Unit installation

25
TABLE Vll
PILOT BURNER INFORMATION
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OPERATION
IMPORTANT
A qualified person must perform the initial firing of the heater. At
this time the user should not hesitate to ask the individual any
questions which they may have in regard to the operation and
maintenance of the unit.
An Operational Checklist is included at the rear of this manual.
By using this checklist the user may be able to make minor
operational adjustments and avoid unnecessary service calls.
However, the user should not attempt repairs which are not listed
under the USER column.
GENERAL
NEVER OPERATE THE HEATER WITHOUT FIRST BEING
CERTAIN IT IS FILLED WITH WATER AND A TEMPERATURE
AND PRESSURE RELIEF VALVE IS INSTALLED IN THE RELIEF
VALVE OPENING OF THE HEATER.
SHOULD OVERHEATING OCCUR OR THE GAS SUPPLY FAIL
TO SHUT OFF, TURN OFF THE MANUAL GAS CONTROL VALVE
TO THE APPLIANCE.
CAUTION
Before proceeding with the operation of the unit make sure the
water heater and system are filled with water and all air is
expelled.
FILLING
1. Close the heater drain valve by turning handle clockwise.
2. Open a nearby hot water faucet to permit the air in the system
to escape.
3. Fully open the cold water inlet pipe valve allowing the heater
and piping to be filled.
4. Close the hot water faucet as water starts to flow.
5. The heater is ready to be operated.
WARNING
THE GAS VALVE MUST HAVE BEEN IN THE OFF POSITION
FOR AT LEAST 5 MINUTES. This waiting period is an important
safety step. Its purpose is to permit gas that may have
accumulated in the combustion chamber to clear. IF YOU DETECT
GAS ODOR AT THE END OF THIS PERIOD DO NOT PROCEED
WITH LIGHTING. RECOGNIZE THAT GAS EVEN IF IT SEEMS
WEAK, MAY INDICATE PRESENCE OF ACCUMULATED GAS
SOMEPLACE IN THE AREA WITH RISK OF FIRE OR
EXPLOSION. SEE THE FRONT PAGE FOR STEPS TO BE TAKEN.
All gas and water lines leak tested and open.
Read SEQUENCE OF OPERATION section of this manual prior
to lighting and operating this appliance.
With above conditions satisfied, light the unit in accordance with
the instructions on the Operating label attached to the heater. If
label instructions are not legible - determine which gas valve the
appliance is equipped with and use the applicable OPERATING
INSTRUCTIONS as follows:
IF PILOT FLAME GOES OUT - Main burners will extinguish and
pilot will attempt reignition.
DAMPER MUST BE IN FULL OPEN POSITION FOR PILOT AND/
OR MAIN BURNER IGNITION TO OCCUR - See SEQUENCE
OF OPERATION for complete description.
Each heater is equipped with a Honeywell Ignition Module. This
module will try to prove pilot for 90 seconds. If pilot is not proven
within the 90 secs, the unit will retry after 5 minutes. This cycle will
continue until pilot is proven.
If pilot does not ignite when system calls for heat, check for pilot
ignition spark at pilot assembly. Refer to OPERATIONAL
CHECKLIST and SEQUENCE OF OPERATION.
ADJUSTMENTS
ON INITIAL STARTUP SOME ADJUSTMENTS ARE
NECESSARY.
1. CHECK MANIFOLD AND INLET GAS PRESSURES.
2. TO ADJUST PILOT FLAME - FOLLOW “PILOT BURNER”
PROCEDURE UNDER “SERVICE INFORMATION” SECTION.
3. DAMPER OPERATION CHECK - CHECK AT LEAST ONE
COMPLETE BURNER OPERATION - WHEN THERMOSTAT
IS SATISFIED - BURNERS WILL SHUT OFF AND DAMPER
WILL AUTOMATICALLY “CLOSE”. ON CALL FOR HEAT -
THE DAMPER WILL AUTOMATICALLY “OPEN” AND THE
IGNITION SEQUENCE DESCRIBED ABOVE WILL BEGIN.
SEE “SEQUENCE OF OPERATION”.
SEQUENCE OF OPERATION
The following information will describe the Sequence of Operation
for this appliance.
A. ELECTRICAL POWER “OFF”:
In the case of 1) initial installation, 2) maintenance or service
shutdown, or 3) a “power failure” condition: the flue damper will
be in the “open” position (parallel to the direction of flow of flue
gas). The flue damper device is equipped with a springwound
mechanism which springs “open” in a de-energized condition.
Follow “Lighting and Operating” instructions on the appliance for
start-up procedure.
For purpose of definition in this section and throughout manual
the term:
A. Flue Damper “Open” - refers to the position of the flue damper
blade when the blade is “parallel” to the normal direction of