Carrier 48TJD008-014, 48TJE008-014, 48TJF008-012 User Manual

48TJD008-014 48TJE008-014 48TJF008-012

Single-Package Rooftop Heating/Cooling Units

Installation, Start-Up and

Service Instructions

CONTENTS

Page

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 1

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22

Step 1 Ð Provide Unit Support . . . . . . . . . . . . . . . 1

·ROOF CURB

·SLAB MOUNT

Step 2 Ð Field Fabricate Ductwork . . . . . . . . . . . . 2

Step 3 Ð Install External Trap for

Condensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Step 4 Ð Rig and Place Unit . . . . . . . . . . . . . . . . . . 2 · POSITIONING

Step 5 Ð Install Flue Hood . . . . . . . . . . . . . . . . . . . 8 Step 6 Ð Install Gas Piping . . . . . . . . . . . . . . . . . . . 8 Step 7 Ð Make Electrical Connections . . . . . . . . 8

·FIELD POWER SUPPLY

·FIELD CONTROL WIRING

·HEAT ANTICIPATOR SETTINGS

Step 8 Ð Adjust Factory-Installed Options . . . 11

·APOLLO CONTROL

·MANUAL OUTDOOR-AIR DAMPER

·OPTIONAL DURABLADE ECONOMIZER

·OPTIONAL PARABLADE ECONOMIZER

Step 9 Ð Adjust Evaporator-Fan Speed . . . . . . 16

START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23,24 SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25-30 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . 31-36 START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . CL-1

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can be hazardous due to system pressure and electrical components. Only trained and quali®ed service personnel should install, repair, or service air-conditioning equipment.

Untrained personnel can perform basic maintenance functions of cleaning coils and ®lters and replacing ®lters. All other operations should be performed by trained service personnel. When working on air-conditioning equipment, observe precautions in the literature, tags and labels attached to the unit, and other safety precautions that may apply.

Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloth for unbrazing operations. Have ®re extinguishers available for all brazing operations.

Disconnect gas piping from unit when leak testing at pressure greater than 1¤2 psig. Pressures greater than 1¤2 psig will cause gas valve damage resulting in hazardous condition. If gas valve is subjected to pressure greater than 1¤2 psig, it must be replaced before use. When pressure testing ®eldsupplied gas piping at pressures of 1¤2 psig or less, a unit connected to such piping must be isolated by manually closing the gas valve(s).

Before performing service or maintenance operations on unit, turn off main power switch to unit. Electrical shock could cause personal injury.

INSTALLATION

Unit is shipped in the vertical discharge con®guration. To convert to horizontal con®guration, remove screws from side duct opening covers and remove covers. Using the same screws, install covers on vertical duct openings with the insulationside down. Seals around duct openings must be tight. See Fig. 1.

Step 1 Ð Provide Unit Support

ROOF CURB Ð Assemble and install accessory roof curb in accordance with instructions shipped with curb. See Fig. 2. Install insulation, cant strips, roo®ng felt, and counter ¯ashing as shown. Ductwork must be attached to curb. If gas is to be routed through the curb, attach the accessory thru-the-curb service connection plate to the roof curb in accordance with the accessory installation instructions. Connection plate must be installed before unit is set in roof curb.

IMPORTANT: The gasketing of the unit to the roof curb is critical for a watertight seal. Install gasket supplied with the roof curb as shown in Fig. 2. Improperly applied gasket can also result in air leaks and poor unit performance.

Curb should be level. Unit leveling tolerances are shown in Fig. 3. This is necessary for unit drain to function properly. Refer to Accessory Roof Curb Installation Instructions for additional information as required.

Manufacturer reserves the right to discontinue, or change at any time, speci®cations or designs without notice and without incurring obligations.

Book	1	4		PC 111	Catalog No. 564-934	Printed in U.S.A.	Form 48TJ-13SI	Pg 1	9-96	Replaces: 48TJ-10SI
Tab	1a	6a

SLAB MOUNT (Horizontal Units Only) Ð Provide a level concrete slab that extends a minimum of 6 in. beyond unit cabinet. Install a gravel apron in front of condenser coil air inlet to prevent grass and foliage from obstructing air¯ow.

NOTE: Horizontal units may be installed on a roof curb if required.

Step 2 Ð Field Fabricate Ductwork Ð Secure all ducts to roof curb and building structure on vertical units.

Do not connect ductwork to unit. For horizontal applications, ®eld-supplied ¯anges should be attached to horizontal discharge openings and all ductwork secured to the ¯anges. Insulate and weatherproof all external ductwork, joints, and roof openings with counter ¯ashing and mastic in accordance with applicable codes.

Ducts passing through an unconditioned space must be insulated and covered with a vapor barrier.

If a plenum return is used on a vertical unit, the return should be ducted through the roof deck to comply with applicable ®re codes.

A minimum clearance is not required around ductwork. Cabinet return-air static shall not exceed −.35 in. wg with Durablade or PARABLADE economizer or .45 in. wg without economizer.

These units are designed for a minimum continuous returnair temperature of 50 F (dry bulb), or an intermittent operation down to 45 F (dry bulb), such as when used with a night set-back thermostat.

Step 3 Ð Install External Trap for Condensate

Drain Ð The unit's 3¤4-in. condensate drain connections are located at the bottom and side of the unit. Unit discharge connections do not determine the use of drain connections; either drain connection can be used with vertical or horizontal applications.

When using the standard side drain connection, make sure the plug in the alternate bottom connection is tight before installing the unit.

To use the bottom drain connection for a roof curb installation, relocate the factory-installed plug from the

bottom connection to the side connection. See Fig. 4. The piping for the condensate drain and external trap can be completed after the unit is in place.

All units must have an external trap for condensate drainage. Install a trap at least 4-in. deep and protect against freezeup. See Fig. 5. If drain line is installed downstream from the external trap, pitch the line away from the unit at 1 in. per 10 ft of run. Do not use a pipe size smaller than the unit connection.

Step 4 Ð Rig and Place Unit Ð Inspect unit for transportation damage. File any claim with transportation agency. Keep unit upright and do not drop. Spreader bars are not required if top crating is left on unit. Rollers may be used to move unit across a roof. Level by using unit frame as a reference. See Table 1 and Fig. 6 for additional information. Operating weight is shown in Table 1 and Fig. 6.

Lifting holes are provided in base rails as shown in Fig. 6 and 7. Refer to rigging instructions on unit.

All panels must be in place when rigging.

POSITIONING Ð Maintain clearance around and above unit to provide minimum distance from combustible materials, proper air¯ow, and service access. See Fig. 7.

Do not install unit in an indoor location. Do not locate unit air inlets near exhaust vents or other sources of contaminated air.

Be sure that unit is installed so that snow will not block the combustion intake or ¯ue outlet.

Unit may be installed directly on wood ¯ooring or on Class A, B, or C roof-covering material when roof curb is used.

Although unit is weatherproof, guard against water from higher level runoff and overhangs.

Position unit on roof curb so that the following clearances are maintained: 1¤4-in. clearance between roof curb and base rails on each side and front of unit; 15¤32-in. clearance between roof curb and rear of unit. (See Fig. 2, section C-C.)

Fig. 1 Ð Horizontal Conversion Panels

2

UNIT SIZE

``E''

POWER

CONTROL

CONNECTOR

``B''

``C''

``D'' ALT DRAIN HOLE

ACCESSORY

48TJ

GAS

CONNECTION

CONNECTION

PACKAGE

3¤49 NPT

3¤49 NPT

1¤2 9

NPT

CRBTMPWR00A100

(THRU-THE-BOTTOM)

008-014

28-87¤169 [827]

18-1015¤169 [583]

13¤49 [45]

3¤49 NPT

11¤49 NPT

1¤29

NPT

CRBTMPWR00A200

(THRU-THE-BOTTOM)

UNIT SIZE

``A''

ROOF CURB

48TJ

ACCESSORY

18-29 [356]

CRRFCURB003A00

Fig. 2 Ð Roof Curb Details

3

MAXIMUM ALLOWABLE

DIFFERENCE (in.)

A-B	B-C	A-C
0.5	1.0	1.0

Fig. 3 Ð Unit Leveling Tolerances

NOTE: Drain plug is shown in factory-installed position.

Fig. 4 Ð Condensate Drain Pan

NOTE: Trap should be deep enough to offset maximum unit static difference. A 4-in. trap is recommended.

Fig. 5 Ð External Trap Condensate Drain

Locate mechanical draft system ¯ue assembly at least 48 in. from any opening through which combustion products could enter the building, and at least 48 in. from an adjacent building or combustible material. When unit is located adjacent to public walkways, ¯ue assembly must be at least 7 ft above grade.

Flue vent discharge must have a minimum horizontal clearance of 48 in. from electric and gas meters, gas regulators, and gas relief equipment.

Flue gas can deteriorate building materials. Orient unit so that ¯ue gas will not affect building materials.

Adequate combustion-air space must be provided for proper operation of this equipment. Be sure that installation complies with all local codes and Section 5.3, Air for Combustion and Ventilation, NFGC (National Fuel Gas Code), ANSI (American National Standards Institute) Z223.1-latest year and addendum Z223.1A-latest year. In Canada, installation must be in accordance with the CAN1. B149.1 and CAN1.B149.2 installation codes for gas burning appliances.

NOTES:

1. Dimension in ( ) is in millimeters.

2.Hook rigging shackles through holes in base rail as shown in detail ``A.'' Holes in base rails are centered around the unit center of gravity. Use wooden top skid when rigging to prevent rigging straps from damaging unit.

3.Weights include base unit without economizer. See Table 1 for economizer weights.

All panels must be in place when rigging.

	MAX				DIMENSIONS
UNIT	WEIGHT		``A''		``B''		``C''
	lb	kg	in.	mm	in.	mm	in.	mm
48TJD/TJE/TJF008	870	395	87.38	2219	40.25	1022	41.31	1050
48TJD/TJE/TJF009	880	399	87.38	2219	40.25	1022	41.31	1050
48TJD/TJE/TJF012	1035	469	87.38	2219	40.25	1022	49.31	1253
48TJD/TJE014	1050	476	87.38	2219	40.25	1022	49.31	1253

Fig. 6 Ð Rigging Details

4

Table 1 Ð Physical Data

UNIT SIZE 48TJ		008D/E/F		009D/E/F		012D/E/F		014D/E
NOMINAL CAPACITY (tons)		71¤2		81¤2		10		121¤2
OPERATING WEIGHT (lb)
Unit
Al/Al*		870		880		1035		1050
Al/Cu*		881		896		1057		1077
Cu/Cu*		893		907		1080		1100
Durablade Economizer		44		44		44		44
PARBLADE Economizer		62		62		62		62
Roof Curb		143		143		143		143
COMPRESSOR				Reciprocating				Scroll
Quantity		2		2		2		2
Oil (oz)		50 ea		50 ea		50 ea		54 ea
REFRIGERANT TYPE					R-22
Operating Charge (lb-oz)
Circuit 1		4-13		6-14		5-13		8-10
Circuit 2		4-14		6-3		5-14		8- 6
CONDENSER COIL			Enhanced Copper Tubes, Aluminum Lanced Fins
Rows...Fins/in.		1...17		2...17		2...17		2...17
Total Face Area (sq ft)		20.50		18.00		17.42		25.00
CONDENSER FAN				Propeller Type
Nominal Cfm		6500		6500		7000		7000
Quantity...Diameter (in.)		2...22		2...22		2...22		2...22
Motor Hp...Rpm		1¤4...1100		1¤4...1100		1¤4...1100		1¤4...1100
Watts Input (Total)		600		600		600		600
EVAPORATOR COIL		Enhanced Copper Tubes, Aluminum Double-Wavy Fins, Acutrol™ Feed Device
Rows...Fins/in.		3...15		3...15		3...15		4...15
Total Face Area (sq ft)		8.0		8.0		10.0		11.1
EVAPORATOR FAN				Centrifugal Type
Quantity...Size (in.)	Std	1...15 x 15		1...15 x 15		1...15 x 15		1...15 x 15
	Alt	1...15 x 15		Ð		1...15 x 15		1...15 x 15
Type Drive	Std	Belt		Belt		Belt		Belt
Nominal Cfm	Alt	Belt		Ð		Belt		Belt
		3000		3400		4000		5000
Motor Hp	Std	Ð		Ð		Ð		Ð
	Alt	Ð		Ð		Ð		Ð
Maximum Continuous Bhp	Std	2.40		2.40		2.40		4.20
	Alt	Ð		Ð		2.90		5.25
Motor Frame Size	Std	56		56		56		56
Nominal Rpm High/Low	Alt	Ð		Ð		56		56
		Ð		Ð		Ð		Ð
Fan Rpm Range	Std	590-840		685-935		685-935		860-1080
Motor Bearing Type	Alt	685-935		Ð		835-1085		900-1260
		Ball		Ball		Ball		Ball
Maximum Allowable Rpm		2100		2100		2100		2100
Motor Pulley Pitch Diameter Min/Max (in.)	Std	2.4/3.4		2.8/3.8		2.8/3.8		4.0/5.0
	Alt	2.8/3.8		Ð		3.4/4.4		3.1/4.1
Nominal Motor Shaft Diameter (in.)	Std	5¤8		5¤8		5¤8		7¤8
	Alt	Ð		Ð		7¤8		7¤8
Fan Pulley Pitch Diameter (in.)	Std	7.0		7.0		7.0		8.0
Nominal Fan Shaft Diameter (in.)	Alt	7.0		Ð		7.0		5.9
		Ð		Ð		Ð		Ð
Belt, Quantity...Type...Length (in.)	Std	1...A...48		1...A...48		1...A...51		1...A...51
	Alt	1...A...51		Ð		1...A...57		1...BX...46
Pulley Center Line Distance (in.)	Std	16.75-19.25		16.75-19.25		15.85-17.50		15.85-17.50
	Alt	16.75-19.25		Ð		15.85-17.50		15.85-17.50
Speed Change per Full Turn of	Std	50		50		50		44
Movable Pulley Flange (rpm)	Alt	50		Ð		50		50
Movable Pulley Maximum Full Turns	Std	5		5		5		5
From Closed Position	Alt	5		Ð		5		6
Factory Setting	Std	5		5		5		5
	Alt	5		Ð		5		6
Factory Speed Setting (rpm)	Std	590		685		685		860
Fan Shaft Diameter at Pulley (in.)	Alt	685		Ð		835		960
		1		1		1		1

(See legend and notes on page 6.)

5

Table 1 Ð Physical Data (cont)

UNIT SIZE 48TJ		008D/E/F	009D/E/F	012D/E/F	014D/E
FURNACE SECTION
Rollout Switch Cutout
Temp (F)		195	195	195	195
Burner Ori®ce Diameter
(in. ...drill size)
Natural Gas	Std	.120...31	.120...31	.120...31/.120...31/.129...30	.120...31/.129...30
Liquid Propane	Alt	.096...41	.096...41	.096...41/.096...41/.102...38	.096...41/.102...38
Pilot Ori®ce Diameter
(Quantity) in. ...drill size
Natural Gas	Std	Ð	Ð	Ð	Ð
Liquid Propane	Alt	Ð	Ð	Ð	Ð
Thermostat Heat Anticipator
Setting (amps)
208/230 v Stage 1		.14	.14	.14	.14
Stage 2		.20	.20	.20	.20
460 v Stage 1		.14	.14	.14	.14
Stage 2		.20	.20	.20	.20
Gas Input (Btuh) Stage 1		125,000/120,000/180,000	125,000/120,000/180,000	120,000/180,000/200,000	180,000/200,000
Stage 2		Ð/180,000/224,000	Ð/180,000/224,000	180,000/224,000/250,000	224,000/250,000
Efficiency (Steady
State) (%)		80	80	80	80
Temperature Rise Range		20-50/35-65/45-75	20-50/35-65/45-75	35-65/35-65/40-70	35-65/40-70
Manifold Pressure (in. wg)
Natural Gas	Std	3.5	3.5	3.5	3.5
Liquid Propane	Alt	3.5	3.5	3.5	3.5
Gas Valve Quantity		1	1	1	1
Field Gas Connection
Size (in.)		1¤2/3¤4/3¤4	1¤2/3¤4/3¤4	3¤4/3¤4/3¤4	3¤4/3¤4
HIGH-PRESSURE SWITCH (psig)²
Standard Compressor			450 ± 50		500 ± 50
Internal Relief (Differential)
Cutout			428		428
Reset (Auto.)			320		320
LOW-PRESSURE SWITCH (psig)²
Cutout			7 ± 3
Reset (Auto.)			22 ± 7
FREEZE PROTECTION
THERMOSTAT (F)²
Opens			30 ± 5
Closes			45 ± 5
OUTDOOR-AIR INLET SCREENS			Cleanable
Quantity...Size (in.)			1...20 x 25 x 1
			1...16 x 25 x 1
RETURN-AIR FILTERS			Throwaway
Quantity...Size (in.)		4...16 x 20 x 2	4...16 x 20 x 2	4...20 x 20 x 2	4...20 x 20 x 2

	LEGEND
Al	Ð Aluminum
Bhp	Ð Brake Horsepower
Cu	Ð Copper

*Evaporator coil ®n material/condenser coil ®n material. ²Requires an optional or accessory controls kit.

NOTE: The 48TJ008-014 units have a loss-of-charge/low-pressure switch (accessory) located in the liquid line.

6

	STANDARD		CORNER		CORNER			CORNER		CORNER												CONNECTION SIZES
UNIT	UNIT		WEIGHT		WEIGHT			WEIGHT		WEIGHT		``H''		``J''		``K''		``L''
																					A	13¤89 Dia [35] Field Power Supply Hole
48TJ	WEIGHT		(A)		(B)			(C)		(D)
																					B	2-1¤29 Dia [64] Power Supply Knock-Out
	Lb	Kg	Lb	Kg	Lb		Kg	Lb	Kg	Lb	Kg	ft-in.	mm	ft-in.	mm	ft-in.	mm	ft-in.	mm
																					C	13¤49 Dia [44] Charging Port Hole
D/E/F008	870	395	189	86	161		73	239	109	280	127	1-27¤8	378	3-55¤16	1050	2-911¤16	856	2- 27¤16	672
																					D	7¤89 Dia [22] Field Control Wiring Hole
D/E/F009	880	399	191	87	163		74	242	110	284	129	3-37¤8	1013	3-55¤16	1050	2-911¤16	856	2- 27¤16	672
																					E	3¤49Ð14 NPT Condensate Drain
D/E/F012	1035	469	225	102	192		87	285	129	333	151	2-57¤8	759	4-15¤16	1253	3-03¤8	924	2-107¤16	875
																						1¤29Ð14 NPT Gas Connection 48TJD008 & 009
D/E014	1050	476	228	103	195		88	289	131	338	153	1-27¤8	378	4-15¤16	1253	3-03¤8	924	2-107¤16	875		F
																						3¤49Ð14 NPT Gas Connection 48TJE/F008 & 009;
																						48TJD/E012,014, 48TJF012
																					G	29 Dia [51] Power Supply Knock-Out
																NOTES:
																1.	Dimensions in [		] are in millimeters.

-

-

BOTTOM POWER CHART, THESE HOLES

REQUIRED FOR USE WITH ACCESSORY

PACKAGES Ð CRBTMPWR001A00,

OR CRBTMPWR002A00

	THREADED	WIRE SIZE	REQUIRED HOLE
	CONDUIT SIZE		SIZES (MAX)
	1¤2(	24 V	7¤89	[22.2]
	3¤4(	Power*	11¤89	[28.4]
	11¤4(	Power*	13¤49	[44.4]

*Select either 3¤49 or 11¤49 for power, depending on wire size.

Fig. 7 Ð Base Unit Dimensions

7

Step 5 Ð Install Flue Hood Ð Flue hood is shipped screwed to the burner compartment access panel. Remove from shipping location and, using screws provided, install ¯ue hood and screen in location shown in Fig. 8.

Step 6 Ð Install Gas Piping Ð Unit is equipped for use with type of gas shown on nameplate. Refer to local building codes, or in the absence of local codes, to ANSI Z223.1- latest year and addendum Z223.1A-latest year entitled National Fuel Gas Code. In Canada, installation must be in accordance with the CAN1.B149.1 and CAN1.B149.2 installation codes for gas burning appliances.

For natural gas applications, gas pressure at unit gas connection must not be less than 4.0 in. wg (5.0 in. wg in high heat units) or greater than 13.0 in. wg while unit is operating. For liquid propane applications, the gas pressure must not be less than 5.0 in. wg or greater than 13.0 in. wg at the unit connection.

Size gas supply piping for 0.5 in. wg maximum pressure drop. Do not use supply pipe smaller than unit gas connection.

Support gas piping as shown in the table in Fig. 9. For example, a 3¤4-in. gas pipe must have one ®eld-fabricated support beam every 8 ft. Therefore, an 18-ft long gas pipe would have a minimum of 2 support beams, and a 48-ft long pipe would have a minimum of 6 support beams.

See Fig. 9 for typical pipe guide and locations of external manual gas shutoff valve.

Step 7 Ð Make Electrical Connections

Unit cabinet must have an uninterrupted, unbroken electrical ground to minimize the possibility of personal injury if an electrical fault should occur. This ground may consist of electrical wire connected to unit ground lug in control compartment, or conduit approved for electrical ground when installed in accordance with NEC (National Electrical Code), ANSI/NFPA (National Fire Protection Association), latest edition, and local electrical codes. Do not use gas piping as an electrical ground.

Failure to follow this warning could result in the installer being liable for personal injury of others.

Fig. 8 Ð Flue Hood Details

LEGEND

NFGC Ð National Fuel Gas Code *Field supplied.

NOTE: Follow all local codes.

SPACING OF SUPPORTS

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

Fig. 9 Ð Gas Piping Guide (With Accessory Thru-the-Curb Service Connections)

FIELD POWER SUPPLY Ð All units except 208/230-v units are factory wired for the voltage shown on the nameplate. If the 208/230-v unit is to be connected to a 208-v power supply, the transformer must be rewired by moving the black wire from the 230-v red wire on the transformer and connecting it to the 200-v blue wire from the transformer. The red wire then must be insulated.

Refer to unit label diagram for additional information. Pigtails are provided for ®eld service.

When installing units, provide a disconnect per NEC. Use copper conductors only when splice connectors are used.

All ®eld wiring must comply with NEC and local requirements. In Canada, electrical connections must be in accordance with CSA (Canadian Standards Association) C22.1 Canadian Electrical Code Part One.

Install conduit through side panel openings indicated in Fig. 7. Route power lines through connector to terminal connections as shown in Fig. 10.

On 3-phase units, voltages between phases must be balanced within 2% and the current within 10%. Use the formula shown in Table 2, Note 2 to determine the percentage of voltage imbalance. Operation on improper line voltage or excessive phase imbalance constitutes abuse and may cause damage to electrical components. Such operation would invalidate any applicable Carrier warranty.

NOTE: If ®eld-installed thru-the-bottom connections are used, refer to the accessory installation instructions for power wiring. Refer to Fig. 7 for drilling holes in basepan.

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

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.

8

Route thermostat cable or equivalent single leads of colored wire from subbase terminals to low-voltage connections on unit (shown in Fig. 11) as described in Steps 1 - 4 below.

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 in Connection Sizes table in Fig. 7).

3.Feed wires through the raceway built into the corner post to the 24-v barrier located on the left side of the control

box. See Fig. 12. The raceway provides the UL-required (Underwriters' Laboratories) clearance between highand low-voltage wiring.

4.Connect thermostat wires to screw terminals on lowvoltage connection board.

HEAT ANTICIPATOR SETTINGS Ð Set heat anticipator settings at .14 amp for the ®rst stage and .20 amp for secondstage heating.

Table 2 Ð Electrical Data

UNIT	NOMINAL	IFM	VOLTAGE		COMPR		OFM			IFM	COMBUSTION	POWER SUPPLY		DISCONNECT
	VOLTAGE		RANGE		(ea)			(ea)			FAN MOTOR			SIZE*
48TJ		TYPE
	(60 Hz)		Min	Max	RLA	LRA	Hp		FLA	FLA	FLA	MCA	MOCP²	FLA	LRA
	208/230	Std	187	254	13.6	73.4	1¤4		1.4	5.8	.57	39.2/39.2	45/45	41/41	194/194
	(3 phase)
008	460	Std	414	508	6.2	37.7	1¤4		0.8	2.6	.30	18.0	25	19	99
(71¤2 Tons)	(3 phase)
	575	Std	518	632	4.9	31.0	1¤4		0.8	2.6	.30	14.2	20	15	81
	(3 phase)
	208/230	Std	187	254	15.8	92.0	1¤4		1.4	5.8	.57	44.2/44.2	50/50	46/46	231/231
	(3 phase)
009	460	Std	414	508	7.4	46.0	1¤4		0.8	2.6	.30	20.7	25	22	116
(81¤2 Tons)	(3 phase)
	575	Std	518	632	5.9	44.0	1¤4		0.8	2.6	.30	16.5	20	17	107
	(3 phase)
	208/230	Std	187	254	17.9	110.0	1¤4		1.4	5.8	.57	48.9/48.9	60/60	51/51	267/267
	(3 phase)	Alt								7.5		50.6/50.6	60/60	53/53	286/286
012	460	Std	414	508	8.6	55.0	1¤4		0.8	2.6	.30	23.4	30	24	134
(10 Tons)	(3 phase)	Alt								3.4		24.2	30	25	173
	575	Std	518	632	6.4	44.0	1¤4		0.8	2.6	.30	17.6	20	18	107
	(3 phase)	Alt								3.4		18.2	20	19	139
	208/230	Std	187	254	23.0	146.0	1¤4		1.4	10.6	.57	65.2/65.2	80/80	68/68	383/383
	(3 phase)	Alt								15.0		69.6/69.6	80/80	73/73	406/406
014	460	Std	414	508	10.4	73.0	1¤4		0.8	4.8	.30	29.6	35	31	192
(121¤2 Tons)	(3 phase)	Alt								7.4		32.2	35	34	203
	575	Std	518	632	8.3	58.4	1¤4		0.8	4.8	.30	23.6	30	25	154
	(3 phase)	Alt								7.4		25.7	35	27	163

	LEGEND
FLA	Ð Full Load Amps
HACR	Ð Heating, Air Conditioning and Refrigeration
IFM	Ð Indoor (Evaporator) Fan Motor
LRA	Ð Locked Rotor Amps
MCA	Ð Minimum Circuit Amps
MOCP Ð Maximum Overcurrent Protection
NEC	Ð National Electrical Code
OFM	Ð Outdoor (Condenser) Fan Motor
RLA	Ð Rated Load Amps
UL	Ð Underwriters' Laboratories

*Used to determine minimum disconnect size per NEC. ²Fuse or HACR circuit breaker.

NOTES:

1.In compliance with NEC requirements for multimotor and combination load equipment (refer to NEC Articles 430 and 440), the overcurrent protective device for the unit shall be fuse or HACR breaker. Canadian units may be fuse or circuit breaker.

2.Unbalanced 3-Phase Supply Voltage

Never operate a motor where a phase imbalance in supply voltage is greater than 2%. Use the following formula to determine the percent voltage imbalance.

% Voltage Imbalance

= 100 x	max voltage deviation from average voltage
	average voltage

EXAMPLE: Supply voltage is 460-3-60.

AB = 452 v

BC = 464 v

AC = 455 v

Average Voltage = 452 + 464 + 455

3

= 1371 3

= 457

NOTE: The 575-v 48TJ008-014 units are UL, Canada, only.

Determine maximum deviation from average voltage. (AB) 457 - 452 = 5 v

(BC) 464 - 457 = 7 v (AC) 457 - 455 = 2 v

Maximum deviation is 7 v.

Determine percent voltage imbalance.

7

% Voltage Imbalance = 100 x

457

= 1.53%

This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%.

IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local electric utility company immediately.

9

	LEGEND
C	Ð Contactor
COMPS	Ð Compressors
IFC	Ð Indoor (Evaporator) Fan
	Contactor
NEC	Ð National Electrical Code
TB	Ð Terminal Block

Terminal Block Connection

Splice Connection

(Factory Supplied)

Field Wiring

Factory Wiring

Fig. 10 Ð Power Wiring Connections

UNIT

INTEGRATED

GAS UNIT

CONNECTION

CONTROLLER

BOARD

(IGC)

LEGEND

AHA Ð Adjustable Heat Anticipator

CC Ð Cooling Compensator

TC Ð Thermostat-Cooling

TH Ð Thermostat-Heating

Field Wiring

Factory Wiring

Fig. 11 Ð Low-Voltage Connections

RACEWAY

Fig. 12 Ð Field Control Wiring Raceway

10

Step 8 Ð Adjust Factory-Installed Options

APOLLO CONTROL Ð The optional Apollo control is used to actively monitor all modes of operation as well as indoor (evaporator) fan status, ®lter status, and indoor-air quality. The Apollo control is designed to work with Carrier TEMP and VVTt systems.

The thermostat must be wired to the Apollo control before starting the unit. Refer to the Apollo control installation instructions for information on installing the thermostat. See Fig. 13 for Apollo location.

MANUAL OUTDOOR-AIR DAMPER Ð The outdoor-air hood and screen are attached to the basepan at the bottom of the unit for shipping.

Assembly:

1.Determine quantity of ventilation required for building. Record amount for use in Step 8.

2.Remove ®lter access panel by raising panel and swinging panel outward. Panel is now disengaged from track and can be removed. No tools are required to remove the ®lter access panel. Remove outdoor-air opening panel. Save panels and screws. See Fig. 14.

3.Separate hood and screen from basepan by removing the screws and brackets securing them. Save all screws and discard brackets.

4.Replace outdoor air opening panel with screws saved from Step 2.

5.Place hood on front of outdoor-air opening panel. See Fig. 15 for hood details. Secure top of hood with the 6 screws removed in Step 3. See Fig. 16.

6.Remove and save 8 screws (4 on each side) from sides of the manual outdoor-air damper.

7.Align screw holes on hood with screw holes on side of manual outdoor-air damper. See Fig. 15 and 16. Secure hood with 8 screws from Step 6.

8.Adjust minimum position setting of the damper blade by adjusting the manual outdoor-air adjustment screws on the front of the damper blade. See Fig. 14. Slide blade vertically until it is in the appropriate position determined by Fig. 17. Tighten screws.

WIRING TO

APOLLO

CONTROL

THERMOSTAT

CONTROL

WIRING

OUTDOOR

AIR OPENING

PANEL

Fig. 14 Ð Damper Panel with Manual

Outdoor-Air Damper Installed

Fig. 15 Ð Outdoor-Air Hood Details

HOOD

NOT

SHOWN)

	Fig. 13 Ð Apollo Control Factory-Installed	Fig. 16 Ð Damper with Hood Attached
	in Typical Unit

11

Fig. 17 Ð Position Setting

9.Remove and save screws currently on sides of hood. Insert screens. Secure screens to hood using the screws. See Fig. 16.

10.Replace ®lter access panel. Ensure ®lter access panel slides along the tracks and is securely engaged.

OPTIONAL DURABLADE ECONOMIZER Ð The optional economizer hood assembly is packaged and shipped in the ®lter section. Damper blades and control boards are installed at the factory and the economizer is shipped in the vertical discharge position.

NOTE: Horizontal discharge block-off plate is shipped with the air hood package. If unit is to be used for vertical discharge application, discard this plate.

Assembly

1.Determine if ventilation air is required in building. If so, determine the minimum amount to be supplied by each unit and record quantity of ventilation air needed for use in Step 8.

2.Remove ®lter access panel by raising panel and swinging panel outward. Panel is now disengaged from track and can be removed. No tools are required to remove ®lter access panel. Remove outdoor-air opening panel. Save panels and screws. See Fig. 18. Remove optional economizer and outdoor-air damper hood package from ®lter section.

3.Assemble outdoor-air hood top and side plates as shown in Fig. 19. Install seal strips on hood top and sides. Put aside screen retainer and retainer screw for later assembly. Do not attach hood to unit at this time.

4.On 012 and 014 units, install vertical discharge blockoff plate over duct openings. See Fig. 20.

5.Slide economizer into unit and secure with screws. See Fig. 21.

NOTE: Be sure to engage rear economizer ¯ange under tabs in vertical return-air opening.

6.To convert to horizontal discharge application:

a. Rotate the economizer 90 degrees until the economizer motor faces the condenser section (see Fig. 22).

b. Rotate the barometric relief damper hinge 90 degrees. Barometric relief damper should open vertically to operate properly.

c.Install horizontal discharge block-off plate over the opening on the access panel. (Block-off plate MUST be installed before installing hood assembly.) See Fig. 23.

7.Insert economizer plug into economizer harness. Remove tape from barometric relief damper. See Fig. 21.

8.If ventilation air is not required, proceed to Step 9. If ventilation air is required, determine the minimum position setting for required air¯ow. See Fig. 24. Adjust minimum position setting by adjusting the screws on the position setting bracket. See Fig. 25. Slide bracket until

the top screw is in the position determined by Fig. 24. Tighten screws.

9.Remove tape from outdoor-air thermostat (OAT). Fasten OAT to inside of hood using screws and speed clips provided. See Fig. 26. Make sure OAT terminals are positioned up.

10.Replace outdoor-air opening panel using screws from Step 2. Replace ®lter access panel. Ensure the ®lter access panel slides along the tracks and is securely engaged.

11.Fasten hood top and side plate assembly to outdoor-air opening panel with screws provided.

12.Place knob supplied with economizer on OAT. See Fig. 26. Set for 3° F below indoor room thermostat setting. If accessory enthalpy control (EC) is used in place of OAT, see instructions shipped with EC for installation and adjustment. See Fig. 26.

13.Connect OAT per Fig. 27.

14.Slide outdoor-air inlet screens into screen track on hood side plate. While holding screens in place, fasten screen retainer to hood using screws provided.

NOTE: Refer to Fig. 28 for Durablade economizer barometric relief damper characteristics.

OUTDOOR-AIR	FILTER ACCESS
OPENING PANEL	PANEL

Fig. 18 Ð Access Panel Locations

12