Carrier Air Conditioner Product Data and Specifications for 48TJD and 48TJE Models

CONDENSER INTAKE

COILLOUVERS

TOP COVER

CORNER POST

FLUE HOOD END PANEL

Fig. 7 — Flue Hood Details

LEGEND

NFGC — National Fuel Gas Code *Field supplied.

NOTE: Follow all local codes.

SPACING OF SUPPORTS

STEEL PIPE	X
NOMINAL
	DIMENSIONS
DIAMETER
(in.)	(feet)
1/2	6
3/4 or 1	8
11/4 or larger	10

Fig. 8 — Gas Piping Guide (With Accessory

Thru-the-Curb Service Connections)

Voltage to compressor terminals during operation must be within voltage range indicated on unit nameplate (see Table 2). On 3-phase units, voltages between phases must be balanced within 2% and the current within 10%. Use the formula shown in the legend for Table 2, Note 2 to determine the percent of voltage imbalance. Operation on improper line voltage or ex- cessive phase imbalance constitutes abuse and may cause dam- age to electrical components. Such operation would invalidate any applicable Carrier warranty.

FIELD CONTROL WIRING — Install a Carrier-approved accessory thermostat assembly according to installation in- structions included with the accessory. Locate thermostat assembly on a solid wall in the conditioned space to sense aver- age temperature in accordance with thermostat installation instructions. Connect thermostat wires to terminal board.

Route thermostat cable or equivalent single leads of colored wire from subbase terminals through connector on unit to low- voltage connections (shown in Fig. 12).

Fig. 9 — Conduit Installation

LEGEND

IGC — Integrated Gas Unit Controller

LED — Light-Emitting Diode

Fig. 10 — Component Location

NOTE: For wire runs up to 50 ft, use no. 18 AWG (American Wire Gage) insulated wire (35 C minimum). For 50 to 75 ft, use no. 16 AWG insulated wire (35 C minimum). For over 75 ft, use no. 14 AWG insulated wire (35 C minimum). All wire larger than no. 18 AWG cannot be directly connected to the thermostat and will require a junction box and splice at the thermostat.

Feed control wires through the raceway located between the condenser coil top cover and burner side panel. See Fig. 10. Connect control wires to corresponding screw terminals, the low-voltage connections located inside low-voltage access panel. See Fig. 12 for connections. The low-voltage connec- tions provide the UL required clearance between high- and low-voltage wiring.

HEAT ANTICIPATOR SETTINGS — Set heat anticipator settings at .14 amp for the first stage and .14 amp for second- stage heating, when available.

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