GSW SUPERFLUE POWER VENTED GAS FIRED WATER HEATER - Manual (Page 11)

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Initial Start Up
1. With all gas valves closed and the power cord NOT plugged
into an electrical outlet, make sure that the water heater is
filled with water and that the cold water supply valve is open.
2. Open the manual shut off valve in the gas supply line and turn
the water heater’s gas control switch to the “ON” position.
Wait for five minutes. Smell around the water heater for any
possible gas leak, Check close to the floor and around the
burner door area as some gases, especially propane, are
heavier than air.
IF YOU SMELL GAS:
Ø Do not try to operate the water heater or any other
appliance.
Ø Do not operate any electrical switch; do not use a telephone.
Ø Immediately call your gas supplier from a neighbor’s
telephone. Follow the gas supplier’s instructions.
Ø If you cannot contact your gas supplier, call the fire
department.
3. To start the water heater, set the thermostat to the mid
point arrow on the dial (approximately 120 ° F, 50 ° C) and plug
in the power cord. The system will start automatically.
4. The gas valve will first do an initial diagnostic to check that
it is working properly. Once proven, the control will energize
the blower assembly and power through the pressure and
high temperature safety switches.
5. With pressure and temperature safety switches proven,
power is sent to the ignition system. The ignitor will glow until
it reaches optimum temperature. Full glow takes
approximately 15 seconds.
6. With ignitor proven, the control will open the internal gas
valve, allowing gas to flow to the burner. Main flame is
established and envelops the flame sensor rod. This rod
monitors flame stability. If the flame fails the system will
shut down.
7. The heater will continue to operate until the water
temperature reaches the thermostat setting. At that time
the burner will shut down, while the blower continues to
operate for a brief post-purge sequence.
8. The water heater will remain off until the water temperature
drops sufficiently to reactivate the system or the
thermostat is set to a higher requirement.
TURNING WATER HEATER OFF
1. Turn thermostat to its lowest setting.
2. Turn control switch to the “OFF” position.
3. Turn gas supply valve “OFF”.
4. If the blower is still running, wait for it to stop.
5. Unplug electrical cord.
Performance Checks
1. Burner Manifold Pressure - The burner operates at a manifold
gas pressure of 3.5" W.C. for natural gas and 10.0" W.C. for
propane gas. A _” N.P.T. port is provided on the gas valve
control for connection to a gauge to measure the pressure
(See Figure 11). The control valve has an internal pressure
regulator. Do not confuse the manifold pressure with the
supply inlet pressure. Return port plug upon completion of
tests.
2. Checking Input - Never exceed input shown on the rating
plate. Ask your gas supplier for the heating value of the gas
you are using. Check the input by ”clocking” the gas meter.
Make sure no other appliances are operating when the test is
being done. To ensure accuracy, clock enough gas so that the
time is greater than 60 seconds. Use the following formula
to check input. Check that your gas pressures are as
previously stated.
Input Gas Heating Value* x Cubic Feet/Meters clocked
=
(BTU/Hour) Seconds clocked
*
Gas Heating Value in BTU/cubic feet or cubic meters
1 cubic meter = 35.31 cubic feet
3. Checking burner flame - Superflue Water Heaters may use
either a sheet metal or cast iron burner. Access the burner
by lifting off the outer gas door and sliding open the inner
door located at the bottom of the water heater.
• for water heaters having a sheet metal burner and burning
natural gas, a constant, steady, soft blue flame should be
visible coming from the burner head
• for water heaters having a sheet metal burner and burning
propane gas, the flame will be a constant, steady blue with a
brighter blue being visible right at the burner head. The very
ends of the flame may be tipped with yellow. This is more
noticeable on higher input units.
• Noisy, hard blue flames, flames lifting from the burner,
luminous or yellow stringy flames indicate an incorrect setup.
Check that the unit is using the correct gas. This information