2
2. Remove and save the control box cover.
3. Remove and save the screws holding the control box
in place. Carefully swing the control box about 90°
counterclockwise.
4. Remove and discard the cap from the discharge line
access fitting.
5. Place a teflon seal in the fitting of the low ambient
control.
6. Install the low ambient control on the discharge line
access fitting. Tighten to 115 to 120 inch-pounds to
avoid refrigerant leaks. Use a backup wrench to
prevent damage to the fitting.
7. Before running the unit, perform a preliminary leak
check on the low ambient control. If a leak is found
tighten the connection slightly and retest.
8. Route the blue wires from the low ambient control
into the unit control box. To avoid equipment dam-
age, route the wires so they avoid the fan.
9. Carefully swing the control box clockwise to its
original position. Reattach it, using the screws
removed earlier.
Units Without A Discharge Tube Port
1. On RCB**B2A units, remove the screws holding the
service valve panel, control box cover, and control
box.
2. Swing out the control box, lift the service valve panel
up and out.
3. Remove and save the cap from the liquid line valve
schrader fitting. NOTE: It is not necessary to
remove the schrader core for a low ambient kit.
4. Prepare a connector tee in the kit by removing the
schrader core in the tee leg only. Connect the
extension tube in the kit to the tee connector where
the schrader core was removed. See Figure1 for the
tube and tee orientation. Do not connect the tee to
the liquid service valve until after the next step.
5. Place a teflon seal in the pressure switch fitting.
Install the pressure switch to the end of the extension
tube.
6. Locate the extension tube through the slot under the
liquid tube in the valve panel.
7. Tighten the swivel nut on the tee on to the liquid valve
schrader port.
CAUTION
Refrigerant pressure is present during
connection. Take all necessary safety
precautions when installing this kit.
8. Attach the schrader cap on the end of the tee.
9. Insert the blue switch wires through the bushing in
the back of the control box.
Description
This kit is for use with any Amana RCC, RCB, RCE, or
three-phase RCA/RCB and RCC remote cooling unit
which is installed with an indoor coil that includes a
thermal expansion valve. The Low Ambient Control kit
stops the outdoor fan on your unit when the high-side
pressure becomes too low. When the high-side pressure
rises, the outdoor fan will restart. This kit can only be
used with 208-230 volt units. Currently, remote cooling
units are only suitable for operation at outdoor tempera-
tures of 50°F and above. The Low Ambient Control kit
allows these units to operate at outdoor ambients as
low as 35°F.
IMPORTANT NOTE: If cooling operation at outdoor
ambients below 35°F, do not use this kit. Contact your
Amana distributor or branch office for assistance.
IMPORTANT NOTE: Do not install this kit in a system
with an indoor coil and no thermal expansion valve.
Compressor damage could occur which would result in
voiding of your warranty.
Bill of Material
(1) Refrigerant Tee,With Two Valve Cores
(1) Low Ambient Cutout Control
(1) Wire Nut
(1) Low Ambient Label
(1) Installation Instructions
(2) Teflon Seals
(1) Extension Tube
This kit should only be installed by a qualified, experi-
enced technician.
Installation
WARNING
To avoid the risk of electrical shock,
injury, or death, disconnect the electrical
power before installing this kit.
WARNING
To avoid possible injury from refrigerant,
wear gloves and goggles while installing
this kit.
See the outdoor unit Installation Instructions for other
“Safe Refrigerant Handling” guidelines.
Units Without A High Pressure Control
1. Remove and save the screws holding the control box
cover in place.
(4 pages)
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