Product data

144
outdoor-air, and can be set to meet specific job
requirements.
20. Outdoor Air Enthalpy Sensor:
The outdoor air enthalpy sensor shall be used
with the EconoMi$er device to provide single
enthalpy control. When used in conjunction
with a return air enthalpy sensor, the
EconoMi$er device will provide differential
enthalpy control. The sensor allows the
EconoMi$er controller to determine if outside
air is suitable for free cooling.
21. Return Air Enthalpy Sensor:
The return air enthalpy sensor shall be used
with the EconoMi$er device. When used in con-
junction with an outdoor air enthalpy sensor,
the EconoMi$er device will provide differential
enthalpy control.
22. Return Air Temperature Sensor:
The return air temperature sensor shall be used
with the EconoMi$er device. When used in con-
junction with the standard outdoor air tempera-
ture sensor, the EconoMi$er device will provide
differential temperature control.
23. Indoor Air Quality (CO
2
) Sensor:
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.
24. 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 evaporator
section of the unit. The high output, low tem-
perature germicidal lamps are field installed in
the evaporator section of the unit, aimed at the
evaporator 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 air-
flow of 120 microwatts/cm
2
at 1 meter.
25. Hinged Panel Option:
Hinged panel option provide hinged access
panels for the filter, compressor, evaporator
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.
26. Emergency Heat Control Package:
When mechanical heating is locked out, auxil-
iary heat shall be activated when necessary.
27. Glycol Coil:
Coil shall be 2-row copper tube (1/2-in. OD)
with aluminum plate fins (15 fins/in.) and
1.625 in. OD copper headers. Input and output
connections shall be 1.625 in. ODM copper
stubs for sweat connection. Coil shall be fur-
nished with suitable support rails, end plates,
and hardware for ready field installation in the
heater compartment.
28. Winter Start Time Delay:
Used in conjunction with the accessory low
ambient kit or head pressure control device, the
kit permits operation in cooling at lower out-
door temperatures. See price pages for more
information.
29. Alternate Drive:
Alternate drive shall provide higher static drive
capability to enhance indoor fan performance
rpm range.
30. Stainless Steel Condensate Pan:
Stainless steel condensate pans shall be avail-
able for condensate collection.
Guide specifications — 50HJQ014,016 (cont)
50TFQ004-01250HJQ014,016