Installing Thermostat - Williams 4003532 Owner's Operation And Installation Manual

INSTALLING
FURNACE
(Continued)
201842
Installing in Masonry Wall
You can mount both models in a masonry wall. Follow the steps below to install.
1. Cut opening in wall. Make opening 14 1/4" wide by 13 5Is" high for 25,000
Btu/Hr models. Make opening 20 5h6" wide by 14 3/8" high for 40,000 Btu/Hr
models. IMPORTANT'. You must install furnace horizontally. Do not install
furnace vertically.
2. Secure furnace to wall with toggle bolts or hook bolts set in mortar.
3. Insert furnace into opening. Do this from inside the room. Secure furnace to wall
with toggle bolts or hook bolts.
4. On outside of wall, caulk opening between the cabinet and the rough edges of
opening. You can also use mortar to seal opening.
INSTALLING THERMOSTAT
WARNING
Unplug furnace before installing thermostat.
Mount the thermostat directly on the furnace or on a wall in another part of the
room. If you have solid or masonry walls, mount the thermostat on the furnace.
Mounting Thermostat to Furnace
1. Unplug furnace.
2. Locate red and white thermostat wires coming out of side of furnace. These
wires are labeled "Thermostat."
3. Cut thermostat wires to desired length.
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,
page 10).
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.
White Wire /_
j.
ir
Figure 3 - Connecting Thermostat Wires to Thermostat
Continued B