E. Compressor motor protection to automatically shutdown
the unit in the event of motor overcurrent or excessive
temperature conditions. Unit shall automatically restart
after the line break protector cools.
G.
Low ambient operation down to 25
°
F (4 C) without a low
ambient kit. (Operation down to 0
°
F with the optional low
ambient kit.)
VII. Electrical
A. Units shall be ______ volts, 3 phase, with a single power
point connection.
B. Unit control circuit shall have a 24 volt transformer, sized
sufficiently to operate the indoor fan.
C.
All condenser fan motors and the secondary of each
transformer shall be grounded.
VIII. Accessories and Options
A. Head Pressure Control
Shall include a condenser fan motor and an auto
transformer to slow the speed of the condenser fan at low
ambient temperatures, allowing operation of the
condensing unit down to 0
°
F.
B. Coil Guard
Field installed decorative grille shall be placed on the
units to provide further coil protection.
C. Phenolic Coating on Condenser Coil
Condenser coils shall be dipped in a four-coat phenolic
coating process to provide longer life in corrosive
conditions.
GUIDE SPECIFICATION (cont’d)
550.23-TG1Y
10
Unitary Products Group
