Airxcel SW4DEA, Operating, Installation And Service Manual

Page: 3 / 12

MAKING GAS CONNECTIONS
Connect 3/8” flare fitting gas supply to gas connection located in the control
housing. When making the gas connection, hold the gas fitting on the valve with
a wrench when tightening the flare nut. Failure to hold fitting secure could result
in a gas leak due to fitting being damaged. NOTE:
It will be necessary to remove
the grommet from the control housing, make the gas connection at the valve, then reinstall
grommet. Refer to AS5601 for gas pipe size.
WARNING!
It is imperative that grommet and gas line through grommet be caulked air
tight. If not tightly sealed, moisture and potential harmful flue products could vent through
opening and into living area of trailer. (See Figure 4.)
Before leaving: check all connections for gas leaks with soap and water. Do not use a naked
flame for detecting leaks. Ignite burner to ensure correct operation of gas valve, burner and
ignition. Observe stability of the flame. When satisfied with the heater, please instruct the user
on the correct method of operation. In case the appliance fails to operate correctly after all
checks have been carried out, refer to the authorised service provider in your area.
MAKING ELECTRICAL CONNECTIONS
12 VOLTS D.C.
(For All Models)
A. Refer to Figure 2 for location of D.C. junction box.
B. The electrical connection must be made to conform with the local authority
having jurisdiction or in the absence of such requirement with the latest
Australian electrical code.
C. Make the 12 Volt D.C. electrical connections following the wiring diagram
illustrated in Figure 5.
We recommend insulated terminals be used on all electrical connections.
MAKING ELECTRICAL CONNECTIONS
240 VOLTS A.C.
(For Models SW4DEA and SW6DEA only)
A.
Refer to Figure 2 for location of A.C. Junction box.
B.
The electrical connection must be made to conform with the local authority
having jurisdiction or in the absence of such requirement with the latest Australian
electrical code. All electrical work to be conducted by a licensed electrician.
C.
Check rating plate and wiring diagram (Figure 5A) before proceeding. Install a
fused safety switch or circuit breaker of adequate capacity between heater and
electrical power source. Attach the active and neutral wires from the fused switch
or breaker to corresponding terminals in heater junction box. An earth wire from a
well grounded source must be attached to the earth terminal in the junction box.
CAUTION: Before applying the 240 VAC power to the water heater junction
box, be sure the switch for electric element is in the “OFF” position.
WARNING!
Before the switch for the electric element is turned to the “ON” position, the
water heater tank must be filled with water. See “SAFETY WARNINGS”
MAINTENANCE
WARNING!
If the user of this appliance fails to maintain it in the condition in which it was
shipped from the factory or if the appliance is not used solely for its intended purpose or if
appliance is not maintained in accordance with the instructions in this manual, then the risk
of a fire and/or the production of carbon monoxide exists which can cause personal injury,
property damage or loss of life.
WARNING!
For your safety, all repairs should be performed by an authorised service person.
A. Burner Adjustment - All air shutters are pre-set at the factory to obtain a blue
or orange-blue flame. If necessary to adjust your air shutter, be sure to keep
this color and do not allow the burner to burn yellow or sooting will occur.
In cases where sooting has occurred, there is a possibility that this condition
may be corrected by making the correct air shutter adjustment. If the burner
flame continues to burn yellow after air shutter has been adjusted, check for an
obstruction in the burner or flue box. Also, check to be sure there is no flame
present at burner orifice or burner whenever main gas valve is closed. This can
be checked by turning the OFF/ON switch to the “OFF” position. A stiff brush is
recommended for the removal of soot deposits.
B. Frequent checks should be made of the grommet on the gas inlet to assure
tight seal. (See “Making Gas Connections”).
C. Periodically check wiring and wire connection to be sure wiring is not damaged/
frayed and that all terminals and connections are tight and in compliance with
codes (See “Making Wire Connections”).
D. The following is information regarding Hot Water Services and corrosion of the
tank in Australia. The single biggest factor is metal/water contact.
1. Mains Water Connection- For correct performance and warranty of the
unit, when connected to mains water supply, pressure must be limited
to approximately 350 kPa (50 PSI) by the use of a suitable pressure
regulator. Failure to do so will void warranty.
2. A suitable 1/2” BSPT fitting must be used for coupling HWS to water
supply.
3. Water supply is an overall factor.
4. Tanks should be drained and flushed regularly - how often depends on
soluble/silt content in water. Outback areas will be more of a problem than
major city supplies.
5. Do not use bore water. This will void your warranty as the salt contents of
bore water are extremely high.
6. The life of the anodes, which are a low valve replacement part, varies with
water quality. Anodes must be inspected periodically. Use only genuine
Suburban anode rods. Use of other anodes may void the waranty. Please
see Anode Protection Section.
7. Your water system should be operated periodically even though the van is
not being used, at least twice per week.
8. Anodes must be checked every 6 (six) months. Please see Anode
Protection Section.
SAFETY WARNINGS
WARNING!
It is imperative that the water heater tank be filled with water before
operating the water heater. Operation of the water heater without water in the tank may
result in damage to the tank and/or controls. This type of damage is not covered by the
limited warranty.
WARNING!
Hydrogen gas may result if you have not used this heater for two weeks or
more. HYDROGEN GAS IS EXTREMELY FLAMMABLE. To reduce the risk of injury under
these conditions, open the hot water faucet for several minutes at the kitchen sink before
you use any electrical appliance connected to the hot water system. If hydrogen is present,
you probably will hear an unusual sound such as air escaping through the pipe as the water
begins to flow.
Hydrogen gas may be present even after water has been drained from the tank. Open faucet
at sink and allow system to vent for several minutes (5-10 minutes). Do not smoke or have
any open flame near the open faucet. Do not attempt to light pilot or main burner. On DSI
models, be sure the switch is “OFF”.
Should overheating occur, or the gas supply fail to shut off, shut off the manual gas valve
to the appliance before shutting off the electrical supply.Do not use this appliance if any
part has been submerged under water. Immediately call an authorised service technician to
inspect the appliance and to replace any part of the control system and any gas control that
has been submerged under water
Do not alter the operation of your water heater nor change the design/construction of your
water heater. Accessories are being marketed for RV products which we do not recommend.
For your safety, only factory authorized parts are to be used on your water heater.
Periodically inspect the vent for obstructions or presence of soot. Soot is formed whenever
combustion is incomplete. This is your visual warning that the water heater is operating in
an unsafe manner. If soot is present, immediately shut the water heater down and contact
your dealer or an authorised service person.
When considering add-on rooms, porch or patio, attention must be given to the venting of
your water heater. For your safety, do not terminate the vent on your water heater inside
add-on rooms, screen porch or onto patios. Doing so will result in products of combustion
being vented into the rooms or occupied areas.
Never operate the heater if you smell gas. Do not assume that the smell of gas in your RV
is normal. Any time you detect the odor of gas, it is to be considered life threatening and
corrected immediately. Extinguish any open flames including cigarettes and evacuate all
persons from the vehicle. Shut off gas supply at LP gas bottle. (See Safety notice on front
cover of this manual.)
Pressure relief valve to be operated at least once every 6 months to remove lime deposits
and verify it is not blocked. Failure to do so may result in heater exploding. Continuous
leakage from valve may indicate a problem with unit.
NOTE:
Always open both the cold and hot water faucets when filling vehicle water tank
to allow air pockets to be forced out of the water heater. When water flows from the heater
faucets, close both faucets.
WARNING!
Do not store or use combustible materials or liquids near or adjacent to
this heater. The appliance shall not be installed in any location where flammable liquids or
vapors are likely to be present.
Be sure the power is “OFF” to the water heater ignition system during any type of refueling
and while vehicle is in motion or being towed.
WARNING!
The thermostat on your water heater is not adjustable. It is a temperature
sensing limit designed to maintain a temperature of 60°C to comply with AS/NZS 3500 Part
4.2. Water temperatures over 60°C can cause severe burns instantly or death from scalds;
therefore, be careful when using hot water. Children, disabled and elderly are at highest risk
of being scalded. Always feel water before bathing or showering. Children or infirm persons
must not adjust, light, or operate any electrical or gas controls on this unit.
THERMOSTAT AND MANUAL RESET
For all Models
The model water heaters listed above are equipped with a high temperature limit
as a cut-off device. Temperature above 82°C will cause manual reset button to trip
shutting down main burner.
To activate burner, the water temperature must be below 37°C. Push reset button
to re-activate burner.
THERMOSTAT AND MANUAL RESET
For Models SW4DEA and SW6DEA
The model water heaters listed above are equipped with a high temperature limit
as a cut-off device. Temperature above 82°C will cause manual reset button to trip
shutting down the electric element.
To activate element, the water temperature must be below 37°C. Push reset
button to re-activate the electric element.
ANODE PROTECTION
The tank in this water heater is protected by a magnesium or aluminum anode to
prolong the life of the tank. Removal of the anode will decrease tank life and will
void the warranty on the inner tank. Anode must be checked every 6 (six) months,
and replaced if below 50% of original diameter, failure to do so will void your
warranty. Use only genuine Suburban anode rods. Use of other anodes may void
the warranty. Anode performance depends on water quality, therefore are NOT
covered by warranty.
3