Carrier 50TCQD - Page 21

50TCQD
21
Outdoor Air Temperature (OAT) Sensor — The OAT is
factory--mounted in the EconoMi$er2 (FIOP or
accessory). It is a nominal 10k ohm thermistor attached to
an eyelet mounting ring.
EconoMi$er2 — The PremierLink control is used with
EconoMi$er2 (option or accessory) for outdoor air
management. The damper position is controlled directly
by the PremierLink control; EconoMi$er2 has no internal
logic device.
Outdoor air management functions can be enhanced with
field--installation of these accessory control devices:
Enthalpy control (outdoor air or differential sensors)
Space CO
2
sensor
Outdoor air CO
2
sensor
Refer to Table 3 for accessory part numbers.
Field connections — Field connections for accessory
sensor and input devices are made at the 16--pole terminal
block (TB1) located on the control box top in front of the
PremierLink control (See Fig. 29). Some input devices
also require a 24--vac signal source; connect at CTB
terminal R at “THERMOSTAT” connection strip for this
signal source. See connections figures on following pages
for field connection locations (and for continued
connections at the PremierLink board inputs).
Table 4 provides a summary of field connections for units
equipped with Space Sensor. Table 5 provides a summary
of field connections for units equipped with Space
Thermostat.
Space Sensors -- The PremierLink controller is
factory--shipped configured for Space Sensor Mode. A
Carrier T--55 or T--56 space sensor must be used. T--55
space temperature sensor provides a signal of space
temperature to the PremierLink control. T--56 provides
same space temperature signal plus it allows for
adjustment of space temperature setpoints from the face of
the sensor by the occupants.
2
3
45
61
SW1
SEN
BRN (GND)
BLU (SPT)
RED(+)
WHT(GND)
BLK(-)
CCN COM
SENSOR WIRING
C08201
Fig. 30 -- T--55 Space Temperature Sensor Wiring
Connect T--55 -- See Fig. 30 for typical T--55 internal
connections. Connect the T--55 SEN terminals to TB1
terminals 1 and 3 (see Fig. 31).
SEN J6-7
J6-6
1
3
TB1 PL
SEN
C08212
Fig. 31 -- PremierLink T--55 Sensor
Table 3 – PremierLink Sensor Usage
APPLICATION
OUTDOOR AIR
TEMPERATURE
SENSOR
RETURN AIR
TEMPERATURE
SENSOR
OUTDOOR AIR
ENTHALPY SENSOR
RETURN AIR
ENTHALPY SENSOR
Differential Dry Bulb
Tempera t u re with
PremierLink
(PremierLink requires
4 --- 2 0 m A A c t u a t o r )
I n c l u d e d ---
CRTEMPSN001A00
R e q u i r e d ---
33ZCT55SPT
or equivalent
--- ---
Single Enthalpy with
PremierLink
(PremierLink requires
4 --- 2 0 m A A c t u a t o r )
I n c l u d e d ---
Not Used
---
R e q u i r e s ---
33CSENTHSW
---
Differential Enthalpy
with PremierLink
(PremierLink requires
4 --- 2 0 m A A c t u a t o r )
I n c l u d e d ---
Not Used
---
R e q u i r e s ---
33CSENTHSW
or equivalent
R e q u i r e s ---
33CSENTSEN
or equivalent
NOTES:
CO
2
Sensors (Optional):
33ZCSENCO2 --- Room sensor (adjustable). Aspirator box is required for duct mounting of the sensor.
33ZCASPCO2 --- Aspirator box used for duct---mounted CO
2
room sensor.
33ZCT55CO2 --- Space temperature and CO
2
room sensor with override.
33ZCT56CO2 --- Space temperature and CO
2
room sensor with override and setpoint.