Page 35
The
O
MNI
T
HERM
7.D Control Panel Layout
Figure 12. Control Panel Layout and Components
Figure 13.
Field Connections
(on Terminal Block 1)
GND
1
GND
2
GND
3
GND
4
120N 5
120N 6
120N 7
120L
8
120L
9
120L 10
24N 11
24N 12
24N 13
24V 14
24V
24V
15
16
BOILER PUMP (N) 17
BOILER PUMP (L) 18
DHW PUMP
19
DHW PUMP
20
SYSTEM PUMP
21
SYSTEM PUMP
22
SPARE 1
23
SPARE 1
24
SPARE 2
25
SPARE 2
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
120
VA
C
H2381200C
24
VA
C
D
RY
CON
TA
CT
S
ALARM BELL
61
ALARM BELL
62
SYSTEM SUPPLY
SYSTEM SUPPLY
SYSTEM RETURN
SYSTEM RETURN
DHW
DHW
OUTDOOR
OUTDOOR
CH1/DHW1
CH1/DHW1
CH2/DHW2
CH2/DHW2
DHW/DHW3
DHW/DHW3
SPARE 1
SPARE 1
SPARE 2
SPARE 2
BAS 0-10VDC
BAS 0-10VDC
PUMP 0-10VDC
PUMP 0-10VDC
RUN - C
RUN - N.C.
RUN - N.O.
ALARM - C
ALARM - N.C.
ALARM - N.O.
CASCADE - B
CASCADE - A
CASCADE - GND
BMS - B
BMS - A
BMS - GND
RS
48
5
RS
48
5
SEN
SORS
H
EA
T
D
EM
AN
D
S
SPARE IN
PUTS
IN
OUT
D
RY
CON
TA
CT
S
27
28
7.E
Field Connections
Wiring for all field connections must be run through the available electrical
conduit to the back of the unit. See Figure 11.
When running the field connection wiring between the units in a cascading
installation, always exit and enter the unit through the lower back panels
so that during future servicing, the wires do not have to be disconnected in
order to remove the top and side panels.
It is up to the electrician to install all power and system wiring
as per codes and best practices.
