homexpert THR870CUK User Manual page 16

Installation and Setup
Installer setup functions — System settings
Enter Installer Setup (see page 27), then press > for access to system settings
Function Description
1: Ot Minimum boiler on time
2: Cr Cycles per hour (CPH)
3: EH Electric heat
4: HC Heating/Cooling options
5: PE Pump exercise
See page 27 to change these settings. Always press OK after changing any setting.
** Factory default setting
Setting Options
1 minute **
Options: 1 to 5 minutes
See page 31 for important information
6 cycles per hour **
Options: 3, 6, 9 or 12
See page 31 for important information
0: Resistive loads <3 A **
1: Resistive loads 3 to 8 A
See page 31 for important information
0: No central cooling system installed **
1: Allows switching between heating and cooling systems
Thermostat cannot control cooling unless you select 1
0: Off **
1: On (turns on pump periodically to keep equipment
functioning properly)
30
Customised settings for your system
Your heating system Changes required
Standard gas boiler None
(<30kW)
Zone Valve None
Oil boiler System setting 1: Ot
System setting 2: Cr
Thermal actuator System setting 2: Cr
Electric heating System setting 2: Cr
System setting 3: EH
Your cooling system Changes required
Heat pump/air conditioner System setting 1: Ot
System setting 2: Cr
System setting 4: HC
Fan coil System setting 4: HC
See page 27 to change these settings. Always press OK after changing any setting.
homexpert by Honeywell THR870CUK Programmable Thermostat
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Setting Options
No change
No change
Set to 4 minutes
Set to 3 CPH
Set to 12 CPH
Set to 12 CPH
Set to 1 if load > 3A
Setting Options
Set to 4 minutes
Set to 3 CPH
Set to 1
Set to 1
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