TFC Group IHT-Digi 20 User Manual
digi IHT
Immersion Heater Timer
page
OK
reset
Prog.
P0x
pre
P0x
prog
Menu
+1h
P--
prog
del
Short description, safety remarks ........................................................... 3
Installation ..........................................................................................................4
Program structure ........................................................................................... 6
Symbols, keys.................................................................................................... 8
Setting 24h or am/pm clock, time, weekday .....................................9
Programs ...........................................................................................................10
Selection of fixed programs P01 to P03 .............................................11
Changing fixed programs P01 to P03 ..................................................12
User-defined program, P-- ........................................................................
Deleting programs ........................................................................................
Menu ....................................................................................................................17
Summer/winter time key ...........................................................................17
Automatic operation / fixed ON / fixed OFF .....................................18
Technical data .................................................................................................19
2
15
16
Short description Immersion heater Timer digi IHT
Time control switch for electrical loads; custom designed for water
heating elements, up to the rated current (see page 19).
Safety instructions
· Installation must be carried out by a qualified electrician and
conform to current IEE regulations.
· Mains supply must be suitable fused and provision made for
Class A circuit disconnection. Ensure earth continuity is maintained
by use of the earth parking terminal.
· Time control is suitable for fixed wiring only.
3
4
A
B
DC
1
2
3
4
5
6
7
13
15
17
19
21
23
OK
Menu
+ 1h
Res.
+ –
1. Switch off electrical supply to
the time control.
2. Loosen screws (A) and separate
housing from timer base.
Pull timeswitch module off
backplate.
Offer backplate to mounting
location, mark and drill in fixing
points B, C & D.
Fix backplate to wall. Push
timeswitch module on to
backplate, ensuring no
pressure is exerted on the
LCD display and ensure good
engagement with the tab
terminals.
Connect wiring as per wiring
3.
diagram securing cables /
cords with clamp provided.
NB mains supply, using fixed
wiring does not need to pass
through clamp.
4. Cut out cable entries on
underside of housing as
required.
5. Re-fit housing to timer base
and switch on electrical supply.
3 41
M
~
Connections:
Mains supply Immersion heater
1 Neutral 1 Neutral
3 Live 4 Live
Earth Earth
Link to 3 provided
5
Mains supply
(input)
Immersion heater
(output)
6
Reset (first installation)
Review / adjust
Menu
Set time: Day
Monday blinking, using +/- to select, then OK
Set time: Minute
Minute blinking, using +/- to select, then OK
Set time: Hour
Hour blinking, using +/- to select, then OK
Set time: Format 24h or am/pm
24h blinking, using +/- to select, then OK
Select Program:
P01 / P02 / P03 or P--
Using +/- to select, then OK
to set ON/OFF times
or
press Menu to escape
further programming
OKMenu
P01-03, P-Setting switching times:
First free memory location
blinks.
Press “-“ to go back one
memory location.
Press OK for setting the
switching times.
P-Setting switching times:
First free memory location
blinks.
Press “-“ to go back one
memory location.
Press OK for setting the
switching times.
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