Honeywell ST9420C User Manual

23
DT92E ENERGY SAVING ECO FEATURE
FINE TUNING YOUR DT92E
Changing the DT92E Installer Parameters
The DT92E has a special Installer Mode where some features can be adjusted to suit
your lifestyle or preferences – these are called Installer Parameters, and are listed in
the table below, along with a description of the options that are possible.
Your installer should set this up for you to suit your application (see CONFIGURATION
& SERVICE DATA section). However, you may wish to alter some of the settings
yourself, and this section shows you how to do this.
INSTALLER
PARAMETER
Parameter Default
Value
Options Description
Temperature
measurement offset
t0 0 -3 to 3 K Offset to measured
temperature
Upper setpoint limit uL 35 21 to
35°C
Upper set temperature
limit in °C
Lower setpoint limit LL 5 5 to 21°C Lower set temperature
limit in °C
Energy saving ECO
setpoint
ES 18 5 to 35°C Energy saving ECO set
temperature in °C
Reset parameters
to factory settings
FS 1 0, 1 Parameter will be set to 0
if any of the other param-
eter values have been
changed. Set to 1 to get
back to factory settings.
How to Exit ECO Mode
To exit ECO mode, simply press the green
ECO button again. ECO will disappear
from the display and the thermostat will
control to its previous set temperature.

Honeywell ST9420C Specifications

General

Model	ST9420C
Category	Thermostat
Display	LCD
Channels	2
Power Supply	230V AC
Mounting	Wall-mounted
Contact Voltage	230V AC
Contact Current	3A resistive, 1A inductive
Switching Type	SPDT
Type	Programmer
Programs	7-day programming
Compatibility	Compatible with most heating systems