13.
Yes = Use Pro_dialog 4 auxiliary boards instead of old 4xAO-2xAO board and 4xDO board
No = Use old 4xAO-2xAO board & 4x DO board (shall be set to no for version 1 retrofit)
3.
When this item is selected, both compressor use the common economizer transducer in the economizer.
Otherwise, each compressor uses it own economizer transducer, located in the refrigerant injection pipe
line, near the motor cooling valve. Economizer pressure represents the intermediary pressure between
high pressure and low pressure. It is used to determine the oil differential pressure (oil pressure -
economizer pressure).
4.
The use of large band oil pressure transducer is required for low ambient application and is only applied on
oil pressure transducers since high pressure range transducer can not read pressure lower than 2.4 bars,
Calibration is automatically determined each time the control is in OFF mode and both suction and
discharge pressures are equalized. Differences between oil pressures and suction pressure are then
stored as offset (if less than 0.4 bar).
5.
MTA configuration is required for capacity calculation, motor current measurement and protection. This
value shall match the one read from MTA header configuration on screw compressor board, if not an alarm
will be generated.
6.
If only reclaim sensor is selected and reclaim option is not, an 4xAI-2xAO board is required, and reclaim
temperature sensor are used for information only.
7.
Reclaim option requires an Aquasnap Basic board for reclaim entering and leaving temperatures,
solenoids, an analogue output to control the reclaim condenser water valve, 2 transducers for reclaim
pumpdown injection pressure.
8.
This items indicates the number of pass the cooler fluid goes through the cooler. For example, if cooler
enters from circuit A and goes out by circuit A and only 1 time, then a number of 2 shall be entered. This
item is used for exv control when caculating cooler pinch.
9.
This items indicates if cooler leaving temperature sensor is in the circuit A or not. If cooler leaving pipe line
is on side A, then Yes shall be entered, otherwise, no shall be required. This item is used for exv control
when caculating cooler pinch.
10.
Cooler heater option requires an Aquasnap Basic board for refrigerant isolation solenoids and heater
output.
11.
Factory password is required when accessing the main interface factory menu. Factory password can be
used to access to service and user configuration sub menus.
12.
1500 = For Muller valve, Unipolar, 1500 steps, 33 steps/s (1500 steps shall be kept !!!)
15000 = For Muller valve phase 3, Bipolar, 15300 steps, 300 steps/s (for future use,)
Note: schemes are described in appendix C.
©
C
ARRIER
S
.
A
NOT
TO
BE
DISCLOSED
TO
PERSONS
OUTSIDE
CARRIER
ORGANIZATION
CARRIER SA
USER'S GUIDE FOR
30GX&HX PRO_DIALOG 4 V.2
ECG - UG - 02 - 02
Rev: Original
Page: 22 /98
Downloaded from
www.Manualslib.com
manuals search engine