EQKC COMBI COOLER
FläktGroup
DC_8931GB 20180202_R0
We reserve the right to make changes without prior notice
Installation and maintenance instructions
3
ALARMS AND WARNINGS
The Combi Cooler can be connected to an external control
system in several ways. The two most common are shown
below.
Option 1 describes how the integrated control unit can be maxi-
mised. This option has a number of advantages over option 2.
This is because the system is controlled optimally, based on
the all the expertise gained from product development.
Option 2 describes how much of this functionality is transferred
to an external control system. When this type of connection is
used the external control system must deal with some functions
that are crucial to the system’s performance.
65
63
64
51
52
53
54
55
56
57
58
59
60
61
62
66
67
68
L2
L1
L3
N
PE
L2
L1
L3
N
PE
Power supply
3 x 400 AC
1
2
1
2
3
3
5
5
4
4
SV2
Supply air coil
Valve actuator
Interlocked by the
outdoor temperatur
Interlocked by the
extract air fan
To be connected to the
main circuit breaker
Room condensation
indication
CP51 Operation
Signal for slow
valve closure
Summation alarm
Cooler alarm
Unit interlocked
by CP51
1
2
1
2
3
3
1
2
1
2
1
2
1
2
1
0
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
External
Combi Cooler
BMS/Unit
GH53
Room conden-
sation sensor
GT53
Chilled beam water
temperature sensor
SV53
Chilled beam water
valve actuator
1 G
G
0
G
G
0
Y
G
G
0
Y
Q11
Q12
2
3
4
1
2
3
1
2
3
1
2
3
4
1
2
3
1
2
3
24 V AC
Gnd
0 - 10 V DC
24 V AC
Gnd
0 - 10 V DC
0 - 10 V DC
24 V AC
24 V AC
Gnd
Min value
Gnd
C
D1
C
N0
C
N0
C
N0
N0
4 min
Option 1.
Option 2.
Cooler alarm
Summation
alarm
Condensation
alarm
CP51 Operation
SV2
Supply air coil
Valve actuator
Interlocked by the
outdoor temperature
Interlocked by the
extract air fan
Room conden-
sation indication
GH53
Room conden-
sation sensor
GT53
Chilled beam
water temper-
ature sensor
SV53
Chilled beam
water valve
actuator
Power supply
3 x 400 AC
To be connected to the
main circuit breaker
Unit interlocked
by CP51
24 V AC
Gnd
0 - 10 V DC
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
3 3
1
2
1
2
1
2
1
2
1
G
G
0
G
G
0
Y
G
L1
L2
L3
N
PE
G
0
Y
G
G
0
Y
Q11
Q12
2
1 65
63
64
51
52
53
54
55
56
57
58
59
60
61
62
66
67
68
69
70
71
72
73
74
2
3
4
3
1
2
1
2
3 3
1
2
1
2
3 3
1
2
1
2
3 3
5 5
4
4
4
Combi Cooler
BMS/Unit
External
L1
L2
L3
N
PE
C
N0
C
N0
C
N0
C
N0
N0
C
N0
