Install Instructions

47
Start-Up Procedures
[1] The setpoint temperature has been
reached. Combustion will cease and the post
purge cycle of the blower begins. The control
module will de-energize the gas valve and
the blower will continue with the 10 second
post purge cycle, before shutting down. The
CH circulator will continue to run until the
room thermostat is satisfied.
6. Lower the room thermostat set point below
the room temperature to end the call for
heat.
[
1] This begins a post purge cycle. When
the room thermostat is satisfied, the appli-
ance will shutdown.
[
7] The CH circulator will continue to run
for a 1 minute post pump cycle.
The CH circulator automatically runs
for 10 seconds once every 24 hours to
prevent seizing. Timing for this automat-
ic switching starts after the last call for
heat.
[ ] The appliance is in Standby MODE
waiting for a call for heat.
7. Verify the operation of the appliance by
repeating the operational sequence several
times.
8. Return the room thermostat to a desired set-
ting.
Set DHW Set Point Temperature
1. Press the CH/DHW/parameter button “ ”
at the display panel for approximately 2 to
3 seconds until the faucet “ ” (DHW)
LED lights up and the main display begins
to flash.
2. Press the or buttons to set the desired
domestic water temperature on the main
display. Minimum setting is 104ºF [40ºC],
Maximum setting is 149ºF [65ºC], factory
default is 120ºF [49ºC].
3. Press the reset button to close the set-
ting menu and store the changes.
If the reset button is not pressed with-
in 30 seconds, the settings menu is auto-
matically closed and the changes are
stored.
If the ON/OFF button is pressed prior
to the reset button, the settings menu
is closed and the changes are NOT
stored.
Operation Verification - Domestic Hot
Water (if applicable)
Digits and characters shown in brackets
[
0], in the following outline, represent
the control module operating display.
1. Set the room thermostat to the lowest setting.
2. Turn off power to the appliance, wait a few
seconds and turn on power to the appliance.
3. The following operating displays should
occur:
[
A] Self check on power up
[ ] No call for heat
4. Turn on a domestic hot water faucet to initi-
ate a domestic call. The display should show
[
1] This is the prepurge cycle. The burner
blower become energized. The blower has
a 5 second prepurge cycle. The CH (central
heating) circulator will remain off, to pro-
vide DHW priority.
[
2] This is the ignition cycle. The control
module will energize and open the gas
valve and begin the spark for ignition.
- If the burner flame proves, the burner
will begin to modulate.
NOTICE
NOTICE
NOTICE