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GUIDE SPECIFICATIONS (CONT)
M. Special Features:
1. Coil Options:
Shall include factory--installed optional tin--plated indoor
copper/copper and vinyl-- coated refrigerant coils.
2. Flat Roof Curb:
Curbs shall haveseal strip and awood nailer for flashing and
shall be installed per manufacturer’s instructions.
3. Manual Outdoor Air Damper:
Package shall consist of damper, bird screen, and rain hood
which can be preset to admit outdoor air for year--round ven-
tilation.
4. Infinityt User Interface:
Toprovidefortwo--stageheatpump heating,two--stagecool-
ing, and electric (auxiliary) heat, in addition to manual or au-
tomatic changeover and indoor fan control.
5. Low --Ambient Cooling:
Low--ambient cooling must be enabled in the UI setup to al-
low unit to operate down to 0°F(--17_C) outdoor ambient
temperature in cooling.
6. Filter Rack Kit:
Shall provide filter mounting for downflow and horizontal
applications.
7. Square --To--Round Duct Transitions:
Shall have the ability to convert the supply and return open-
ings from rectangular to round (024--048 sizes only).
8. Crankcase Heater:
Shall provide anti--floodback protection for low--load cool-
ing applications. (Standard on 042 --060 sizes.)
9. Electric heaters:
a. Electric heater shall be available as a field--installed
option.
b. Heater elements shall be open--wire type, adequately
supported and insulated with ceramic bushings.
c. Electric heater packages must provide single--point
power connection capability .
10. Compressor Hard Start Kit:
Shall be available to give a boost to the compressor motor at
each start--up.