Lennox A111C, Руководство пользователя, Страница: 12 / 20

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COD: The code which appears on the display
The field variation for the parameters,
MIN: Minimum value for the parameter.
MAX: Maximum value for the parameter.
UNIT: The units of measure used.
C=Centigrade, F=Fahrenheit, s= seconds, min=minutes, h=hours, Khrs=hoursx1000
VAR.: Minimum variation allowed.
DEF: The default value, factory set.
R1 C 23
Shows the current value on which temperature regulation is based
(set-point).
R3 2.0 20 C/F 0.5/1 1
Temperature differential cool/heat.
R4 0 10 C/F 0.5/1 0,5
Temperature dead zone.
R8 0 C/F 0.5/1 2 Auxiliary element set-point offset. 50
R9 1 C/F 0.5/1 1
Auxiliary element differential.
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HOW REGULATION PARAMETERS WORK ? :
Through R1, R3, R4, R8, R9 parameters we set the temperatures for which compressor and electrical heater will
turn on, as figure shows:
R4=0,5ºC
R3=1ºC R3=1ºC
R4=0,5ºC
R9=1ºC
R8=2ºC
22,5ºC 23,5ºC 21,5ºC 20,5ºC 24,5ºC
Electrical
heater
compressor
MODIFICATION OF SET POINT VALUE
To modify the set-point value, see page 5 on this manual.
MIN MAX UNIT VAR. DEF
VALUES
DESCRIPTION COD
S4 -12 12 C/F 0.5 0
Regulation probe calibration.
Value to be added to/subtracted from the value measured by the
temperature probe used for the control (sensor)
S6 1 15 --- 1 1
Input digital filter, filter for analogue inputs, S6=1 the fastest.
S7 0 1 --- 1 0
Unit for temperature measure:
S7=0 the temperature is visualized on ºC.
S7=1 the temperature is visualized ºF.
The table below gives the following information for each parameter.
--- --- ---
Unit is working on cooling mode
ON ON OFF OFF OFF ON
PROGRAMMING THE PARAMETERS
S8 0 1 --- 1 0
Indicates the presence of an external or internal temperature probe.
compressor
Unit is working on heating mode
Desired temperature (Set Point) R1=23ºC