Eco-King HWB-299, Installation And Service Manual

Page: 27 / 124

E93.1801EN171 HWB installation manual 27
DO NOT TIGHTEN FITTINGS WITHOUT SUPPORTING THE GAS VALVE, A BACKING WRENCH MUST BE
USED
Install a manual “Equipment Shut-Off Valve”. The valve
must be listed by a nationally recognized testing lab.
Should overheating occur or the gas supply fail to shut
off, turn off the manual gas control valve. The gas line
piping can safely be removed from the appliance for ser-
vicing.
Leak test the gas pipe from the water heater up to the
gas pressure regulator.
Carefully vent the gas pipe (outside in open air) before
putting appliance into operation for the 1st time;
A sediment trap must be provided di-
rectly below the water heater.
Condensate drain connection
The condensate drain is placed at the center and at the bottom of
the water heater and has a ¾ inch hose discharge. Connect this
flexible hose to the sewer system.
Use only plastic parts with the condensate drain. Metal lines are
not allowed.
Blockage of this drain might damage the water heater. The drain
connection is correct when the condensate can be seen flowing
away, e.g. using a funnel. Any damage that might occur, when the
drain is not installed correctly, is not covered by the warranty of
the water heater.
There should be an open connection of the condensate hose into
the sewage system. A possible vacuum in the sewage system
must never give the opportunity to suck on the water heater’s con-
densate drain hose.
The condensate the water heater produces is acidic and should be neutralized before disposal.
If not properly neutralized it may harm some floor drains and/or pipes, particularly those that
are metal. Ensure that the drain, drainpipe, and anything that will come in contact with the
condensate can withstand the acidity or neutralize the condensate before disposal.
Damage caused by failure to install a neutralizer kit or to adequately treat condensate
will not be the manufacturer’s responsibility.
Open connection
to the sewer.
WARNING
Strain on the gas valve and fittings may result in vibration, premature component failure and leakage and may
result in a fire, explosion, property damage, serious injury or death.
Do not use an open flame to test for gas leaks. Failure to follow these instructions may result in fire.
When performing a pressure test on the gas line piping, the following guidelines must be followed.
*The water heater and its individual shutoff valve must
be disconnected from the gas supply piping system
during any pressure testing of that system at test pressures in excess of 1/2 PSIG (3.45 kPa).
*
The water heater must be isolated from the gas supply piping system by closing its individual manual shutoff
valve during any pressure testing of the gas supply piping system at test pressures equal to or less than 1/2
PSIG (3.45 kPa).
Gas pressure switch
If protection from gas pressure faults is demanded an optional kit is available. This kit consists of two gas
pressure switches, with connections to the gas valve and cabling to connect to the burner controller. The gas
pressure switches are factory set to the values for natural gas.
WARNING
4
in
(110m
m
)
m
in
im
um
Cap
Nipple
Tee fitting
Union
Manual shutoff valve
Gas supply inlet
To equipment inlet
WARNING