Service manual

150158 Rev. 2 August - 2010
7
MULTIPLE HEATER
INSTALLATION
INSTALLATION DIAGRAMS
INSTALLATIONS WHERE HEATERS ARE
MANIFOLDED
All heaters should have approximately the same input rate. To
manifold a high input heater with a low input heater will
result in the lower input heater running excessively. It is
preferable for all heaters to be the same model.
All heaters must be evenly spaced to provide identical number
of turns, length and size of pipes in each manifold. This is
absolutely necessary to insure a balanced condition to all
heaters in the installation.
INSTALLATION
Using Back Connect
After completing all gas connections, check each gas con-
nection and fitting for leaks. Use a soap and water solution or
a commercial leak detector fluid.
NEVER USE MATCHES
OR OPEN FLAME WHEN CHECKING FOR GAS LEAKS.
The water heater and its individual gas shut off valve must be
disconnected from the gas supply piping system during any
pressure testing or that system at test pressures in excess of 1/2
psig (14” W.C.) or 3.5kPa.
The water heater must be isolated from the gas supply piping
system by closing its individual manual shut-off valve during
any pressure testing of the gas supply piping system at test
pressures equal to or less than 1/2 psig (14”W.C.) or 3.5kPa.
If the gas valve is subjected to pressure exceeding 1/2 psig, the
damage to the gas valve could result in an extremely hazardous
condition. If this has occurred, the gas valve must be replaced.
Contact your dealer for service. It is recom-mended that all
service work be done by a qualified service agency.
INSTALLATION SAFETY WARNING
L.P. UNITS
Liquified petroleum (L.P.) gas is heavier than air and will
remain at floor level if there is a leak. Basements, crawl
spaces, closets and areas below ground level will serve as
pockets for accumulation of leaking gas. Before lighting, sniff
at floor level.
IF YOU SMELL GAS, follow applicable instructions on
Front Cover or Page 13. DO NOT OPERATE APPLIANCE
UNTIL LEAKAGE IS CORRECTED.
WARNING
NEVER OPERATE AN EMPTY OR PARTIALLY FILLED
WATER HEATER
ANODES
This water heater is supplied with anode rods designed to
extend tank life and reduce corrosion. Anodes emit a weak flow
of electrical current through the water to protect the tank.
When present in “highly active” water, a “rotten egg” odor
may be produced from the gases from the anodes, mixing with
the water. This is not the fault of the water heater. Chlorination
of the water supply system should minimize this condition.
(Consult your telephone directory for local water treatment
specialists).
REMOVAL OF AN ANODE ROD WILL
VOID THE WARRANTY.
FIGURE 6