BACNET® FIXED FUNCTION THERMOSTAT
31-00093—01
2
Location
Do not install the thermostat where it can be affected by:
— drafts or dead spots behind doors and in corners.
— hot or cold air from ducts.
— radiant heat from sun or appliances.
— concealed pipes and chimneys.
— unheated (uncooled) areas such as an outside wall
behind the thermostat.
IMPORTANT
To avoid electrical interference, which can cause
erratic performances, keep wiring runs as short as
possible and do not run thermostat wires adjacent
to the line voltage electrical distribution systems.
Use shielded cable. The cable shield must be
grounded only at the controlled equipment case.
WHEN USED TO SENSE ROOM TEMPERATURE
Install the thermostat about 5 ft. (1.5m) above the floor in
an area with good air circulation at average temperature.
(See Fig. 2.)
WHEN NOT USED TO SENSE ROOM TEMPERATURE
When using the remote-mounted temperature (and
humidity) sensor(s) to sense ambient conditions, install
the thermostat in an area that is accessible for setting and
adjusting the temperature and settings.
Fig. 2. Typical location of thermostat
or remote-mounted sensor.
Mounting Wallplate
The thermostat can be mounted horizontally on the wall or
on a 4 in. x 2 in. (101.6 mm x 50.8 mm) wiring box.
1.
Position and level the wallplate (for appearance only).
2.
Use a pencil to mark the mounting holes (see Fig. 3).
3.
Drill two pilot holes in the wall, on the marks. For dry-
wall, drill 3/16-in. holes. For firmer material such as
plaster, drill 7/32-in. holes. Gently tap anchors (pro-
vided) into the pilot holes until flush with the wall.
4.
Pull the wires through the wiring opening, and posi-
tion the wallplate over the mounting holes.
5.
Insert the screws into the holes and tighten.
Fig. 3. Wallplate dimensions.
Wiring the Wallplate
IMPORTANT
All wiring must comply with local electrical codes
and ordinances.
NOTE:
Maximum (and recommended) wire size is 18-
gauge. Do not use wire smaller than 22-gauge.
Follow equipment manufacturer wiring instructions when
available. A letter code is located near each terminal for
identification.
CAUTION
Power must not be connected while wiring.
Wiring a unit that is powered may result in
electrical shock and/or equipment damage.
1.
Connect wires to the terminal blocks. See Fig. 4 for
terminal assignments and Table 1 for terminal
descriptions.
2.
Securely tighten each screw.
3.
Push excess wire back into the hole.
4.
Plug the hole with non-flammable insulation to pre-
vent drafts from affecting the Fixed Function Ther-
mostat.
5.
Check for loose or frayed wire that may cause a short.
5 FEET
(1.5 METERS)
YES
NO
NO
NO
M4823A
