Amana AVZC18 Installation & Service Reference page 8

S 2. C H P
TEP ONNECT EAT UMP
OPEN THE LIQUID VALVE FIRST! I
,
OPENED FIRST OIL FROM THE COMPRESSOR MAY BE DRAWN INTO THE
EEV,
INDOOR COIL RESTRICTING REFRIGERANT FLOW AND AFFECTING
.
OPERATION OF THE SYSTEM
POSSIBLE REFRIGERANT LEAK!
T
O AVOID A POSSIBLE REFRIGERANT LEAK
UNTIL THE TOP OF THE STEM IS
E
NSURE VALVES ARE OPEN AND ADDITIONAL CHARGE IS ADDED PER
CHART BEFORE APPLYING POWER
When opening valves with retainers, open each valve only until
the top of the stem is 1/8" from the retainer. To avoid loss of
refrigerant, DO NOT apply pressure to the retainer. When open-
ing valves without a retainer, remove service valve cap and in-
sert a hex wrench into the valve stem and back out the stem by
turning the hex wrench counterclockwise. Open the valve until it
contacts the rolled lip of the valve body.
• For AVZC18, do not install the 24 Volt Transformer that is included with the CTK04 Thermostat in the Heat Pump
Unit; it is not needed.
• Do not attach any wires to the R & C Terminals on the Heat Pump Unit, as they are not needed for inverter unit
setup.
• Data line terminals #1 and #2 are polarity sensitive. Only the data lines, 1 and 2, are required between the indoor
and outdoor units.
• Data line terminal #1 from outdoor unit must connect to terminal #1 on indoor unit and thermostat and data line
terminal #2 from outdoor unit must connect to terminal #2 on indoor unit and thermostat. Verify wires are not
reversed.
• It is strongly recommended to use wire nuts at the indoor unit when connecting multiple data lines or low voltage
wires together. It is not recommended to use the terminal block to connect two or more wires.
• Calculate the Liquid Line Set length and weigh in 0.6 ounces per foot of R410A refrigerant for any length over 15
feet.
• Charge by Sub-cooling.
Sub-cooling should be within the range as shown on the chart.
After adjusting charge, please allow at least 20 minutes for the
system to stabilize before making further charge adjustment.
OD DS1
OD DS2
*OD DS2 switch 1 and 2 both must be turned on during normal operation mode
U S
NIT TO YSTEM
F THE GAS SERVICE VALVE IS
CAUTION
,
OPEN THE SERVICE VALVES
1/8" .
FROM THE RETAINER
CAUTION
.
ATTENTION INSTALLER - IMPORTANT NOTICE!
Please read carefully before installing this unit.
Dipswitch Default Factory Settings
Switch #
1
2
1
2
After the refrigerant charge has bled into the system, open the
liquid service valve. The service valve cap is the secondary seal
for the valves and must be properly tightened to prevent leaks.
Make sure cap is clean and apply refrigerant oil to threads and
sealing surface on inside of cap. Tighten cap finger-tight and then
tighten additional 1/6 of a turn to properly seat the sealing sur-
faces.
Do not introduce liquid refrigerant from the cylinder into the
crankcase of the compressor as this may damage the compressor.
Break vacuum by fully opening liquid and gas base valve.
NOTE: Units may utilize ball valves or front seating valves or front
seating valves. It is not necessary to force the stem tightly against
the rolled lip.
NOTE: The following table lists the equivalent length gained from
adding bends to the suction line. Properly size the suction line to
minimize capacity loss.
Type of Elbow
Fitting
90° Short Radius
90° Long Radius
45°
Or
Setting
CT Communication Enabled
ON
CT Communication Enabled
ON
Cooling Emergency Mode for Future Use*
OFF
Cooling Emergency Mode for Future Use*
OFF
8
Inside Diameter (inches)
3/4 7/8
1.7 2
1.5 1.7
0.7 0.8
2 T 11 ± 1 °F
3 T 14±1 °F
4 T 9±1 °F
5 T 12±1 °F
Purpose
1 1/8
2.3
1.6
1