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TFC 099A, User Manual

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TFC 099A User Manual Download Page 19

7.2 Output-On Delay

For safety purposes, the thermostat has an auto 20
seconds’ delay for heater to restart.

8 LOW BATTERY OPERATION

When the voltage of the battery
decrease to certain level, the low
battery indicator will be turned on
and the thermostat cannot detect
the temperature anymore.

When the battery indicator is
turning on, the batteries should
be changed as soon as possible to avoid any data loss.

18

Summary of Contents for 099A

Page 1: ...Cat No 099A Digital Programmable Thermostat for Weekday Weekend Setting User Maunal...

Page 2: ...E OF CONTENT 1 INTRODUCTION 2 2 INSTALLATION 4 3 SETTING CLOCK 11 4 SETTING PROGRAM 12 5 SLEEP OPERATION MODE 15 6 MANUAL OVERRIDE 15 7 HEATER OPERATION 17 8 LOW BATTERY OPERATION 18 9 SPECIFICATIONS...

Page 3: ...1 INTRODUCTION This thermostat can replace most common indoor resi dential thermostat and is designed to be used with elec tric gas or oil heating system 1 1 Outlook 2...

Page 4: ...ed to adapt a variety of customer needs LCD shows the NEED TO KNOW Information only which is more easy to understand 8 Changeable Programs 4 programs for weekday 2 programs each for Saturday and Sunda...

Page 5: ...peration Mode Slim Housing Design 2 INSTALLATION This thermostat has been designed for simple and quick installation requiring only a few tools CAUTION 1 The appliance can only be mounted on dry indoo...

Page 6: ...n power box in your home Read the following instructions carefully before discon necting the wires 1 Turn off the old thermostat 2 Remove the cover from the old thermostat 3 Unscrew the old thermostat...

Page 7: ...2 3 Wire Labeling 1 Disconnect and identify each wire 2 Tape the wires to the wall to keep them from slipping through the hole in the wall If the hole in the wall is larger than necessary fill it in...

Page 8: ...unting the thermostat onto the wall 2 Remove completely the front housing of the thermostat by using a screwdriver see picture 3 Mark the holes position and align the wire coming from the wall in the...

Page 9: ...the wiring diagram shown in the section 2 7 WIRING DIAGRAM 2 7 Wiring Diagram The DRT2 thermostat can be used with single stage heating system Inside the thermostat three terminals which label COM NC...

Page 10: ...ase follow the installation instruction 1 Find out the battery door at the side of the case 2 Slide the door upward to open it 3 Two old batteries would jump out 4 Take out the old batteries 5 Insert...

Page 11: ...rol temperature setting is 20 0 C The heater will be operated when the room temperature drops to 19 5 C and will be turned off when the temperature rises to 21 C 2 10 Temperature Measurement HI will b...

Page 12: ...the display will show as follows If the display is different as shown use a fine probe such as straightened paper clip to gently push the reset button 3 SETTING CLOCK 1 Press one of D H or M button to...

Page 13: ...ate respectively 6 Press R button to return to normal operation mode 7 The unit will return to normal operation mode if no key is pressed for 10 seconds 4 SETTING PROGRAM 4 1 Pre recorded Programs Pro...

Page 14: ...nd Sunday P7 8 programs 3 The program is set as a sequence P1 P2 P8 P1 4 2 Program Modification The pre recorded programs could be modified Follow the instructions shown below 1 Press P button to sele...

Page 15: ...to turn off program 2 press P button to select program 2 Then press D button Program 2 is off as shown beside Press D button again will turn on the program 7 Hold H M or button about 3 seconds to fast...

Page 16: ...nction will be paused the LCD will be blank and the relay will turn off Pressing any key to call the unit wake up 6 MANUAL OVERRIDE At the normal operation mode the current temperature setting could b...

Page 17: ...ode with the new temperature setting 6 The unit will be back to normal operation mode automatically when no button is pressed about 10 seconds 7 Program temperature can only be set in the control temp...

Page 18: ...hown 7 HEATER OPERATION 7 1 Heater On Operation The heater will be turned on by setting programs or manual override If the heater is turned on by setting programs the Program Number and the Heater On...

Page 19: ...t 8 LOW BATTERY OPERATION When the voltage of the battery decrease to certain level the low battery indicator will be turned on and the thermostat cannot detect the temperature anymore When the batter...

Page 20: ...not included 9 2 Electrical Characteristics Power Source AAA 1 5V Alkaline battery x 2 not included Switching Relay Resistive load 5A at 250VAC Inductive load 3 5A at 250VAC Clock Accuracy 60 seconds...

Page 21: ...Output On Delay 20 seconds Operating Temperature 10 C to 50 C non condensing Storage Temperature 30 C to 60 C 20...

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