Carrier WEATHERMASTER 50HJQ004-016 Product Data page 158

Guide specifications — 50HJQ014,016 (cont)
d. Single point kits available for each heater
when required.
*10. Electronic Programmable Thermostat:
Unit shall be capable of using deluxe full-fea-
tured electronic thermostat. Thermostat shall
use built-in compressor cycle delay control for
both heating and cooling duty. Thermostat shall
be capable of working with Carrier direct digital
controls.
*11. Thermostat and Subbase:
Thermostat and subbase shall provide staged
cooling and heating automatic (or manual)
changeover, fan control, and indicator light.
12. Unit-Mounted, Non-Fused Disconnect Switch:
Switch shall be factory-installed, internally
mounted. NEC and UL approved non-fused
switch shall provide unit power shutoff. Switch
shall be accessible from outside the unit and
shall provide power off lockout capability.
13. Convenience Outlet:
Outlet shall be factory-installed and internally
mounted with easily accessible 115-v female
receptacle. Outlet shall include 15 amp GFI
receptacle with independent fuse protection.
Voltage required to operate convenience outlet
shall be provided by a factory-installed step-
down transformer. Outlet shall be accessible
from outside the unit.
14. Compressor Cycle Delay:
Unit shall be prevented from restarting for min-
imum of 5 min. after shutdown.
15. Fan/Filter Status Switch:
Switch shall provide status of indoor (evapora-
tor) fan (ON/OFF) or filter (CLEAN/DIRTY).
Status shall be displayed over communication
bus when used with direct digital controls or
with an indicator light at the thermostat.
16. Power Exhaust:
Package shall include an exhaust (propeller
1
style) fan, /
wired for 460 v) direct drive motor, and damper
for vertical flow units with economizer to con-
trol over-pressurization of building. Power
Exhaust package must be field-installed in
return-air ductwork when used with optional
side return connections.
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17. Outdoor Air Enthalpy Sensor (EconoMi$er IV
or EconoMi$er2):
The outdoor air enthalpy sensor shall be used
with the EconoMi$er IV or EconoMi$er2
device to provide single enthalpy control. When
used in conjunction with a return air enthalpy
sensor, the controller will provide differential
enthalpy control. The sensor allows the control-
ler to determine if outside air is suitable for free
cooling.
158
Hp 208-230, 460 v (factory-
2
→
18. Return Air Enthalpy Sensor (EconoMi$er IV or
EconoMi$er2):
The return air enthalpy sensor shall be used
with the EconoMi$er IV or EconoMi$er2
device. When used in conjunction with an out-
door air enthalpy sensor, the EconoMi$er IV or
EconoMi$er2 device will provide differential
enthalpy control.
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19. Return Air Temperature Sensor (EconoMi$er
IV or EconoMi$er2):
The return air temperature sensor shall be used
with the EconoMi$er IV or EconoMi$er2
device. When used in conjunction with the stan-
dard outdoor air temperature sensor, the
EconoMi$er IV or EconoMi$er2 device will pro-
vide differential temperature control.
20. Indoor
(EconoMi$er2):
a. Shall have the ability to provide demand ven-
tilation indoor air quality (IAQ) control
through the economizer with an IAQ sensor.
b. The IAQ sensor shall be available in duct
mount, wall mount, and wall mount with
LED display. The set point shall have adjust-
ment capability.
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21. Indoor Air
(EconoMi$er IV):
Sensor shall have the ability to provide demand
ventilation control through the EconoMi$er IV.
The IAQ sensor shall be wall mounted with an
LED display in parts per million. The set point
shall have adjustment capability.
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22. Return Air CO
Sensor shall have the ability to provide demand
ventilation control through the EconoMi$er IV.
The IAQ sensor shall be duct mounted. The set
point shall have adjustment capability.
23. Ultra-Violet Germicidal Lamps:
Ultra-violet germicidal lamps are designed to
eliminate odor causing mold and fungus that
may develop in the wet area of the indoor
section of the unit. The high output, low
temperature germicidal lamps are field installed
in the indoor section of the unit, aimed at the
indoor coil and condensate pan. The short
wavelength ultra-violet light inhibits and kills
mold, fungus and microbial growth. The lamps
have an output rating at 45 F in 400 fpm
airflow of 120 microwatts/cm
24. Hinged Panel Option:
Hinged panel option provide hinged access
panels for the filter, compressor, indoor fan,
and control box areas. Filter hinged panels
permit tool-less entry for changing filters. Each
hinged panel is permanently attached to the
rooftop unit.
905
Air Quality (CO )
2
Quality (CO ) Room
2
Sensor (EconoMi$er IV):
2
2 at 1 meter.
Sensor
Sensor