Temperature Problems - IBC SL 20-160 G3 Installation And Operating Instructions Manual

5.3.4 Temperature Problems

SYMPTOM
INSUFFICIENT HEAT
TEMPERATURE EXCEEDS
THERMOSTAT SETTING
ONE OR MORE ZONES DO
NOT HEAT PROPERLY
5-10
SL 20-115 G2 MODULATING GAS BOILER
SL 10-85 G3, SL 14-115 G3, SL 20-160 G3, SL 30-199 G3 MODULATING GAS BOILERS
DIAGNOSIS
Operating temperature
too low.
Priority parameters
or load configuration
improperly set up.
Unit undersized.
Air trapped within
system.
Improper system
piping.
System pump
undersized.
Poor gas/air mixing.
Defective thermostat.
Obstruction in
condensate drain.
Unit cycling on
operating/ safety
controls.
System radiation
undersized.
Incorrect anticipator
setting.
Thermostat not level.
Air trapped within
zone(s) piping
Insufficient radiation/
excessive heat loss.
Insufficient flow rate to
zone(s).
Defective zone valve/
zone circulator.
REMEDY
Increase temperature target.
Review load configuration parameters.
Refer to Load Calculation vs. Boiler Output.
Bleed system as required.
Refer to recommended piping in Section 1.6
Check pump manufacturer's data/check temp
differential across heat exchanger.
Check CO level.
2
Refer to manufacturer's instructions.
Inspect and clean condensate drain.
Check operation with Ohmmeter/Voltmeter.
Check manufacturer's rating tables for capacity per
foot.
Check with Ammeter.
Check level.
Vent system/zone as required.
Check actual length of pipe using radiation / heat loss
calculation.
Check temperature drop across zone.
Check operation per manufacturer's instructions.
INSTALLATION AND OPERATION INSTRUCTIONS