Carrier 50AH024-096 specifications 060 072 096 Operating Weight lb Base Unit 960

Table 1 — Physical Data (cont)

UNIT 50AH	060		072	096
OPERATING WEIGHT (lb)
Base Unit	960		1214	1283
Evaporator/Condenser Sections	421/519		554/634	556/701
SHIPPING WEIGHT (lb)*	1093		1647	1716
REFRIGERANT TYPE			R-410A
Operating Charge (lb-oz)†	8-8		6-6	6-6
COMPRESSOR — TYPE			Scroll
Quantity...Model	1...ZPKP51K5E		2...ZP31K5E	2...ZP38K5E
Oil (oz)	42		25	42
HPS Setting (psig)
Cutout		650 ± 7
Reset			Manual Reset
LPS Setting (psig)
Cutout		75 ± 7
Reset		100 ± 7
CONDENSATE DRAIN CONNECTION
Size (in.)...Type			7/8...OD
CONDENSER COIL		Copper Tubes — Aluminum Fins
Size (L x H) (in.)	90 x 30		40 x 30 (2 coils)	40 x 30 (2 coils)
Number of Rows...Fins/in.	2...12		2...20	2...20
CONDENSER FAN			Centrifugal — Belt Drive
Nominal Cfm	3000		5200	6400
Blower Size (in.)	15 x 15		18 x 18	18 x 18
Motor Hp (Rpm)
Standard Motor	0.33 (1725)		1.00 (1725)	1.50 (1725)
Upgrade 1 Motor	0.50 (1725)		1.50 (1725)	2.00 (1725)
Upgrade 2 Motor	0.75 (1725)		—	3.00 (1725)
EVAPORATOR COIL		Copper Tubes — Aluminum Fins
Size (L x H) (in.)	32 x 26		46 x 28	46 x 28
Number of Rows...Fins/in.	3...14		3...14	3...14
EVAPORATOR AIR FAN			Centrifugal — Belt Drive
Nominal Cfm	2000		2400	3200
Blower Size (in.)	12 x 9		15 x 15	15 x 15
Motor Hp (Rpm)
Standard Motor	0.33 (1725)		0.50 (1725)	0.75 (1725)
Upgrade 1 Motor	0.50 (1725)		0.75 (1725)	1.00 (1725)
Upgrade 2 Motor	0.75 (1725)		1.00 (1725)	1.50 (1725)
Upgrade 3 Motor	1.00 (1725)		1.50 (1725)	2.00 (1725)
INDOOR-AIR FILTERS		Factory-Supplied Disposable Type
Number...Size (in.)	2...18 x 24 x 1		2...20 x 25 x 1	2...20 x 25 x 1
INTERCONNECTING TUBING SIZE
Suction (Qty...in.)	1...7/8		1...5/8	1...7/8
Liquid (Qty...in.)	1...3/8		1...3/8	1...7/8

LEGEND

HPS — High-Pressure Switch

LPS — Low-Pressure Switch

*Shipping weights include base unit plus packaging.

†If components are to be split, additional refrigerant will be needed.

NOTE: If components are to be split, the maximum length of refrigerant tubing to be used is 50 equivalent ft, assuming components will be installed in same horizontal plane. If components are not to be installed in same horizontal plane, contact your Carrier representative for more information. For additional piping information, refer to Carrier System Design Manual, Part 3.

Step 4 — Rig and Place Unit — Move and store unit in horizontal position. Provide space around unit for service, filter access, ductwork, and overhead clearance as indicated in Fig. 2-5.

Using suitable hydraulic lift source, raise unit up to meet bottom of the 8 threaded rods suspended from ceiling (12 rods for units with air-side economizer). Center unit so that the 8 or 12 threaded rods can be easily inserted into the factory-drilled holes at each end. Refer to Fig. 6 for rigging details.

Apply washers and locknuts on ends of each of the 8 or 12 rods.

Tighten locknuts sufficiently so that unit weight is support- ed entirely by the 8 or 12 rods. Level unit within the space by adjusting locknuts.

IMPORTANT: Unit must be level to operate properly.

NOTE: For split systems, 8 (or 12) suspension rods are required (4 for each section and 4 for economizer if required). Refer to Splitting Systems section below.

Step 5 — Make Condensate Piping Connec- tions — One 7/8-in. OD pipe thread condensate drain con- nection is provided for the evaporator section.

Step 6 — Install Ductwork — Use flexible ductwork to attach duct to unit and to help control transmission of vibra- tions to building structures. Attach ductwork to the return and supply ends of both coils.

If unit is located with condenser close to outside of building, install a field-supplied rainhood. Hood intake dimensions should be same as condenser return-air dimensions. In addi- tion, install a triple-layer bird screen over rainhood intake to eliminate possibility of insects, birds, water, or debris from entering unit. Ensure hood and/or louvers are installed correct- ly to avoid condenser air recirculation.

Step 7 — Split Systems (Factory Option, if Required) — The Roomtop® 50AH units may be split into 2 sections, if desired, with condensing section mounted remotely horizontally. The unit must be ordered with the “Splittable” cabinet type as shown in the unit model number nomenclature. See Fig. 1. All splittable units come with the interconnecting tubing kit.

Sections installed in the same horizontal plane may be sepa- rated by up to 50 equivalent ft of tubing. Use type L copper or better.

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