Table of Contents
Advertisement
•
Allow the water temperature to rise so that the heater
cycles on the operator.
•
Check the temperature rise across the heat exchanger.
This will be item ∆T on the SmartFlame control. For
hydronic applications and for domestic hot water, a rise
exceeding 35ºF is not normally recommended. After
confirming temperature rise, set the control to the
"OUT" temperature display using the item key.
•
Allow the unit to cycle on the limit. This can be done by
gradually restricting outlet water flow. The auto reset
limits are set at 200ºF for domestic hot water and
230ºF for hydronic heating. In addition the heaters are
equipped with a manual reset high limit set at 210ºF for
domestic hot water and 250ºF for hydronic heating.
After confirming limit operation return the control to the
"IN" temperature display.
•
Remove fan inlet filter. During trial for ignition, block
50% of the fan inlet opening. The air flow light should
de-energize. If it does not, slowly turn the adjustment
on the normally closed blocked flue switch counter-
clockwise until the air flow light energizes.
•
Check the air proving switch. Remove the restriction
from the fan inlet and reset the power on the control
panel. A properly set air switch will cause the air flow
light to denergize at a fan speed between 15Hz and
20Hz on the VDF.
•
Check the ignition retries circuit.
•
Shut the main gas off to the unit and allow it to try for
ignition. Trial for ignition should commence within 30
seconds.
8.4
COMISSIONING APPLIANCE
•
Remove manometers and replace inlet gas pressure
test plug.
•
Fill out start up report for each heater. Be sure to
record all settings and readings. Retain a copy of
report for future reference.
•
Start up is now complete and heater may be placed
into service.
44
Hide quick links:
Advertisement
Table of Contents
