IBC Sl Series Installation & Operating Manual page 104

Issue Diagnosis
to improper piping.
Low water flow due
to undersized
pump.
Low water flow due
to restrictions in
water pipe.
Low radiation.
Appliance over-
fired.
Appliance
Oversized.
Improperly set or
defective controls.
Cycling issues
Check manufacturer's rating charts/check temperature differential
across heat exchanger.
Check temperature differential across zone/heat exchanger.
Check actual amount of radiation per zone and refer to
manufacturer's rating tables.
Clock gas meter/check gas pressure with manometer/ check CO
level.
Check load calculation vs. minimum boiler output.
Check operation with ohmmeter/voltmeter.
100
Section: Troubleshooting
Fix
2