Installing Thermostat - Suburban SA25N Owner's Operation And Installation Manual

INSTALLING THERMOSTAT

INSTALLATION
(Continued)
WARNING: Unplug furnace be-
fore installing thermostat.
5. 25,000 BTU/Hr Model: Use a proper-
Mount the thermostat directly on the fur-
sized drill bit. Drill holes through wall
nace or on a wall in another part of the
and into studs at marked locations.
room. If you have solid or masonry walls,
40,000 BTU/Hr Model: Use a proper-
mount the thermostat on the furnace.
sized drill bit. On wall stud side of
M ounting Thermostat to Furnace
opening, drill holes through wall and
into studs at marked locations. On for Built-in Thermostat Operation
other side, drill holes through wall
1. Unplug furnace.
material.
2. Locate red and white thermostat
6. Insert furnace into opening. Do this
wires coming out of side of furnace.
from inside the room. Secure furnace
These wires are labeled "Thermo-
to wall with four large screws
stat."
provided.
3. Cut thermostat wires to desired
7. On outside of wall, caulk opening be-
length.
tween the cabinet and the rough
edges of opening.
4. Route thermostat wires through
slot/hole in side of thermostat
mounting plate. Then route wires
through 5/8" diameter hole in center
of plate (see Figure 4).
5. Connect thermostat wires to the two
terminal screws on back of thermostat
(see Figure 3). Connect red wire to
"R" terminal. Connect white wire to
"W" terminal.
Figure 3 - Connecting Thermostat Wires to
Thermostat
Figure 3 - Connecting Thermostat Wires to
Thermostat
Figure 2 - Wall Openings and Screw
Locations
6. Attach thermostat to thermostat
Installing in M asonry W all mounting plate with screws provided
(see Figure 4). IMPORTANT: Note
You can mount both models in a masonry
mounting plate position in Figure 4.
wall. Follow the steps below to install.
Correctly position mounting plate for
1. Cut opening in wall. Make opening 14
your model furnace.
1/4" wide by 13 5/8" high for 25,000
7. Insert thermostat mounting plate be-
BTU/Hr models. Make opening 20
tween wall and cabinet flange. Line up
5/16" wide by 14 3/8" high for 40,000
top notch on mounting plate with top
BTU/Hr models. IMPORTANT: You
screw on flange (see Figure 5).
must install furnace horizontally. Do
IMPORTANT: Thermostat for 25,000
not install furnace vertically.
BTU/Hr model mounts on right side of
2. Secure furnace to wall with toggle
furnace (see Figure 5). Thermostat
bolts or hook bolts set in mortar.
for 40,000 BTU/Hr model mounts on
left side of furnace (see Figure 5).
3. Insert furnace into opening. Do this
from inside the room. Secure furnace
8. Insert screw in cabinet flange and
to wall with toggle bolts or hook bolts.
thermostat mounting plate and tighten
firmly. IMPORTANT: Make sure
4. On outside of wall, caulk opening be-
tween the cabinet and the rough thermostat wires do not touch
edges of opening. You can also use combustion chamber.
mortar to seal opening.
Figure 4 - Attaching Thermostat to
Thermostat Mounting Plate
Figure 5 - Inserting Thermostat Mounting
Plate Between Wall and Cabinet Flange
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5. Drill a 1/2" hole through the wall at
INSTALLATION
thermostat mounting location.
(Continued)
6. From attic, feed thermostat wires
through hole in ceiling plate until wires
Locating and M ounting
reach thermostat location.
Therm ostat on W all
7. Make a small hook with a piece of stiff
1. Locate thermostat 4 1/2 to 5 feet
wire. Run wire hook through 1/2" hole
above the floor on an inside wall away
in wall. Hook thermostat wires. Pull
from any heat sources. The
wires through hole in wall. Make sure
thermostat needs to sense average
6" of wires stick out.
room temperature. Avoid the
8. Drive a small finishing nail in ceiling
following:
above furnace.
HOT SPOTS
25,000 BTU/Hr Model - Drive nail
above right side of furnace.
Concealed pipes or ducts
Fireplaces 40,000 BTU/Hr Model - Drive nail
Registers above left side of furnace. Pull nail out
TV sets and radios and push a small stiff wire through
Lamps or direct sunlight hole. This helps you locate wire
Kitchen routing location when in attic.
COLD SPOTS 9. Repeat steps 3 and 4 above.
Concealed pipes or ducts
10. Feed thermostat wires from attic to
Stairwells (drafts) or doors (drafts)
furnace through 1/2" hole in ceiling
Unheated rooms on other side of wall
wall plate.
DEAD SPOTS
11. Connect thermostat wires from attic to
Behind doors thermostat wires on furnace. Connect
red wires together, then connect
Corners and alcoves
white wires together. Use wire nuts to
2. Before installing thermostat, inspect
make connections. IMPORTANT:
the wall, floor, and attic areas. Make
Make sure thermostat wires do not
sure there are no pipes, wiring or
touch combustion chamber.
anything else that would interfere with
installing thermostat. Do not mount
M ounting the Therm ostat to W all
thermostat to stud. If there are any
1. Connect thermostat wires to the two
obstructions, choose a new location.
terminal screws on back of thermostat
3. Provide two 18-gauge insulated
(see Figure 6). Connect red wire to
stranded wires for the thermostat
"R" terminal. Connect white wire to
wire. Also provide two wire nuts, and
"W" terminal.
two wall anchors. There is a red and a
2. Push any excess wire back through
white thermostat wire coming from
hole in wall and plug hole with
the furnace. The extra thermostat
insulation to prevent drafts. Drafts
wires you furnish attach to these
affect the thermostat operation.
wires. Make sure you furnish a red
and a white wire. This will insure
3. Use thermostat base to mark
correct hookup. Purchase enough
mounting screw locations.
thermostat wire to go from the furnace
4. Drill proper-sized holes for wall
to the thermostat location. Do not cut
anchors.
and splice this wire. The thermostat
wire must be unbroken.
5. Attach thermostat to wall using
screws provided (see Figure 7)
Routing Therm ostat Cable
.
All wiring must meet local codes. The
following instructions cover routing the
wire through the attic. You can run wiring
from a basement or crawl space.
1. Unplug furnace.
2. Before drilling hole in wall, drive a
small finishing nail through ceiling
directly above thermostat location.
Pull nail out and push a small stiff wire
through hole. This helps you locate
thermostat mounting location when in
attic.
3. In attic, locate stiff wire. Drill 1/2" hole
in center of ceiling wall plate next to
stiff wire. Remove wire.
Figure 6 - Connecting Thermostat Wires
4. Probe through drilled hole in wall plate
to Thermostat
with a stiff wire to make sure there are
no pipes, wiring, or anything else
blocking the way for thermostat wires.
If you find blockage, choose new
location for thermostat.
Figure 7 - Mounting Thermostat to Wall
CONNECTING TO GAS
SUPPLY
WARNING: A qualified service
person must connect furnace to gas
supply. Follow all local codes.
WARNING: Never connect fur-
nace to private (non-utility) gas
wells. This gas is commonly known
as wellhead gas.
WARNING: Unplug furnace be-
fore connecting to gas supply.
CAUTION: Use only new, black
iron or steel pipe. Copper tubing may
be acceptable in certain areas.
Check local codes. Use pipe large
enough in diameter to allow proper
gas volume to furnace. If pipe is too
small, undue loss of pressure will
occur. Refer to chart on page 8 or 9.
CAUTION: Lightly apply pipe joint
sealant to male threads before
connecting. Use pipe joint sealant
that is resistant to liquid petroleum
(LP) gas.
All piping must comply with local codes
and ordinances or with the National Fuel
Gas Code (ANS Z223.1 NFPA No. 54),
whichever applies.
You can connect furnace to gas supply at
front of furnace (inside) or at rear of
furnace (outside).
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