BEFORE INSTALLATION
The Excel 10 Chilled Ceiling Controller is available in the
following three models:
1. W7763C—with integral setpoint adjustment,
temperature sensor, and bypass push-button.
2. W7763D—with integral setpoint adjustment only.
3. W7763E—no integral setpoint adjustment, sensor, or
push-button.
The models all have similar housings and mounting pro-
cedures.
IMPORTANT
It is recommended that devices be kept at room
temperature for at least 24 hours before applying
power to allow any condensation resulting from low
shipping/storage temperatures to evaporate.
INSTALLATION
W7763 Chilled Ceiling Controllers can be mounted on a
panel or wall or onto a standard 60-mm wall outlet box using
No. 6 (3.5-mm) screws. See Fig. 1 for outside dimensions
and Fig. 2 for subbase mounting dimensions.
The controller can be mounted in any orientation desired;
however, for thermal reasons, W7763C Controllers must not
be mounted on a ceiling.
1-13/16 (46)
Fig. 1. Excel 10 Chilled Ceiling Controller outside dimensions in in. (mm).
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W7763C,D,E CHILLED CEILING
INSTALLATION INSTRUCTIONS
Wiring
All wiring must comply with applicable electrical codes and
ordinances. Refer to job or manufacturers' drawings for
details.
Power
Input power provided must be 24 Vac (±20%), 50 or 60 Hz.
For US installation, power must come from an energy-limited
Class II Power Source (transformers must not exceed
100 VA). More than one W7763 Controller can be powered
by a single transformer.
CAUTION
Turn off power prior to connecting to or removing con-
nections from any terminals to avoid electrical shock
or equipment damage.
Use the heaviest gauge wire available, up to 14 AWG
2
(2.5 mm
) with a minimum of 18 AWG (1.0 mm
wiring.
4-9/16 (116)
Excel 10
CONTROLLERS
2
) for all power
3-3/8
(86)
95- 7485- 3