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Saswell T21STK-0, Operating Instruction

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Saswell T21STK-0 Operating Instruction Download Page 27

27

Mark: RESET function.

This function can help operator to recovery system when fault happened ,

display outoforder or system halted. Please use a pin to insert in button
RESET hole till sounded click, then loosen it. Switch on thermostat and
observe it, if there still have troubles, please don’t hesitate to contact with local
agency for warranty.

Summary of Contents for T21STK-0

Page 1: ...1 OPERATING T21STK 0 INSTRUCTION...

Page 2: ...ible with heat pump system Installation and Operation Manual Specification Power Supply 20VAC 30VAC 50 60HZ or Battery powered Terminal Load 1 0A per terminal 3 0A maximum total load Set Point Temp Ra...

Page 3: ...re set temperature and current time simultaneously Fan switch with ON and AUTO functions Permanent user setting retention during power loss No batteries are required Operates from 24VAC or from 2 size...

Page 4: ...e information in this manual before installing this thermostat Use a professional contractor to install this thermostat This is a 24VAC low voltage thermostat DO NOT INSTALL ON VOLTAGES HIGHER THAN 30...

Page 5: ...dicates the low battery message Change the Air Filter when the Filter Change Icon begins blinking Use this thermostat only as described in this manual REMOVE THE OLD THERMOSTAT WARNING Electrical Shoc...

Page 6: ...the cover of the old thermostat This should expose the wires 4 Label the existing wires from the existing thermostat before removing 5 After labeling the wires remove the wires from the wire terminals...

Page 7: ...7 INSTALL THE THERMOSTAT ATTACH THERMOSTAT BASE TO WALL PULL THE COVER OFF THE BASE Figure 1...

Page 8: ...e heating and cooling system by removing the fuse or switching the appropriate circuit breaker off 2 Place the system switch HEAT OFF COOL in the OFF position 3 Place the FAN ON AUTO switch in the AUT...

Page 9: ...against the bottom of the base and adjust until level then tighten the screws Leveling is for appearance only and will not affect thermostat operation 9 Insert stripped labeled wires into matching wir...

Page 10: ...artment The thermostat will operate from 2 size AA alkaline batteries or 24VAC power When operated from 24VAC power your thermostat will maintain time and continuously display the temperature during a...

Page 11: ...to energize the fan on a call for heat If your system is an electric heat or heat pump that REQUIRES the thermostat to turn on the fan on a call for heat place the fan option switch in the ELEC posit...

Page 12: ...perated from batteries only the LCD display backlight will be lighted less than 5 seconds after each button pressed when backlight option are set to 2 or 3 If the battery icon on the display is flashi...

Page 13: ...ypical wiring diagram for heat cool 5 wire two transformer system In heat pump system first you must select configuration menu 3 item Or the Y terminal would not activated In heat pump system W Y term...

Page 14: ...properly contact a qualified service person Turn on power to the system Fan Operation Move the system switch to the OFF position If your system does not have a G Fan terminal connection skip to the He...

Page 15: ...iguration menu see configuration menu item 2 the thermostat will call for heat at 0 5 F 0 5 C below set point and turn off at set point When the SL ow heating cycle rate is selected the thermostat wil...

Page 16: ...menu see configuration menu item 2 the thermostat will call for cooling at 0 5 F 0 5 C above set point and turn off at set point When the SL ow cool cycle rate is selected the thermostat will call fo...

Page 17: ...17 operate properly the thermostat is installed correctly THERMOSTAT LCD DISPLAY Figure 3...

Page 18: ...s or lowers the temperature setting 2 Selects options in the configuration menu 3 OFF mode Hold the down button enter into clock setting mode OFF mode Fan control switch On Auto System control switch...

Page 19: ...to turn the system off just move the SYSTEM switch to the OFF position and the FAN switch to the AUTO position 2 Time and day setting Move the SYSTEM switch to the OFF position then press and hold th...

Page 20: ...eview Move the SYSTEM switch to the HEAT or COOL position then press and hold the and buttons for 5 seconds to review filter running days To exit the review menu press the or buttons one time Or If no...

Page 21: ...has been reset and still does not function correctly contact your heating cooling service contractor 1 Select cooling cycle rate The FA setting is used to produce shorter cooling cycles The SL setting...

Page 22: ...t to your personal preference FA cycles the system at a 0 5 F 0 5 C differential and SL cycles the system at 1 5 F 1 5 C 3 Select system heating type Users can select the system heating type according...

Page 23: ...y the LCD display backlight will be illuminated less than 5 seconds after each button pressed when backlight option are set to 2 or 3 Options 2 3 will operate the same when terminal C is not connected...

Page 24: ...adout Changes the display readout to Centigrade or Fahrenheit as required 7 Select temperature recalibration This feature allows you to adjust the displayed room temperature up to 4 higher or lower Yo...

Page 25: ...u to set certain thermostat operating characteristics to your system or personal requirements Move the SYSTEM switch to the OFF position then press and hold the and buttons for 5 seconds to enter the...

Page 26: ...26 no buttons are pressed within 2 minutes the thermostat will exit the configuration menu The configuration menu chart summaries the configuration options An explanation of each option follows...

Page 27: ...tem when fault happened display outoforder or system halted Please use a pin to insert in button RESET hole till sounded click then loosen it Switch on thermostat and observe it if there still have tr...

Page 28: ...28...

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