Making Water Connections; Making Gas Connections; High Altitude Deration - Suburban SW6DEL Installation And Operation Manual

MAKING WATER CONNECTIONS

A. Water connections are made at the rear of the water heater. See Figure 4.
Connect the hot and cold water lines to the 1/2" female pipe fitting provided on
rear of tank. These fittings are marked "HOT" and "COLD". NOTE: Inside each
fitting is a plastic fill tube. Its purpose is to enhance water circulation. DO NOT
REMOVE PLASTIC FILL TUBE.
IMPORTANT: Use a pipe thread compound suitable for potable water or pipe
thread tape on all connections to assure they will not leak.
B. For ease of removal, it is suggested that a pipe union be installed in each
water line.
C. Fill tank with water. Open both hot and cold water faucets to expel air from
tank. When tank is filled and water flows from faucets, close both faucets and
check all connections for leaks.
CAUTION: If you use air pressure to check for leaks, the pressure must not
exceed 30 PSI (in accordance with NFPA 1192).
NOTE: After leak testing, drain water from tank.

MAKING GAS CONNECTIONS

A. Connect a 3/8" gas supply line to the 3/8 flare fitting at gas valve 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.
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 5.)
B. Turn on gas and check all fittings and connections for leaks, using a soap and
water solution. Correct even the slightest leak immediately.
WARNING! Do not use an open flame to check for leaks!

HIGH ALTITUDE DERATION

Suburban water heaters are certified by nationally recognized testing laboratories
for operation without modifications at altitudes up to 4,500 feet. Operation above
this elevation may require derating by 4 percent for every 1,000 feet above
sea level. For example, at 8,000 feet, the water heater should be derated
approximately 32 percent.
If the unit is not properly derated, lack of sufficient oxygen for combustion
may produce improper burner operation. Pilot outage caused by burner lift-off
or sooting from a yellow burner may occur indicating the possibility of carbon
monoxide. You may also notice a lack of efficiency in heating the water because
of incomplete combustion of the burner at these higher altitudes.
Consult with the local gas company, your dealer, an RV service agency or
Suburban Manufacturing Company for proper derating of the unit. Change-
out of the orifice (derating) should be done by the dealer or a qualified service
SW6DEL
Figure 3
HOT
COLD
GROMMET
(GAS INLET)
5
Figure 4
CONTROL HOUSING
ILLUSTRATED SHOWING
INSIDE OF HOUSING
GAS VALVE
CAULK AND SEAL GROMMET (INCLUDING SLIT
AND TUBING) ALL AROUND AIR TIGHT
Figure 5