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5
Operating Instructions
5.1
General instructions
5.2
Lighting instructions
46
5.1.1
To fill the water heater
1. Close the water heater drain valve by turning the knob or
valve stem clockwise. If alternative water connections are
provided but not used, make certain they are plugged (i.e.
side connections).
2. Open the cold water supply shut-off valve.
3. Open several hot water taps to allow air to escape from the
system.
4. When a steady stream of water flows from the taps, the
water heater is filled. Close the taps and check for water
leaks at the water heater drain valve, combination
temperature and pressure relief valve and the hot and cold
water connections.
5.1.2
Sequence of operation
1. A call for heat from thermostat
2. Blower ON
3. Pressure switch contacts closed (no exhaust pipe blockage)
4. Blower pre-purge
5. Igniter warm-up
6. Main burner ON
7. Flame signal confirmed
8. Thermostat satisfied
9. Main burner OFF
10. Blower post-purge
5.2.1
For your safety read before lighting
Warning
If you do not follow these instructions exactly, a fire or
explosion may result causing property damage,
personal injury or loss of life.
I
This appliance does not have a pilot. It is equipped with an
ignition device which automatically lights the burner. Do not
try to light the burner by hand.
II BEFORE OPERATING smell all around the appliance for
gas. Be sure to smell near to the floor because some gas is
heavier than air and will settle on the floor.
WHAT TO DO IF YOU SMELL GAS
•
Do not try to light any appliance
•
Do not touch any electric switch
•
Do not use any telephone in the building
•
If you cannot reach your gas supplier, call the fire
brigade.
III Turn off mains power to the water heater.
IV Do not use this appliance if any part has been under water.
Immediately call a qualified service technician to inspect the
appliance. Replace any part of the control system and any
gas control which has been under water.
Issue 2 14/07/16
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