74 Direct-Fired Make-up Air • MUA-SVX01A-EN
Trouble Shooting
Settings and Adjustments
The relay module has three site-configurable jumper options.
If necessary, clip the site-configurable jumpers with side cutters and remove the
resistors from the relay module.
Note: Clipping and removing a site-configurable jumper enhances the level of
safety.
Clipping and removing a jumper after 200 hours of operation causes a
non-resettable fault 100. The relay module must then be replaced.
Table 15. Jumper options
Jumper # Description Intact Clipped
JR1 Pilot Flame Establishing Period (PFEP) 10-Sec 4-Sec
JR2 Flame Failure Action Recycle Lockout
JR3 Airflow Switch (1LK) Failure Recycle Lockout
Figure 28. Uses FG.figure#
Flame Relay
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