Wine Guardian 99H0204-20, Installation, Operation And Maintenance Manual

Page: 28 / 42

28
optimal charging. Refer to page 29 of this manual for correct refrigerant charging
based on your interconnect length. Charge the system with the correct amount of
refrigerant and mark the amount with a ballpoint pen in the space provided on the unit
nameplate.
Note : When charging through the suction service valve the refrigerant should be
charged in vapor form. NEVER CHARGE IN LIQUID FORM. Refrigerant should always
be charged through a dryer. Charging in liquid form may damage the valve plate
assembly as well as scrub the oil out of the compressor bearings.
NON-AZEOTROPES MUST BE CHARGED IN THE LIQUID PHASE ONLY. TO AVOID
COMPRESSOR DAMAGE, LIQUID MUST ALWAYS BE CHARGED INTO THE HIGH
SIDE OR INTO AN ACCUMULATOR.
Be sure there is not an overcharge of refrigerant. An overcharge might permit liquid
refrigerant to enter the motor compressor and damage the valves, rods, pistons, etc.
Wiring the Condenser
•
Wire the system as per the supplied wiring schematics starting on page 16 of this
manual.
•
The SP fan coil unit is powered through a factory-supplied power cord, but you will
need to run 24-volt power wires from the low-voltage terminal block on the fan coil to
the terminal block in the junction box in the condensing unit labeled Y & C. This can
be typical controller wire or 18- gauge insulated wire. (See images below)
24-volt, two-position
terminal block
24 Volt
Connection
On/Off
Switch
24V Signal
High Voltage
Input