5-64 HD3070 with Automatic Gas Console Instruction Manual
16
MAINTENANCE
Gas Console
The gas console relay board A2 is an interface between motor valves and the control board (A1). An ON or OFF
condition is sent from the control board through REC1 at the bottom of the relay board, which switches one of the
relays on A2 to on or off. The corresponding solenoid or external device is then energized or deenergized (output is
sent via REC3 or REC4 at the top of the relay board). Figure 5-6 shows the relay locations on (A2) as well as the
light emitting diode indicators (LEDs).
Listed below are the pin assignments for REC3 and REC4 of relay board A2:
REC3 Pin # Description
1 Open MV4 (Out-17) CR4
2 AC Common
3 Close MV4 (Out-16) CR5
5 Open MV5 (Out-15) CR6
6 AC Common
7 Close MV5 (Out-14) CR7
9CH
4
Gas Sol
10 CH
4
Gas Sol
11 Open MV6 (Out-12) CR18
12 AC Common
13 Close MV6 (Out-11) CR15
15 120 VAC
16 AC Common
REC 4 Pin # Description
3 Open MV1 (Out-24) CR11
4 AC Common
5 Close MV1 (Out-23) CR10
7 Open MV2 (Out-22) CR9
8 AC Common
9 Close MV2 (Out-21) CR8
11 Open MV3 (Out-20) CR1
12 AC Common
13 Close MV3 (Out-19) CR2
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