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T7200/T7300/Q7300
INSTALLATION
4. Secure the subbase or wallplate with the screws pro-
vided. Do not fully tighten the screws.
5. Level the subbase or wallplate for appearance only.
Leveling is not required for operation. Securely tighten the
screws.
WIRE SUBBASE OR WALLPLATE
IMPORTANT: Most equipment manufacturers size system
transformers for the equipment installed at the fac-
tory. Before connection, be sure that the system trans-
former can supply the T7200 OR T7300 and Q7300
with adequate power (6 VA). If less than 6 VA is
available, install a separate 24 Vac transformer.
CAUTION
Disconnect power supply before beginning instal-
lation to prevent electrical shock or equipment
damage.
All wiring must comply with local electrical codes and
ordinances.
IMPORTANT: Use 18 gauge, solid-conductor wire when-
ever possible. If using 18 gauge stranded wire, no
more than 10 wires can be used. Do not use larger
than 18 gauge wire.
Follow equipment manufacturer's wiring instructions
when available. See Fig. 23-46 for wiring diagrams. To
wire subbase, proceed as follows:
1. Connect the correct wires to the terminals as shown in
applicable diagram; the terminal barrier allows straight or
wraparound wiring connection. See Fig. 12. A letter code is
located near each terminal for identification. Typical termi-
nal designation and wiring connections are listed in Table
6. Connect remote temperature sensor or override switch
module.
NOTE: If a remote sensor is used, be sure that the Q7300 DIP
switch 5 is placed in the OFF position.
63-4038—7
CAUTION
Never install more than one wire per terminal
unless using factory-supplied jumper with spade
terminal.
Fig. 12—Barrier configuration. Keep wiring
restricted to recessed area surrounding termi-
nals.
FOR STRAIGHT
INSERTION –
STRIP 5/16 in. [8 mm]
RESTRICT
WIRING TO
THIS AREA
FRONT VIEW OF
TERMINAL AREA
WIRING TO BE BELOW
THIS SURFACE
CROSS-SECTIONAL VIEW OF
TERMINAL AREA
2. Firmly tighten each terminal screw. Loose or intermit-
tent wire connections can cause inconsistent system opera-
tion.
3. Fit wires as close as possible to the subbase. Push
excess wire back into the hole.
4. Plug hole with nonflammable insulation to prevent
drafts from affecting the thermostat.
Refer to Fig. 23-46 for typical hookups. When system
installation is complete, perform the initial power up proce-
dure in the Checkout section.
8
FOR WRAPAROUND –
STRIP 7/16 in. [11 mm]
TOP SURFACE
OF SUBBASE
M3062
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