34
12. Startup Procedures
Measure Input - Natural Gas Only
5.
a. Ensure the appliance is firing at maximum firing rate.
Reference High Fire Test Mode, Section 12.10.4, for procedure
to manually place the unit into high fire
b. Turn off all gas appliances on the gas service, except the
CHALLENGER.
c. Operate the CHALLENGER for approximately 10 minutes
d. At the gas meter, record the time required to use one cubic foot
of gas.
e. Calculate Natural Gas Input using the following equation:
3600 * 1000 / Seconds for 1 cubic ft of gas = BTU/hr
f. The BTU/hr calculated should approximate the input rating
listed on the appliance.
12.5 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 .
12.6 Set Boiler Maximum Central Heating (CH) Set Point
Temperature
Press the CH/DHW/Parameter button “ ” on the display panel
1.
for approximately 2 to 3 seconds until the radiator symbol “ ”
LED lights up and the main display begins to flash.
Press the or buttons to set the desired maximum
2.
temperature setting on the main display.
Press the
reset button to close the setting menu and store
3.
the changes.
12.7 Operation Verification - Space Heating
Set the room thermostat to the lowest setting.
1.
Turn off power to the appliance, wait a few seconds and turn on
2.
power to the appliance.
The following operating displays should occur:
3.
[A] Self check on power up
[ ] No call for heat
Initiate a call for heat by raising the set point of the room
4.
thermostat to the highest setting. The following operating
display should occur:
[1] This is the prepurge cycle. The burner blower and the CH
circulator become energized. The blower has a 5 second
prepurge cycle.
[2]This is the ignition cycle. The control module will open the
gas valve and begin the spark for ignition.
a. If the burner lights and the flame is proven, the burner will
begin to modulate.
b. If the burner fails to light or the flame is not proven, the
control module will repeat the ignition sequence after
approximately 15 seconds . If the flame is not established
after four attempts, the control will lockout. The main
display will show [4] and the fault LED above the
reset
button will flash and [E] will flash in the operating display.
c. To verify flame failure safety lockout, close the manual
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.
Table 5: Recommended Combustion Levels
If the
reset button is not pressed within 30 sec-
onds, the parameter menu is automatically closed and
the changes are stored.
If the
ON/OFF button is pressed prior to the
reset button, the parameter menu is closed and the
changes are NOT stored.
NOTICE
Digits and characters shown below in brackets repre-
sent the control module operating display.
NOTICE
Combustion Levels
Natural Gas
Propane Gas
H
ig
h
Fi
re
D
O
O
R
O
FF
*
CO2 Range
9% - 10.1%
10.5% - 11.1%
CO2 Target
9.0%
10.8%
O2 Range
3.0% - 5%
4.1% - 5.0%
O2 Target
5.0%
4.5%
Lo
w
F
ir
e
CO2 Range
0% - 0.4% <H.F.
9.0%
0% - 0.4% <H.F.
10.5% min.
O2 Range
0% - 0.6% > H.F.
5.0% max.
0% - 0.6% > H.F.
5.0%max.
CO Max.
100 ppm
150 ppm
* Door On can raise the maximum allowable CO2 by 0.4 or lower the
minimum O2 by 0.6
Summary of Contents for CC105
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