Aerco, Installation, Sd -a -795 c – AERCO Boiler Valve Controller (BVC) PRIOR to Serial-12-840-1 User Manual
Page 23
INSTALLATION
23
NORTHVALE
, NJ
07647
INTERNATIONAL
, INC
.
APPD
.
DWN
.BY
SCALE
DATE
DATE
JK
NTS
121009
AERCO
SD
-A
-795
C
REV
.
AERCO MOTORIZED ISOLATION VALVE
4
BOILER CONTROL PANEL
WIRING DIAGRAM
NOTES
:
1.
MOTORIZED VALVES MUST BE SPRING RETURN OPEN
, POWER CLOSED
.
2.
MOTORIZED VALVES ELECTRICAL REQUIREMENTS
: 120
/1
/60
3.
CONTROL PANEL CONTACTS RATED FOR MAXIMUM OF
2
AMPS
.
4.
WIRE TO BE
16
AWG
.
5.
OPEN END SWITCH MUST CLOSE WHEN VALVE OPENS
. THIS WILL CLOSE THE
DELAYED INTERLOCK IN THE I
/O BOX AND ALLOW THE BOILER TO FIRE
.
6.
OPEN END SWITCH MUST OPEN WHEN VALVE CLOSES
. THIS WILL OPEN THE
DELAYED INTERLOCK AND PROHIBIT THE BOILER FROM FIRING
.
7.
THE AUX START ON DELAY MUST BE PROGRAMMED IN THE C
-MORE
. THE
DELAYED INTERLOCK MUST BE CLOSED BEFORE THIS TIME LAPSES
, OTHERWISE
,
THE BOILER WILL LOCKOUT AND GO TO A FAULT
.
AERCO MOTORIZED ISOLATION VALVE 4
BOILER CONTROL PANEL
L
N
120
VAC
, 60
Hz
, 1
PH
AERCO MOTORIZED ISOLATION
VALVE
4
BOILER CONTROL
PANEL CONTACT LABELS
5
1
6
2
7
3
8
4
17
9
13
18
10
14
19
11
15
20
12
16
MOTORIZED
VALVE
#1
DLY INT
OUT
24
V
____
AUX RELAY
NO
COM
NC
____NO
COM
FAULT RELAY
NC
____
COM
____IN
____
I/O BOX ON BOILER
#1
COMMON
CLOSE
OPEN END SWITCH
MOTORIZED
VALVE
#2
DLY INT
OUT
24
V
____
AUX RELAY
NO
COM
NC
____NO
COM
FAULT RELAY
NC
____
COM
____IN
____
I/O BOX ON BOILER
#2
COMMON
CLOSE
CLOSE
OPEN
NEUTRAL
BLR
#1
Relay
CLOSE
OPEN
NEUTRAL
CLOSE
OPEN
NEUTRAL
CLOSE
OPEN
NEUTRAL
BLR
#2
Relay
BLR
#3
Relay
BLR
#4
Relay
MOV
#1
MOV
#2
MOV
#3
MOV
#4
5
3
7
4
8
2
6
1
Boiler
#1
Relay
Boiler
#2
Relay
Boiler
#3
Relay
Boiler
#4
Relay
1
2
3
4
5
6
7
8
Close
9
13
Open
MOV
#1
17
"N
"
17
13
9
10
11
12
14
15
16
18
19
20
Close
10
14
Open
MOV
#2
18
"N
"
Close
11
15
Open
MOV
#3
19
"N
"
Close
12
16
Open
MOV
#4
20
"N
"
OPEN END SWITCH
Figure 10 - Basic Wiring Diagram Depicting Interfacing a BVC (4 Boiler Version) with Two Boilers