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Set the burner at low fire with the adjusting screw intended for this purpose and located on the
MAXITROL modulating valve (see MAXITROL service manual); the burner should then be lit over its
entire length.
After having set the burner at low fire, the unit must be turned off and then turned on to ensure that
the burner lit over is entire length.
M511, M611 or ES371
MR212
Figure 7: Modulating valves adjustment
FOR ANY OTHER INFORMATION, REFER TO THE MAXITROL DOCUMENTATION.
5.10.
Final air temperature adjustment
Set the MAXITROL temperature selector (TD 114) to the desired final temperature (refer to local code
for maximum temperature allowed). This selector is located either in the control panel on the unit
or the remote control station.
NOTE:
When the MAXITROL temperature selector (TD 114) is installed in a remote control station, the wires
used to make the connections must be shielded wires (with metal sheath).
WARNING!
With an adequate leak detection fluid ensure that there are no gas leaks in the piping. Make the necessary
repairs if needed. Do not let the heater operate if a gas leak is detected.
6.
UNIT OPERATING SEQUENCE
6.1.
Starting up the blower
1.
Set the STOP/BLOWER/BURNER switch to BLOWER.
2.
The interlock contact provides the proof that the exhaust fan is in operation.
3.
The fresh air intake damper opens.
4.
The damper end switch closes.
5.
The blower motor starter is energized.
Adjusting screw
Adjusting screw