
BGH2UNCTRLHT-01 Universal Hot Surface Ignition Control Installation Instructions 7
GND
(24V)
GND
(VALVE)
GND
(BURNER)
HSI
L1
HSI
24V
(TH)
VALVE
SENSE
(REMOTE)
L2
120/240V
NEUTRAL
120/240V
HOT
MARK
POS
4
12
3
4
5
6
7
89
10
UNIVERSAL
ONLY
1
2
3
4
5
ON
Combination
Gas Valve
Chassis or
Frame Ground
Thermostat
High Temp
Limit
24V
Class 2
Transformer
L1 (Hot)
L2 (Neutral)
1
2
3
HSI
(Hot Surface Igniter)
Wire
Nut
5
Burner
Ground
1
2
Power Supply. Provides disconnect means and overload protection as required.
The controls 24V circuit must not be in the ground leg to the transformer.
4
3
Alternate location for limit to the controller.
For Internal Flame Sense circuits, check that the jumper wire is connected between HSI HOT
(terminal 7) and SENSE REMOTE (terminal 10).
5
Ensure the burner ground is in the pilot flame (3/8” [9mm] to 1/2” [12.7mm]) for proper sensing signal.
Figure 1: Typical Wiring for BGH2UNCNTRLHT-01 with Internal Flame Sense
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