3
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
These appliances and their individual shut-off
valves
must be disconnected
from the gas
supply piping system during any pressure
testing of that system at pressures
greater
than
1/2 psig (3.5 kPa)
.
These appliances must be isolated from the
gas supply piping system (
by closing their
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 (3.5 kPa).
Orifice Sizes - Sea Level to High Altitude
(All Models)
These appliances are tested and approved for
installation at elevations of 0-4500 feet (0-1372
meters) above sea level using the standard
burner orifice sizes (marked with an "*" in
Table 6
)
. For elevations above 4500 feet,
contact your gas supplier or qualified service
technician . Install the appliance according to
the regulations of the local authorities having
jurisdiction and, in the USA, the National Fuel
Gas Code NFPA 54 / ANSI Z223.1 - latest edition
or, in Canada, the CAN1-B149.1 and .2 codes
- latest edition.
Electronic Models
Electronic models have a fixed rate gas valve.
Input of electronic models is shown in
Table 2.
Electronic Models with Fixed Rate Gas Valve
Natural and Propane Gas
Model Series
Input Rate (BTU / HR)
SSDVT/R-3328
17,500
Table 2
Inlet Gas Supply Pressure
(all models)
Fuel #
Minimum
Maximum
Natural Gas
5.0" WC
(1.24 kPa)
10.5" WC
(2.61 kPa)
Propane
11.0" WC
(2.74 kPa)
13.0" WC
(3.23 kPa)
Table 3
Gas Pressure - All Models
Tables 3, 4 and 5
show the appliances' gas
pressure requirements:
Manifold Gas Supply Pressure
(millivolt models)
Fuel #
Low
High
Natural
Gas
(Lo) 2.2" WC
(.55 kPa)
(Hi) 3.5" WC
(.87 kPa)
Propane (Lo) 6.3" WC
(1.57 kPa)
(Hi) 10.0" WC
(2.49 kPa)
Table 4
Test gauge connections are provided on the
front of the millivolt gas control valve, identi-
fied IN for the inlet and OUT for the manifold
side. A 1/8" NPT Test gauge connection
is provided at the inlet and outlet side of
the electronic gas control valve.
Burner Orifice Sizes
Elevation 0-4500 feet ( 0-1372 meters)
Model
Series
Natural
Gas
drill size (inches)
Propane
Gas
drill size (inches)
SSDVT/R-3328
#45
*
(0.048")
*
* Standard size installed at factory
Table 6
Manifold Gas Supply Pressure
(electronic models)
Fuel #
Manifold Pressure
Natural Gas
3.5" WC (.87 kPa)
Propane
10.0" WC (2.49 kPa)
Table 5
Input (BTU) Manually-Modulated Gas
Valves (millivolt models)
NATURAL & PROPANE GAS
Models
Input Rate (BTU / HR)
SSDVT/R-3328
17,500 high
13,500 low
Table 1
These appliances are designed to operate on
natural or propane gas only. To operate on
Propane Gas a field converion is necessary
(see
Pages 34 to 36
).
Do not use any other
fuels. The use of other fuels, or combination
of fuels, will degrade the performance of this
system and may be dangerous.
These fireplaces are designed as supplemen-
tal heaters. Therefore, it is advisable to have
an alternate heat source when installed in a
dwelling.
Millivolt Models -
The millivolt appliances are
manually controlled and feature a spark igniter
(piezo) that allows the appliance's pilot gas to
be lit without the use of matches or batteries.
This system provides continued service in the
event of a power outage.
Millivolt models come standard with a manu-
ally-modulated gas valve; flame appearance and
heat output can be controlled at the gas valve.
The BTU Input for these appliances is shown
in
Table 1.
