Carrier 50TFF007-014 Product Data page 44

Guide specifications (cont)
controlling economizer cut-in point to have
minimum heat content air passing over the
evaporator coil for most efficient system
operation.
* 8. Differential Enthalpy Sensor:
a. For use with economizer only.
b. Capable of comparing enthalpy content
(temperature and humidity) of outdoor and
indoor air and controlling economizer cut-
in point at the most economical level.
* 9. Electric Resistance Heaters:
a. Open wire nichrome elements with all nec-
essary safety operating controls.
b. UL (U.S.A. Standard) listed and indicated
on basic unit informative plate.
c. Available in multiples to match heating
requirements.
*10. Low-Ambient Operation (Head Pressure
Control) Package:
Consists of solid-state control and condenser-
coil temperature sensor to operate at outdoor
ambient temperatures down to –17.8 C (0° F)
by condenser-fan cycling.
*11. Thermostat and Subbase:
Provides staged cooling and heating auto-
matic (or manual) changeover, fan control,
and indicator light.
12. Thru-The-Bottom Service Connectors:
Kit shall provide connectors to permit electri-
cal connections to be brought to the unit
through the basepan.
*13. Electronic Programmable Thermostat:
Capable of using deluxe full-featured elec-
tronic thermostat. Shall use built-in compres-
sor cycle delay control for both heating and
cooling duty. Capable of working with
Carrier direct digital controls.
14. Condenser Coil Hail Guard Assembly:
Hail guard shall protect against damage from
hail and flying debris.
15. Condenser Coil Grille:
The grille protects the condenser coil from
damage by large objects without increasing
unit clearances.
16. Compressor Cycle Delay:
Unit shall be prevented from restarting for a
minimum of 5 minutes after shutdown.
17. Salt Spray Protection Package (008-014):
Coil guard protects coil from corrosion in
coastal areas and in areas with high sulfur
emissions.
18. Fan/Filter Status Switch:
Provides status of indoor fan (ON/OFF) or
filter (CLEAN/DIRTY). Status shall be dis-
played over communication bus when used
Carrier Corporation • Syracuse, New York 13221
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1 4 New Book 1
Tab 1b 6b Tab OP2b
204
Page 44 Catalog No. 005-003
with direct digital controls or with an indica-
tor light at the thermostat.
19. Unit-Mounted Disconnect Switch:
Shall be factory-installed. Internally mounted,
non-fused switch provides unit power shutoff.
Shall be accessible from outside the unit.
20. Logo Kit:
Shall provide logo for field installation onto
outdoor coil grille.
21. EconoMi$er and Power Exhaust:
Package shall provide control of internal
building pressure. The system shall exhaust
up to 100% of return air.
22. Power Exhaust for Accessory EconoMi$er:
Power exhaust shall be used in conjunction
with EconoMi$er to provide the system with
the capability to exhaust up to 100% of
return air. The power exhaust is field-
installed accessory.
23. Outdoor-Air Enthalpy Sensor:
The outdoor-air enthlapy sensor shall be
used with the EconoMi$er device to provide
single enthalpy control. When used in con-
junction with a return air enthalpy sensor,
the EconoMi$er device will provide different
enthalpy control. The sensor allows the
EconoMi$er controller to determine if out-
side air is suitable for free cooling.
24. Return-Air Enthalpy Sensor:
The return-air enthalpy sensor shall be used
with the EconoMi$er device. When used in
conjunction with an outdoor air enthalpy
sensor, the EconoMi$er device will provide
differential enthalpy control.
25. Return-Air Temperature Sensor:
The return-air temperature sensor shall be
used with the EconoMi$er device. When
used in conjunction with the standard
outdoor air temperature
EconoMi$er device will provide differential
temperature control.
26. Indoor-Air Quality (CO
a. Shall have the ability to provide demand
ventilation indoor-air quality (IAQ) con-
trol through the economizer with an IAQ
sensor.
b. The IAQ sensor shall be available in duct
mount, wall mount, and wall mount with
LED display. The set point shall have
adjustment capability.
9-00
Printed in U.S.A.
sensor, the
) Sensor:
2
Form 50TFF-C1PD
Replaces: New