ClimaCool UCA 20, Installation, Operation And Maintenance Manual

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18
No. 25 Grooved Branch
6 x 6 x 2
No. 29 Reducing Tee
w/Thd. Branch
6 x 6 x 2
END VIEW
Hose Kit
2" Belimo
Ball Valve &
Actuator
2"
Grooved
Coupling
No. 25 Grooved Branch
6 x 6 x 2
Module
Header
6"
G
ro
o
v
e
d
Coupling
No. 29 Reducing Tee
w/Thd. Branch
6 x 6 x 2
Module
Header
6"
Grooved C
o
u
p
lin
g
SIDE VIEW
2" Belimo
Ball Valve &
Actuator
Hose Kit
2"
Grooved
Coupling
Figure 19 - Direct Return
Water Piping
Load Side System Bypass (Air Handlers, Fan
Coils, etc.)
A load system bypass is required for preventing pump
†‡ƒ†Š‡ƒ†‹‰ǡƒŽŽ‘™‹‰ƒ –‹˜‡ƪ‘™•›•–‡•‡•‹‰ƒ†
’”‡˜‡–‹‰•–ƒ”˜‹‰ƪ‘™ˆ”‘–Š‡ Š‹ŽŽ‡”ȀŠ‡ƒ–‡”•›•–‡Ǥ
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 20 for a typical load bypass valve
arrangement. The load side system bypass should be sized
for an absolute minimum of one module’s worth of design
ƪ‘™ǤȋŽ‡ƒ•‡”‡ˆ‡”–‘•‡Ž‡ –‹‘•—„‹––ƒŽ•ˆ‘”†‡•‹‰ƪ‘™
rates). 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.
LOAD 1
FROM CHILLER BANK
TO CHILLER BANK
LOAD Ϯ LOAD 3 LOAD X
Figure 20 - Typical Load Bypass Valve Arrangement
TYPICAL CHILLED AND HOT WATER
LOAD SIDE BYPASS VALVES
SIZE EQUIVALENT TO ONE MODULE
WORTH OF FLOW
FROM CHILLER BANK
TO CHILLER BANK
Ž‹ƒ‘‘Ž‘ơ‡”•–™‘–›’‡•‘ˆ™ƒ–‡”Š‡ƒ†‡”„›’ƒ••‹–•ǡ
reverse return (Figure 18) and direct return (Figure 19).
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 page 19 – Water
‹’‹‰‘Ƥ‰—”ƒ–‹‘Ǥ
Š‹•„›’ƒ•• ƒƒŽ•‘„‡ ”‡ƒ–‡†™‹–ŠƤ‡Ž†•—’’Ž‹‡†’‹’‹‰Ǥ
The design piping must accommodate one module’s worth
‘ˆ†‡•‹‰ƪ‘™ǡƒ†„‡’‘•‹–‹‘‡†•‘–Šƒ––Š‡–‡’‡”ƒ–—”‡
ƒ††‹ơ‡”‡–‹ƒŽƪ‘™•‡•‘”••‡•‡ƒ –‹˜‡ƪ‘™‹–Š‡„›’ƒ••
‘†‡Ǥȋ‡‡ƒ–‡”‹’‹‰‘Ƥ‰—”ƒ–‹‘Ȃ’ƒ‰‡͕͝ȌǤ
The
Ƥ‡Ž†•—’’Ž‹‡†’‹’‡† Š‹ŽŽ‡”ȀŠ‡ƒ–‡”•›•–‡„›’ƒ••—•–„‡
controlled by others. There are system communication
†‡Žƒ›•ǡ’‘ŽŽ‹‰ƒ†‡–™‘” ‘ƪ‹ –•–Šƒ–•–”‹ –Ž›’”‘Š‹„‹–
the use of ClimaCool sensors and controls for control
‘ˆƤ‡Ž†•—’’Ž‹‡†„›’ƒ••‡•‘”‘–Š‡”Ƥ‡Ž†•—’’Ž‹‡†‹–‡•Ǥ
‡ ‘‡†‡†‡–Š‘†‹•–‘ ‘–”‘Ž˜‹ƒ†‹ơ‡”‡–‹ƒŽ’”‡••—”‡
‘”‰’ƪ‘™‡–‡”•ƒ ”‘••–Š‡Ž‘ƒ† ‘‘Ž‹‰ȀŽ‘ƒ† ‘‘Ž‹‰ƒ†
heating water systems.