8.3.2 Temperature issues
Temperature issues
Issue
Diagnosis
Fix
Low heat
Operating temperature too low.
Increase temperature target.
Increase temperature target.
Priority parameters or load
configuration improperly set up.
Review load configuration parameters.
Appliance undersized.
Refer to Load Calculation vs. Boiler
Output.
Air trapped within system.
Bleed system as required.
Improper system piping.
Refer to recommended piping guidelines
for the respective boiler model.
System pump undersized.
Check pump manufacturer’s data/check
temp differential across heat exchanger.
Poor gas : air mixing.
Check CO
2
level.
Defective thermostat.
Refer to manufacturer’s instructions.
Obstruction in condensate
drain.
Inspect and clean condensate drain.
Appliance cycling on operating/
safety controls.
Check operation with
Ohmmeter/Voltmeter.
System radiation undersized.
Check manufacturer’s rating tables for
capacity per foot.
Temperature
exceeds thermostat
setting
Incorrect anticipator setting.
Check with Ammeter.
Thermostat not level.
Check level.
One or more zones
do not heat properly
Air trapped within zone(s)
piping
Vent system/zone as required.
Low radiation/ excessive heat
loss.
Check actual length of pipe using radiation
/ heat loss calculation.
Low flow rate to zone(s).
Check temperature drop across zone.
Defective zone valve/ zone
circulator.
Check operation per manufacturer’s
instructions.
101
8.3.2 Temperature issues
Summary of Contents for SL Series
Page 8: ...Intentionally left empty...
Page 12: ...Figure 5 Top view SL 40 399 G3 Figure 6 Bottom view SL 40 399 G3 8 Section Specifications...
Page 14: ...Intentionally left empty...
Page 64: ...Figure 40 Electric wiring connections 60 Section Installation...
Page 76: ...Intentionally left empty...
Page 96: ...Intentionally left empty...
Page 108: ...Intentionally left empty...
Page 110: ...Internal wiring diagram Figure 46 Internal wiring diagram 106 Section Appendices...
Page 111: ...Sequence of operations Figure 47 Sequence of Operation 107 Sequence of operations...