Page 56 - IOM / Rooftop Smart and Linéa™ Range
Mounting Subbase
The subbase or wallplate may be installed horizontally on
the wall or a 2 in. x 4 in. wiring box. Position the subbase or
wallplate horizontally on the wall or on a 50.8. x 101,6 mm
wiring box.
1. Position and level the subbase (for appearance only).
The thermostat operates properly even when not level.
2. Use a pencil to mark the mounting holes. See figure
67.
3. Remove the subbase from the wall and drill two 3/16
inch holes in the wall (if drywall) as marked.
For firmer material such as plaster or wood, drill two 7/
32 inch holes. Gently tap anchors (provided) into the
drilled holes until flush with the wall.
4. Position the subbase over the holes, pulling wires
through the wiring opening.
5. Loosely insert the mounting screws into the holes.
6. Tighten mounting screws.
Wiring subbase
All wiring must comply with local electrical codes and
ordinances. Follow equipment manufacturer wiring
instructions when available.
Refer to below table for terminal designations.
CAUTION
Electrical Shock Hazard.
Power supply can cause electrical shock.
Disconnect power before beginning installation.
USING THE T7300 THERMOS
USING THE T7300 THERMOS
USING THE T7300 THERMOS
USING THE T7300 THERMOS
USING THE T7300 THERMOST
T
T
T
TA
A
A
A
AT
T
T
T
T
Figure 67
MOUNTING SUBBASE OR WALLPLATE
WALL
Wall anchors (2)
Wires through wall
Mounting
holes
Mounting
screws
LEDS
TERMINAL DESIGNATION AND DESCRIPTIONS
a
: Some OEM models reverse the economiser terminal designation A1 and A2
Standard terminal
designations
Alternate terminal
designations
Typical connection
Function
Terminal type
A1
A2
a
Dry auxiliary contacts for economizer
control; A1 is normally open during
Unoccupied periods and closed during
Occupied periods.
Output
Dry contact
A2
A1
a
Dry auxiliary contacts for economiser
control (A2 is common)
Input
Dry contact
A3
-
Dry auxiliary contacts for economizer
control; A3 is normally open during
Occupied periods and closed during
Unoccupied periods.
Output
Dry contact
AS, AS
-
Discharge air sensor connection
Input
-
B
-
Heating changeover valve
Output
24V powered contact
E
K
Emergency heat relay
Output
24V powered contact
G
F
Fan relay
Output
24V powered contact
O
R
Cooling changeover valve
Output
24V powered contact
