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5.2 Maintenance – Every 3 Months
Burner Air Adjustment: The air shutter has been factory preset to the proper operation between sea level and
2000 feet elevation at standard conditions, (60 degree F ambient water, and air temperatures). In cooler
temperatures or higher altitudes, it may be necessary to adjust the air supply to the combustion chamber. This
adjustment will maximize burner efficient operation or excessive soot buildup on the heat exchanger coil. A
smoke spot test is recommended during any air shutter and band adjustment. If you do not have the equipment
to perform a smoke spot test, follow the procedures listed below.
a)
The water heater must be operating and heating water.
b)
Loosen the locking screw on the shutter.
c)
Check for smoke from the heat exchanger exhaust. If smoke is not present, slowly close the Air Shutter
by moving the dial counterclockwise (CCW) to a lower number. Continue moving the dial until smoke
appears.
d)
Record the setting.
e)
Open Air Shutter by two increments. (Example- If Air Shutter was set at 2, and then move it to 4).
f)
Repeat steps "E" and "F" until a smoke puff is noticed. Record the Air Shutter setting.
g)
The difference between the recorded settings in step "D" and "F" is the combustion window. Set the dial
half way between these settings.
NOTE: If you are unable to detect a setting on either step "C" or step "G", more or less air may be needed
to achieve a proper combustion window. Loosen the bolt and open the Air Band in ¼ increments. Repeat
steps "C"- step "G" until proper combustion window is achieved.
Test Fuel Pressure – This procedure should be performed by an authorized service technician.
Test Water Temperature – Turn unit on and begin heating the water. Adjust the temperature control valve to the
proper temperature. Once the desired temperature is reached, take a thermometer and test the discharge water.
There should be a 5-10 degree temperature difference between the gauge and discharge depending on the
location of the test discharge water.
NOTE: To get the most accurate reading attach discharge hoses and then measure the temperature.
95226-01
This document contains information proprietary to REEVES EMS, LLC and is intended solely for use by its customers. No portion of this document may
be reproduced for release to a third party without written consent from REEVES EMS, LLC
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REEVES EMS, LLC
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