Installation and Setup
20
homexpert
tm
by Honeywell THR840DUK Digital Thermostat
21
Installer setup
Installer settings allow you to customise how your system
works. Check the tables on pages 21-23 to see if any settings
need to be changed.
To change installer settings:
1
Press and hold the
ON/OFF
button for 5 seconds.
2
Press and hold the
p
and
q
buttons together until the
screen changes.
3
Press the
p
or
q
buttons to scroll through functions
quickly until you find one you want to change (see list on
pages 21-22).
4
To change any setting, press the
ON/OFF
button, then
press the
p
or
q
buttons until the correct value is flashing.
5
Press the
ON/OFF
button again to save your choice, then
use the
p
or
q
buttons to select another function.
To exit installer setup, press and hold the
ON/OFF
button
for 5 seconds.
25.
0
°
c
i0
se
0e
: 1
Press and hold both buttons for 5 seconds
Function
Setting
Installer setup functions
Function
Description
Setting Options
1: Ot
Minimum boiler on/off time
1 minute **
Options: 1 to 5 minutes
See page 23 for important information
2: Cr
Cycles per hour (CPH)
6 cycles per hour **
Options: 3, 6, 9 or 12
See page 23 for important information
3: Pb
Proportional band width
1.5°C **
Options: 1.5° to 3°C
4: tO
Temperature offset
0: No offset **
Options: +3° to -3°C
5: uL
Maximum temperature allowed
35°C **
Options: 21° to 35°C
6: LL
Minimum temperature allowed
5°C **
Options: 5° to 21°C
** Factory default setting
NOTE:
See descriptions of functions on page 24.
This Manual: http://www.manuallib.com/file/2598268
