Installation guide

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MANIFOLD
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PIPE PLUG
Fig. 13--Burner Assembly
C99019
BURNER FLAME
BURNER
f _F)ANIFOLD
C99021
Fig. 14---Monoport Burner
START*UP
PROCEDURE 1--CHECK FOR REFRIGERANT LEAKS
Proceed as follows to locate and repair a refi'igerant leak and to charge the unit:
I. Locate leak and make sure that refrigerant system pressure has been relieved and reclaimed from both high- and low-pressure ports.
2. Repair leak following Refrigerant Service procedures.
NOTE: Install a filter drier whenever the system has been opened for repair.
3. Add a small charge of R-22 refi'igemnt vapor to system and leak-test unit.
4. Recover refrigerant from refrigerant system and evacuate to 500 microns if additional leaks are not found.
5. Charge unit with R-22 refrigerant, using a volumetric-charging cylinder or accurate scale. Rq[er to unit ratingplure[br required charge.
Be sure to add extra refi-igerant to compensate for internal volume of filter drier.
PROCEDURE 2--START*UP HEATING AND MAKE ADJUSTMENTS
z_ CAUTION: Complete the required procedures given in the Pre-Start-Up section before starting the unit.
Do not jumper any safety devices when operating the unit.
Make sure that burner orifices are properly aligned. Unstable operation may occur when the burner orifices in the manifold are misaligned.
Follow the lighting instructions on the heating section operation label (located inside the burner or blower access door) to start the heating section.
NOTE: Make sure that gas supply has been purged, and that all gas piping has been checked for leaks.
A. CHECK HEATING CONTROL
Start and check the unit for proper heating control operation as follows (see furnace lighting instructions located inside burner or blower access
panel):
I. Place room thermostat SYSTEM switch in the HEAT position and the fan switch is placed in AUTO. position.
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