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ECHO
Before connecting the appliance to the gas supply
line, double check that the appliance is designed for
the gas type being used. The gas type markings are
located on the certification label and also on the
appliance's gas valve.
Check the gas pressure to insure adequate supply
per the minimum inlet pressure for the appliance.
Check pipe sizing to insure sufficient volume will
be supplied to the appliance.
Gas Supply Installation
Provide adequate clearance for proper installation
and checking of the gas connections.
Have a gas supplier or a qualified gas fitter run a
gas supply line into the gas fireplace. The line must
be properly sized and fitted according to the
installation codes. Upstream of the appliance supply
connection, the fitter shall provide an easily
accessible manual shut-off valve.
The gas supply pipe should enter the appliance case
through the opening at the rear left side. The supply
pipe should be connected to the appliance gas inlet
pipe situated at the left side of the control unit.
Supply line connection to the inlet pipe is 3/8 NPT.
Use only new black iron or steel pipes or copper
tubing if acceptable—check local codes. Note that
in USA copper tubing must be internally tinned for
protection against sulfur compounds.
Unions in gas lines should be of ground joint type.
Sealant used must be resistant to the action of all
gas constituents including LP gas. Sealant should be
applied lightly to male threads to ensure excess
sealant does not enter gas lines.
FIGURE 17 – FLAME CHARACTERISTICS
Open: Short blue flame
Closed: Tall yellow flame
Open -Short blue
flame
FIGURE 18 – CORRECT PILOT FLAME
Pressure Testing the Supply Line for Leaks
The appliance and its individual shut-off 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 (3.5 kPa). The
appliance 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 (3.5 kPa). Failure to do so will
damage the appliance's gas valve. Such damage is
not covered by the manufacturer's warranty.
26
DIRECT VENT GAS HEATER
Closed - tall
yellow flame
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