Overview of Primary Product

19
£
WIRING DIAGRAM & CONNECTIONS - MAIN CHASSIS
On/Off
Alarm
Fan Motor
Interlocks & Limits
Air Flow
120 VAC
POVC
1
15 A. Fuse
6
7
8
9
10
1
2
3
5
4
Low Fire
1
High Fire
1
6
7
8
E
2
3
5
4
MS
Aux. Input #4
1
Aux. Input #3
1
Aux. Input #2
1
Aux. Input #1
1
Leak Detect
1
Neutral
Main
Leak Detect
Pilot
Ignition
Shield
8
9
10
1
2
3
7
4
Blue
Flame Rod
Yellow
Flame Rod
Shield
Blue
UV7A4
or UV7R4
U.V. Scanner
Yellow
Main Gas Valve
Block Valve
Pilot Gas Valve
Neutral
J1
Terminals
J2
Terminals
J4
Terminals
2
J5
Terminals
2
Burner #1
Burner #3
5
6
8
9
10
1
2
3
7
4
Flame Rod
Shield
Yellow
Blue
Burner #2
Flame Rod
Shield
Yellow
Blue
Burner #4
5
6
6
5
4
3
1
2
RS 232
Rx
Tx
Remote
Reset
Pushbutton
(if required)
VDK/VLSD
J7
Terminals
When not used, must be tied into 120 VAC.
Using both sensors isn’t mandatory; you may use a flame rod, or a UV scanner, or both.
J1 (Input) Terminals
1 – Limits Input
2 – Air Switch Input
3 – POVC Switch Input
1
4 – Low Fire Switch Input
1
5 – High Fire Switch Input
1
6 – VDK/VLDS Input
1
7 – Aux. #1
1
8 – Aux. #2
1
9 – Aux. #3
1
10 – Aux. #4
1
J7 (Interface) Terminals
Auxiliary
Inputs
1 – Flame Rod
2 – Ground (Yellow)
3 – U.V. (Blue)
4 – Shield Connection
5 – Not Used
6 – Not Used
7 – Flame Rod
8 – Ground (Yellow)
9 – U.V. (Blue)
10 – Shield Connection
1 – U.V. (Blue)
2 – Ground (Yellow)
3 – Flame Rod
4 – Shield Connection
5 – Not Used
6 – Not Used
7 – U.V. (Blue)
8 – Ground (Yellow)
9 – Flame Rod
10 – Shield Connection
J2 (Output) Terminals
1 – Neutral
E – Earth Ground
2 – 120 VAC
3 – Fan
4 – Main Gas Valve
5 – Pilot Gas Valve
6 – Ignition Transformer
7 – VDK/VLSD
8 – Alarm
Multi-Flame
Power Inputs
Outputs
J3 (Modulation) Terminals
1 – Common
2 – Auto
3 – Hi Fire
4 – Low Fire
Modulation
Motor
Connections
for High Fire &
Low Fire Start
J4 (Sensors/Burners 1 & 3) Terminals
2
Burner #1
Burner #3
J5 (Sensors/Burners 2 & 4) Terminals
2
Burner #2
Burner #4
6 – RS 232/RS 485 Interface
5 – RS 232/RS 485 Interface
4 – Reset
3 – Scan
2 – Enter
1 – Ground
UV7A4
or UV7R4
U.V. Scanner
UV7A4
or UV7R4
U.V. Scanner
UV7A4
or UV7R4
U.V. Scanner
(GN) GND (Return)
D
C
A
B
(BK) Signal (UV)
(RD) Neutral
(WH) 120 VAC
UV7SC
Self-Check
Scanner
VDK/VLSD
Customer Supplied (if used)
1
2
3
4
Common
Auto
High Fire
Low Fire
J3
Terminals
HF
+
-
Actuator
Temperature
Controller
4 to 20 mA
Ignition Coil
CR
Ignition Coil
CR
CR
120VAC
+
-
G
1
as needed
N
L
G
To
Expansion
Board
J9
Terminals
J9 Expansion Power
3 – N
2 – G
1 – L
Connect all scanner shields together and connect to earth ground.
2
2
22
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
3