TriangleTube 399 Solo - Manual (Page 50)

44
Start-Up Procedures
approximately 1 minute. After this time
period, the control module will begin to
modulate the burner firing rate based on
actual boiler outlet temperature and the set
point temperature.
6. Allow the boiler to operate and allow the
boiler outlet temperature to reach the set
point temperature.
[ 6180 ] This begins the burner shutdown
and post purge cycle. The CH circulator
will continue to run until the room thermo-
stat is satisfied.
7. Lower the room thermostat set point below
the room temperature to end the call for
heat.
[ 1180 ] This begins a post purge cycle.
When the room thermostat is satisfied, the
boiler will shutdown. The control module
will close the gas valve and the blower will
continue for 30 seconds for a post purge
cycle before shutting down. If another call
for heat is initiated, the boiler will remain
off for an additional 30 seconds before
starting a new ignition sequence.
[ 7180 ] The CH circulator will continue to
run for a 1 minute post pump cycle.
[ 0180 ]The boiler is in standby MODE
waiting for a call for heat.
8. Verify the operation of the boiler by repeat-
ing the operational sequence several times.
9. Return the room thermostat to a desired set-
ting. Reconnect the DHW wiring or return
the DHW aquastat to desired setting, plac-
ing the DHW system into operation.
Operation Verification - Domestic Hot
Water (if applicable)
1. As outlined in the verification for space
heating, repeat STEPS 2 through 4.
2. Raise the DHW aquastat setting to initiate a
call for heat. As in the space heating opera-
tion the display should show:
[ 5140 ] This is a fan / air flow check. The
burner blower will be energized momen-
tary prior to the prepurge cycle.
[ 1180 ] This is prepurge cycle. The burner
blower and DHW circulator become ener-
gized and the 10 second prepurge cycle
begins.
[ 2180 ] The boiler will begin the ignition
sequence. The same sequence of establish-
ing flame, trail for ignition and attempts for
ignition as described in the space heating
applies for domestic water heater.
[ 4180 ] This indicates normal operation
for DHW. The burner will begin modulat-
ing its input to maintain the DHW set point.
The burner will not go into the low input
rate for the 1 minute flame stabilization
period that occurs in CH mode.
3. Lower the DHW aquastat to satisfy the call
for heat.
[ 1180 ] The post purge cycle begins. The
control module closes the gas valve and the
blower continues for a 30 second post
purge.
[ 8180 ] The DHW circulator will continue
for a 30 second post pump cycle. If anoth-
er DHW call for heat is initiated the boiler
ignition sequence will begin immediately.
[ 0180 ] Boiler is in standby MODE wait-
ing for a CH or DHW call for heat.
4. Verify the DHW operation of the boiler by
repeating the outlined operation sequence
several times.
5. Return the DHW aquastat and room ther-
mostat to the desired setting.