ClimaCool UCA 20, Installation, Operation And Maintenance Manual

Page: 19 / 92

17
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www.climacoolcorp.com
As with any water system, it is important that the system
be clean. The pipe work installer must remove weld scale,
rust and contamination during pipe work fabrication.
Š‡•›•–‡™ƒ–‡”’‹’‹‰—•–„‡ƪ—•Š‡†–Š‘”‘—‰ŠŽ›
™‹–Š”‡ ‘‡†‡†ƒŽƒŽ‹‡ƪ—•Š‘”‘–Š‡” Š‡‹ ƒŽ•–Šƒ–
are compatible with 316 stainless steel prior to making
connections to the ClimaCool chiller. There are certain
necessary components that should always be installed in
the chilled water system. (See Figures 21 and 22 on page 19 -
ƒ–‡”‹’‹‰‘Ƥ‰—”ƒ–‹‘•ˆ‘” ‘Ƥ‰—”ƒ–‹‘•™‹–Š—Ž–‹’Ž‡
modules). All water piping must be installed in accordance
with applicable codes and standards.
Temperature Sensor and Wells
ClimaCool provides two (2) temperature sensors and
wells with each two pipe chiller system and four (4) with
simultaneous heating & cooling four pipe chiller systems
‘Ƥ‰—”‡†„›–Š‡
CoolLogic Control System. They must
„‡Ƥ‡Ž†‹•–ƒŽŽ‡†ƒ‹‹—‘ˆ͚͗dz„—–‘‘”‡–Šƒ͚͔dz
away from the bank and before the strainer on the chilled
water inlet and chilled water outlet (See Water Piping
‘Ƥ‰—”ƒ–‹‘•Ȃ’ƒ‰‡͕͝ȌǤ
Note: Sensors must be fully
inserted into the well to obtain proper readings. Use a
slender, blunt instrument to gently push the sensor to the
bottom of the sensor well.
”‡••—”‡‹ơ‡”‡–‹ƒŽ Ž‘™‡•‘”
–‹•‹’‡”ƒ–‹˜‡–Šƒ–‹‹—ƒ†ƒš‹—™ƒ–‡”ƪ‘™
”ƒ–‡•ǡƒ•†‡Ƥ‡†‹–Š‡’‡”ƒ–‹‘ƒŽ‹‹–ƒ–‹‘•‘’ƒ‰‡
26, are not exceeded. To prevent operation of the chiller
™‹–Š‘—–•—ƥ ‹‡–™ƒ–‡”ƪ‘™–‘–Š‡‡˜ƒ’‘”ƒ–‘”ǡ‹–‹•
”‡“—‹”‡†–‘‹•–ƒŽŽƒ’”‡••—”‡†‹ơ‡”‡–‹ƒŽƪ‘™•‡•‘”‹
the chilled water circuit. Place downstream of the strainer
on the outlet of a straight pipe, as close to the module
as possible.
Do not put in an elbow on the outlet. When
‘‡ –‹‰–—„‹‰–‘–Š‡†‹ơ‡”‡–‹ƒŽ’”‡••—”‡•‡•‘”ǡ„‡
sure to bleed any air from the tubing before tightening.
ȋ‡‡ƒ–‡”‹’‹‰‘Ƥ‰—”ƒ–‹‘•Ȃ’ƒ‰‡͕͝ȌǤ
Pressure Taps
The installing contractor must provide access ports for
‘‡ –‹‰–Š‡’”‡••—”‡†‹ơ‡”‡–‹ƒŽƪ‘™–‡’‡”ƒ–—”‡
sensors and pressure gauges for the chilled water system.
A 1/4” pressure tap is required on the inlet and the outlet
of the chilled water system for a total of four (4) taps
with each two (2) pipe chiller system and six (6) with each
simultaneous heating and cooling four pipe chiller system.
ˆƒ’‘”–‹••Šƒ”‡†„›–Š‡’”‡••—”‡†‹ơ‡”‡–‹ƒŽƪ‘™•‡•‘”
and the pressure gauge it will require two (2) 1/2” taps.
ȋ‡‡ƒ–‡”‹’‹‰‘Ƥ‰—”ƒ–‹‘•Ȃ’ƒ‰‡͕͝ȌǤ
Water Isolation Valves
It is recommended to provide bank water isolation valves for
proper isolation and maintenance of the chiller, pump and
•–”ƒ‹‡”ȋ‡‡ƒ–‡”‹’‹‰‘Ƥ‰—”ƒ–‹‘•Ȃ’ƒ‰‡͕͝ȌǤ
Strainers – Minimum 60 Mesh Screen Required
ClimaCool chillers utilize brazed plate heat exchangers
which are extremely sensitive to debris.
Therefore, it is
mandatory that all chilled water systems include a strainer
™‹–Šƒ‹‹—‘ˆ͚͔‡•Š• ”‡‡ˆ‘”’”‘’‡”ƤŽ–”ƒ–‹‘Ǥ
The strainer must be installed as shown in the Water Piping
‘Ƥ‰—”ƒ–‹‘•‘’ƒ‰‡͕͝ƒ†„‡‹’Žƒ ‡ƒ–ƒŽŽ–‹‡•
when the chiller is operating. ClimaCool’s warranty does
not cover and does not apply to products which have
defects or damages due to freezing of the water supply,
an inadequate or interrupted water supply, corrosives or
abrasives in the water supply, or improper or inadequate
ƤŽ–”ƒ–‹‘‘”–”‡ƒ–‡–‘ˆ–Š‡™ƒ–‡”•—’’Ž›Ǥ
Chiller/Heater System Water Header Bypass
A bypass is required for any load cooling, cooling only and
load cooling and load heating, simutaneous heating and
cooling heat pump with variable pumping. The chiller bank
bypass must be piped in such a way that the temperature
ƒ†’”‡••—”‡†‹ơ‡”‡–‹ƒŽƪ‘™•‡•‘”•ƒ”‡•–‹ŽŽ•‡•‹‰
ƒ –‹˜‡ƪ‘™Ǥȋ‡‡ƒ–‡”‹’‹‰‘Ƥ‰—”ƒ–‹‘Ȃ’ƒ‰‡͕͝ȌǤ
The purpose of the chiller/heater system bypass is to
prevent deadheading of the pumps when all of the internal
unit valves go closed as well as allow temperature and
†‹ơ‡”‡–‹ƒŽ’”‡••—”‡•‡•‘”•–‘•‡•‡ƒ –‹˜‡ƪ‘™ǤŠ‡
bypass should be sized for an absolute minimum of one
‘†—Ž‡ǯ•™‘”–Š‘ˆ†‡•‹‰ƪ‘™ǤȋŽ‡ƒ•‡”‡ˆ‡”–‘•‡Ž‡ –‹‘
•—„‹––ƒŽ•ˆ‘”†‡•‹‰ƪ‘™”ƒ–‡•ȌǤ
‘†—Ž‡• ƒ„‡†‡•‹‰ƒ–‡†ˆ‘”Ƥš‡†„›’ƒ••ˆ‘”Š‡ƒ–‹‰ǡ
cooling, however, this limits the number of modules
remaining for that duty. Also, with a module acting as a
bypass increased wear of heat exchangers may be caused
„›ƒ„”ƒ•‹‘ˆ”‘„›’ƒ••ƪ‘™Ǥ
Water Piping
No. 29 Reducing Tee
w/Thd. Branch
6 x 6 x 2
END VIEW
No.10
2" 90°
Elbow
No.50 Reducer
6 x 2
Hose Kit
2" Belimo
Ball Valve &
Actuator
2"
Grooved
Coupling
No.10
2" 90°
No.50
Reducer
6 x 2
Module
Header
No. 29 Reducing Tee
w/Thd. Branch
6 x 6 x 2
Module
Header
SIDE VIEW
6"
G
ro
o
v
e
d
Coupling
6"
G
ro
o
v
e
d
Coupling
2"
Gro
o
v
e
d
Coupling
Hose Kit
2"
Grooved
Coupling
2" Belimo
Ball Valve &
Actuator
Figure 18 - Reverse Return