29
11. Startup Procedures
To verify flame failure safety lockout, close the manual
c.
shut off valve on the gas supply piping to the appliance
and repeat the ignition sequence. When verification is
complete, ensure the manual shut off valve is returned
to the open position.
[ 3 ] This is the normal Central Heating (CH) operation cycle.
The control module will begin to modulate the burner firing rate
based on actual appliance outlet temperature and the set point
temperature. The CH water temperature is displayed on the
main display.
Allow the appliance to operate and the boiler outlet temperature
5.
to reach the set point temperature.
[ 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 to run during the 10 second post purge cycle, before
shutting down. The CH circulator will continue to run until the
room thermostat is satisfied.
Lower the room thermostat set point below the room
6.
temperature to end the call for heat.
[ 1 ] This begins a post purge cycle. When the room
thermostat is satisfied, the appliance will shutdown.
[ 7 ] The CH circulator will continue to run for a 1 minute post
pump cycle.
[ ] The appliance is in Standby, waiting for a call for heat.
Verify the operation of the appliance by repeating the
7.
operational sequence several times.
Return the room thermostat to the desired setting.
8.
The CH circulator automatically runs for 10 seconds
once every 24 hours to prevent seizing. Timing for this
automatic exercising starts after the last call for heat.
NOTICE
11.8 Control Display
11.8.1
Appliance ON/OFF
Turn appliance ON/OFF using the
ON/OFF button.
1.
When appliance is ON, the green LED above the
ON/OFF
2.
button will be lit. The main display will show the water pressure
followed by “P” when there is no heat demand.
When the appliance is OFF, the green LED above the ON/OFF
3.
button will not be lit. The main display will show “OFF” and the
operating display will show
11.8.2
Units
Press Up/Down arrow button to change the displayed units from U.S.
Customary (°F & psi) to metric (°C & bar). The °F/psi LED will be lit for
U.S. Customary units or °C/bar LED will be lit for metric units.
A. On/Off
B. Parameter
C. Decrease
D. Increase
E. U.S. customary or metric units
F. Not applicable
G. Service
H. Reset/store
Indicators
Buttons
1. On/Off (Lit when on)
2. CH operation or setting maximum CH temperature
3. DHW operation with optional Triangle Tube
SMART/COMFORT I.F.W.H.
4. Main display with temperature or water pressure
or fault code
5. Temperature ºF & pressure psi
6. Temperature ºC & pressure bar
7. Not applicable
8. Not applicable
9. Operating display
10. Flashes to indicate fault
Units cannot be changed if the main display or operat-
ing display is flashing.
NOTICE
Содержание CC105s
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