Carrier 50LJQ008, 012 Ð Conduit Installation, Ð Component Location, Ð Unit Voltage

Fig. 14 Ð Conduit Installation

DISCONNECT	EMT OR RIGID		BRACKET AND	MANUAL RESET
MOUNTING	CONDUIT		CONDUIT DRIP	LIMIT SWITCH
LOCATION	(FIELD-	MAIN	BOOT	LOCATION
	SUPPLIED)			(HIDDEN)
		CONTROL
		BOX	CENTER POST

HEATER

COVERS

HEATER

WIRING

LABEL

HEATER

MOUNTING

BRACKET

SINGLE	SINGLE POINT	CONTROL WIRE	HEATER	HEATER
POINT	BOX MOUNTING	TERMINAL	MODULE	MODULE
BOX	SCREWS	BLOCK	(LOCATION 1)	(LOCATION 2)

Fig. 15 Ð Component Location

FIELD CONTROL WIRING Ð Install a Carrier-approved accessory thermostat assembly according to installation in- structions included with the accessory. Locate thermostat as- sembly on a solid wall in the conditioned space to sense av- erage temperature in accordance with thermostat installation instructions.

Route thermostat cable or equivalent single leads of col- ored wire from subbase terminals to low-voltage connec- tions on unit (shown in Fig. 16) as described in Steps 1-4 below.

NOTE: For wire runs up to 15 m (50 ft), use no. 18 AWG (American Wire Gage) insulated wire (35 C minimum). For

15 to 23 m (51 to 75 ft), use no. 16 AWG insulated wire (35 C minimum). For over 23 m (75 ft), use no. 14 AWG insulated wire (35 C minimum). See Table 3 for wire conversions.

1.If unit is mounted on roof curb and accessory thru-the- curb service plate connection is used, route wire through connection plate.

2.Pass control wires through the hole provided on unit (see connection D, Connection Sizes table, Fig. 5).

3.Feed wire through the raceway built into the corner post to the 24-v barrier located on the left side of the control box. See Fig. 17. The raceway provides the UL (U.S.A. Standard) required clearance between high- and low- voltage wiring.

4.Connect thermostat wires to screw terminals of low- voltage connector. The connector plugs into the control board and may be removed to make connection. Plug con- nector back into the control board after making connec- tion or unit will not operate.

HEAT ANTICIPATOR SETTINGS Ð Set ®rst-stage heat an- ticipator settings at 1.0. Set second-stage heat anti- cipator settings at 0.6. For units with optional electric heat, set anticipator for second stage as shown in Table 4.

Table 3 Ð American/European Wire Conversions

AMERICAN		EUROPEAN
Industry	American	Industry
	Conversion	Standard
Standard Size
	(mm2)	Size (mm2)
18 AWG	0.82	1.0
16 AWG	1.30	1.5
14 AWG	2.08	2.5
12 AWG	3.30	4.0
10 AWG	5.25	6.0
8 AWG	6.36	10.0
6 AWG	13.29	16.0
4 AWG	21.14	25.0
3 AWG	26.65	Ð
2 AWG	33.61	35.0
1 AWG	42.39	50.0
1/0 AWG	53.49	Ð
2/0 AWG	67.42	70.0
3/0 AWG	85.00	95.0
4/0 AWG	107.19	120.0
250 kcmil	126.64	150.0
300 kcmil	151.97	Ð
350 kcmil	177.90	185.0
400 kcmil	202.63	240.0
500 kcmil	253.29	300.0
600 kcmil	303.95	Ð

LEGEND

AWG Ð American Wire Gage kcmil Ð Thousand Circular Mils

Table 4 Ð Unit Voltage

	220			400
Heater kW	Anticipator Setting	Part No. 50DJ901Ð	Heater kW	Anticipator Setting	Part No. 50DJ901Ð
9.5	0.3	711	10.5	0.3	681
14.6	0.3	601	12.5	0.3	631
22.7	0.6	611	21.0	0.3	641
29.3	0.6	621	25.0	0.3	651
38.8	0.9	711, 621*	31.5	0.6	681, 641*
43.9	0.9	711, 621*	37.5	0.6	631, 651*

*Requires 2 heater packages.

12