Carrier 48TJD Specifications download pdf (Page 24)

L1 _4

L1 -S

- (NOT BSEDI

L1-9

PLI _8

TO MAIN PLI _5

CONTROL /_ I

BOX PL1-6

PLI-II

PLI*I

PLI _R

PL1-10

(NOT USED)

LEGEND

DCV -- Demand Controlled Ventilation

IAQ --Indoor Air Quality

LALS I Low Temperature Compressor

Lookout Switch

OAT IOutdoor_Air Temperature

POT -- Potentiometer

-- ORN

(FIE£B

ACCESSORY}

REMOTE MIN

POSITION POT

_E_T[ POT (ISS_hmT "

DISCHARGE AIR

SENSOR (Bk Ohm)

BLK_I_EO -

1 fIELD INSTALLED _IA_

F IAO SENSORI .....

I I OAT TEWPI L

I 1 ENTHALPY SENSOR

I I _Lu-

I I .T--

RETURN AIR TEHP!

1 ENTRALPY SEICSOR

IT _---

I I

1 l BLU

I l PNK--_

I I RED LALS

I I FIELD SPLICE

,_I aR.

FIELD SPLICE

ECONOMIZER MOTOR

Potentiometer Default Settings: NOTES:

Power Exhaust Middle

Minimum Pos. Fully Closed

DCV Max, Middle

DCV Set Middle

Enthalpy C Setting

YEL

PNK

-8LU

RED

EXH

I_ 1 [_ SET

BLK BV IOV

POS

OPEN

2v IBv

_so. N _ SET

_v lov

/ B C

[COBOMISER il

BOARD

1, 620 ohm, 1 watt 5% resistor should be removed only when using differential

enthalpy or dry bulb.

2, If a separate field-supplied 24 v transformer is used for the IAQ sensor power

supply, it cannot have the secondary of the transformer grounded.

3, For field-installed remote minimum position POT, remove black wire jumper

between P and P1 and set control minimum position POT to the minimum

position,

Fig. 35 -- EconoMi$erlV Wiring

NOTE 1

NOTE 2

50HJ540573

ACTUATOR

ASSEMBLY

RUN

DIRECT DRIVE

ACTUATOR

500 OHM

RESISTOR- "L_

OAT

RED

PINK

BLUE

BLACK

WHITE

ECONOMI$ER2 PLUG

LEGEND

OAT -- Outdoor Air Temperature Sensor

NOTES:

1. Switch on actuator must be in run position for economizer to operate.

2. 50HJ540573 actuator consists of the 50HJ540567 actuator and a harness with 500-ohm resistor.

Fig. 36 -- EconoMi$er2 Wiring

1 2 ... 19 20 21 22 23 24 25 26 27 28 29 ... 55 56

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Carrier 48TJD Specifications Page 24

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