Outdoor Air Temperature (Oat) Sensor; Economi$Er2; Field Connections; Space Sensors - Carrier 50HCQ12 Installation Instructions Manual

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 sensor
2
Outdoor air CO sensor
2
Refer to Table 2 for accessory part numbers.

Field Connections

Field connections for accessory sensor and input devices
are made at the 16- - pole terminal block (TB3) located
beneath the PremierLink control (See Fig. 35). 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).
Route wires to control box as indicated in Fig. 28.
Table 3 provides a summary of field connections for units
equipped with Space Sensor. Table 4 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.
1 2 3 4 5 6
WHT(GND)
SEN
SW1
BRN (GND)
BLU (SPT)
Fig. 36 - - T- - 55 Space Temperature Sensor Wiring
RED(+)
CCN COM
BLK(-)
SENSOR WIRING
C08201
Connect T- - 55: See Fig. 36 for typical T- - 55 internal
connections. Connect the T- - 55 SEN terminals to TB3
terminals 1 and 3 (see Fig. 37).
SEN
SEN
Fig. 37 - - PremierLink T- - 55 Sensor
Connect T- - 56: See Fig. 38 for T- - 56 internal connections.
Install a jumper between SEN and SET terminals as
illustrated. Connect T- - 56 terminals to TB3 terminals 1, 3
and 5 (see Fig. 39).
1 2 4 5
3
SEN SET
SW1
Cool Warm
Fig. 38 - - T- - 56 Internal Connections
SEN
SEN
Jumper
SET
SET
Fig. 39 - - PremierLink T- - 56 Sensor
Connect Thermostat —
A 7- - wire thermostat connection requires a 24- - v power
source and a common connection. Use the R and C
terminals on the CTB's THERMOSTAT connection strip
for these. Connect the thermostat's Y1, Y2, W1, W2 and
G terminals to PremierLink TB3 as shown in Fig. 40.
If the 50HCQ unit is equipped with factory- - installed
smoke detector(s), disconnect the factory BLU lead at
TB1- - 6 (Y2) before connecting the thermostat. Identify the
BLU lead originating at CTB- - DDC- - 1; disconnect at
TB1- - 6 and tape off. Confirm that the second BLU lead at
TB1- - 6 remains connected to PremierLink J4- - 8.
21
TB3 PL
1
J6-7
J6-6
3
C10023
6
RED(+)
WHT(GND)
CCN COM
BLK(-)
BLK
(T56)
BRN (GND)
SENSOR WIRING
BLU (SPT)
JUMPER
TERMINALS
AS SHOWN
C08202
TB3 PL
1 J6-7
PL
TB3
J6-6
3
J6-5
5
C10022