Instruction manual

27
Servicing should only be performed by a Qualied Service Agent
CONNECTORS PINS TERMINOLOGY DESCRIPTION AND RATING
J1
1 Not Used
2 FLAME SENSE1/2: SENSE Flame Rod Input.
3 FLAME SENSE1/2: GND Flame Rod Common.
4 Not Used
5 Not Used
6 Not Used
J2
1 TACH Tachometer Input (Tach).
2 25VDC Electronic Blower Motor Power (25 VDC).
3 PWM Digital modulation (PWM) Output Digital modulation signal out.
4 GND Ground pin for Fan interface and power.
J3
MB1
A Modbus MB1 RS-485 +. Connects to Display.
B Modbus MB1 RS-485 -. Connects to Display.
C Modbus MB1 Ground (G). Connects to Display.
MB2
A Modbus MB2 RS-485 +. Connects to Local Burner Control
Board for Lead lag application.
B Modbus MB2 RS-485 -. Connects to Local Burner Control
Board for Lead lag application.
C Modbus MB2 RS-485 Ground (G). Connects to Local Burner
Control Board for Lead lag application.
ECOM
1: Not Used
2: Not Used
3: Not Used
J4
1 Not Used
2 Not Used
3 Not Used
4 Not Used
5 Not Used
6 PUMP1/PUMP Output 120 VAC Power output to Pump Relay.
7 H_PUMP/PUMP Input 120 VAC Power input from Power Distribution Block.
8 Not Used
9 Not Used
10 SOLA1_L_RTN 120 VAC Power Supply Neutral.
11 Not Used
12 G/EARTH GROUND Earth Ground.
J5
1 INTERLOCK/BFS Blocked Flue Switch. Per Model Input Rating.
2 GV1 24VAC Power input to the Gas Valve.
3 Not Used
4 Not Used
5 Not Used
6 SPARK_G1 120 VAC Power output to Spark Generator.
7 H_BLOW_SPRK 120 VAC Power input from Power Distribution Block.
J6
1 LWCO Annunciator for LWCO Input.
2 Not Used
3 FLOW_SW Annunciator for Flow Switch Input.
4 Not Used
5 Not Used
6 Not Used
7 Not Used
8 Not Used
TABLE 3. CONTROL BOARD CONTACTS/CONNECTIONS