17
b) Connection to a Closed Loop System
Condenser Water
Supply Inlet
Minimum Condenser
Water Supply Line Size
Condenser
Return Outlet
Minimum Condenser
Return Line Size
1/2" Female Pipe
Thread (FPT)
1/4" Nominal ID Copper
Water Tubing or Equivalent
1/2" Female Pipe
Thread (FPT)
1/4" Nominal ID Copper
Water Tubing or Equivalent
• Shut-off valves and drain valves must be installed at both the condenser water supply
inlet and condenser return outlet.
• Minimum water fl ow to the condenser is 4 GPM.
• The pressure differential between the condenser water supply inlet and condenser return
outlet must be no less than 10 PSIG.
• When using a glycol blend, the solution mixture should be less than 30% glycol.
• In order to maintain the proper high side pressure, the condenser water supply inlet
temperature must be in the 45°F to 90°F (7°C to 32°C) range.
Fig. 6
KM-151BWH
Icemaker Water Supply
Inlet 1/2” FPT
Icemaker Drain
Outlet 3/4” FPT
Condenser Return
Outlet 1/2” FPT
Condenser Water
Supply Inlet 1/2” FPT
2-inch (5-cm) air
gap
Drain
Floor
To approved fl oor drain
1/4” fall per foot
Icemaker Water Supply
Line Shut-off Valve
Icemaker Water Supply
Line Drain Valve
Minimum 1/4” Nominal ID
Copper Water Tubing
Condenser Water Supply
Line Shut-off Valve
Condenser Water Supply
Line Drain Valve
Minimum 3/4” Nominal
ID Hard Pipe
Trap
Condenser Return Line
Shut-Off Valve
Condenser Return
Line Drain Valve
Be sure there is suffi cient
extra water supply line and
drain line for the appliance
to be pulled out for service.
Separate piping to approved
drain. Leave a 2-inch (5-cm)
vertical air gap between the
end of each pipe and the
drain.
