Manual

11
www.climacoolcorp.com
LOAD 1
FROM CHILLER BANK
TYPICAL LOAD BYPASS VALVE ARRANGEMENT
TO CHILLER BANK
LOAD 2 LOAD 3 LOAD X
TYPICAL CHILLED AND HOT WATER
LOAD SIDE BYPASS VALVES
SIZE EQUIVALENT TO ONE MODULE
WORTH OF FLOW
Figure 8 - Typical Load Bypass Valve Arrangement


modules remaining for that duty. Also, with a module acting
as a bypass increased wear of heat exchangers may be



shown on page 10. The bypass kits must be installed on
each water source loop and controls are integrated with the
CoolLogic software. Installation location can be found on


The design piping must accommodate one module’s worth


bypass mode. See Figures 9 and 10 on page 12 - Water
The eld supplied piped chiller/
heater system bypass must be controlled by others. There
are system communication delays, polling and network




water/evaporator, hot water/condenser water systems.
Load Side System Bypass (Air Handlers, Fan
Coils, etc.)
A load system bypass is required for preventing pump


Examples of an acceptable load side system bypass are:
•Utilize a quantity of 3-way control valves on the largest
loads farthest from the chiller/heater system.
•Field piping with a control valve to provide a bypass across
the larger system loads when their 2-way valves go closed.
Please refer to Figure 8 for a typical load bypass
valve arrangement. The load side system bypass should
be sized for an absolute minimum of one module’s worth

A minimum of (6) six gallons per
nominal system ton are also required to maintain proper
system thermal inertia. This is to avoid short cycling of
compressors in the chiller/heater system as well as prevent
nuisance alarms.
Water Piping