Trek SSDVST-CNM User Manual
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
3
New York City, New York (MEA)
Installation of these fi replaces are approved
for installation in New York City in the US state
of New York.
for installation in New York City in the US state
of New York.
Input (BTU) Manually-Modulated Gas
Valves (millivolt models)
Models
Fuel Type
Input Rate
(BTU / HR)
SSDVST
SSDVPF
SSDVPF
Natural or
Propane Gas
37,500 high
30,000 low
Table 1
Electronic Models - Electronic models have
a fi xed rate gas valve. The BTU input for the
electronic models is shown in Table 2.
a fi xed rate gas valve. The BTU input for the
electronic models is shown in Table 2.
BTU Input - Electronic Models
Gas Pressure - All Models
Tables 3, 4 and 5 show the appliances' gas
pressure requirements:
pressure requirements:
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
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-
fi ed 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
front of the millivolt gas control valve, identi-
fi ed 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.
Manifold Gas Supply Pressure
(electronic models)
Fuel #
Maximum Manifold Pres-
sure
Natural Gas
(Hi) 3.5" WC (.87 kPa)
Propane
(Hi) 10.0" WC (2.49 kPa)
Table 5
Input (BTU) - Fixed Rate
(electronic models)
Models
Fuel Type
Input Rate
(BTU / HR)
SSDVST
SSDVPF
SSDVPF
Natural or
Propane Gas
37,500
Table 2
• •
Burner Orifi ce Sizes (all models)
Elevation
Feet (meters)
Natural Gas
drill size (inches)
Propane Gas
drill size (inches)
0-4500
(0-1372)
#44 (.086")
*
60J8001 •
#55 (.052")
*
19L5201 •
Table 6
* Standard size installed at factory
• Part /Cat. Number
• • Each model has two burners & 2 Orifi ces
• Part /Cat. Number
• • Each model has two burners & 2 Orifi ces
Gas Valve Diagrams - See Figure 1 for Millivolt
models and Figure 2 For Electronic Models.
models and Figure 2 For Electronic Models.
HI
LO W
HT
PT
HT
PT
PILO
T
PIL
O
T
ON
it
OFF
IN
OUT
Manifold Pressure Tap
Inlet Pressure Tap
SIT Millivolt Gas Valve
Pilot Adjustment
Screw
Screw
HI/LO Variable
Flame Height
Adjustment
Flame Height
Adjustment
Main Gas Control Knob
OFF/PILOT/ON
Figure 1
Orifi ce Sizes - Sea Level to High Altitude
(All Models)
(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 qualifi ed 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.
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 qualifi ed 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.
Figure 2
Honeywell Electronic Gas Valve
F
F
O
NI
P
S
I
N
O
L
O
R
T
N
O
C
GI
N
TI
TI
ER
Manifold Pressure
Port
Port
ON / OFF Switch
Inlet
Pressure
Port
Pressure
Port
Electronic Gas
Control Valve
Control Valve
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).
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).
These appliances and their individual shut-
off valves must be disconnected from the
gas supply piping system during any pres-
sure testing of that system at pressures
greater than 1/2 psig (3.5 kPa).
off valves must be disconnected from the
gas supply piping system during any pres-
sure testing of that system at pressures
greater than 1/2 psig (3.5 kPa).
These fi replaces are designed as supplemen-
tal heaters. Therefore, it is advisable to have
an alternate heat source when installed in a
dwelling.
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.
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; fl ame appearance and
heat output can be controlled at the gas valve.
The BTU Input for these appliances is shown
in Table 1.
ally-modulated gas valve; fl ame appearance and
heat output can be controlled at the gas valve.
The BTU Input for these appliances is shown
in Table 1.