54
m. Outlet shall be accessible from outside the unit.
8. Thru--the--Base Connectors:
a. Kits shall provide connectors to permit gas and electrical connections to be brought to the unit through the
unit basepan.
b. Minimum of four connection locations per unit.
9. Fan/Filter Status Switch:
a. Switch shall provide status of indoor evaporator fan (ON/OFF) or filter (CLEAN/DIRTY).
b. Status shall be displayed either over communica tion bus (when used with di rect digital controls) or with an
indicator light at the thermostat.
10. Propeller Power Exhaust:
a. Power exhaust shall be used in conjunction with a n integrated e conomizer.
b. Independent modules for vertical or horizont al return configurations shall be a vailable.
c. Horizontal power exhaust is shall be mounted in return ductwork.
d. Power exhaust shall be controlled by economizer controller operation. Exhaust fans shall be energized
when dampers open past the 0--100% adjustable setpoint on the economizer control.
11. Ultraviolet Germicidal Lamps:
a. Ultraviolet germicidal lamps a re designed to e liminate odor causing mold and fungus that may develop in
the wet area of the evaporator section of the unit.
b. Shall be installed in the indoor blower section of the unit and shine on the evaporator and condensate pan.
c. Shall be specifically designed and optimized for 40_F(4_C) to 45_F(7_C), high--humidity operation in a
moving air stre am inside an HVAC unit.
d. The germicida l lamps shall have an output rating at 45_F(7_C) in 400 fpm airflow of 120 microwatts/cm2
at 1 meter.
12. Roof Curbs (Vertical):
a. Full perimeter roof curb with exhaust capability providing separate airstreams for energy recovery from the
exhaust air without supply air contamination.
b. Formed gal vanized steel with wood nailer strip and shall be capable of supporting entire unit weight .
c. Permits installation and securing of ductwork to curb prior to mounting unit on the curb.
13. Head Pressure Control Package:
a. Consists of solid--stat e control and condenser--coil temperature sensor to maintain condensing temperature
betwee n 90_F and 110_F(32_C and 43_C) at outdoor am bient temperatures down to --20_F(--29_C) by
condenser--fan speed modulation or condenser--fan cycling and wind baffles.
14. Flue Shiel d:
a. Provides added safety prot ection from the hot sides of the gas flue hood.
15. Condenser Coil Ha il Guard Assembl y:
a. Hail guard shall protect against damage from hail and flying debris.
16. Unit--Mounted, Non--Fused Disconnect Switch:
a. Shall be factory--insta lled, internally m ounted, NEC and UL approved non--fused switch shall provide unit
power shutoff.
b. Shall be accessible from outside the unit and shall provide power off lockout capability. (80 amp maxim-
um).
17. Convenience Outlet :
a. Shall be factory--installed and internally mounted with easily accessible 115--v female receptacle.
b. Shall include 15 --amp GFI receptacle with independent fuse protection.
c. Voltage required to operate convenience outlet shall be provided by a factory--installed step--down trans-
former.
d. Shall be accessible from outside the unit.
18. High--Stat ic Indoor Fan Motor(s) and Drive(s) (004--12):
a. High--static motor(s) and dri ve(s) shall be factory--installed to provide additional performance range.
19. Flue Discharge Deflector:
a. Flue di sc harge deflector directs unit exhaust ve rtically instead of horizontally.
20. Condenser Coil Grille:
a. The grille protects the condenser coil from damage by large objects without increasing unit clearances.
21. Thru--the--Bottom Utility Connectors:
558J
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