Options And Accessories; Electric Heaters; Minimum Airflow For Reliable Electric Heater Operation (Cfm) - Carrier 50SZ Series Product Data

OPTIONS AND ACCESSORIES

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
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
Economizer with solid- -state controls and barometric relief
dampers includes filter racks and provides outdoor air during cool-
ing and reduces compressor operation.
ODS CATALOG
ORDERING NO.
CPHEATER052A00
CPHEATER064A00
CPHEATER070A00
CPHEATER050A00
CPHEATER066A00
CPHEATER054A00
CPHEATER055A00
CPHEATER056A00
CPHEATER068A00
CPHEATER057A00
CPHEATER058A00
CPHEATER059A00
CPHEATER060A00
CPHEATER061A00
CPHEATER062A00
CPHEATER063A00
NOTE: Electric heaters are rated at 240v and 480v. Refer to Multiplication Factors table for other voltages.
LEGEND
ODS⎯Order Distribution System
UNIT- -50SZ 024
AIRFLOW 800
ELECTRIC HEATERS
NOMINAL
FUSES
CAPACITY (kW)
ELECTRIC HEATERS (208/230 — SINGLE PHASE — 60 Hz)
5.0 0
5.0 4
7.2 4
10.0 4
15.0 6
20.0 6
ELECTRIC HEATERS (208/230 — THREE PHASE — 60 Hz)
5.0 0
10.0 0
10.0 6
15.0 0
15.0 6
20.0 6
ELECTRIC HEATERS (460 — THREE PHASE — 60 Hz)
5.0 0
10.0 0
15.0 0
20.0 0

Minimum Airflow for Reliable Electric Heater Operation (cfm)

030
1000
Manual outside air damper includes hood and filter rack with ad-
justable 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 protec-
tion 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 me-
chanical cooling down to outdoor temperatures as low as 0_F
(- -17.7_C).
Filter rack features easy installation, serviceability, and high- -fil-
tering performance for vertical and horizontal applications.
Compressor hard start kit gives a boost to the compressor motor
at each start- -up.
USED WITH SIZES
024 030 036
X X X
X
X X X
X X
X X
X X
X
X
X
X
X
036 042
1200 1400
5
042 048 060
X X
X
X X X
X X X
X X X
X X X
X X X
X X
X
X X X
X X X
X X X
X X X
X X X
X X X
048 060
1600 2000