etc. The metal objects or electronic devices maybe
interfere with the RF communication, so maximum
distance will be shorter.
4. Do not mount onto metal wall boxes.
A. Installation, Mounting:
Caution:
Turn off DRF4 and the electrical devices (e.g. heater,
cooler) which will be connected before installation.
It is highly recommended that the installation procedure
is processed by trained personnel.
1. Installation Location:
The thermostat (Receiver and Transmitter) should be
mounted on an inner wall 1.5m above the floor in position
where it is readily affected by changes of the general
room temperature with freely circulating air. Prevent direct
exposure to sunlight; dripping or splashing area. Do not
place this unit at a location where air circulation is low, or
where it has great temperature changes (e.g. near door).
3
irrespective of the current setting temperature.
Control Off mode:
The LCD is fully turned off. The heater/ cooler is switched
off, irrespective of the current control temperature setting.
I. Jumper selection:
Delay / No Delay jumper:
Heater
Cooler
No delay
10sec
4mins
Delay
4mins
4mins
Choose the Delay option if compressor heat is
connected.
12-hours / 24-hours mode jumper:
When the 12-hours option is selected, the time is
shown in 12-hours mode. Otherwise, the time is
shown in 24-hours mode.
Heater / Cooler jumper:
Select the heater option when a heater is connected to
12
