PI – 03/04 Modulating Digital Thermostat
-7-
Note : Default setting is 30ºC.
Program 3 : Type of valve/damper
There are several types of valve/damper subject to the types actuating, feed back and direction. Program the
thermostat to match with the type of valve/damper used.
Press △key until the first digit is 3.
Press ▽key until the second digit is as required. See table below.
Note : DA = Direct actuating, RA = Reverse actuating
Factory setting is 3.8 (0-10 V actuating, No feed back).
Program 4 : Setting of Calculating position cycle
This program is used to select interval time of position calculation for valve control. It can be set in a range
of 30-120 seconds. The control will delay the next operation of the valve/damper until the current operation
is completed.
Press △key until the first digit is 4.
Press ▽key until the second digit is as required. See table below.
Note : Default setting is 40 seconds..
Program 5 : K
p
setting
K
p
is the proportional factor that control the opening of the valve/damper. The higher K
p
, the faster the room
temp. is brought to the set temp. However the fluctuation of the room temp. is also higher. Then K
p
shall be
set properly.
Press △key until the first digit is 5.
Press ▽ key until the second digit is as required. See table below.