4.18.3 - Air Cooled To Reclaim Changeover Initiation
A non-reclaim to reclaim injection session has been required and at least one compressor is on and the unit is not
failed and the entering reclaim temperature is not failed and this one is below the reclaim setpoint - half of configured
reclaim deadband and delay between the last reclaim injection has elapsed.
4.18.4 - Reclaim Operation status hr_status Description
Information on reclaim operation is available on table RECLAIM (hrstatus) or on INFORMATION menu (hr_status).
hr_status parameter shall contain reclaim operation indicator of both circuit in two digits, one digit per circuit (left digit
for circuit A, the other for circuit B) with the following description :
Reclaim failed due to flow switch
5
Reclaim pumpdown failed
4
Reclaim operation active
3
Reclaim pumpdown mode
2
Reclaim mode request
1
Air cooled operation
0
Status description
reclaim operation
indicator
*note : in case of reclaim operation failure (alarm # 83 for circuit A, alarm # 84 for circuit B), hr_status will not be
initialized until the manual reset on main interface is done.
4.18.5 - Reclaim Operation Using Air Cooled Exchanger
To avoid high pressure problem, the remained condenser (hr_val_x) can be turned ON if SCT is above reclaim
se 8.3 deg C and all fans are ON provided that fans staging is not enough to avoid the risk of exceeding high
pressure override threshold. When turning ON, the remained condenser (hr_val_a) is kept to ON for at least 3
minutes to let fans staging to be stabilized. This condenser can be turned OFF if it has been ON for more than 3
minutes and if saturated condensing temperature is below the reclaim setpoint (rsp) to ensure the reclaim operation
performance.
4.18.6 - Reclaim Condenser Water Valve Control
if unit is not in reclaim operation, then the reclaim condenser water valve remains in minimum position.
In reclaim operation :
w
If reclaim entering temperature is below 20 deg C, then reclaim condenser valve is at minimum position.
w
If reclaim entering temperature is above 40 deg C, then reclaim condenser valve is at maximum position.
w
If entering temperature is within the range 20 degC and 40 deg C, then reclaim condenser water valve position
will be an interpolation between minimum and maximum position.
4.18.7 - Reclaim Condenser Heater Control
Reclaim condenser heater is ON when entering or leaving fluid are lower than 3.0 deg C( 37.4 degF). It is turned
OFF when both temperatures are above 4.4 deg C (40.0 deg F).
CARRIER SA
USER'S GUIDE FOR
30GX&HX PRO_DIALOG 4 V.2
ECG-UG-02-002
Rev: Original
Page: 52/98
©
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ARRIER
S
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