Baso BG1600M Installation Instructions Manual page 3

Combination
Rollout Switch Function
The rollout switch is wired to the BG1600M ignition control
at Terminal 7 (R.O. SW) and Terminal 4 (24V/TH) (see
Figure 1). The rollout switch (a normally closed set of
contacts) is positioned to detect flames rolling out of the
combustion chamber. If rollout occurs, the switch contacts
open and the BG1600M immediately goes into a lockout
condition, closing the main and pilot valves so that the
system is not allowed to function.
1 2
PV
MV
Gas Valve
6
Pilot
Flame
Burner/Ignitor
Sensor
1 Power Supply. Provides disconnect means and overload protection as required.
Maximum cable length 48 inches (1,220 mm). (Resistive wire recommended.)
2
Alternate location for limit controller.
3
4 Controls in 24V circuit must not be in ground leg to transformer.
5 Maximum cable length 48 inches (1,220 mm).
Sensor rod must be 3/8" (9.53 mm) to 1/2" (12.7 mm) of the sensor tip should
6
be in the flame for proper sensing signal.
Figure 1: Wiring for 2 Rod Flame Sense with Rollout Switch
BG1600M Intermittent Pilot Ignition Control with Rollout Switch Installation Instructions
3 4 5 6 7 8
Thermostat
5
High
3
Temp
Limit
4
24VAC
Class 2
Transformer
Chassis or Frame
Ground
The thermostat contacts must be opened for 30 seconds,
then closed to escape the lockout condition. When the
rollout switch contacts have returned to the closed
position, the BG1600M will start its operating sequence
when the thermostat contacts close.
10
9
1
L1 (Hot)
L2 (Neu)
2
Rollout
Switch
3