Installation, Operating & Maintenance Manual
19
10/25/2004
Parameters for configuring standard operation:
Code
Range
Default Unit
Description
A0 (1)
0 to 4
2
Operating mode
0=ON/OFF control
1=modulating
2=humidity control
3=humidity control with hi-limit control
4=steam baths
A1
0, 1
0
Unit of measure
0=°C, kg/h
1=°F, lbs/hr
A2
0 to 4
0
Type of room sensor; not
accessible in ON/OFF
mode (A0=0)
0=0 to 1V; 1=0 to 10V; 2=2 to 10V; 3=0 to 20mA;
4=4 to 20mA
A3 (2)
0 to A4
0
%RH, ºC Room sensor minimum
Accessible only in control mode (A0=2, 3 or 4)
Used for scaling sensors
A4 (2) A3 to 255
100 %RH, ºC Room sensor maximum
A5 -10.0 to 10.0
0
%RH, ºC Room sensor offset
A6
0 to 4
0
Type of outlet sensor;
accessible only in
humidity control with
outlet limiting (A0=3)
0=0-1V; 1=0-10V; 2=2-10V; 3=0-20mA;
4=4-20mA
A7
0 to A8
0
%RH Hi-limit sensor minimum
Accessible only in humidity control with outlet
limiting, (A0=3)
A8
A7 to 100
100
%RH Hi-limit sensor maximum
A9 -10.0 to 10.0
0
%RH Hi-limit sensor offset
(1): when accessing parameter A0, parameters P2, P3, P7 and St are automatically reset to the corresponding
default value.
(2): see WARNING to the side of Fig. 7.1.
