10.
This decision allows to set the setpoint which is used for auto Z Multiplier calculation. The Z Multiplier
calculation tries to maintain, for each compressor, a maximum number of starts per hour equal to [zm_spt].
Thus, decreasing the setpoint shall increase the reactivity of the auto Z Multiplier to compressors cycling.
11.
The Z Multiplier parameter allows to adjust the on/off time delay between compressors staging. It doesn't
affect loaders staging. Increasing this value shall increase the on/off time delay but shall reduce the
accuracy on the leaving temperature control.
w
Tthe current Z Multiplier is the result of calculation based on the number of starts of compressors.
However, the maximum Z multiplier calculation will be limited to the value entered in this decision.
12.
This item allows the entering fluid control. Default is leaving fluid control. Entering fluid control can be used
for small charge.
4.2.4.2 - Service1 configuration table from main interface
The main interface allows to view and modify the service configuration table SERVICE1. Unit shall be stopped
and service password or factory password are required.
Entering fluid temperature control select
ewt opt
18
Cooling and Heating Z multiplier.
hc_zm
17
Auto z multiplier setpoint.
zm_spt
16
Close capacity control select
cls ctrl
15
Maximum Current differential in percent of MTA.
curr dif
14
Maximum Current setpoint in percent of MTA
curr max
13
Maximum Condensing Temperature differential.
mct diff
12
Maximum Condensing Temperature setpoint
mct_sp
11
Cooler pinch T setpoint Circuit B (lwt - sst setpoint displayed only if cap_b1 > 0).
pinc_p_b
10 [2]
Cooler pinch setpoint Circuit A (lwt - sst setpoint)
pinc_p_a
9
Discharge superheat setpoint circuit B (displayed only if cap_b1 > 0).
dsh_sp_b
8 [2]
Discharge superheat setpoint circuit A.
dsh_sp_a
7
Setpoint head pressure control - Derivative gain for Varifan or water valve control. Masked if the
Varifan or the water valve is not selected (hd_selec
= 0).
hd_sp_dg
6 [2]
Setpoint head pressure control - Integral gain for Varifan or water valve control. Masked if the
Varifan or the water valve is not selected (hd_selec
= 0).
hd_sp_ig
5 [2]
Setpoint head pressure control - Proportional gain for Varifan or water valve control. Masked if
the Varifan or the water valve is not selected (hd_selec
= 0).
hd_sp_pg
4 [2]
Fan control - head pressure differential
head_dif
3[2]
Fan control - head pressure differential timer.
head_tim
2 [2]
Fluid type select.
flui_typ
1
When selected this item shall allow to return to main menu.
-
0
COMMENTS
VARIABLE
ITEM #
©
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: 27 /98
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