Step 9. Set up temperature scale, differential, offset and
Water Panel/filter change indicators
1. Slide the Mode switch to the Off position.
2. Press and hold both the ADJUST– Up and Down buttons until “ROOM”
and “OFF” are no longer displayed.
3. °F/°C – Use the ADJUST – Up button to toggle between °F and °C. Press
the LIGHT button when desired scale has been selected.
4. Differential Setting (d1) – The unit is shipped with this set to 1(°). This
refers to how much the temperature will swing during control. Use the
ADJUST – Up or ADJUST – Down button to change this to 1°, 2° or 3°.
A higher differential will allow more temperature swing and fewer, longer
equipment cycles. Press the LIGHT button when the desired differential
has been set.
5. Second Stage Differential Setting (d2 – MODELS 8348 & 8366 ONLY) –
This setting controls how far from the first stage differential setting the
temperature will be allowed to fall/rise before initiating second stage.
11
ADJUST
Press and Hold
Simultaneously for
Three (3) Seconds
F
C
LIGHT
ADJUST
LIGHT
ADJUST
OR
ADJUST
LIGHT
ADJUST
OR
ADJUST