Meaco LAE 2 stage controller
Control Principles
For the purposes of these instructions we are assuming that you wish to
achieve 55%RH ±5%RH.
If you require a different set point then you can changes the settings in steps
4
and
9
. If you require closer control then simply change the settings
accordingly in steps
6
and
11
.
The humidifier will come on at 50%RH and below and turn off at 55%RH.
The dehumidifier will come on at 60%RH and above and turn off at 55%RH.
This is known as the hysteresis.
If you find that either unit keeps on turning on and off too quickly you can put
in a time delay of between 1 and 30 minutes at, stages
7
,
8
,
12
and
13
. In
the procedure below, this is set as 1. The relays within this controller can
switch loads up to 12 amps for relay 1 and 7 amps for relay 2. Larger loads
should be switched using this controller with a contactor in line.
Controller Set-up
1.
Plug controller in and switch on the power.
2.
Press both
and
buttons for 5 seconds.
3.
"SCL" should now be displayed, you are ready to begin.
4.
Press
three times to display "1SP", then press and hold
and use the
buttons to enter 55.0 for the
set point. When you release
1cñ will be displayed.
5.
Press button
once, 1ch should be displayed, press and hold
and use
to select ‘ref’. When you
release
1hy will be displayed.
6.
Press and hold
and use
to enter 5 for the hysteresis.
7.
When you release
1tO will be displayed, press and hold
and use
to set to 1 and this is the
minimum off time in minutes.
LAE Humidity
Controller