Verasys Boiler Controller Quick Start Guide
3
Table 3:
Boiler controller point to point wiring diagram
(Part 1 of 3)
No
Description
Object
name
1
Primary or secondary HWP 1 output (to pump
VFD)
xHWP1-
O
2
Primary or secondary HWP 2 output (to pump
VFD)
xHWP2-
O
3
Primary or secondary HWP 3 output (to pump
VFD)
xHWP3-
O
4
Primary or secondary HWP 4 output (to pump
VFD)
xHWP4-
O
5
Relay coil combustion damper command
CD-C
6
Relay coil boiler 1 command
BLR1-C
7
Relay coil boiler 2 command
BLR2-C
8
Relay coil boiler 3 command
BLR3-C
9
Relay coil boiler 4 command
BLR4-C
10
Relay coil boiler pump 1 command
BP1-C
Figure 7: Point to point wiring diagram
Address: SEE RISER
DIAGRAM
PW
R
CO
M
+
-
SENSOR
BUS
+
-
SYSTEM
BUS
CO
M
SH
L
D
IN
4
IN
5
IN
6
IN
7
IN
8
IN
9
IC
OM
7
-1
2
IN
1
4
IC
OM
1
4
IN
1
5
IC
OM
1
5
IN
1
6
IC
OM
1
6
IN
1
7
IC
OM
1
7
UNIVERSAL
BINARY
CONFIGURABLE
OU
T
10
N
O
OC
OM
10
BINARY
HO
T
24 VAC
INPUT
CO
M
VAC3000
OU
T
1
OC
OM
1
OU
T
2
OC
OM
2
OU
T
3
OC
OM
3
24
V
~
CO
M
24 VAC
OUT
IN
1
8
IC
OM
1
8
+1
5
V
CO
M
+
-
MOD BUS
CO
M
OC
OM
4
OU
T
4
PW
M
C
O
M
O
U
T5
P
W
M
PWM
OU
T
6
N
O
OC
OM
6
OU
T
7
N
O
OC
OM
7
OU
T
8
N
O
OC
OM
8
OU
T
9
N
O
OC
OM
9
OU
T
11
-A
OU
T
11
-B
OU
T
12
-A
OU
T
12
-B
OU
T
13
-A
OU
T
13
-B
OU
T
14
-A
OU
T
14
-B
IN
1
3
IC
OM
1
3
CO
M
24
V
~
IN
1
2
IN
1
1
IN
1
0
IC
OM
4
-5
-6
IC
OM
1
-2
-3
IN
3
IN
2
IN
1
MS/TP
MS/TP
+
+
+
-
+
+
-
1
2
3
14
15
16
17
18
24
VDC
OUT
COM
15 VDC
+VDC
OUT
COM
15 VDC
20
21
22
23
+
-
+
-
4
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
NO C
C NO
NO
C
C
NO
NO C
C
NO
C NO C NO
36
29 30 31 32 33 34
NO C
C
NO
C NO
C
NO
C
NO
5
9
7
8
11
13
12
6
10
19
26 27 28
35
25
11
Relay coil boiler pump 2 command
BP2-C
12
Relay coil boiler pump 3 command
BP3-C
13
Relay coil boiler pump 4 command
BP4-C
14
24 V COM
15
24 V HOT
16
From last device
17
To next device
18
Zone temperature sensor that can initiate
boilers at night.
ZN-T
19
Shutdown command
EMERG-
STOP
20
Primary hot water flow
PHW-F
21
Hot water differential pressure
HW-DP
22
Outside air temperature
OA-T
23
Hot water return temperature
HWR-T
Table 3:
Boiler controller point to point wiring diagram
(Part 2 of 3)
No
Description
Object
name
