T822/TS822 Spec Sheet

T822, TS822 HEATING/COOLING THERMOSTATS
3 68-0095-2
Fig. 1. T822/TS822 dimensions in in. (mm).
INSTALLATION
When Installing this Product...
1. Read these instructions carefully. Failure to follow them
could damage the product or cause a hazardous
condition.
2. Check the ratings given in the instructions and on the
product to make sure the product is suitable for your
application.
3. Installer must be a trained, experienced service
technician.
4. After installation is complete, check out product
operation as provided in these instructions.
CAUTION
Electrical Hazard.
Can cause personal electrical shock or equipment
damage.
Disconnect power supply before beginning installation.
Location
Locate the thermostat about 5 ft (1.5m) above the floor in an
area with good air circulation at average temperature. Do not
mount the thermostat where it can be affected by:
— drafts or dead spots behind doors or in corners.
— hot or cold air from ducts.
— radiant heat from the sun, fireplaces, or appliances.
— concealed pipes and chimneys.
— unheated (uncooled) areas behind the thermostat, such as
an outside wall.
Mounting and Wiring
1. Disconnect power supply before beginning installation.
IMPORTANT
All wiring must comply with local codes and ordi-
nances.
NOTES:
— The T822 or TS822 Thermostats are designed to
be wall or vertical outlet box mounted.
— In a 250 or 500 mV applications, use No. 14 wire,
if possible and make the run as short as possible
(consider this when selecting a location).
— For a 750 mV application, the maximum wire
lengths are shown in Table 1.
2. In replacement applications, check existing thermostat
wires for cracked or frayed insulation. Replace any
wires in poor condition.
NOTE: If wire is plastered into the wall, make a hole next to
the wires and loosen them so they can be pushed
back into the wall later.
3. In new installations, run wiring, if necessary, to the
thermostat location.
4. Connect the wires to the terminals on back of thermo-
stat. See Fig. 2-8 for internal schematics and typical
hookup diagrams.
5. Remove thermostat cover by pulling outward from
indention on the right or left side of cover until it snaps
free of thermostat base. Carefully remove and discard
foam plastic shipping insert protecting switch and
bimetal assembly during shipping.
6. Set the adjustable heat anticipator indicator (select
models) to match the current draw of the primary heat-
ing control (see Heat Anticipator Setting).
7. Push excess wire back through the hole and plug any
opening with insulation to prevent drafts that can affect
thermostat performance.
8. Loosely fasten the thermostat to the wall or outlet box
with a screw through the top mounting hole. Do not
tighten.
9. Level the thermostat exactly using a level device.
Tighten the mounting screws.
IMPORTANT
This thermostat is calibrated at the factory, mounted
at true level. Any inaccuracy in leveling during the
mounting causes control point deviation.
10. Replace thermostat cover.
•
60
•
70
•
80
•
90
•
1-1/2
(38)
3-1/4
(83)
4-3/4
(121)
2-7/8
(73)
M2094
4
Table 1. Wire Length.
Wire
Size
Maximum Length
2-Wire Cable
Maximum Combined
L e n g t h
2-Single Wires
(ft) (m) (ft) (m)
No. 18 30 9.0 60 18.0
No. 16 50 15.0 100 30.0
No. 14 80 24.5 160 49.0