Guide specifications (cont) – Carrier 50XP User Manual

Page 24

GUIDE SPECIFICATIONS (CONT)

M. Special Features:

1. Coil Options:

Shall include factory--installed optional tin--plated indoor,
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 exceed 3%

leakage, at 1.0 IN. W.C. pressure differential.

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 addition
manual or automatic changeover and indoor fan control.

6. Low Ambient Package:

Shall consist of a solid--state control and condenser coil

temperature sensor for controlling condenser--fan motor op-
eration, which shall allow unit to operate down to 0_F
(--18_C) outdoor ambient temperature when properly

installed.

7. Filter Rack Kit:

Shall provide filter mounting for downflow or horizontal
applications.

8. Square--To--Round Duct Transitions (024--048):

Shall have the ability to convert the supply and return open-
ings from rectangular to round. (024--048 only)

9. Compressor Protection:

Solid--state control shall protect compressor by preventing
“short cycling.“

10. Crankcase Heater:

Shall provide anti--floodback protection for low--load cool-

ing applications.

11. Electric Heaters:

a. Electric heater shall be availabel as a field--installed

option.

b. Heater elements shall be open wire type, adequately

supported and insulated with ceramic bushings.

c. Electric heater packages must provide single point

power connection capability.

12. Compressor Start Kit (single phase units only):

Shall provide additional starting torque for single--phase

compressors.

Printed in U.S.A.

Edition Date: 09/08

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

Catalog No: 50XP---05PD

Replaces: 50XP--- 4PD

50X