Manual
INSTALLATION INSTRUCTIONS
Air of Water Cooled Chillers
1. When the chiller is delivered, check for any shipping damage. If any are found, a freight claim
should be filed at once with the carrier.
2. This water chiller is designed with a contaminant free chilled water system, stainless steel
reservoir, and all copper evaporator ion brazed plate evaporator. Installed properly, it will give
you years of trouble free service. Therefore, it is important that the chilled water piping system
you are using to plumb this water chiller is also as contaminant free as possible. When you take
this into consideration you will have a most efficient water-cooling system. Should you need
assistance to clean up an old chilled water system or to keep a new system clean, we suggest
you contact your local water treatment company.
3. Place the water chiller in an area that allows easy access to the service doors and control panel
for routine maintenance and inspection. For the air-cooled unit, make sure it is in an area where
there is good air circulation over the condenser inlet, 26” from an obstruction. For the water-
cooled unit, make sure it has a good water supply by keeping the piping to the condenser same
size as provided by the chiller. Restrictions of air to the air-cooled condenser or water to the
water-cooled unit will not only affect the efficiency of the unit, but will also cause damage to the
refrigeration system. Note: Do not mix up the inlet and the outlet to the condenser on water-
cooled units. Water-cooled takes 3gpm, per ton for condenser water.
4. Make sure the ceiling above the fan discharge is over 12 feet to avoid recirculation of the
condenser air, because recirculating condensed air can cause the unit to cut off on the high-
pressure switch. If the ceiling is lower than 12 feet, a straight duct out of the ceiling should be
installed in order to prevent the air from recirculating over the condenser.
5. Make up two chilled water lines, a discharge and a return line. The fitting on the chiller for these
lines is 1” pipe coupling. IT SHOULD BE NOTED THAT THERE IS A ¼”
COPPER BY-PASS LINE BETWEEN THE WATER PUMP AND THE
WATER TANK. This by-pass allows just enough water to circulate
through the water system in order to prevent damage to the water pump
in case the chilled water discharge is shut off. This small amount of
water will not affect the efficiency of the unit.
6. Fill the chilled water tank through the hose bib, which is located on the
chilled water return line. Fill the tank until it reaches the level as marked
on the water sight glass. The water level should be kept within 1” of the
marked level. Deionized water may be used if the water resistance is between 2,000 to 166,000
Ohms.
7. Verify that the supply voltage power matches the supply voltage stated on the serial plate located
in front of the electrical door. When applying power to the water pump (by turning the manual
switch on), make sure the main disconnect is in the “off” position and all the switches on the
control panel are in the “off” position. It is necessary to check the rotation of the water pump.
Close the doors when the above conditions are satisfied, then turn the disconnect to “on.”
8. Allow the chiller to be on stand by for 3 hours prior to full usage to allow the crank case heater to
heat the compressor. PLEASE READ SECTION ON CRANK CASE HEATER.
9. When ready, refer to the controller section to operate the chiller. Turn on the pump from the
controller at this time. It is necessary to check for leaks throughout the piping system. If the
condition is satisfied, adjust the desired supply temperature set point. By default, the controller is
set for 47
o
F. As a reminder, if the desired set point is 36
o
F or below, antifreeze should be added
to the reservoir. The maximum mixture is 30% by weight of propylene or ethylene glycol. Never
add more than necessary, as it will reduce the cooling capability of the chiller.
¼” BY-PASS