ClimaCool SHC onDEMAND 30, 50, 70, 85 Manual - Manual (Page 27)

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Startup
ŽŽ•–ƒ”–—’•—•–„‡’‡”ˆ‘”‡†„›Ž‹ƒ‘‘Žˆƒ –‘”›
trained personnel.
1. Review all items are complete from the Pre Startup
Check List.
2. Cross reference model number with submittal sheet
to verify that the units are the correct model type and
voltage requirements.
3. Verify the location and wiring connections of all main
header temperature sensors (should be a minimum of
͚͗dz„—–‘‘”‡–Šƒ͚͔dzˆ”‘–Š‡„ƒȌǤ‘Ƥ”–Šƒ–
all sensors are FULLY INSERTED into their sensor wells
and wired back to the correct terminals in the Master
Control Panel.
4. ‡”‹ˆ›–Š‡Ž‘ ƒ–‹‘ƒ†’‘”–•ˆ‘”ƒŽŽ™ƒ–‡”†‹ơ‡”‡–‹ƒŽ
’”‡••—”‡•‡•‘”•—•‡†ˆ‘”ƪ‘™†‡–‡ –‹‘ȋȋΪȌ’‘”–’‹’‡†
to the inlet headers and the (-) ports piped to the outlet
headers).
• Verify the correct wiring using the +5VDC power
•—’’Ž›–‘–Š‡†‹ơ‡”‡–‹ƒŽ•‡•‘”‹’—–•Ǥ
• ‡”‹ˆ›–Š‡ ‘””‡ –‘—–’—–™‹”‹‰ˆ”‘–Š‡†‹ơ‡”‡–‹ƒŽ
sensors back to the master controller universal input
ȋ Ȍ Šƒ‡Ž•͜ƒ†͕͕Ǥ‘Ƥ”‹’—–•͜ƒ†͕͕
jumpers are set to ‘volts’. Note:Š‡†‹ơ‡”‡–‹ƒŽ
sensor ports should NOT be piped to a location which
includes strainer pressure drops.
5. Verify that all header inlets (condenser, evaporator,
source side) include strainer assemblies equipped with
60 mesh screens.
6. Inspect all refrigerant piping for oil leaks which may
have occurred during shipment which might indicate a
refrigerant leak. Check the high pressure cutout setting
of the pressure controls. The setting should be 585 psig
for all UCH models.
7. Verify the location and settings of the phase loss
monitor. It should be in a location to sense the voltage
condition in the main, high voltage panel which feeds
high voltage to each module independently. (See
Electrical Connections on page 21). Verify the low voltage
output wiring from the phase loss monitor (terminals
4 and 5) back to the main CoolLogic controller, input
channel 12.
8. Verify the settings of the motorized water isolation
valves auxiliary switch dial settings, to ensure they
close near:
• 15% for source valve (condenser) and load side
(evaporator or heat)
9. ‘Ƥ”–Šƒ––Š‡ƒ‹™ƒ–‡”’—’•ƒ”‡†”‹˜‡„› ǯ•ǡ
and that all VFD’s are controlling the pump speeds to
’”‘†— ‡ƒ‘‹ƒŽ†‹ơ‡”‡–‹ƒŽ’”‡••—”‡†”‘’ƒ ”‘••
the chiller bank headers, measured precisely at the
†‹ơ‡”‡–‹ƒŽ’”‡••—”‡•‡•‘”Ž‘ ƒ–‹‘•‹•–‡’͘ƒ„‘˜‡Ǥ
‘‹ƒŽ†‹ơ‡”‡–‹ƒŽ’”‡••—”‡”ƒ‰‡•ƒ”‡ˆ”‘͗–‘
10 psid.
10. ‘Ƥ”–Š‡Œ—’‡”Ž‘ ƒ–‹‘•ˆ‘”ƒŽŽƒ•–‡” ‘–”‘ŽŽ‡”
and module controllers as shown on the wiring diagrams
provided on the inside electrical door panels.
• Set the rotary switches for the MAC Address of the
master controller to be “01.”
• Set the rotary switches for the module controllers to
be “02” for module #1, “03” for module #2, and so on.
11. Tighten every screw and lug connection inside the
CoolLogic master control panel and inside each module
control panel high voltage section. Check auxiliary
contacts on contactors and ensure #1 auxiliary is wired
on the #1 contactor. Open up the compressor junction
box located on the front of each compressor and verify
main electrical terminal lug tightness and the low
voltage wires on protection module.
12. Verify the communication cable wiring to ensure it is
18 AWG, simple two conductor shielded cable and that
the wiring is alone inside solid conduit between the
ƒ•–‡” ‘–”‘Ž’ƒ‡Žƒ†–Š‡Ƥ”•–‘†—Ž‡ ‘–”‘Ž’ƒ‡ŽǤ
Verify the cable’s outer jacket is not stripped more than
one inch. If so, the wires may have become untwisted,
ƒ—•‹‰•‹‰ƒŽ”‡ƪ‡ –‹‘•Ǥ‘Ƥ”–Š‡™‹”‡•ƒ”‡
connected correctly to the terminal blocks at the
master and each module as follows:
Black wire to Net-
White wire to Net +
Shield wire to Shield
13. Power-up the master control panel and download the
ƒ’’”‘’”‹ƒ–‡ Ž‹’’‹‰ƤŽ‡‹–‘–Š‡ƒ•–‡” ‘–”‘ŽŽ‡”ǡ
following instructions.
14. Power up each module control panel, turn OFF the two
toggle switches located on the inside bottom of the low
voltage side of the module electrical panel. Download
–Š‡ƒ’’”‘’”‹ƒ–‡ Ž‹’’‹‰ƤŽ‡‹–‘–Š‡‘†—Ž‡ ‘–”‘ŽŽ‡”•ǡ
following the instructions.
15. Check for proper line or high voltage values at each
module input power block, and the 24 VAC low voltage
values for correctness (+/- 10% of nominal values).
16. ͖͔͜Ȁ͖͔͗—‹–•ǡ ‘Ƥ”–”ƒ•ˆ‘”‡”ȋ•Ȍƒ”‡’”‘’‡”Ž›
tapped for the measured incoming power supply.
17. Use refrigerant gauge set suitable for the high pressure
R-410A, and hook up to the suction and discharge
ports of each module’s compressor stages separately.
Bump start the compressors either by depressing
the contactor manually, or by using the manual run
commands from the Master Control Panel, (found in
the FN 7, or the service menu). Bump the compressor
only for 1-2 seconds to ensure the correct rotation of
the scroll compressors (indicated by a rising highside
pressure and a falling suction pressure).