Carrier 50TFQ008-012 User Manual

50TFQ008-012 Single-Package Rooftop Heat Pump Units

Installation, Start-Up and

Service Instructions

CONTENTS

Page

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

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-43

Step 1— Provide Unit Support. . . . . . . . . . . . . . . . . . . . . . .1

•ROOF CURB

•SLAB MOUNT

•ALTERNATE UNIT SUPPORT

Step 2 — Field Fabricate Ductwork . . . . . . . . . . . . . . . . . .		3
Step 3	— Install Condensate Drain Line
and External Trap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		3
Step 4	— Rig and Place Unit. . . . . . . . . . . . . . . . . . . . . . . . .	3
• POSITIONING
Step 5	— Make Electrical Connections . . . . . . . . . . . . . .	7

•FIELD POWER SUPPLY

•FIELD CONTROL WIRING

•DEFROST BOARD

•HEAT ANTICIPATOR SETTINGS

Step 6 — Adjust Factory-Installed Options . . . . . . . . .12

•DISCONNECT SWITCH

•CONVENIENCE OUTLET

•NOVAR CONTROLS

•MANUAL OUTDOOR-AIR DAMPER

•PREMIERLINK™ CONTROL

•OPTIONAL ECONOMI$ER IV AND ECONOMI$ER2

•ECONOMI$ER IV STANDARD SENSORS

•ECONOMI$ER IV CONTROL MODES

Step 7 — Adjust Indoor-Fan Speed . . . . . . . . . . . . . . . . .25

PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44 START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44-47 SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47-49 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49-53 INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54 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 qualified service personnel should install, repair, or service air-conditioning equipment.

Untrained personnel can perform basic maintenance functions of cleaning coils and filters and replacing filters. 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 fire extinguisher available for all brazing operations.

Before performing service or maintenance operations on unit, turn off main power switch to unit and install lockout tag. Ensure voltage listed on unit data plate agrees with electrical supply provided for the unit. Electrical shock could cause personal injury.

INSTALLATION

Unit is shipped in the vertical configuration. To convert to horizontal configuration, remove side duct opening covers. Using the same screws, install covers on vertical duct openings with the insulation-side down. Seals around duct openings must be tight.

Step 1 — Provide Unit Support

ROOF CURB — Assemble and install the accessory roof curb in accordance with instructions shipped with the curb. See Fig. 1. Install insulation, cant strips, roofing felt, and counter flashing as shown. Ductwork must be attached to curb. If electric or control power will be routed through the basepan, use the proper accessory kit listed in Fig. 1, available from your local distributor. Attach the accessory thru-the-bottom service connections to the basepan in accordance with the accessory installation instructions. Connections must be installed before the unit is set on the roof curb.

IMPORTANT: The gasketing of the unit to the roof curb is critical for a water-tight seal. Install gasket supplied with the roof curb as shown in Fig. 1. Improperly applied gasket can also result in air leaks and poor unit performance.

The roof curb should be level. Unit leveling tolerances are shown in Fig. 2. This is necessary for the 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, specifications or designs without notice and without incurring obligations.

Book	1	4	Catalog No. 04-53500019-01	Printed in U.S.A.	Form 50TFQ-9SI	Pg 1	9-05	Replaces: 50TFQ-7SI
Tab	5a	5a

Fig. 1 — Roof Curb Details

2

MAXIMUM ALLOWABLE

DIFFERENCE (in.)

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

Fig. 2 — Unit Leveling Tolerances

SLAB MOUNT (Horizontal Units Only) — Provide a level concrete slab that extends a minimum of 6 in. beyond the unit cabinet on all sides. Install a gravel apron in front of the outdoor coil air inlet to prevent grass and foliage from obstructing airflow.

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

ALTERNATE UNIT SUPPORT — When the curb or adapter cannot be used, support unit with sleeper rails using unit curb or adapter support area. If sleeper rails cannot be used, support the long sides of the unit with a minimum of 3 equally spaced 4-in. x 4-in. pads on each side.

Step 2 — Field Fabricate Ductwork — On vertical discharge units, secure all ducts to the roof curb and building structure. Do not connect ductwork to the unit. For horizontal applications, field-supplied flanges should be attached to horizontal discharge openings and all ductwork attached to the flanges. Insulate and weatherproof all external ductwork, joints, and roof openings with counter flashing 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 fire codes.

A minimum clearance is not required around ductwork. Cabinet return-air static pressure (a negative condition) should not exceed 0.35 in. wg with economizer, or 0.45 in. wg without economizer.

Step 3 — Install Condensate Drain Line and External Trap — Condensate drain connections are located at the bottom and end of the unit. Unit discharge connections do not determine the use of drain connections; either drain connection can be used in vertical or horizontal applications.

When using the standard end 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 end connection. The center drain plug looks like a star connection, but can be removed with a 1/2-in. socket drive extension. See Fig. 3. 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. If drain line is installed downstream from the external trap,

pitch the line away from the unit at 1/4-in. per ft of run. Do not use a pipe size smaller than the unit connection. See Fig. 4.

Step 4 — Rig and Place Unit — Inspect the unit for transportation damage. File any claim with the transportation agency. Keep the unit upright and do not drop it. Spreader bars are not required if top crating is left on the unit. Rollers may be used to move the unit across a roof. Level by using the unit frame as a reference. See Table 1 and Fig. 5 for additional information. Operating weight is shown in Table 1 and Fig. 5.

Lifting holes are provided in the base rails as shown in Fig. 5 and 6. Refer to rigging instructions on the unit.

POSITIONING — Maintain clearance around and above the unit to provide proper airflow and service access. See Fig. 6.

Position the unit on the roof curb so that the following clearances are maintained: 1/4-in. clearance between the roof curb and base rails on each side and in front of the unit; 35/16-in. clearance between the roof curb and the outdoor fan end of the unit (see Fig. 1, section C-C).

Do not install the unit indoors. Do not locate the unit air inlet near exhaust vents or other sources of contaminated air.

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

After the unit is in position, remove the polyethylene shipping wrapper and rigging skid.

HORIZONTAL	DRAIN PLUG
DRAIN OUTLET

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

Fig. 3 — Condensate Drain Pan (Side View)

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

Fig. 4 — Condensate Drain Piping Details

3

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.Unit weights do not include economizer. See Table 1 for economizer weights.

All panels must be in place when rigging. Unit is not designed for handling by a fork truck. Damage to unit may result.

50TFQ	WEIGHT			A		B		C
	Lb	Kg	in.	mm	in.	mm	in.		mm
008	940	426	77.42	1966.5	41.5	1054	42.12		1070
009	965	438	77.42	1966.5	41.5	1054	42.12		1070
012	1015	460	77.42	1966.5	41.5	1054	42.12		1070

Fig. 5 — Rigging Details

4

Table 1 — Physical Data

UNIT SIZE 50TFQ		008			009			012
NOMINAL CAPACITY (tons)		71/2			81/2			10
OPERATING WEIGHT (lb)
Unit		940			965			1015
Economizer
EconoMi$er IV		75			75			75
Roof Curb*		143			143			143
COMPRESSOR (Hermetic)			Reciprocating						Scroll
Quantity		2			2			2
Oil (oz)		45 ea			54 ea				54 ea
REFRIGERANT TYPE					R-22
Operating Charge (lb-oz)
Circuit 1		5-14			8- 6			7-14
Circuit 2		5-13			8-13			8- 3
OUTDOOR COIL		Enhanced Copper Tubes, Aluminum Lanced Fins, Acutrol™ Feed Device
Rows...Fins/in.		1...17			2...17			2...17
Total Face Area (sq ft)		20.50			18.00			18.30
OUTDOOR FAN					Propeller Type
Nominal Cfm		6500			6500			6500
Quantity...Diameter (in.)		2...22			2...22			2...22
Motor Hp...Rpm		1/4...1100			1/4...1100			1/4...1100
Watts Input (Total)		500			500			500
INDOOR COIL		Enhanced Copper Tubes, Aluminum Double-Wavy Fins, Acutrol Feed Device
Rows...Fins/in.		3...15			3...15			3...15
Total Face Area (sq ft)		8.0			8.0			11.1
INDOOR FAN					Centrifugal Type
Quantity...Size (in.)	Std	1...15 x 15			1...15 x 15				1...15 x 15
	Alt	1...15 x 15			—				1...15 x 15
	High-Static	1...15 x 15			1...15 x 15				1...15 x 15
Type Drive	Std	Belt			Belt				Belt
	Alt	Belt			—				Belt
Nominal Cfm	High-Static	Belt			Belt				Belt
		3000			3600			4000
Maximum Continuous Bhp	Std	2.40			2.40			2.40
	Alt	2.40			—			2.90
	High-Static	3.70			3.70			5.25
Motor Frame Size	Std	56			56			56
	Alt	56			—			56
	High-Static	56			56			56
Nominal Rpm	Std	—			—				—
	Alt	—			—				—
	High-Static	1725			1725			1725
Fan Rpm Range	Std	590840			685935			685935
	Alt	685935			—			835-1085
Motor Bearing Type	High-Static	860-1080			860-1080			830-1130
		Ball			Ball				Ball
Maximum Allowable Rpm		2100			2100			2100
Motor Pulley Pitch Diameter Min/Max (in.)	Std	2.4/3.4			2.8/3.8			2.8/3.8
	Alt	2.8/3.8			—			3.4/4.4
	High-Static	4.0/5.0			4.0/5.0			2.8/3.8
Nominal Motor Shaft Diameter (in.)	Std	5/8			5/8			5/8
	Alt	5/8			—			7/8
Fan Pulley Pitch Diameter (in.)	High-Static	7/8			7/8			7/8
	Std	7.0			7.0			7.0
	Alt	7.0			—			7.0
	High-Static	8.0			8.0			5.8
Belt, Quantity...Type...Length (in.)	Std	1...A...53			1...A...48				1...A...49
	Alt	1...A...49			—				1...A...51
	High-Static	1...A...65			1...A...53				1...BX...48
Pulley Center Line Distance (in.)	Std	16.75-19.25			16.75-19.25			15.85-17.50
	Alt	16.75-19.25			—			15.85-17.50
	High-Static	16.75-19.25			16.75-19.25			15.85-17.50
Speed Change per Full Turn of	Std	50			50			50
Moveable Pulley Flange (rpm)	Alt	50			—			50
	High-Static	60			60			60
Moveable Pulley Maximum Full Turns	Std	5			5			5
From Closed Position	Alt	5			—			5
	High-Static	5			5			6
Factory Setting	Std	5			5			5
	Alt	5			—			5
	High-Static	5			5			5
Factory Speed Setting (rpm)	Std	590			685			685
	Alt	685			—			835
Fan Shaft Diameter at Pulley (in.)	High-Static	860			880			887
		1			1			1
HIGH-PRESSURE SWITCH (psig)
Standard Compressor Internal Relief (Differential)			450 ± 50
Cutout			428
Reset (Auto.)			320
LOSS-OF-CHARGE (LOW-PRESSURE) SWITCH (psig)
Cutout			7 ± 3
Reset (Auto.)			22 ± 5
FREEZE PROTECTION THERMOSTAT (F)
Opens			30 ± 5
Closes			45 ± 5
OUTDOOR-AIR INLET SCREENS					Cleanable.
		Screen quantity and size vary based on options selected.
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
LEGEND		*Weight of 14-in. roof curb.
Bhp — Brake Horsepower

5

6

Fig. 6 — Base Unit Dimensions

Step 5 — 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 (American National Standards Institute)/ NFPA (National Fire Protection Association) 70 latest year and local electrical codes. Failure to follow this warning could result in the installer being liable for personal injury of others.

FIELD POWER SUPPLY — All units except 208/230-v units are factory-wired for the voltage shown on the unit nameplate. If the 208/230-v unit is to be connected to a 208-v power supply, the transformer must be rewired by disconnecting the black wire from the 230-v 1/4-in. male spade terminal on the transformer and connecting it to the 208-v 1/4-in. male spade terminal from the transformer.

Refer to the unit label diagram for additional information. Pigtails are provided for field wire connections. Use factorysupplied splices or a UL (Underwriters’ Laboratories) approved copper/aluminum connector.

When installing units, provide a disconnect per the NEC.

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

Install field wiring as follows:

1.Install conduit through the side panel openings. For units without electric heat, install conduit between the disconnect and control box.

2.Install power lines to terminal connections as shown in Fig. 7.

3.For units with electric heat, refer to Table 2 and Accessory Installation Instructions.

During operation, voltage to compressor terminals must be within range indicated on unit nameplate (see Tables 3A and 3B). On 3-phase units, voltages between phases must be balanced within 2%, and the current within 10%. Use the formula shown in Tables 3A and 3B, Note 2 on page 11 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.

208/230-3-60		575-3-60
460-3-60
		LEGEND
C	— Contactor
COMP —		Compressor
IFC	—	Indoor-Fan Contactor
NEC	—	National Electrical Code
TB	—	Terminal Block
		Field Wiring
		Factory Wiring
		Splice Connection
		(Factory-Supplied)

Fig. 7 — Power Wiring Connections

7

Table 2 — Electric Heating Capacities

	50TFQ	UNIT VOLTAGE	ACCESSORY		ELECTRIC HEATER	SINGLE POINT BOX
					PART NUMBER	PACKAGE NO.
	UNIT SIZE	(60 Hz)		kW
					CRHEATER---A00	CRSINGLE---A00
			7.8/	9.6/10.4	017	007
		208/230/240	12.0/14.7/16.0		010	007
			18.6/22.8/24.8		011	009
		(3 phase)
			24.0/29.4/32.0		012	009
			31.8/39.0/42.4*		012 and 017	013
	008, 009		12.8/13.9		016	006
		460/480	15.2/16.5		013	006
			25.6/27.8		014	008
		(3 phase)
			30.4/33.0		015	008
			38.4/41.7*		014 and 016	010
		575		17.0	018	006
		(3 phase)		34.0	019	006†
			7.8/	9.6/10.4	017	012
		208/230/240	12.0/14.7/16.0		010	012
			24.0/29.4/32.0		012	015
		(3 phase)
			31.8/39.0/42.4*		012 and 017	017
			37.6/46.2/50.0*		010 and 012	017
	012		15.2/16.5		013	011
		460/480	25.6/27.8		014	014
			30.4/33.0		015	014
		(3 phase)
			38.4/41.7*		014 and 016	016
			45.9/50.0*		013 and 015	016
		575		17.0	018	011
				34.0	019	014
		(3 phase)
				51.0*	018 and 019	016

*Two heater packages required to provide kW indicated.

†Use CRSINGLE008A00 for units with an electrical convenience outlet.

NOTES:

1.The rated heater voltage is 240, 480, and 575 v. If power distribution voltage varies from rated heater voltage, heater kW will vary accordingly.

2.To determine heater kW at voltages other than those shown in table, use the following formula:

Heater kW new = Heater kW rated x (unit power distribution voltage/rated heater voltage)2

As an example:

For a 16 kW heater rated at 240 v with a power distribution voltage of 215 v kW new = 16 kW (215/240)2

kW new = 12.8 kW (rating at 215 v)

Table 3A — Electrical Data (Units Without Electrical Convenience Outlet)

			VOLTAGE		COMPRESSOR				ELECTRIC HEAT*			POWER SUPPLY				DISCONNECT
50TFQ	NOMINAL	IFM	RANGE		(each)		OFM	IFM									SIZE†
UNIT SIZE	V-PH-Hz	TYPE	Min	Max	RLA	LRA	FLA	FLA	Nominal	FLA		MCA		MOCP		FLA		LRA
									kW**
									—	—		38.8/ 38.8		40/ 40††		41/ 41		229/229
									7.8/10.4	21.7/ 25.0		65.9/	70.0	70/	70	66/	69	251/254
		STD	187	254	13.4	91.0	1.4	5.8	12.0/16.0	33.3/ 38.5		80.4/	86.9	90/	90	79/	85	262/268***
									18.6/24.8	51.6/	59.7	103.3/113.4		110/125		100/109		281/289***
									24.0/32.0	66.6/	77.0	122.0/135.0		125/150		117/129		296/306***
	208/230-3-60								31.8/42.4	88.3/102.0		149.1/166.3		150/175		142/158		317/331***
									—	—		43.6/ 43.6		45/ 45††		46/ 46		273/273
									7.8/10.4	21.7/	25.0	70.7/	74.8	80/	80	71/	75	294/298
		HIGH-STATIC	187	254	13.4	91.0	1.4	10.6	12.0/16.0	33.3/	38.5	85.2/	91.7	90/100		85/	91	306/311***
									18.6/24.8	51.6/	59.7	108.1/118.2		110/125		106/115		324/332***
									24.0/32.0	66.6/	77.0	126.8/139.8		150/150		123/135		339/350***
									31.8/42.4	88.3/102.0		153.9/171.1		175/175		148/164		361/375***
									—	—		19.1		20††		20		108
									13.9	16.7		40.0		40††		39		124
008		STD	414	508	6.7	42.0	0.7	2.6	16.5	19.8		43.8		45††		43		128
(71/2 Tons)									27.8	33.4		60.8		70		58		141
									33.0	39.7		68.7		70		66		147
	460-3-60								41.7	50.2		81.8		90		78		158
									—	—		21.3		25††		23		130
									13.9	16.7		42.2		45††		42		146
		HIGH-STATIC	414	508	6.7	42.0	0.7	4.8	16.5	19.8		46.0		50††		45		149
									27.8	33.4		63.0		70		61		163
									33.0	39.7		70.9		80		68		169
									41.7	50.2		84.0		90		80		180***
									—	—		15.4		20††		16		97
		STD						2.6	17.0	17.1		36.7		40††		36		114
	575-3-60		518	632	5.4	39.0	0.7		34.0	34.1		58.0		60††		55		131
									—	—		17.1		20††		18		114
		HIGH-STATIC						4.8	17.0	17.1		38.5		40††		38		132
									34.0	34.1		59.7		60††		57		149

NOTE: Legend and Notes for Electrical Data are on page 11.

8

Table 3A — Electrical Data (Units Without Electrical Convenience Outlet) (cont)

			VOLTAGE		COMPRESSOR					ELECTRIC HEAT*			POWER SUPPLY					DISCONNECT
50TFQ	NOMINAL	IFM	RANGE			(each)		OFM	IFM										SIZE†
UNIT SIZE	V-PH-Hz	TYPE	Min	Max	RLA		LRA	FLA	FLA	Nominal	FLA		MCA		MOCP		FLA		LRA
										kW**
										—	—		44.6/ 44.6		45/ 45††		47/ 47		321/321
										7.8/10.4	21.7/	25.0	71.7/	75.9	80/	80	72/	75	343/346
		STD	187	254	16.0		137.0	1.4	5.8	12.0/16.0	33.3/	38.5	86.2/	92.7	90/100		85/	91	354/360***
										18.6/24.8	51.6/	59.7	109.1/119.2		110/125		106/115		373/381***
										24.0/32.0	66.6/	77.0	127.9/140.9		150/150		123/135		388/398***
	208/230-3-60									31.8/42.4	88.3/102.0		155.0/172.1		175/175		148/164		409/428***
										—	—		49.4/ 49.4		50/ 50††		52/ 52		365/365
										7.8/10.4	21.7/	25.0	76.5/	80.7	80/	90	77/	81	386/390***
		HIGH-STATIC	187	254	16.0		137.0	1.4	10.6	12.0/16.0	33.3/	38.5	91.0/	97.5	100/100		91/	96	398/403***
										18.6/24.8	51.6/	59.7	113.9/124.0		125/125		112/121		416/424***
										24.0/32.0	66.6/	77.0	132.7/145.7		150/150		129/141		431/442***
										31.8/42.4	88.3/102.0		159.8/176.9		175/200		154/170		453/467***
										—	—		22.7		25††		24		162
										13.9	16.7		43.6		45††		43		178
009		STD	414	508	8.3		69.0	0.7	2.6	16.5	19.8		47.4		50††		46		182
(81/2 Tons)										27.8	33.4		64.4		70		62		195
										33.0	39.7		72.3		80		69		201
	460-3-60									41.7	50.2		85.4		90		81		212***
										—	—		24.9		25††		26		184
										13.9	16.7		45.8		50††		45		200
		HIGH-STATIC	414	508	8.3		69.0	0.7	4.8	16.5	19.8		49.6		50††		49		203
										27.8	33.4		66.6		70		65		217
										33.0	39.7		74.5		80		72		223
										41.7	50.2		87.6		90		84		234***
										—	—		17.6		20††		18		135
		STD							2.6	17.0	17.1		39.0		40††		38		152
	575-3-60		518	632	6.4		58.0	0.7		34.0	34.1		60.2		70††		58		169
										—	—		19.4		20††		20		152
		HIGH-STATIC							4.8	17.0	17.1		40.7		45††		40		170
										34.0	34.1		62.0		70		60		187
										—	—		47.3/ 47.3		50/ 50††		49/ 49		295/295
										7.8/10.4	21.7/	25.0	74.4/	78.6	80/	80	74/	78	317/320
		STD	187	254	17.2		124.0	1.4	5.8	12.0/16.0	33.3/	38.5	88.9/	95.4	90/100		88/	94	328/334***
										24.0/32.0	66.6/	77.0	130.6/143.6		150/150		126/138		362/372***
										31.8/42.4	88.3/102.0		157.7/174.8		175/175		151/167		383/397***
										37.6/50.0	104.4/120.3		177.8/167.6		200/175		170/188		399/415***
										—	—		49.0/ 49.0		50/ 50††		51/ 51		314/314
										7.8/10.4	21.7/	25.0	76.1/	80.8	80/	90	76/	80	336/389***
	208/230-3-60	ALT	187	254	17.2		124.0	1.4	7.5	12.0/16.0	33.3/	38.5	90.6/	97.1	100/100		90/	96	347/353***
										24.0/32.0	66.6/	77.0	132.3/145.3		150/150		128/140		381/391***
										31.8/42.4	88.3/102.0		159.4/176.5		175/200		153/169		402/416***
										37.6/50.0	104.4/120.3		179.5/169.3		200/200		171/190		418/434***
										—	—		56.5/ 56.5		60/ 60††		60/ 60		362/362
										7.8/10.4	21.7/	25.0	83.6/	87.8	90/	90	85/	89	384/387***
		HIGH-STATIC	187	254	17.2		124.0	1.4	15.0	12.0/16.0	33.3/	38.5	98.1/104.6		100/110		98/104		395/401***
										24.0/32.0	66.6/	77.0	139.8/152.8		150/175		137/149		429/439***
										31.8/42.4	88.3/102.0		166.9/184.0		175/200		162/177		450/464***
										37.6/50.0	104.4/120.3		187.0/176.8		200/200		180/198		466/482***
										—	—		23.4		25††		24		143
										16.5	19.8		48.1		50††		47		163
		STD	414	508	8.6		59.6	0.7	2.6	27.8	33.4		65.1		70		63		176
										33.0	39.7		73.0		80		70		183
										41.7	50.2		86.1		90		82		193***
012										50.0	60.1		83.5		90		93		203***
(10 Tons)										—	—		24.2		25††		25		182
										16.5	19.8		48.9		50††		48		202
	460-3-60	ALT	414	508	8.6		59.6	0.7	3.4	27.8	33.4		65.9		70		64		216
										33.0	39.7		73.8		80		71		222
										41.7	50.2		86.9		90		83		233***
										50.0	60.1		84.3		90		94		243***
										—	—		28.2		30††		30		176
										16.5	19.8		52.9		60††		53		196
		HIGH-STATIC	414	508	8.6		59.6	0.7	7.4	27.8	33.4		69.9		70		68		210
										33.0	39.7		77.8		80		76		216
										41.7	50.2		90.9		100		88		227***
										50.0	60.1		88.3		100		99		237***
										—	—		18.7		20††		20		118
		STD	518	632	6.9		49.4	0.7	2.6	17.0	17.1		40.1		45††		39		135
										34.0	34.1		61.4		70		59		152
										51.0	51.2		69.9		70		78		169
										—	—		19.4		20††		20		149
	575-3-60	ALT	518	632	6.9		49.4	0.7	3.4	17.0	17.1		40.7		45††		40		166
										34.0	34.1		62.0		70		60		183
										51.0	51.2		70.6		80		79		201***
										—	—		22.6		25††		24		145
		HIGH-STATIC	518	632	6.9		49.4	0.7	7.4	17.0	17.1		43.9		45††		44		162
										34.0	34.1		65.2		70		63		179
										51.0	51.2		73.8		80		83		196***

NOTE: Legend and Notes for Electrical Data are on page 11.

9

Table 3B — Electrical Data (Units With Electrical Convenience Outlet)

			VOLTAGE		COMPRESSOR				ELECTRIC			POWER SUPPLY				DISCONNECT
50TFQ	NOMINAL	IFM	RANGE		(each)		OFM	IFM	HEAT*								SIZE†
UNIT SIZE	V-PH-Hz	TYPE	Min	Max	RLA	LRA	FLA	FLA	Nominal	FLA		MCA		MOCP		FLA		LRA
									kW**
									—	—		43.6/ 43.6		45/ 45††		46/ 46		234/234
									7.8/10.4	21.7/	25.0	70.7/	74.8	80/	80	71/	75	256/259
		STD	187	254	13.4	91.0	1.4	5.8	12.0/16.0	33.3/	38.5	85.2/	91.7	90/100		85/	91	267/272***
									18.6/24.8	51.6/	59.7	108.1/118.2		110/125		106/115		285/294***
									24.0/32.0	66.6/	77.0	126.8/139.8		150/150		123/135		300/311***
	208/230-3-60								31.8/42.4	88.3/102.0		153.9/171.1		175/175		148/164		322/336***
									—	—		48.4/ 48.4		50/ 50††		52/ 52		277/277
									7.8/10.4	21.7/	25.0	75.5/	79.6	80/	80	77/	81	299/302***
		HIGH-STATIC	187	254	13.4	91.0	1.4	10.6	12.0/16.0	33.3/	38.5	90.0/	96.5	90/100		90/	96	311/316***
									18.6/24.8	51.6/	59.7	112.9/123.0		125/125		111/120		329/337***
									24.0/32.0	66.6/	77.0	131.6/144.6		150/150		128/140		344/354***
									31.8/42.4	88.3/102.0		158.7/175.9		175/200		153/169		366/379***
									—	—		21.3		25††		23		110
									13.9	16.7		42.1		45††		42		127
008		STD	414	508	6.7	42.0	0.7	2.6	16.5	19.8		46.0		50††		45		130
(71/2 Tons)									27.8	33.4		63.0		70		61		143
									33.0	39.7		70.9		80		68		150
	460-3-60								41.7	50.2		84.0		90		80		160***
									—	—		23.5		25††		25		132
									13.9	16.7		44.3		45††		44		148
		HIGH-STATIC	414	508	6.7	42.0	0.7	4.8	16.5	19.8		48.2		50††		48		151
									27.8	33.4		65.2		70		63		165
									33.0	39.7		73.1		80		71		171
									41.7	50.2		86.2		90		83		182***
									—	—		17.1		20††		18		99
		STD	518	632	5.4	39.0	0.7	2.6	17.0	17.1		38.5		40††		38		116
	575-3-60								34.0	34.1		59.7		60††		57		133
									—	—		18.9		20††		20		116
		HIGH-STATIC	518	632	5.4	39.0	0.7	4.8	17.0	17.1		40.2		45††		40		133
									34.0	34.1		61.5		70		59		150
									—	—		49.4/ 49.4		50/ 50††		52/ 52		326/326
									7.8/10.4	21.7/	25.0	76.5/	80.7	80/	90	77/	81	348/351
		STD	187	254	16.0	137.0	1.4	5.8	12.0/16.0	33.3/	38.5	91.0/	97.5	100/100		91/	96	359/364
									18.6/24.8	51.6/	59.7	113.9/124.0		125/125		112/121		377/386
									24.0/32.0	66.6/	77.0	132.7/145.7		150/150		129/141		392/403
	208/230-3-60								31.8/42.4	88.3/102.0		154.8/176.9		175/200		154/170		414/428
									—	—		54.2/ 54.2		60/ 60††		58/ 58		369/369
									7.8/10.4	21.7/	25.0	81.3/	85.5	90/	90	83/	86	391/394***
		HIGH-STATIC	187	254	16.0	137.0	1.4	10.6	12.0/16.0	33.3/	38.5	95.8/102.3		100/110		96/102		403/408***
									18.6/24.8	51.6/	59.7	118.7/128.8		125/150		117/126		421/429***
									24.0/32.0	66.6/	77.0	137.5/150.5		150/175		134/146		436/446***
									31.8/42.4	88.3/102.0		164.6/181.7		175/200		159/175		458/471***
									—	—		24.9		25††		26		164
									13.9	16.7		45.7		50††		45		181
009		STD	414	508	8.3	69.0	0.7	2.6	16.5	19.8		49.6		50††		49		184
(81/2 Tons)									27.8	33.4		66.6		70		65		197
									33.0	39.7		74.5		80		72		204
	460-3-60								41.7	50.2		87.6		90		84		214***
									—	—		27.1		30††		29		186
									13.9	16.7		47.9		50††		48		202
		HIGH-STATIC	414	508	8.3	69.0	0.7	4.8	16.5	19.8		51.8		60††		51		205
									27.8	33.4		68.8		70		67		219
									33.0	39.7		76.7		80		74		225
									41.7	50.2		89.8		90		86		236***
									—	—		19.3		20††		20		137
		STD	518	632	6.4	58.0	0.7	2.6	17.0	17.1		40.7		45††		40		154
	575-3-60								34.0	34.1		62.0		70		60		171
									—	—		21.1		25††		22		154
		HIGH-STATIC	518	632	6.4	58.0	0.7	4.8	17.0	17.1		42.5		45††		42		171
									34.0	34.1		63.7		70		62		188

NOTE: Legend and Notes for Electrical Data are on page 11.

10

Table 3B — Electrical Data (Units With Electrical Convenience Outlet) (cont)

			VOLTAGE		COMPRESSOR					ELECTRIC				POWER SUPPLY					DISCONNECT
50TFQ	NOMINAL	IFM	RANGE			(each)		OFM	IFM		HEAT*									SIZE†
UNIT SIZE	V-PH-Hz	TYPE	Min	Max	RLA		LRA	FLA	FLA	Nominal		FLA		MCA		MOCP		FLA			LRA
										kW**
										—		—		52.1/ 52.1		60/ 60††		55/ 55			300/300
										7.8/10.4		21.7/	25.0	79.2/	83.4	80/	90	80/	84		322/325***
		STD	187	254	17.2		124.0	1.4	5.8	12.0/16.0		33.3/	38.5	93.7/100.2		100/110		93/	99		333/338***
										24.0/32.0		66.6/	77.0	135.4/148.4		150/150		132/144			366/377***
										31.8/42.4		88.3/102.0		162.5/179.6		175/200		157/172			388/402***
										37.6/50.0		104.4/120.3		182.6/172.4		200/200		175/193			404/420***
										—		—		53.8/ 53.8		60/ 60††		57/ 57			319/319
										7.8/10.4		21.7/	25.0	80.9/	85.1	90/	90	82/	86		341/344***
	208/230-3-60	ALT	187	254	17.2		124.0	1.4	7.5	12.0/16.0		33.3/	38.5	95.4/101.9		100/110		95/101			352/357***
										24.0/32.0		66.6/	77.0	137.1/150.1		150/175		134/145			385/396***
										31.8/42.4		88.3/102.0		164.2/181.3		175/200		158/174			407/421***
										37.6/50.0		104.4/120.3		184.3/174.1		200/200		177/195			423/439***
										—		—		61.3/ 61.3		70/ 70		66/ 66			367/367
										7.8/10.4		21.7/	25.0	88.4/	92.6	90/100		91/	94		389/392***
		HIGH-STATIC	187	254	17.2		124.0	1.4	15.0	12.0/16.0		33.3/	38.5	102.9/109.4		110/110		104/110			400/405***
										24.0/32.0		66.6/	77.0	144.6/157.6		150/175		142/154			433/444***
										31.8/42.4		88.3/102.0		171.7/188.8		175/200		167/183			455/459***
										37.6/50.0		104.4/120.3		191.8/181.6		200/200		186/204			471/487***
										—		—		25.5		30††		27			145
										16.5		19.8		50.3		60††		50			165
		STD	414	508	8.6		59.6	0.7	2.6	27.8		33.4		67.3		70		65			178
										33.0		39.7		75.2		80		73			185
										41.7		50.2		88.3		90		85			195***
012										50.0		60.1		85.6		90		96			205***
(10 Tons)										—		—		26.3		30††		28			185
										16.5		19.8		51.1		60††		51			204
	460-3-60	ALT	414	508	8.6		59.6	0.7	3.4	27.8		33.4		68.1		70		66			218
										33.0		39.7		76.0		80		73			224
										41.7		50.2		89.1		90		86			235***
										50.0		60.1		86.4		90		97			245***
										—		—		30.3		35††		32			179
										16.5		19.8		55.1		60††		55			198
		HIGH-STATIC	414	508	8.6		59.6	0.7	7.4	27.8		33.4		72.1		80		71			212
										33.0		39.7		80.0		80		78			218
										41.7		50.2		93.1		100		90			229***
										50.0		60.1		90.4		100		102			239***
										—		—		20.5		25††		22			120
		STD	518	632	6.9		49.4	0.7	2.6	17.0		17.1		41.8		45††		41			137
										34.0		34.1		63.1		70		61			154
										51.0		51.2		71.7		80		80			171***
										—		—		21.1		25††		22			151
	575-3-60	ALT	518	632	6.9		49.4	0.7	3.4	17.0		17.1		42.5		45††		42			168
										34.0		34.1		63.7		70		62			185
										51.0		51.2		72.3		80		81			202***
										—		—		24.3		25††		26			146
		HIGH-STATIC	518	632	6.9		49.4	0.7	7.4	17.0		17.1		45.7		50††		46			163
										34.0		34.1		66.9		70		65			180
										51.0		51.2		75.5		80		85			198***

	LEGEND
FLA	— Full Load Amps
HACR	— Heating, Air Conditioning and Refrigeration
IFM	— Indoor Fan Motor
LRA	— Locked Rotor Amps
MCA	— Minimum Circuit Amps
MOCP — Maximum Overcurrent Protection
NEC	— National Electrical Code
OFM	— Outdoor Fan Motor
RLA	— Rated Load Amps

*Heaters are field installed only.

†Used to determine minimum disconnect size per NEC.

**Heater capacity (kW) is based on heater voltage of 208 v, 240 v, 480 v, and 575 v. If power distribution voltage to unit varies from rated heater voltage, heater kW will vary accordingly.

††Fuse or HACR circuit breaker.

***Optional disconnect switch is unavailable.

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.

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 of 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

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 of voltage imbalance.

% Voltage Imbalance = 100 x	7
	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.

11

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

NOTE: If using a Carrier electronic thermostat, set the thermostat configuration for “non-heat pump operation.” This family of products does not require an O terminal to energize the reversing valve.

Route the thermostat cable or equivalent single leads of colored wire from the subbase terminals to the low-voltage connections on the unit (shown in Fig. 8A and 8B) as described in Steps 1 through 4 below.

NOTE: For wire runs up to 50 ft, use no. 18 AWG (American Wire Gage) insulated wire (35 C minimum). For 51 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.

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

2.Pass control wires through the hole provided on the unit (see connection D in Connection Sizes table in Fig. 6).

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. 9. The raceway provides the UL required clearance between the high-voltage and low-voltage wiring.

4.Connect the thermostat wires to the screw terminals of the low-voltage connector (see Fig. 8A and 8B).

NOTE: If the unit is mounted on a roof curb and electrical power will be run up “thru-the-bottom,” use accessory kit number CRBTMPWR002A01. This kit, available from your local distributor, ensures a watertight seal. Refer to the accessory installation instructions for information on power wiring. Refer to Fig. 6 for drilling holes in basepan.

COOL STAGE 1		Y1/W2	R
FAN		G	G
HEAT STAGE 1		W/W1	Y1	WIRE
				CONNECTIONS
COOL STAGE 2		Y/Y2	Y2	TO
				LOW-VOLTAGE
HEAT STAGE 2		O/W2	W1	SECTION
				(CONNECTION
24 VAC HOT		R	W2	BOARD)
24 VAC COM		C	C
			IPD/X
N/A
OUTDOOR AIR		S1
SENSOR		S2
THERMOSTAT DIPSWITCH SETTINGS
ON
OFF	A B	C D

LEGEND

Field Wiring

NOTE: Underlined letter indicates active thermostat output when configured for A/C operation.

Fig. 8A — Low-Voltage Connections With or Without Economizer or Two-Position Damper

DEFROST BOARD — The defrost board timer cycle is set to 30 minutes. To change the cycle time, turn off power to the unit and install lockout tag. Remove the wire from defrost board connected to the 30 minute quick-connect. See Fig. 10. Connect the wire to the 50 or 90 minute quick-connects on the defrost board, depending on the desired defrost time.

HEAT ANTICIPATOR SETTINGS — For units with electric heat, set heat anticipator settings as shown in Table 4.

Step 6 — Adjust Factory-Installed Options

DISCONNECT SWITCH — The optional disconnect switch is non-fused. The switch can be locked in place for safety purposes.

	CONTROL	THERMOSTAT CONTROL
CONNECTION		CONNECTION
	BOARD		BOARD
R	24 VAC	R	R
G	RMTOCC	Y1	Y1
	CMPSAFE	Y2	Y2
Y2	FSD	W1	W1
W1	SFS	W2	W2
	NOT USED	G	G
C	C	C	C
X	X	X

Fig. 8B — Low Voltage Connections

(Units with PremierLink™ Controls)

DISCONNECT

BOARD

DISCONNECT SWITCH (OPTIONAL)

RACEWAY

COMPRESSOR

NO. 2

CONVENIENCE

OUTLET

HOLE IN

END

PANEL

COMPRESSOR NO. 1

Fig. 9 — Typical Field Control Wiring Raceway

12

Table 4 — Heat Anticipator Settings

							UNIT VOLTAGE
			208/230				460				575
	UNIT	Heater	Configuration			Heater	Configuration			Heater	Configuration
				2-Stage				2-Stage				2-Stage
		kW*	1-Stage			kW*	1-Stage			kW*	1-Stage
				Stage 1	Stage 2			Stage 1	Stage 2			Stage 1	Stage 2
		10.4, 16.0	0.3	NA	NA	13.9, 16.5	0.3	NA	NA	17.0, 34.0	0.3	NA	NA
	50TFQ	24.8, 32.0	0.6	0.3	0.3	27.8, 33.0
		42.4, 50.0	0.9	0.6	0.3	41.7, 50.0	0.6	0.3	0.3	51.0	0.6	0.3	0.3

*kW is based on 240, 480, or 575 v.

CONVENIENCE OUTLET — An optional convenience outlet provides power for rooftop use. For maintenance personnel safety, the convenience outlet power is off when the unit disconnect is off. Adjacent unit outlets may be used for service tools. An optional “Hot Outlet” is available from the factory as a special order item.

NOVAR CONTROLS — Optional Novar controls (ETM 3051) are available for replacement or new construction jobs.

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

Assembly:

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

2.Remove the filter access panel by raising the panel and swinging it outward. The panel is now disengaged from the track and can be removed. No tools are required to remove the filter access panel. Remove the outdoor-air opening panel. Save the panels and screws. See Fig. 11.

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

4.Replace the outdoor air opening panel.

5.Place the hood on the front of the outdoor air opening panel. See Fig. 12 for hood details. Secure the top of the hood with the 6 screws removed in Step 3. See Fig. 13.

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

7.Align the screw holes on the hood with the screw holes on the side of the manual outdoor-air damper. See Fig. 12 and 13. Secure the hood with the 8 screws from Step 6.

8.Adjust the minimum position setting of the damper blade by adjusting the manual outdoor-air adjustment screws on the front of the damper blade. See Fig. 11. Slide the blade vertically until it is in the appropriate position determined by Fig. 14. Tighten the screws.

9.Remove and save the screws currently on the sides of hood. Insert the screen. Secure the screen to the hood using the screws. See Fig. 13.

10.Replace the filter access panel. Ensure that the filter access panel slides along the tracks and is securely engaged.

Fig. 10 — Defrost Board

FILTER

ACCESS

PANEL

OUTDOOR AIR

OPENING

PANEL

SCREWS (SIDE)

MANUAL OUTDOOR-AIR ADJUSTMENT

SCREWS DAMPER BLADE

Fig. 11 — Damper Panel with Manual

Outdoor-Air Damper Installed

13

Fig. 12 — Outdoor-Air Hood Details

SCREW HOLES (TOP)

HOOD

HOOD SCREEN LOCATION (SCREEN NOT SHOWN)

Fig. 13 — Optional Manual Outdoor-Air

Damper with Hood Attached

Fig. 14 — Outdoor Air Damper Position Setting

PREMIERLINK™ CONTROL — The PremierLink controller is compatible with Carrier Comfort Network® (CCN) devices. This control is designed to allow users the access and ability to change factory-defined settings, thus expanding the function of the standard unit control board. Carrier’s diagnostic standard tier display tools such as Navigator™ module or Scrolling Marquee can be used with the PremierLink controller.

The PremierLink controller (see Fig. 15A and 15B) requires a Carrier electronic thermostat or a CCN connection for time broadcast to initiate its internal timeclock. This is necessary for broadcast of time of day functions (occupied/unoccupied). Refer to Fig. 16. The PremierLink control may be mounted in the control panel or an area below the control panel.

NOTE: PremierLink versions 1.3 and later are shipped in Sensor mode. If used with a thermostat, the PremierLink control must be configured to Thermostat mode.

The PremierLink control includes a supply-air temperature sensor (SAT) and an outdoor-air temperature sensor (OAT) as standard. An indoor-air quality (CO2) sensor can be added as an option. Refer to Table 5 for sensor usage.

Install the Supply Air Temperature (SAT) Sensor — When the unit is supplied with a factory-mounted PremierLink control, the supply-air temperature (SAT) sensor (33ZCSENSAT) is factory-supplied and wired. The wiring is routed from the PremierLink control over the control box, through a grommet, into the fan section, down along the back side of the fan, and along the fan deck over to the supply-air opening.

The SAT probe is wire-tied to the supply-air opening (on the horizontal opening end) in its shipping position. Remove the sensor for installation. Re-position the sensor for installation. Re-position the sensor in the flange of the supply-air opening or in the supply air duct (as required by local codes). Drill or punch a 1/2-in. hole in the flange or duct. Use two fieldsupplied, self-drilling screws to secure the sensor probe in a horizontal orientation.

NOTE: The sensor must be mounted in the discharge airstream downstream of the cooling coil and any heating devices. Be sure that the probe tip does not come in contact with any of the unit or heat surfaces.

Outdoor Air Temperature (OAT) Sensor — When the unit is supplied with a factory-mounted PremierLink control, the outdoor-air temperature (OAT) sensor is factory-supplied and wired.

Install the Indoor Air Quality (CO2) Sensor — Mount the optional indoor air quality (CO2) sensor according to manufacturer specifications.

A separate field-supplied transformer must be used to power the CO2 sensor.

Wire the CO2 sensor to the COM and IAQI terminals of J5 on the PremierLink controller. Refer to the PremierLink Installation, Start-up, and Configuration Instructions for detailed wiring and configuration information.

14

Table 5 — PremierLink™ Sensor Usage

	APPLICATION	OUTDOOR AIR	RETURN AIR	OUTDOOR AIR	RETURN AIR
		TEMPERATURE SENSOR	TEMPERATURE SENSOR	ENTHALPY SENSOR	ENTHALPY SENSOR
	Dry Bulb
	Temperature with
	PremierLink™*	Included —	—	—	—
	(PremierLink	HH79NZ017
	requires 4-20 mA
	Actuator)
	Differential Dry Bulb
	Temperature with		Required —
	PremierLink*	Included —
			33ZCT55SPT	—	—
	(PremierLink	HH79NZ017
			or Equivalent
	requires 4-20 mA
	Actuator)
	Single Enthalpy with
	PremierLink*	Included —		Required —
	(PremierLink		—		—
		Not Used		HH57AC077
	requires 4-20 mA
	Actuator)
	Differential Enthalpy
	with PremierLink*	Included —		Required —	Required —
	(PremierLink		—
		Not Used		HH57AC077	HH57AC078
	requires 4-20 mA
	Actuator)

*PremierLink control requires Supply Air Temperature sensor 33ZCSENSAT and

Outdoor Air Temperature Sensor HH79NZ017 — Included with factory-installed PremierLink control; field-supplied and field-installed with field-installed PremierLink control.

NOTES:

1.CO2 Sensors (Optional):

33ZCSENCO2 — Room sensor (adjustable). Aspirator box is required for duct mounting of the sensor.

33ZCASPCO2 — Aspirator box used for duct-mounted CO2 room sensor. 33ZCT55CO2 — Space temperature and CO2 room sensor with override. 33ZCT56CO2 — Space temperature and CO2 room sensor with override and set point.

2.All units include the following Standard Sensors:

Outdoor-Air Sensor — 50HJ540569 — Opens at 67 F, closes at 52 F, not adjustable.

Mixed-Air Sensor — HH97AZ001 — (PremierLink control requires Supply Air Temperature sensor 33ZCSENSAT and Outdoor Air Temperature Sensor HH79NZ017)

Compressor Lockout Sensor — 50HJ540570 — Opens at 35 F, closes at 50 F.

Fig. 15A — PremierLink Controller

15

PREMIERLINK

CONTROL

HINGED

DOOR

PANEL

PREMIERLINK

COVER

Fig. 15B — PremierLink™ Controller (Installed)

BLK

VIO

RED

HK50AA039

TB - 2

PNK

7

7

PNK

SAT

BLU

ANAL

J6

BLK

1

BLU

BRN

OG

PremierLink

VIO

VIO

ORN

6

6

2

PNK

OAT

BRN

BRN

0

11

11

Space Temp./ Set

3

RED

-

BLK

mA20

J5

Point Adjustment

BRN

10

10

4

BRN

BLU

IN

YEL

GRN

8

8

5

RED

BLU

YEL

3

3

Indoor Air

WHT

DISCRETE

J4

2

2

6

BLU

Quality Sensor

BRN

BLK

4

4

Outdoor Air

7

BLU

PNK

J9

J7

GRA

J2

Quality Sensor

8

ORN

J1

0-20 mA

PP/MP

RED

1

1

Power Exhaust/Energy Recycler

GRA

PWR COMMS

BLU

5

5

GRA

TB - 3

PNK

BRN

WHT GRA

YEL

ORN

9

9

RMTOCC

1

GRN

GRA

BLK

RED

TB - 1

WHT

12

12

PNK

2

YEL

1

R

CMPSAFE

RED

TR

TR1

FSD

3

BLU

2

Y1

GRA

3

SFS

4

WHT

Y2

+

ORN

SR

5

2

3

PNK

4

W1

ORN

6

GRAY

RED

5

W2

PNK

OUTDOOR AIR

GRAY

7

6

ENTHALPY SENSOR

CCN

WHT

G

Comm.

WHT

BLK

8

BLK

7

C

Economi$er2

RED

BRN

4 - 20mA

			LEGEND	8	X
	+
S		COMMS — Communications
				RTU Terminal
RETURN AIR		OAT	— Outdoor Air Temperature Sensor		Board
ENTHALPY		PWR	— Power
SENSOR
RED		SAT	— Supply Air Temperature Sensor
BRN

Fig. 16 — Typical PremierLink Controls Wiring

16

J8

Relays

ORN ORN PNK

ORN

RED

Enthalpy Sensors and Control — The enthalpy control (HH57AC077) is supplied as a field-installed accessory to be used with the economizer damper control option. The outdoor air enthalpy sensor is part of the enthalpy control. The separate field-installed accessory return air enthalpy sensor (HH57AC078) is required for differential enthalpy control.

NOTE: The enthalpy control must be set to the “D” setting for differential enthalpy control to work properly.

The enthalpy control receives the indoor and return enthalpy from the outdoor and return air enthalpy sensors and provides a dry contact switch input to the PremierLink™ controller. Locate the controller in place of an existing economizer controller or near the actuator. The mounting plate may not be needed if existing bracket is used.

A closed contact indicates that outside air is preferred to the return air. An open contact indicates that the economizer should remain at minimum position.

Outdoor Air Enthalpy Sensor/Enthalpy Controller (HH57AC077) — To wire the outdoor air enthalpy sensor, perform the following (see Fig. 17 and 18):

NOTE: The outdoor air sensor can be removed from the back of the enthalpy controller and mounted remotely.

1.Use a 4-conductor, 18 or 20 AWG cable to connect the enthalpy control to the PremierLink controller and power transformer.

2.Connect the following 4 wires from the wire harness located in rooftop unit to the enthalpy controller:

a.Connect the BRN wire to the 24 vac terminal (TR1) on enthalpy control and to pin 1 on 12-pin harness.

b.Connect the RED wire to the 24 vac GND terminal (TR) on enthalpy sensor and to pin 4 on 12-pin harness.

c.Connect the GRAY/ORN wire to J4-2 on PremierLink controller and to terminal (3) on enthalpy sensor.

d.Connect the GRAY/RED wire to J4-1 on PremierLink controller and to terminal (2) on enthalpy sensor.

NOTE: If installing in a Carrier rooftop, use the two gray wires provided from the control section to the economizer to connect PremierLink controller to terminals 2 and 3 on enthalpy sensor.

If NOT using Carrier equipment, wires may need to be field supplied and installed.

Return Air Enthalpy Sensor — Mount the return-air enthalpy sensor (HH57AC078) in the return-air duct. The return air sensor is wired to the enthalpy controller (HH57AC077). The outdoor enthalpy changeover set point is set at the controller.

To wire the return air enthalpy sensor, perform the following (see Fig. 17):

1.Use a 2-conductor, 18 or 20 AWG, twisted pair cable to connect the return air enthalpy sensor to the enthalpy controller.

2.At the enthalpy control remove the factory-installed resistor from the (SR) and (+) terminals.

3.Connect the field-supplied RED wire to (+) spade connector on the return air enthalpy sensor and the (SR+) terminal on the enthalpy controller. Connect the BLK wire to (S) spade connector on the return air enthalpy sensor and the (SR) terminal on the enthalpy controller.

ENTHALPY CONTROLLER				RED						S (OUTDOOR
										+	AIR
				BRN
A B C	TR	TR1				BLK					ENTHALPY
											SENSOR)
D	SO	+				RED
	SR	+								S (RETURN AIR
										+	ENTHALPY
	2	3									SENSOR)
		1			GRAY/ORN
LED									WIRE HARNESS
					GRAY/RED				IN UNIT

NOTES:

1.Remove factory-installed jumper across SR and + before connecting wires from return air sensor.

2.Switches shown in high outdoor air enthalpy state. Terminals 2 and 3 close on low outdoor air enthalpy relative to indoor air enthalpy.

3.Remove sensor mounted on back of control and locate in outdoor airstream.

Fig. 17 — Outdoor and Return Air Sensor Wiring Connections for Differential Enthalpy Control

HH57AC077

ENTHALPY

CONTROL AND

BRACKET OUTDOOR AIR

ENTHALPY

SENSOR

HH57AC078 ENTHALPY
SENSOR (USED WITH
ENTHALPY CONTROL	C7400A1004
FOR DIFFERENTIAL
ENTHALPY OPERATION)	+

MOUNTING PLATE

Fig. 18 — Differential Enthalpy Control, Sensor and Mounting Plate (33AMKITENT006)

17