Empire Comfort Systems VFLL38FP, Инструкция по установке и руководство пользователя, Страница: 12 / 48

32707-8-0714 Page 12
GAS SUPPLY
The gas pipeline can be brought in through the right or left side of
the appliance. The insert has a Flexline with shutoff valve located on
the left side when facing the unit. See Figures 17 and 18. Consult
the current National Fuel Gas Code, ANSI Z223.1 CAN/CGA-B149
(.1 or .2) installation code.
Recommended Gas Pipe Diameter
Pipe Length Schedule 40 Pipe
Inside Diameter
Tubing, Type L
Outside Diameter
Nat. L.P. Nat. L.P.
0-10ft
0-3m
1/2"
12.7mm
3/8"
9.5mm
1/2"
12.7mm
3/8"
9.5mm
11-40ft
4-12m
1/2"
12.7mm
1/2"
12.7mm
5/8"
15.9mm
1/2"
12.7mm
41-100ft
13-30m
1/2"
12.7mm
1/2"
12.7mm
3/4"
19mm
1/2"
12.7mm
101-150ft
31-46m
3/4"
19mm
1/2"
12.7mm
7/8"
22.2mm
3/4"
1.9 mm
Caution : Never use plastic pipe. Check to confirm whether your
local codes allow copper tubing or galvanized.
Notice : Since some municipalities have additional local codes, it
is always best to consult your local authority and installation code.
The use of the following gas connectors is recommended:
— ANS Z21.24 Appliance Connectors of Corrugated Metal Tubing
and Fittings.
— ANS Z21.45 Assembled Flexible Appliance Connectors of Other
Than All-Metal Construction
The above connectors may be used if acceptable by the authority
having jurisdiction. The state of Massachusetts requires that a
flexible appliance connector cannot exceed three feet in length.
Figure 17
Installing the Main Gas Cock
Each appliance should have its own manual gas cock.
A manual main gas cock should be located in the vicinity of the unit
and can be easily accessed after assembly. Where none exists,
or where its size or location is not adequate, contact your local
authorized installer for installation or relocation.
Compounds used on threaded joints of gas piping shall be resistant
to the action of liquefied petroleum gases. The gas lines must be
checked for leaks by the installer. This should be done with a soap
solution watching for bubbles on all exposed connections, and if
unexposed, a pressure test should be made.
Never use an exposed flame to check for leaks. Appliance must
be disconnected from piping at inlet of control valve and pipe
capped or plugged for pressure test. Never pressure test with
appliance connected; control valve will sustain damage!
Notice : The millivolt gas controls are equipped with a captured screw
type pressure test point, therefore it is not necessary to provide a
1/8" test point up stream of the control.
When using copper or flex connector use only approved fittings.
The appliance and it’s individual shut off valve must be disconnected
from supply piping system during any pressure testing of that system
at test pressures in excess of 1/2 psig (3.5kPa).
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 (3.5kPa).
Attention! If one of the procedures results in pressures in excess of
1/2 psig (14" w.c.) (3.5 kPa) on the fireplace gas valve, it will result
in a hazardous condition.
Figure 18
Shut off valve must be accessible after installation.
Checking Manifold Pressure
MILLIVOLT VALVES (VFLL(38,48)FP30)
Natural gas will have a manifold pressure of approximately 3.5" w.c.
for maximum input or 1.6" w.c. for minimum input at the pressure
regulator outlet with the inlet pressure to the pressure regulator
from a minimum of 4.5" w.c. for the purpose of input adjustment to
a maximum of 10.5" w.c.
Propane gas will have a manifold pressure approximately 10.0"w.c.
(2.49kPa) for maximum input or 6.3"w.c. for minimum input at the
pressure regulator outlet with the inlet pressure to the pressure
regulator from a minimum of 11.0"w.c. for the purpose of input
adjustment to a maximum of 13.0"w.c.
INTERMITTENT PILOT VALVES (VFLL(38,48)FP90)
Natural gas will have a manifold pressure of approximately 3.5"
w.c. at the pressure regulator outlet with the inlet pressure to the
pressure regulator from a minimum of 7.0" w.c. for the purpose of
input adjustment to a maximum of 10.5" w.c.
Propane gas will have a manifold pressure approximately 10.0"w.c.
at the pressure regulator outlet with the inlet pressure to the pressure
regulator from a minimum of 11.0"w.c. for the purpose of input
adjustment to a maximum of 13.0"w.c.
A test gage connection is located downstream of the gas appliance
pressure regulator for measuring gas pressure. The connection is
a 1/8 inch N.P.T. plugged tapping.
Millivolt Control Valve
The valve regulator controls the burner pressure which should be
checked at the pressure test point. Turn captured screw counter
clockwise 2 or 3 turns and then place tubing to pressure gauge over
test point (Use test point “A” closest to control knob). See Figure
45. After taking pressure reading, be sure and turn captured
screw clockwise firmly to re-seal. Do not over torque. Check
for gas leaks.