Product data

15
3. Thermostat:
The thermostat shall be commercial grade to
control unit operation and shall provide single
speed fan capability. Automatic changeover
from cooling or heating shall be provided
(4-pipe systems only).
4. Motorized Valve Accessory:
The motorized valve shall be a two-position,
spring return two or three-way valve.
5. Microprocessor Control:
a. The microprocessor control shall include a
custom designed microprocessor fitted to the
cassette to enable room conditions to be
maintained at a user defined set point.
b. Microprocessor controller shall allow auto-
matic control of fan speed based on demand
in space. The controller, either an infrared
transmitter or pendant transmitter, also
allows programming of a weekly operating
schedule.
6. Electric Heat:
Single-stage electric heat shall include fitted
heating elements manufactured for maximum
surface area and lower working temperature for
improved reliability. Thermal cutout protection
switches are fitted to the electric heat circuit to
protect against overheating. The optional elec-
tric heating elements are available with the
208/220/230-v model units only.
7. Hot Water Coil Freeze Protection Sensor:
The freeze protection sensor shall be available
for mounting to prevent freezing of the hot
water coil assembly. When the sensor detects a
freeze up condition, it will force the flow control
valve open and prevent the unit fan(s) from
running.
8. Disconnect Switch:
The non-fused disconnect switch shall be fac-
tory mounted on the exterior of the control
panel and sized for the full load amperage of
the unit to enable the unit to be disconnected
from the power supply prior to any
maintenance.
9. Shroud:
A shroud shall be available as a sheet metal
cover used to cover unit housing when the unit
is not mounted in a drop or false ceiling. The
shroud is painted Sky White with a hammer-
tone finish.
10. Wall-Mounted Pendant:
A wired, wall-mounted pendant for communica-
tion to the microprocessor controller shall be
available to replace the standard infrared
remote control.
11. Aquastat:
An aquastat shall be available for use with a
2-pipe heating/cooling changeover system.