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Honeywell DT92, Manual, Page: 16 / 17

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Honeywell DT92 Manual Download Page 16

DT92 WIRELESS DIGITAL ROOM THERMOSTAT

16

To enter Installer Mode: 

a. Put DT92 into off/standby mode by pressing and

holding the 

off/standby

 button for 2 seconds.

b. Now press and hold both 

▲

 and 

▼

 temperature

adjustment buttons for 3 seconds, until the
display shows the word “Inst”.

c. Press 

the 

▲

 button to get to the first parameter

Ot. The parameter code is shown on the display
separated by a colon from the parameter value.

To select and change a parameter: 

d. Use 

the 

▲

 and 

▼

 buttons to move from one

parameter to another.

e. Press 

the 

off/standby

 button to select the

parameter value, ready to change

f.

Use 

the 

▲

 and 

▼

 buttons to adjust the

parameter value. When the correct value is
flashing, confirm the selection by pressing the

off/standby

 button again, returning to the

parameter menu.

To exit Installer Mode: 

g. Press and hold the 

off/standby

 button for 3

seconds

Note: 

Installer Mode will exit automatically after 10 

minutes if no buttons are pressed.

 

INSTALLER MODE - FLOWCHART 

Parameter

Value

ES parameter

Only available 

on DT92E model

Summary of Contents for DT92

Page 1: ...isplay and easy to read characters Display shows room temperature with option to inquire about setpoint 5 C to 35 C setpoint range with 0 5 C increments using and buttons Off standby button allowing manual switch off with frost protection active Adjustable off standby setpoint 5 C to 16 C or DT92 can be set to off completely Room thermostat is battery powered by 2 x AA LR6 alkaline cells giving up...

Page 2: ...02 EN55014 1 2006 EN55014 2 1997 ETSI EN300 220 3 ETSI EN301 489 3 WEEE RoHS compliant TEMPERATURE CONTROL Sensing element 10K 25 C NTC thermistor Temperature setting range 5 C to 35 C setpoint range in 0 5 C increments Control form Self learning TPI Fuzzy Logic algorithm Proportional band 1 5 C adjustable up to 3 C in 0 1 C increments Minimum on off time 1 minute adjustable up to 5 min in 1 min i...

Page 3: ...ry This means they will recognize and communicate with each other as soon as they are powered up The complete device is therefore ready for immediate installation CONTROLS DISPLAY LAYOUT battery low warning fault indicator setpoint indicator off standby indicator off standby button temperature display frost protect indicator heating demand indicator ECO mode countdown timer ECO button ECO countdow...

Page 4: ...l between parameters and to make changes to their values MAIN FEATURES 2 Way RF Communications RF communications between the room thermostat and the relay box is 2 way making it more efficient and reliable and allowing the room thermostat to display information from the relay box such as actual relay status or communications loss Signal Strength Test Mode Another benefit of 2 way RF is to allow th...

Page 5: ...ork the 2 units must be reset and bound to each other by following the procedure for Binding Re binding 4 Take the DT92 thermostat to the proposed mounting location and initiate the Signal Strength Test This will indicate if the thermostat is suitably positioned to provide a reliable signal for the relay box If the signal strength is too low the thermostat must be repositioned 5 When a suitable po...

Page 6: ...ROOM THERMOSTAT 6 a Boiler b Boiler potential free connection c Zone valve d Air conditioner WIRING CONNECTIONS a b c d Note BDR91 Relay Box requires a permanent mains power supply Completing the BDR91 Relay Box Installation ...

Page 7: ...nication Test to confirm the BDR91 relay box is wired correctly and that both devices are bound linked to each other 2 3 m RF COMMUNICATION TEST Initiate RF Communication Test by the following sequence of actions applied to the DT92 thermostat If green LED does not flash units are not linked and must be bound together again If green LED flashes every 6 seconds units are correctly bound and a suita...

Page 8: ...ion SIGNAL STRENGTH TEST The Signal Strength Test is used to find a suitable position for the DT92 thermostat such that the signal received by the BDR91 relay box is high strength This will optimize system performance The BDR91 relay box measures the strength of the signal received from the room thermostat and upon request sends this measurement back to the room thermostat using the 2 way RF commu...

Page 9: ...DT92 WIRELESS DIGITAL ROOM THERMOSTAT 9 TEST AND BINDING FLOWCHART Mounting the DT92 Room Thermostat Wall mounting Optional table stand Completing the installation Press for 5 seconds to exit any mode ...

Page 10: ... around 1m 2 Reset stored data in relay box 3 Put relay box into binding mode 4 Reset stored data in room thermostat 5 Put room thermostat into binding mode 6 Bind room thermostat to relay box Reset Stored Data in Relay Box Press and hold the push button for 15s to reset the stored data in the BDR91 relay box The red LED will give a brief flash every second to verify reset has happened Put Relay B...

Page 11: ...t Put Room Thermostat into Binding Mode Bind Room Thermostat to Relay Box With both units in binding mode pressing the off standby button on the room thermostat will bind them together To verify it is now bound the red light on the relay box will immediately stop flashing After about 5 seconds the room thermostat will come out of binding mode and go back to off mode ...

Page 12: ...building the two products should communicate reliably within a 30m range It is important to take into consideration that walls and ceilings will reduce the RF signal The strength of the RF signal reaching the Relay Box depends on the number of walls and ceilings separating it from the room thermostat as well as the building construction the diagram below illustrates an example of typical signal st...

Page 13: ...rent relay operation The green LED will indicate the relay position Loss of RF Communications If RF communications is lost for whatever reason the BDR91 relay box will operate in failsafe mode as set in the Installer Mode and the red LED will illuminate The DT92 room thermostat will flash the RF symbol until communications are restored 92 90 27 90 30 5 ...

Page 14: ...e where it will control at this predefined temperature for as long as the user wishes This temperature can be set from 5 C to 35 C Heating or Cooling operation DT92 can be used for heating or cooling applications If heating cooling changeover is selected the thermostat can be manually switched from heating to cooling and back again by pressing and holding the and buttons together for 3 seconds in ...

Page 15: ...nications LC 0 switch OFF 1 operate at 20 ON 0 Enable HR80 window open function H0 0 disable 1 enable 0 Enable HR80 local override HL 0 disable 1 enable 1 Reset parameters FS 0 1 1 factory settings In cooling mode the off standby setpoint defaults to OFF Only required if system contains HR80 programmable radiator valves Specific Applications Setting What requires to be changed Cycle s hour Minimum...

Page 16: ...r value To select and change a parameter d Use the and buttons to move from one parameter to another e Press the off standby button to select the parameter value ready to change f Use the and buttons to adjust the parameter value When the correct value is flashing confirm the selection by pressing the off standby button again returning to the parameter menu To exit Installer Mode g Press and hold ...

Page 17: ...have this switched on all the time even when the house is occupied 5 Do not programme excessive heatup times for the central heating If the occupier is out of the house or still in bed much of this heating would be unnecessary 6 In the evening when the house is up to temperature it is often possible to switch the heating off up to an hour before going to bed without any noticeable reduction in com...

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