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CLEARANCES
GAS SUPPLY (continued)
Pressure Testing of the Gas Supply System
1. To check the inlet pressure to the gas valve, a 1/8in
(3.2mm) N.P.T. plugged tapping, accessible for test gauge
connection, must be placed immediately upstream of the
gas supply connection to the appliance.
2. The appliance 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 (3.5 kPa).
3. The appliance must be isolated from the gas supply piping
system by closing its individual shutoff 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).
WARNING
:
If one of the above procedures results in
pressures in excess of 1/2 psig (14in w.c.) (3.5 kPa) on the
appliance gas valve, it will result in a hazardous condition.
1. In selecting a location for installation, it is necessary to
provide adequate accessibility clearances for servicing
and proper installation.
2. Unit is supported by a wall bracket secured to the wall.
3. The minimum clearances from casing to combustible
construction is 36in (914.4mm) on top, 6in (152.4mm)
on each side and 4in (101.6mm) from the floor or from
the top surface of carpeting, tile or other floor covering
and 0in (0mm) to rear wall.
4. The minimum distance from the center of the vent cap
to the nearest outside corner or obstruction is 24in
(609.6mm).
5. The minimum wall depth is 4-1/2in (114.3mm) and the
maximum is 12in (304.8mm). The use of tubes not
supplied by the manufacturer results in unsatisfactory
performance.
WARNING
:
The nearest point of the vent cap should be
a minimum horizontal distance of 6ft (1.83m) from any
pressure regulator. In case of regulator malfunction, the
six foot distance will reduce the chance of gas entering the
vent cap.
Checking Manifold Pressure
Both Propane and Natural have a pressure regulator attached to
the gas valve. Natural gas models will have a manifold pressure
of approximately 4.0in w.c. (.996 kPa) at the valve outlet with
the inlet pressure to the valve from a minimum of 5.0in w.c.
(1.245 kPa) for the purpose of input adjustment to a maximum of
10.5in w.c. (2.61 kPa). Propane gas models will have a manifold
pressure approximately 10.0in w.c. (2.49 kPa) at the valve
outlet with the inlet pressure to the valve from a minimum of
11.0in w.c. (2.739 kPa) for the purpose of input adjustment
to a maximum of 13.0in w.c. (3.237 kPa).
A 1/8in (3.2mm) N.P.T. plugged tapping, accessible for test
gauge connection, is located on the side of the gas pressure
regulator.