O56002 - 04/12 - Subject to change.
© Belimo
Aircontrols (USA),
Inc.
800-543-9038
USA
866-805-7089
CANADA
203-791-8396
LATIN AMERICA / CARIBBEAN
LCD Electronic Thermostat
EXT-CF24-D202-AF, EXT-CF24-D402-AF
Maintenance mode
When the unit in “OFF” status, press “
” for 5 seconds to enter maintenance mode.
Press “
” to change over from “
disp
>
0set
>
defr
>
usp
>
lsp
”. If button is not
pressed over 10 seconds, it will return to normal mode automatically.
disp
Display selection - ambient temperature (
rt
) / setpoint (
sp
)
In maintenance mode “
disp
”, press “
,
” to select “
rt
” or “
sp
”.
“
rt
” : display ambient temperature
(factory setting)
“
sp
” : display setpoint
0set
Temperature offset adjustment
In maintenance mode “
0set
”, press “
,
” to adjust ambient
temperature reading.
-3, -2, -1,
0
, 1, 2, 3.
(factory setting “0”)
defr
Defrost - low temperature protection
In maintenance mode “
defr
”, press “
,
” to adjust.
“
0n
” = ON
“
0ff
” = OFF
(factory setting)
usp
Upper set point adjustment
(factory setting 35°C)
In maintenance mode “
usp
”, press “
,
” to adjust max. temperature
set point.
lsp
Lower set point adjustment
(factory setting 35°C)
In maintenance mode “
lsp
”, press “
,
” to adjust min. temperature
set point.
do not open
To be opened by accredited servicing agents only Electronic control - Type 2.B
action (micro-disconnection operation). Separate collection for electrical and
electronic equipment.
Wiring Diagrams
24 VAC
EXT-CF24-D202-AF
5A fuse
On-Off Control - 2 wires
EXT-CF24-D202-AF
24 VAC
5A fuse
On-Off Control - 3 wires
EXT-CF24-D402-AF
24 VAC
5A fuse
On-Off Control - 2 wires
Auto Change-Over
