Clearances; Gas Supply - Empire Comfort Systems VFH-33M-1 Installation Instructions And Owner's Manual

excess of 1/2 psig (14" w.c.) (3.5 kPa) on the appliance gas valve,
it will result in a hazardous condition.
Checking Manifold Pressure
VFH-33R Natural gas will have a manifold pressure of
approximately 3.5" w.c. (.871kPa) for maximum input or 1.7"
w.c. (.423kPa) for minimum input at the pressure regulator outlet
with the inlet pressure to the pressure regulator from a minimum
of 4.5" w.c. (1.120kPa) for the purpose of input adjustment to a
maximum of 10.5" w.c. (2.614kPa). VFH-33M and VFH-33T
Natural gas will have a manifold pressure of approximately 6.0"
w.c. (1.49kPa) at the pressure regulator outlet with the inlet
pressure to the pressure regulator from a minimum of 7.0" w.c.
Minimum Wall and Ceiling Clearances
Figure 4

Clearances

When facing the front of the appliance the minimum clearances
to combustible construction (material) are the following:
1. Clearances from the right side or left side of the fireplace
opening to any combustible wall or material should not be
less than 8 inches.
2. Clearances from the top of the fireplace opening to the
ceiling should not be less than 36 inches.
Page 10
GAS SUPPLY (continued)
CLEARANCES
(1.74kPa) for the purpose of input adjustment to a maximum of
10.5" w.c. (2.615kPa). VFH-33R Propane gas will have a manifold
pressure approximately 10.0"w.c. (2.49kPa) for maximum input
or 6.3"w.c. (1.568kPa) for minimum input at the pressure regulator
outlet with the inlet pressure to the pressure regulator from a
minimum of 11.0"w.c. (2.739kPa) for the purpose of input
adjustment to a maximum of 13.0"w.c. (3.237kPa). VFH-33M
and VFH-33T Propane gas will have a manifold pressure
approximately 10.0"w.c. (2.49kPa) at the pressure regulator
outlet with the inlet pressure to the pressure regulator from a
minimum of 11.0"w.c. (2.739kPa) for the purpose of input
adjustment to a maximum of 13.0"w.c. (3.237kPa).
A test gage connection is located downstream of the gas appliance
pressure regulator for measuring gas pressure. The connection is
a 1/8 inch (3mm) N.P.T. plugged tapping.
Mantel Clearances for Built-in Installation
Figure 5
If your installation does not meet the above minimum clearances
you must:
— raise the mantel to acceptable height or
— remove the mantel
VFH-33