Carrier 50SZ Guide User Manual download pdf (Page 5)

50SZ

Factory-installed options

Louvered grille

provides hail and vandalism protection. A

wire grille is standard on all models. See model number

nomenclature for louvered grille options.

Coil options

include copper/copper and vinyl-coated

construction for refrigerant coils. Units are shipped standard

with copper tube/aluminum ﬁn construction. See model

number nomenclature for coil options.

Field-installed accessories

Economizer with solid-state controls and barometric

relief dampers

includes ﬁlter racks and provide outdoor air

during cooling and reduce compressor operation.

Manual outside air damper

includes hood and ﬁlter rack with

adjustable damper blade for up to 25% outdoor air.

Electric heaters

provide additional heat in the unit when

required. Each package has a heater module that slides into

the controls compartment. Heater sizes range from 5.0 to

20.0 kW. The electric heater design allows the use of a

single-point power supply for the entire unit, resulting in

lower installed costs.

Flat roof curbs

in both 8 in. and 14 in. sizes are available for

roof mounted applications.

Square-to-round duct transition kit

enables 024-048 size

units to be ﬁtted to 14 in. round ductwork.

Thermostats

provide control for the system heating and

cooling functions. Thermostat models are available in both

programmable and non-programmable versions.

Controls upgrade kit

supplies high and low pressure safety

protection and protects the unit from operating in unsuitable

conditions.

Crankcase heater

provides anti-ﬂoodback protection for

low-load cooling applications.

Rigging kit

includes lifting brackets which are inserted into

the unit base rigging holds to lift unit for rooftop

applications.

Low-ambient kit (Motormaster II control)

allows the use

of mechanical cooling down to outdoor temperatures as low

as 0°F.

Filter rack

features easy installation, serviceability, and

high-ﬁltering performance for vertical and horizontal

applications.

Compressor Hard start kit

gives a boost to the compressor

motor at each start-up.

Economizer with Solid-State Controls and Barometric

Relief Dampers

Manual Air Damper (25% open)

Electric Heaters

Filter Rack

Flat Roof Curbs (8-in. and 14-in.)

Square-to-Round Duct Transition Kit

Thermostats

Controls Upgrade Kit

Crankcase Heater

Rigging Kit

Low Ambient Kit (Motormaster® II Control)

Solid-State Time Guard® II Device

Compressor Hard Start Kit

Options and accessories

ELECTRIC HEATERS

LEGEND

ODS — Order Distribution System

NOTE: Electric heaters are rated at 240 v and 480 v. Refer to Multiplication Factors table for other voltages.

ODS CATALOG

ORDERING NO.

NOMINAL CAPACITY

(kW)

USED WITH SIZES

024 030 036 042 048 060

ELECTRIC HEATERS (208/230 — SINGLE PHASE — 60 Hz)

CPHEATER052A00

5.0 X X X X

CPHEATER064A00

5.0 XX

CPHEATER070A00

7.5 XXXXXX

CPHEATER050A00

10.0 X X X X X X

CPHEATER066A00

15.0 X X X X X

CPHEATER054A00

20.0 XXX

Minimum Airflow for Reliable Electric Heater Operation

UNIT-50SZ 024 030 036 042 048 060

AIRFLOW 800 1000 1200 1400 1600 2000

1 2 3 4 5 6 ... 28

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Carrier 50SZ Guide User Manual Page 5

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