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5. Head Pressure Control Package
a. Controller shall c ontrol coi l head pressure by c ondenser --fan speed modulation or condenser--fan cycling and
wind baffles.
b. Shall consist of solid--state control and c ondenser--coil tempe r ature sensor to m ainta in condensing t empera ture
betwee n 90_F(32_C) and 110_F(43_C) at out door ambient temperatures down to --20_F(--29_C).
6. Conde nse r Coil Hail Guard Assembly
a. Shall protect against damage from hail.
b. Shall be louvered design.
7. Unit--Mounted, Non--Fused Disconnect Switch:
a. Switch shall be factory--install ed, internally mounted.
b. National E lect ric Code (NEC) and UL approved non--fused switch shall provide unit power shutoff.
c. Shall be accessible from outside the unit
d. Shall provide local shutdown and lockout capability.
8. Conve nience Outlet:
a. Powered conveni ence out let.
(1.) Outlet shall be powered from main line power to the rooftop unit.
(2.) Outlet shall be powered from line side or load side of disconnect by installing contractor, as required by
code. If outlet is powered from load side of disconnect, unit electrical ratings shall be UL certified and
rated for additional outlet amperage.
(3.) Outlet shall be factory--installed and internally mounted with easily accessible 115 --v female receptacle.
(4.) Outlet shall include 15 amp GFI receptacles with independent fuse protection.
(5.) Volt age required to operate convenience outlet shall be provided by a factory--installed step--down trans-
former.
(6.) Outlet shall be accessible from outside the unit.
(7.) Outlet shall include a field--installed “Wet in Use” cover.
b. Non--Powered convenience outlet.
(1.) Outlet shall be powered from a separate 115/120v power source.
(2.) A tra nsformer shall not be incl uded.
(3.) Outlet shall be factory--installed and internally mounted with easily accessible 115 --v female receptacle.
(4.) Outlet shall include 15 amp GFI receptacles with independent fuse protection.
(5.) Outlet shall be accessible from outside the unit.
(6.) Outlet shall include a field--installed “Wet in Use” cover.
9. Thru--the--Base Connectors:
a. Kits shall provide connectors to permit electrical connections to be brought to the unit through the unit base-
pan.
b. Minimum of four connection locations per unit.
10. Fan/Filter Status Switch:
a. Switch shall provide status of indoor evaporator fan (ON/OFF) or filter (CLEAN/DIRT Y).
b. Status shall be di splayed either over communication bus (when used wit h direct digita l controls) or with an
indicator light at the thermostat.
11. Propeller Power Exhaust:
a. Power exhaust shall be used in conjunction with an integrated economi zer.
b. Inde pendent m odules for verti cal or horizontal return configurations shall be available.
c. Horizontal power exhaust i s shall be mounted in return ductwork.
d. Power exhaust shall be controlled by economizer controller operation. Exhaust fans shall be energized when
dampe rs open past the 0--100% adjustable setpoint on the economizer control.
12. Roof Curbs (Vertical):
a. Full perimeter roof curb with exhaust capability providing separate air streams for energy recovery from the
exhaust a ir without supply air contamination.
b. Formed galvanized steel with wood nailer strip a nd 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. High--Static Indoor Fan Motor(s) and Drive(s) (04--14):
a. High--static motor(s) and drive(s) shall be factory--installed to provide additional performance ra nge.
14. Condenser Coil Grille:
50TC
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