Water Service/Drains - Koolaire KD0172A Lnstallation, Operation And Maintenance Manual

Section 2

Water Service/Drains

WATER SUPPLY
Local water conditions may require treatment of the
water to inhibit scale formation, filter sediment, remove
chlorine, and improve taste and clarity.
!
PERSONAL INJURY POTENTIAL
For ice making, connect to a potable water supply
only.
Important
If you are installing a water filter system, refer to
the Installation Instructions supplied with the filter
system for ice making water inlet connections.
WATER INLET LINES
Follow these guidelines to install water inlet lines:
• Do not connect the ice machine to a hot water
supply. Be sure all hot water restrictors installed for
other equipment are working. (Check valves on sink
faucets, dishwashers, etc.)
If water pressure exceeds the maximum 
•
(80 psig-551.5 kPA) recommended pressure, obtain
a water pressure regulator from your local distributor.
• Install a water shut-off valve and union for both the
ice making and condenser water lines.
• Insulate water inlet lines to prevent condensation.
Water Supply and Drain Line Sizing/Connections
Location
Temperature
Ice Making 40F (4C) Min.
Water Inlet 90F (32C) Max.
Condenser Water
Inlet
40F (4C) Min.
90F (32C) Max.
Condenser Water
Drain
Bin Drain
Part Number 040004686 8/15
Warning
Water
20 psi (137.9 kPA) Min.
80 psi (551.5 kPA) Max.
20 psi (137.9 kPA) Min.
150 psi (1034.2 kPA) Max.
---
---
DRAIN CONNECTIONS
Follow these guidelines when installing drain lines to
prevent drain water from flowing back into the ice
machine and storage bin:
• Drain lines must have a 1.5 inch drop per 5 feet of
run (2.5 cm per meter), and must not create traps.
• The floor drain must be large enough to
accommodate drainage from all drains.
• Run separate bin and water-cooled condenser drain
lines. Insulate them to prevent condensation.
• Vent the bin drain to the atmosphere. Do not vent the
condenser drain on water-cooled models.
COOLING TOWER APPLICATIONS
(Water-Cooled Models)
A water cooling tower installation does not require
modification of the ice machine. The water regulator
valve for the condenser continues to control the
refrigeration discharge pressure.
It is necessary to know the amount of heat rejection and
the pressure drop through the condenser and water
valves (inlet and outlet) when using a cooling tower on
an ice machine.
• Water entering the condenser must not exceed 90F
(32C).
• Water flow through the condenser must not exceed 5
gallons (19 liters) per minute.
• Allow for a pressure drop of 7 psi (48 kPA) between
the condenser water inlet and the outlet of the ice
machine.
• Water exiting the condenser must not exceed 110F
(43C).
Water
Pressure
3/8" Female Pipe
3/8" Female Pipe
1/2" Female Pipe
--- 1/2" Female Pipe
--- 1/2" Female Pipe
Installation Instructions
Ice Machine Tubing Size Up to Ice
Machine Fitting
Fitting
3/8" (9.5 mm) minimum
Thread inside diameter
3/8" (9.5 mm) minimum
Thread inside diameter
K270 Only
1/2" (12.7 mm)
Thread
minimum inside diameter
1/2" (12.7 mm) minimum
Thread inside diameter
1/2"" (12.7 mm) minimum
Thread inside diameter
K270 Only
9