6.1 Passive, Connections to heat pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
6.2 Passive, Circuit diagram............................................. 9
6.3 Passive/Active, Connection to the heat pump ......................10
6.4 Passive/Active, Circuit Diagram ....................................11
7 System diagrams ............................... 12
7.1 Cooling Module, Heating mode....................................12
7.2 Cooling Module, Passive cool mode................................13
7.3 Cooling Module, Active cool mode.................................14
3
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1 Important information/Safety
regulations
⚠
The cooling module must be installed by authorised installa-
tion engineers and the installation must follow the applicable
local rules and regulations as well as these installation instruc-
tions.
⚠
This apparatus is not intended for persons (including chil-
dren) with reduced physical, sensory or psychological capac-
ity, 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.
⚠
Children are not permitted to play with the apparatus.
⚠
Installation must be carried out in accordance with applicable
local rules and regulations.
NOTE! To prevent leaks ensure that there are no stresses in the
connecting pipes!
NOTE! It is important that the heating and brine circuits are
completely bled after installation.
NOTE! Bleed valves must be installed where necessary.
1.1 Electrical connection
Electrical installation may only be carried out by an authorized elec-
trician and must follow applicable local and national regulations.
⚠
Electrical current! The terminal blocks are live and can be
highly dangerous due to the risk of electric shock. The power
supply must be isolated before electrical installation is start-
ed. The cooling module is connected internally at the factory.
1.2 Commissioning
⚠
The installation may only be commissioned if the heating sys-
tem, water heater and brine system have been filled and bled.
Otherwise the circulation pumps can be damaged.
2 Area of use
The passive/active cooling module, DCM-PA, can be used for coo-
ling requirements greater than what can be obtained through only
passive cooling (free cooling).
For cooling requirements at max. 20 kW.
The cooling modules make it possible to retain either passive or
passive/active cooling from the rock –groundwater collectors. The
distribution system for this can be the radiator system (fan convec-
tors) or under floor heating systems. Cooling starts when the out-
side temperature exceeds the set value for heat stop.
530 mm
3 For the installer
3.1 Installation
The cooling module must be mounted hanging vertically on a wall.
The central distance for mounting holes is 530 mm.
Electrical installation is carried out according to the wiring diagrams
found on page 8-11.
Pipe installation is carried out according to the system diagrams
found on page 12-14.
3.2 Function during cooling operation
Stage 1. Passive cooling
In order for the heat pump to start passive cooling, the following
conditions must be fulfilled:
1. The outside temperature is higher than the setting for heat
stop.
2. Room temperature exceeds the desired temperature by the
same amount of degrees that the room factor is set to.
3. The above requirements must be met within 5 minutes.
The heat pump’s internal brine pump starts and circulates the coo-
lant via the cooling module to the bore hole. In the cooling module,
the set temperature is shunted out to the cooling system
Stage 2. Passive/active cooling (this function are only available
on the passive/active module)
In order for the heat pump to start passive cooling, the following
conditions must be fulfilled:
1. All conditions for passive cooling must be fulfilled.
2. Room temperature exceeds the desired temperature by twice
the room factor.
3. The above requirements must be met for 1 minute.
4. If the in coolant temperature exceeds the desired temperature
to the cooling system during passive cooling, active cooling is
force connected after 120 seconds
The heat pump’s compressor starts and the shift valves for active
cooling operation are reset. In the first instance, the excess heat is
used, which is produced in the heat pump’s condenser for hot water
heating. When the hot water is heated, the excess heat is shifted
down to the bore hole. This provides more favourable operation for
the heat pump at the same time as a high cooling effect and good
efficiency is achieved.
4
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4 Dimensions for connections
4.1 Dimensions for connections Passive
722
60
60
A
B
H
J
475
16085
599
245 120
125 240
All pipe connections are Φ 28.
5
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4.2 Dimensions for connections Passive/Active
72260
60
A
B
C
D
E
F
GH J
475
599
160105
85 75
85 175
125 120120 120
125 240
330
All pipe connections are Φ 28.
6
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5 Internal connection
5.1 Internal connection Passive
5.2 External available pressure
Passive
, connection H–J
901 515
J
H
D
A
Cooling module
Radiators or fan convectors
Heat pump
Exp. card
Ground source
Peap (kPa) H–J
Flow (l/s)
0.2 0.4 0.6 0.8
0
10
20
30
40
50
60
0.3
7
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5.3 Internal connection Passive/Active
5.4 External available pressure
Passive/Active
, connection H–J
5.5 External available pressure
Passive/Active
, connection A–B
901 515
J
H
A
D
E
F
G
B
C
Cooling module
Radiators or fan convectors
Heat pump
Exp. card
Ground source
Peap (kPa) H–JPeap (kPa) A-B
Flow (l/s)
Flow (l/s)
0.2 0.4 0.6 0.8
0
10
20
30
40
50
60
0.3
0.2 0.4 0.6 0.8
0
30
40
50
60
70
80
0.3
8
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6 Electrical wire diagrams
6.1 Passive, Connections to heat pump
9
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6.2 Passive, Circuit diagram
10
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6.3 Passive/Active, Connection to the heat pump
11
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6.4 Passive/Active, Circuit Diagram
12
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7 System diagrams
7.1 Cooling Module, Heating mode
A
A
AD BC
JHEFG
B
B
AB
AB
Cooling circuit
Brine in
Supply line
Brine out
Return line
Expansion
Hot water
Cold water
Accessory
Cooling module
Passive/Active
13
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7.2 Cooling Module, Passive cool mode
A
A
AD BC
JHEFG
B
B
AB
AB
Cooling circuit
Brine in
Supply line
Brine out
Return line
Expansion
Hot water
Cold water
Accessory
Cooling module
Passive/Active
14
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7.3 Cooling Module, Active cool mode
A
A
AD BC
JHEFG
B
B
AB
AB
Cooling circuit
Brine in
Supply line
Brine out
Return line
Expansion
Hot water
Cold water
Accessory
Cooling module
Passive/Active
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