Vermont Castings RADVTCB - Manual (Page 8)

8 8
Radiance Direct Vent Gas Heater
20012697
Gas Specifications
Max. Min.
Input Input
Model Fuel Gas Control BTU/h BTU/h
RADVT Series Nat Millivolt 38,000 25,000
RADVT Series Prop Millivolt 36,000 25,000
RADVTC Series Nat Comfort Control 38,000 25,000
RADVTC Series Prop Comfort Control 36,000 25,000
Weight: Fully assembled; 350 lbs.
Natural LP (Propane)
Inlet Minimum 5.5” w.c. 11.0” w.c.
Inlet Maximum 14.0” w.c. 14.0” w.c.
Manifold Pressure 3.5” w.c. 10” w.c.
Gas Inlet and Manifold Pressures
The installation of your Vermont Castings stove
must conform with local codes, or in the absence of
local codes, with the National Fuel Gas Code ANSI
Z223.1/NFPA 54 - latest edition, or CSA B149.1
Installation code. (EXCEPTION: Do not derate this
appliance for altitude up to 2,000 (610 m) for natural
gas and 4,500 feet (1,370 m) for LP Gas. Maintain
the manifold pressure at 3.5” w.c. for Natural Gas and
10.0” w.c. for LP Gas.
High Elevations
Input ratings are shown in BTU per hour and are
certified without deration for elevations up to
2,000 feet (610 m) for natural gas and 4,500 feet
(1,370 m) for LP gas above sea level.
In the USA installations with elevations above
2,000 feet (610 m) for natural gas and 4,500 feet
(1,370 m) for LP gas must be in accordance with
the current ANSI Z223.1/NFPA 54 and/or local
codes having jurisdiction.
In Canada, please consult provincial and/or local
authorities having jurisdiction for installations at
elevations above 2,000 feet (610 m) for natual gas
and 4,500 feet (1,370 m) for LP gas.
WARNING: Improper installation, adjustment,
alteration, service or maintenance can cause in-
jury or property damage. Refer to this manual for
correct installation and operational procedures.
For assistance or additional information consult
a qualified installer, service agency, or the gas
supplier.
Horizontal Termination
The vent must rise vertically a minimum of 24” (610mm)
off the top of the unit, before the first elbow. The hori-
zontal run may extend up to 20’ (6m) and include a
vertical rise of up to 40’ (12m). (Fig. 7) Horizontal termi-
nation must also meet the criteria shown in Figures 10
through 12.
• Approved vent systems must terminate above and
including the heavy line in Figure 7.
• Two 45˚ elbows may be substituted for each single
90˚ elbow.
• With a rise between 2’ - 5’, one 90˚ or two 45˚ elbows
may be used.
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Vertical Run (in feet)
(Measured from the appliance flue collar to the top of the vent
pipe.)
Horizontal Run (in feet)
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ST134b
Radiance
Horizontal
vent run
6/07
ST134a
Fig. 7 Horizontal vent termination window.
May use up to
three 90° Elbows
One 90°
Elbow
Unacceptable
Venting Configuration
No Restrictor Plate
Required