56
Please note that the brackets ([]) denote
screen status.
NOTICE
3. Place the boiler into the active position by pressing the
UP button for five (5) seconds (FIG. 11-1, page 63).
4. Press ENTER plus the UP button for 5 seconds to enter
Service Mode.
5. Insert the probe from a combustion analyzer into the hole
left by the removal of the flue temperature sensor.
6. 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.
10
Start-up
Check flame and combustion
(continued)
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. When
the boiler control receives a space heating call for heat and the
boiler is not heating an indirect DHW (Domestic Hot Water)
tank, and the set point is not met, it turns on the boiler pump.
After the space heating call for heat ends and the boiler pump
was running, it continues to run for a short period of time. This
pump delay is factory set to 30 seconds.
Adjust set point temperature
1. Press the ENTER key and hold for five seconds until “u01”
appears in the middle of the screen.
2. Press the ENTER key again and “u02” will appear in the
screen along with the current SH set point.
3. Press the UP and DOWN keys to adjust the set point.
4. Press the ENTER key twice to save the new SH set point and
return to the default screen.
Set domestic hot water (DHW) operation
Verify DHW operation (if used)
When a DHW demand begins, the control will start the DHW
pump, turn off the boiler pump (if running), and modulate to
bring the outlet temperature to the DHW boiler set point.
Set boiler DHW target temperature
When in the DHW Mode, the control will modulate to maintain
the boiler outlet temperature to a set point. This set point is
set at the factory to 180°F. If a different set point is desired,
the appropriate parameter in the control must be changed.
Reference Section 11 - Operating Information for a detailed
explanation of this procedure.
Table 10A Flue Products Chart
7. Once the combustion analysis is complete, exit Service
Mode.
8. Turn the main power off to the boiler and replace the
flue temperature sensor into the heat exchanger.
9. 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
Natural Gas
Propane
CO
2
O
2
CO
2
O
2
8.0% - 10%
3.0% - 6.5%
10.0% - 11%
4.1% - 5.4%
Installation & Service Manual
