Hoshizaki KM-1301S J-E Series Installation Manual page 13

b) Connection to a Closed Loop System
• Condenser water supply inlet is 1/2" female pipe thread
(FPT). A minimum of 3/8" (10 mm) nominal copper water
tubing is recommended for the condenser water supply
line.
• Condenser return outlet is 3/8" FPT. A minimum of 3/8"
(10 mm) nominal copper water tubing is recommended for
the condenser return line.
• Shut-off valves and drain valves should be installed at both
the condenser water supply inlet and condenser return
outlet.
• The water supply to the condenser should not drop below
4 GPM (15 LPM).
• The pressure differential between the condenser water
supply inlet and condenser return outlet must be no less
than 10 PSIG (0.7 bar).
• When using a glycol blend, the solution mixture should be
less than 30% glycol.
Icemaker Water
Supply Inlet
1/2" FPT
Condenser Water
Supply Inlet
1/2" FPT
Condenser
Return Outlet
3/8" FPT
Bin
Icemaker
Drain Outlet
3/4" FPT
Condensation
Drain Outlet
3/8" (9.5 mm) OD Hard Tube
Fig. 18
Icemaker
Vent Tube
Bin Drain Outlet
See Manufacturer's Instructions
KM-1301SWJ-E
Connection to a Closed Loop System
13
• In order to maintain the proper high side pressure, the
condenser water supply inlet temperature should not
drop below 45°F (7°C) and the condenser return outlet
temperature must be in the 104°F to 115°F (40°C to
46°C) range. Once the icemaker installation is complete,
confirm the condenser return outlet temperature
5 minutes after a freeze cycle starts. If the condenser
return outlet temperature is not in the proper range, use
a flat blade screwdriver to rotate the adjustment screw on
the water-regulating valve until the temperature is in the
proper range (rotate counterclockwise to raise temperature
or clockwise to lower temperature).
Minimum 3/8" (10 mm) Nominal Copper Water Tubing
Minimum 3/8" (10 mm) Nominal Copper Water Tubing
Icemaker Water Supply Line Drain
Valve
Condenser Water Supply Line Shut-Off
Valve
Condenser Water Supply Line Drain Valve
Condenser Return Line Drain Valve
Separate piping to approved drain. Leave a
2-inch (5-cm) vertical air gap between the
end of each pipe and the drain.
Minimum
3/4" (18 mm)
Nominal Hard
Pipe
Vent Tube
Icemaker Water Supply Line Shut-Off
Valve
Condenser Return Line
Shut-Off Valve
2-inch (5-cm) air gap
Floor
Drain