Vintage Cellars Platinum Split Fully Ducted 4000WC - Manual (Page 31)

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Water Piping Procedures
• While unit is pulling a vacuum, install all water line connections.
• If the supply water is above 80 psi, a pressure reducer must be installed before the condenser inlet so that the
water valve will work properly.
• Installations in closed loop systems should have bleed valves and sediment traps to prevent fouling the
condenser with suspended matter.
• Connect a minimum 3/8” water line capable of supplying at least 1 gpm to the 3/8 NTP water inlet connection
on the condensing unit. There must be sufficient water flow so that the outlet temperature does not exceed
95°F.
• Connect copper, Pex or similar tubing in accordance with local laws capable of handling hot water to the water
outlet connection of the condensing unit.
• Turn on the water supply and check for leaks.
Evacuation
• Install the low pressure fitting onto the access valve near the suction line service valve.
• Install a micron gauge onto the access valve near the evaporator unit (fan coil unit).
• Mid seat both service valves.
• Install service caps on the valves.
• Energize the liquid line solenoid valve.
• After confirming there is fresh oil in the vacuum pump, connect the 3/8” hose from the manifold to the pump.
• Start the pump and run until the micron gauge at the evaporator unit (fan coil unit) reads 200 microns or less.
• Disconnect the vacuum pump from the system.
• Break the vacuum by pressurizing the system to approximately 5 PSI with R-134a.
• Remove the micron gauge from the access valve.
Brazing Procedure
• Connect the bottle probe to the evaporator unit (fan coil unit).
• Fill a wine bottle ¾ full of room temperature water. Insert the bottle probe into the neck of the bottle as far as
possible. It is important that the bottle probe stopper be compressed by the neck of the bottle to ensure water
will not leak.
• Energize the evaporator unit (fan coil unit) and set the controller to call for cooling
• Verify that the set point on the control is set low enough to allow the unit to run for the entire length of the
brazing, evacuation and charging procedure.
• Remove the valve depressors from the gauge hoses on a four valve manifold.
• Connect the manifold to the low pressure service valve port on the condensing unit.
• Open the suction line service valve and purge nitrogen through the system.
• Braze all connections and cool off quickly
• Cap both access valves on the suction line
• Connect the high pressure hose from the manifold to the liquid line valve port.
• Pressure test the system at 150 psi for 20 minutes
o Check all braze joints with leak detector or soap bubbles
• Release the nitrogen once it is confirmed that there are no leaks
INSTALLING THE CONDENSING UNIT (continued)