Unit-Mounted Controller - Carrier Aquazone 50PEC09-18 Installation, Start-Up And Service Instructions Manual

UNIT-MOUNTED CONTROLLER

Designed to enhance the unit operation with more flexibility, ac-
curate control and operating modes the unit-mounted controller
provides an increased level of comfort in the conditioned space to-
gether with solid-state reliability and ease of operation. See Fig. 9.
The same functions of the proven Complete C package module
are incorporated into the unit-mounted controller for unit protec-
tion. unit-mounted controllers are standard on all console units ex-
cept for remote options.
• Tactile touch pad for temperature, fan and mode adjust-
ment.
• Digital display of temperature in either degrees Fahrenheit
or Celsius.
• LED display provides indication for unit operating mode
as well as fan speed and fault indication for high or low
pressure lockout.
• Adjustable Temperature Set point from 60°F through
80°F (15.5°C through 26.7°C).
• Adjustable Temperature Differential between 1°F and 6°F
(0.6°C and 3.3°C).
Fig. 8 — WSHP Open Control Package
•
•
NOTE: The 40°F clamp-on water coil freeze sensor is located on
the water out piping. If the loop temperature is expected to go be-
low water freezing temperature (see Fig. 10), this sensor should be
removed from the safety circuit. The appropriate amount of anti-
freeze for the specific application must be used to protect the heat
pump from freezing.
Refer to the Unit Wiring Diagram located on the unit.
21
Selectable options:
- Manual/Automatic changeover
- Fan speed – High or Low
- Fan operation constant fan or cycling with compressor
Additional features:
- 5-minute anti short cycling delay
- Random start
- 90-second low pressure bypass timer prevents nuisance
lockouts during cold winter start up.
- Intelligent reset allows the unit to automatically restart
after 5 minutes if a fault is no longer active.