60
10
Start-up
Table 10A Flue Products Chart
6. Once the combustion analysis is complete, exit Service
Mode.
7. Turn the main power off to the boiler and replace the
plug into the vent adapter.
8. Place the boiler back into normal operation.
You must replace the flue gas temperature
sensor to prevent flue gas spillage into the
room. Failure to comply could result in
severe personal injury, death, or substantial
property damage.
WARNING
Goal
Natural Gas
Propane
CO
2
O
2
CO
2
O
2
Range
8.5% - 10.5% 2.3% - 5.7% 10.0% - 11% 4.1% - 5.6%
Target
9.0% 4.9% 10.5%
4.9%
Installation & Service Manual
3. Press the
►
and
▼
buttons (simultaneously) for 5
seconds to enter Service Mode.
4. Insert the probe from a combustion analyzer into the hole
on the vent adapter.
5. Once the boiler has modulated up to full fire, measure the
combustion. The values should be in the range listed in
Table 10A below. The CO levels should be less than 150
ppm for a properly installed unit.
If the combustion is not within the specified range,
reference Section 13 - Troubleshooting for possible causes
and corrective actions.
Set space heating operation
Determine controlling sensor
For space heating systems, the temperature control can be
based on the outlet or the system supply sensor (optional). The
control will automatically switch to the system supply sensor
once it is connected.
Verify space heat circulator operation
The Space Heating Mode controls the boiler pump and the
diverter valve. When the boiler control receives a space
heating call for heat and the boiler is not heating a DHW
(Domestic Hot Water) call, and the set point is not met, it
turns on the boiler pump and places the diverter valve in the
space heating position. After the space heating call for heat
ends, the boiler pump continues to run for a short period of
time. This pump delay is factory set to 30 seconds. After this
pump delay, the pump is turned off and the diverter valve is
placed into the DHW position.
Set domestic hot water (DHW) operation
Verify DHW operation
The DHW Heating Mode controls the boiler pump and
the diverter valve. When the boiler control receives a
DHW call for heat from the DHW flow switch, it turns on
the boiler pump and puts the diverter valve in the DHW
position to route boiler water through the brazed plate heat
exchanger. During the call, the boiler control will modulate
to maintain the DHW outlet temperature to the DHW set
point.
After the DHW call for heat ends, the boiler pump
continues to run for a short period of time. This pump
delay is factory set to 30 seconds.
F I R E T U B E C O M B I
™
