38
WARNING:
Turn off electric power
at the fuse box or service panel before making any
electrical connections while installing accessories.
Failure to do so can result in electrical shock,
severe personal injury, or death.
8.1 Liquid Line
Solenoid Valve (24V)
Recommended for all split system applications
without a non-bleed TXV on the indoor coil, to
prevent refrigerant migration during off cycles.
Solenoid valve is to be located in liquid line near air
handler
.
Part No.
RXAV-CD120 (10-12.5 ton)
RXAV-CD180 (15-20 ton)
8.2 Sight Glass
SIGHT GLASS — Allows viewing of the refrigerant.
Bubbles may indicate a shortage of refrigerant or a
restriction in the liquid line. The color indicator shows
relative moisture saturation of the refrigerant. Its
inclusion in the refrigerant piping is recommended.
A minimum of 12 hours after installation is required
before attempting to determine if a moisture
condition within the system exists.
Part No.
RXAG-A048 (10-12.5 ton)
RXAG-A020 (15-20 ton)
8.3 Low Ambient
Control (Lac) (RXAD-08)
Cycles outdoor fans to maintain adequate dis-
charge pressure. Opens at 250 psig and closes at
450 psig.
8.0 ACCESSORIES
7.8 Line Voltage Termi-
nal Block for Field Con-
nections
12.5 – 20 ton models have a terminal block inside
the control box for connecting line voltage supply
wiring. Line voltage supply wiring is connected to
the compressor contactor lugs on 10 ton models.
7.9 Transformer
A 75VA (10-15 ton) or 100VA (20 ton) transformer
is provided inside the unit control box for
supplying 24VAC for both the outdoor and
indoor unit control system. 208V applications
require the transformer to be reconfigured upon
installation (See Section 4.11).
7.0 COMPONENTS & CONTROLS
Components
Accessories
Summary of Contents for ACL2120CAZ
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