Gas Connection; High Altitude Installations; Air Shutter Setting - Hearth & Home B41L-AU Installation Manual

D. Gas Connection
Note: Have the gas supply line installed in accordance with
local building codes by a qualified installer approved and/or
licensed as required by the locality.
Note: Before the first firing of the appliance, the gas supply
line should be purged of any trapped air.
Note: Consult local building regulations to properly size the
gas supply line leading to the (Rp 1/2 in.) hook-up at the unit.
Incoming gas line should be piped into the valve compart-
ment and connected to the ISO 7-Rp 1/2 (BSP Rp 1/2)
threaded gas inlet connection on the manual shutoff valve.
IMPORTANT NOTICE:
ALL Hearth & Home Technologies gas appliances)
1. 1/2 in. GAS LINE: Run through cavity 70 mm
above finished hearth level, NOT RIGID, NOT
CLIPPED, with minimum 500 mm into cavity and
120 mm back from plaster face.
2. PVC (COMPOSITE) GASLINE must terminate
minimum 500 mm short of gas heater. Copper pipe
MUST be the final connection to the gas heater.
3. ISOLATING SWITCH: Location within 1 metre
of fireplace, subject to mantelpiece etc. Check to
ensure it remains clear of any mantelpiece instal-
lation.
Leak test all gas line points and the gas control valve prior
to and after starting the gas appliance.
E. High Altitude Installations
NOTICE: If the heating value of the gas has been reduced,
these rules do not apply. Check with your local gas utility
or authorities having jurisdiction.
When installing above 2000 ft. (610 m) elevation:
Reduce input rate 4% for each 1000 ft. (305 m) above
2000 ft. (610 m).
(Items 1, 2 and 3 applies to
Hearth & Home Technologies • B41L-AU Installation Manual • 2570-980 Rev. C • 7/20
F. Air Shutter Setting
The Natural Gas Shutter setting is pre-set for the mini-
mum (vertical and horizontal) one elbow horizontally ter-
minating application. For appliances intended to operate
with Propane Gas, a conversion kit is required and the air
shutter is to be adjusted during the conversion and shut-
ter verification process.
Air shutter settings should be adjusted by a qualified
service technician at the time of installation. Adjust air
shutter for longer vertical runs. See Figure 9.4.
• Loosen the 1/4 in. (6 mm) screw.
• Twist the air shutter to adjust.
• Tighten the 1/4 in. (6 mm) screw.
Shutter Setting Verification / Flame Appearance
• After 15 minutes, the flames will be a yellow/blue mix.
The front flames may be blue at this time.
• After 30 minutes, the flames should be yellow with
some blue flames near the burner ports.
• After 1 hour, the flame will be at is maximum maturity.
NOTICE: If flames lack the desired yellow appearance,
adjust the shutter to a more "closed" position. If flames
are dark orange with smoky tips, adjust the shutter to a
more "open" position.
Figure 9.4 Air Shutter Location
Air Shutter Settings
Glass Media Option
or Driftwood Option
B41L-AU (NG) 1/8 in. (3 mm)
B41L-AU (LP) 1/4 in. (6 mm)
Traditional
Log Option
3/16 in. (5 mm)
5/16 in. (8 mm)
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