Carrier 50HJQ004 Installation, Start-Up And Service Instructions Manual page 24

APPLICATION
Dry Bulb
Temperature with
PremierLink*
(PremierLink
requires 4-20 mA
Actuator)
Differential Dry Bulb
Temperature with
PremierLink*
(PremierLink
requires 4-20 mA
Actuator)
Single Enthalpy with
PremierLink*
(PremierLink
requires 4-20 mA
Actuator)
Differential Enthalpy
with PremierLink*
(PremierLink
requires 4-20 mA
Actuator)
*PremierLink control requires Supply Air Temperature sensor 33ZCSENSAT and Outdoor Air Temperature sensor HH79NZ017
— Included with factory-installed PremierLink control; field-supplied and field-installed with field-installed PremierLink control.
NOTES:
1. CO Sensors (Optional):
2
33ZCSENCO2 — Room sensor (adjustable). Aspirator box is required for duct mounting of the sensor.
33ZCASPCO2 — Aspirator box used for duct-mounted CO
33ZCT55CO2 — Space temperature and CO
33ZCT56CO2 — Space temperature and CO
2. All units include the following Standard Sensors:
Outdoor-Air Sensor — 50HJ540569 — Opens at 67_F, closes at 52_F, not adjustable.
Mixed-Air Sensor — HH97AZ001 — (PremierLink control requires Supply Air Temperature sensor 33ZCSENSAT
and Outdoor Air Temperature Sensor HH79NZ017)
Compressor Lockout Sensor — 50HJ540570 — Opens at 35_F, closes at 50_F.
The SAT probe is wire-tied to the supply-air opening (on the
horizontal opening end) in its shipping position. Remove the
sensor for installation. Re-position the sensor in the flange of the
supply-air opening or in the supply air duct (as required by local
codes). Drill or punch a 1/2-in. hole in the flange or duct. Use
two field-supplied, self-drilling screws to secure the sensor probe
in a horizontal orientation.
NOTE: The sensor must be mounted in the discharge airstream
downstream of the cooling coil and any heating devices. Be sure
the probe tip does not come in contact with any of the unit or heat
surfaces.
Outdoor Air Temperature Sensor (OAT)
When the unit is supplied with a factory-mounted PremierLink
control, the outdoor-air
factory-supplied and wired.
Install the Indoor Air Quality (CO
Mount the optional indoor air quality (CO
manufacturer specifications.
A separate field-supplied transformer must be used to power the
CO sensor.
2
Wire the CO sensor to the COM and IAQI terminals of J5 on the
2
PremierLink controller. Refer to the PremierLink Installation,
Table 6 — PremierLink™ Sensor Usage
OUTDOOR AIR
TEMPERATURE SENSOR
Included ---
HH79NZ017
Included ---
HH79NZ017
Included ---
Not Used
Included ---
Not Used
room sensor.
2
room sensor with override.
2
room sensor with override and set point.
2
temperature sensor (OAT)
) Sensor
2
) sensor according to
2
RETURN AIR
TEMPERATURE SENSOR
—
Required ---
33ZCT55SPT
or Equivalent
—
—
Start-up, and Configuration Instructions for detailed wiring and
configuration information.
Enthalpy Sensors and Control
The enthalpy control (HH57AC077) is supplied as a
field-installed accessory to be used with the economizer damper
control option. The outdoor air enthalpy sensor is part of the
enthalpy control. The separate field-installed accessory return air
enthalpy sensor (HH57AC078) is required for differential
enthalpy control.
NOTE: The enthalpy control must be set to the "D" setting for
differential enthalpy control to work properly.
The enthalpy
enthalpy from the outdoor and return air enthalpy sensors and
is
provides a dry contact switch input to the PremierLink controller.
Locate the controller in place of an existing economizer controller
or near the actuator. The mounting plate may not be needed if
existing bracket is used.
A closed contact indicates that outside air is preferred to the
return air. An open contact indicates that the economizer should
remain at minimum position.
24
OUTDOOR AIR RETURN AIR
ENTHALPY SENSOR ENTHALPY SENSOR
—
—
Required ---
HH57AC077
Required ---
HH57AC077
control receives the indoor
—
—
—
Required ---
HH57AC078
and return