NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
12
Figure 20
Purging Air from Appliance
Purge air from appliance by holding gas control valve down in the pilot
position until pilot will light (see Figure 20).
DO NOT LIGHT A MATCH IF
YOU SMELL GAS.
Light a match then allow gas fl ow to pilot. If the Match
“blows”, there is air in the line (purge line). If the fl ame is straight and tall,
there is no gas pressure.
Purging Air from Supply Line
a. Turn gas supply line valve off.
b. Loosen setscrew at inlet pressure tap on control valve (see Figures 32 & 33).
c. Turn gas supply line valve on.
d. When gas fl ows, turn supply valve off.
e. Close the inlet pressure tap.
Figure 18
Factory Built Fireplace Installation Diagram
Storm Collar
Roof
Flashing
Remove or Secure
Damper Open
Note: Final gas connection should be made after unit is in place to avoid
damage to line when pushing the unit into position.
Step 9. CONNECTING GAS LINE
G
AS CONNECTION
This appliance is equipped with a gas fl ex line for use (where permit-
ted) in connecting the unit to the gas line. A gas fl ex line is provided
to aid in attaching the B-Vent appliance to the gas supply. The gas fl ex
line can only be used where local codes permit. See Figure 19 for fl ex
line description. The fl ex line is rated for both natural and propane gas.
A manual shut off valve is also provided with the fl ex line. The gas con-
trol valve is located in the lower control compartment. To access the
valve, open the lower access door. The millivolt control valve has a 3/8"
(10 mm) NPT thread inlet port fi tting.
Make gas line connections. All codes require a shut-off valve mounted in
the supply line. Figure 19 illustrates two methods for connecting the gas
supply. The fl ex-line method is acceptable in the U.S., however, Canadian
requirements vary depending on locality. Installation must be in compliance
with local codes.
Figure 19
4" diameter vent,
type B-Vent or listed
gas fuel type vent
liner (listed to UL
1777)
SEE FIREPLACE
REQUIREMENTS
ON PAGE 4
The fl exible vent pipe must
NOT be allowed to sag behind
insert or in fi replace fl ue.
Flashing
Termination Cap
Liner
2 Hose
Clamps
Vertical
Term. Cap
Collar
Vent Kits, HO906 (25')
& H0907 (35') includes:
1 ea. fl ex liner
1 ea. fl ashing
1 ea. collar
2 ea. hose clamps
(see table 9)
Liner Requirements:
Exhaust Vent = 4" Dia.
B-Vent or Liner listed to
UL 1777
Vertical Height Min.
= 12 ft. (3.66 M)
Vertical Height Max.
= 40 ft. (10.7 M)
AIR PURGING PROCEDURES MUST BE PERFORMED BY A QUALIFIED
TECHNICIAN ONLY.
Step 10. PURGING AIR
When lighting the appliance for the fi rst time,
it will take a few minutes to purge air from the
gas line. Once purging is complete, the pilot
and burner will light and operate as indicated
in the instruction manual. Subsequent light-
ings of the appliance will not require such
purging. Inspect the pilot fl ame (remove logs,
if necessary, handling carefully).
IMPORTANT
Under no circumstances, may separate sections of
concentric fl exible vent pipe be joined together.
Gas Valve
3/8" NPT x
Flare Fitting
3/8" Flex Tubing
3/8" Nipple
3/8" Union
3/8" Close Nipple
3/8" Shut-Off Valve
1/2" x 3/8"
Reducer
Gas
Stub
1/2" x 3/8" Flare
Shut-Off Valve
Gas Flex Line Connector
Summary of Contents for EVB125
Page 19: ......
