Caution, Figure 45, Step 6. connecting gas line – TOA Electronics SSDVT-4035CNM User Manual
Page 26: Figure 46
 
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
26
Electronic Wiring Diagram (Honeywell) Showing Blower Wiring for Optional FBK-100, FBK-200 & FBK-250 Kits
Schematic Representation Only
Relay Module C/W FBK-250 only. Plug blower 
into J-Box receptacle for FBK-100 or FBK-200 
application. See View A for J-Box wiring.
Optional Blower
*OFF/ON Switch 
(Integral with 
Gas Valve)
Honeywell
Electronic
Gas
Valve
120 VAC
Primary
Secondary
Optional Control Switch
Junction Box
Pilot Burner
Assembly
BL
BL
Field Wired
Factory 
Wired
BK = BLACK BL = BLUE
R = RED W = WHITE
G = GREEN
BK
W
BK
BK
BL
R
GROUND
24 V
Transformer
 View A 
J-Box Wiring when 
using unit mounted 
relay module.
BK
W
G
C
A
V
0
2
1
Igniter
Connector
* Leave the OFF/ON switch, which is 
integral with the gas valve, in the ON 
position.
** Optional Control Switches: Wall 
Switch, Wall Thermostat or Remote 
Control Receiver.
Notes:
1. If any of the original wire as supplied 
must be replaced, use Type AWM 105°C 
- 18 gage wire ONLY.
2. 120 VAC, 60 Hz - Less than 3 Amps.
Caution: label all wires prior to 
disconnection when servicing controls. 
Wiring errors can cause improper and 
dangerous operation.
Junction Box
Tab Intact
Tab 
Broken
Plug blower
into this 
receptacle
n
e
e
r
G
-
d
n
u
o
r
G
* Wall-mounted
ON/ OFF Blower 
Switch or Variable 
Speed Control Switch. 
Blower
Ground
e
t
i
h
W
-
l
a
r
t
u
e
N
120 VAC - Black
Green
Ground
Screw
White
Green
Neutral 
Side of
Receptacle
Hot
Side of
Receptacle
Red
Black
J-BOX WIRING FOR 
WALL SWITCH 
BLOWER CONTROL
Figure 45
CAUTION
Ground supply lead must be connected to the wire attached to the green 
ground screw located on the outlet box. See Figure 47. Failure to do so 
will result in a potential safety hazard. The appliance must be electrically 
grounded in accordance with local codes or, in the absence of local codes, 
the National Electrical Code, ANSI/NFPA 70-latest edition. (In Canada, the 
current CSA C22-1 Canadian Electrical Code).
Step 6. CONNECTING GAS LINE
Make gas line connections. All codes require a 
shut-off valve mounted in the supply line. Figure 
46  illustrates two methods for connecting the 
gas supply. The fl ex-line method is acceptable 
in the U.S., however, Canadian requirements 
vary depending on locality. Installation must 
be in compliance with local codes.
These appliances are equipped with a gas fl ex 
line for use (where permitted) in connecting 
the appliance to the gas line. A gas fl ex line 
is provided to aid in attaching the direct vent 
appliance to the gas supply. The gas fl ex line 
can only be used where local codes permit. See 
Figure 46 for fl ex line description. The fl ex line 
is rated for both natural gas and propane gas. 
A manual shut off valve is also provided with 
the fl ex line.
The incoming gas line should be piped into
the valve compartment and connected (see 
Figures 46 & 47). The millivolt control 
valve has a 3/8" (10 mm) NPT thread 
inlet port. The electronic control valve 
has a 1/2" (13 mm) NPT thread inlet port 
and is fi tted with a 1/2" x 3/8" (13 mm x 
10 mm) NPT fi tting.
Secure all joints tightly using appropriate 
tools and sealing compounds (ensure propane 
resistant compounds are used in propane 
applications).
Optional: Seal around the gas line to prevent 
cold air leakage.
Note:The gas supply line must be installed in accor-
dance with building codes by a qualifi ed installer 
approved and/or licensed as requed by the locality. 
In the Commonwealth of Massachusetts, installa-
tion must be performed by a licensed plumber or 
gas fi tter.
Gas
Valve
3/8" NPT x
Flare Fitting
3/8" Flex Tubing
3/8" Nipple
3/8" Union
3/8" Close Nipple
3/8" Shut-off Valve
1/2" x 3/8"
Reducer
Gas
Stub
1/2" x 3/8" Flare
Shut-off Valve
Gas Flex Line Connector
*Sediment
Trap
3"
Min
*A Sediment Trap is recommended to prevent moisture 
and debris in gas line from damaging the valve.
Figure 46 -
GAS CONNECTION