Carrier 50JZ Product Data page 28

Guide specifications (cont)
2. All fan motors shall have permanently lubricated
bearings, and inherent, automatic reset, thermal
overload protection.
3. Outdoor fan motor shall be totally enclosed.
L. Grille
1. Louvered Grille:
Louvered grille shall be standard on all units.
M. Special Features Available
1. Coil Options:
Shall include factory-installed optional copper/
copper and vinyl-coated refrigerant coils.
2. Economizer:
a. Economizer controls capable of providing free
cooling using outside air.
b. Equipped with low leakage dampers not to ex-
ceed 3% leakage, at 1.0 in. wg pressure differen-
tial.
c. Spring return motor shuts off outdoor damper on
power failure.
3. Flat Roof Curb:
Curbs shall have seal strip and a wood nailer for
flashing and shall be installed per manufacturer's
instructions.
4. Manual Outdoor Air Damper:
Package shall consist of damper, birdscreen, and
rainhood which can be preset to admit outdoor air
for year-round ventilation.
5. Thermostat:
To provide for one-stage heating and cooling in ad-
dition manual or automatic changeover and indoor
fan control.
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Carrier Corporation Indianapolis, IN 46231
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1 4
Tab 5b 5a
7/00
Page 28 Catalog No. 525-087
6. Low Ambient Package:
Shall consist of a solid-state control and condenser
coil temperature sensor for controlling condenser-
fan motor operation, which shall allow unit to oper-
ate down to 0° F outdoor ambient temperature in
cooling.
7. Filter Rack Kit:
Shall provide filter mounting for downflow applica-
tions.
8. Square-To-Round Duct Transitions:
Shall have the ability to convert the supply and re-
turn openings from rectangular to round. (024-048
only)
9. Compressor Protection:
Solid-state control shall protect compressor by pre-
venting "short cycling."
10. Crankcase Heater:
Shall provide anti-floodback protection for low-
load cooling applications. (Standard on 042-060
sizes)
11. Electric heaters:
a. Electric heater shall be available as a field-
installed option.
b. Heater elements shall be open wire type, ade-
quately supported and insulated with ceramic
bushings.
c. Electric heater packages must provide single
point power connection capability.
12. Compressor Hard start kit:
Shall be available to give a boost to the compressor
motor at each start-up.
Printed in U.S.A. PC 102 Form 50JZ-1PD
Replaces: NEW