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Gas Pressure—All Models
Tables 2 and 3 show the appliances' inlet and
manifold gas pressure requirements:
Fuel #
Minimum
4.5 in. WC
Natural
(1.12 kPa)
Gas
11.0 in. WC
Propane
(2.74 kPa)
Table 2: Inlet Gas Supply Pressure
Fuel #
Low
Natural
1.6 in. WC
Gas
(0.40 kPa)
6.3 in. WC
Propane
(1.57 kPa)
Table 3: Manifold Gas Supply Pressure
Test gauge connections are provided on the
front of the gas control valve (identified IN
for the inlet and OUT for the manifold side).
The control valves have a 3/8 in. (10 mm)
NPT thread inlet and outlet side of the valve
f i r e - p a r t s . c o m
(refer to Figure 1).
Propane tanks are at pressures that will
cause damage to valve components. Verify
that the tanks have step down regulators to
reduce the pressure to safe levels.
The appliance and its appliance main gas
valve must be disconnected from the gas
supply piping system during any pressure
testing of that system at test pressures in
excess of 1/2 psi (3.5 kPa).
The appliance must be isolated from the
gas supply piping system by closing its
equipment shutoff valve during any pressure
testing of the gas supply piping system at
test pressures equal to or less than 1/2 psi
(3.5 kPa).
Orifice Sizes—Sea Level to High Altitude
(All Models)
This appliance is tested and approved
for installation at elevations of 0–4500 ft
(0–1372 m) above sea level using the
standard burner orifice sizes (marked with an
"*" in Table 4). For elevations above 4500 ft,
contact your gas supplier or qualified service
technician.
Deration—At higher elevations, the amount
of BTU fuel value delivered must be reduced
by either:
• Using gas that has been derated by the
gas company.
• Changing the burner orifice to a smaller
size as regulated by the local Authorities
Having Jurisdiction and by the (USA)
National Fuel Gas Code NFPA 54/ANSI
Z223.1—latest edition or, in Canada, the
CAN/CGA-B149.1 codes—latest edition.
4
SUPERIOR
• DIRECT-VENT GAS FIREPLACES (SDV35-N-2) • INSTALLATION INSTRUCTIONS
®
Install the appliance according to the
regulations of the local authorities having
jurisdiction and, in the USA, the National
Fuel Gas Code NFPA 54—latest edition /
Maximum
ANSI Z223.1-2009 or, in Canada, the CAN/
CGA-B149.1—latest edition.
10.5 in. WC
Flame breadth, height and width will diminish
(2.61 kPa)
4% for every 1,000 feet of altitude. Gas Valve
Diagram (see Figure 1).
13.0 in. WC
(3.23 kPa)
In Canada - CAN/CGA-2.17-M91 (R2009)
(high altitude): THE CONVERSION SHALL
BE CARRIED OUT BY A MANUFACTURER'S
AUTHORIZED REPRESENTATIVE, IN
High
ACCORDANCE WITH THE REQUIREMENTS
3.5 in. WC
OF THE MANUFACTURER, PROVINCIAL
(0.87 kPa)
OR TERRITORIAL AUTHORITIES HAVING
JURISDICTION AND IN ACCORDANCE
10.0 in. WC
WITH THE REQUIREMENTS OF THE
(2.49 kPa)
CAN/CGA-B149.1 OR CAN/CGA-B149.2
INSTALLATION CODES.
Model
Series
SDV35-2
Table 4: Burner Orifice Sizes
Elevation 0–4500 ft ( 0–1372 m)
Main Gas Control Knob
IN
Manifold Pressure Tap
Inlet Pressure Tap
Figure 1: SIT Millivolt Gas Valve
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Nat.Gas
Propane
drill size (inches)
drill size (inches)
#44 (0.086 in.)*
#55 (0.052 in.)*
60J80•
19L52•
* Standard size installed at factory
• Part /Cat. Number
Pilot Adjustment
Screw
OFF/PILOT/ON
OUT
HI/LO Variable
Flame Height
Adjustment
REQUIREMENTS FOR THE
COMMONWEALTH OF MASSACHUSETTS
These fireplaces are approved for installation
in the US state of Massachusetts if the
following additional requirements are met:
• Install this appliance in accordance with
Massachusetts Rules and Regulations
248 C.M.R.
• Installation and repair must be done by
a plumber or gas fitter licensed in the
Commonwealth of Massachusetts.
• The flexible gas line connector used shall
not exceed 36 in. (92 cm) in length.
• The individual manual shut-off must be a
T-handle type valve.
Massachusetts Horizontal Vent Requirements
in the Commonwealth of Massachusetts,
horizontal terminations installed less than
seven (7) feet above the finished grade
must comply with the following additional
requirements:
• A hard wired carbon monoxide detector
with an alarm and battery back-up must
be installed on the floor level where the
gas fireplace is installed. The carbon
monoxide detector must comply with
NFPA 720, be ANSI/UL 2034 listed and be
ISA certified.
• A metal or plastic identification plate must
be permanently mounted to the exterior
of the building at a minimum height of
eight (8) feet above grade and be directly
in line with the horizontal termination.
The sign must read, in print size no less
than one-half (1/2) inch in size, GAS VENT
DIRECTLY BELOW. KEEP CLEAR OF ALL
OBSTRUCTIONS.
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