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Summary of Contents for th511od

Page 1: ...h efficiency furnaces heat pumps steam and gravity Heat only includes power to open and power to close zone valves Series 20 and normally open zone valves Heat only with fan Cool only 750 mV heating systems Changeover Manual or auto changeover selectable System Setting Heat Off Cool Auto Fan Setting Auto On MERCURYNOTICE tf this control is replacing a control that contains mercury in a sealed tube...

Page 2: ...fts or dead spots behind doors and in corners Hot or cold air from ducts Radiant heat from sun or appliances Concealed pipes and chimneys Unheated uncooled areas such as an outside wall behind the thermostat Separate Wallplate from Thermostat 1 Separate the wallplate from the thermostat See Fig 2 THERMOSTAT Fig 2 Separate wallplate from thermostat Install Wallplate See Fig 3 Mount the thermostat h...

Page 3: ...ire hole 3 Plug the wail opening with nonflammable insulation to prevent drafts from affecting the thermostat Fig 4 Insert wires into terminal block Table 2 Terminal designation descriptions Terminal Designation Description Rc see Note t Power for cooling connect to secondary side of cooling system transformer R see Note 1 Power for heating connect to secondary side of heating system transformer Y...

Page 4: ...nventional 1H 1C system with one transformer Z_ CONf GURE SYST_ M YPE FO dEAF PUMPAND CHANGEOVER VALVE TOE_THER O OR 8 _N THE _NSTALLER SETUP M220_0 Fig 8 Typical hookup of 1H 1C heat pump A POWER SUP _LY PROV DE D SCONNEC MEANS AND OVERLOAD Fig 7 Typical hookup of conventional 1H 1C system with two transformers IA _ POWER SUPPLY PROV DE D_SCONNEC MEANS AND Fig 9 Typical hookup of heat only system...

Page 5: ...ERMOSTAt WRNG TERM NALS Z_ sOWER SUPPLY PROV DE DISCONNEC r MEANS AND L1 Hor L2 Z_ CON GURE SYSTEM TYPE TO HEAr ONLY N THE NSTALLER SE TUP t 4220 _ Fig 11 Typical hookup of heat only Series 20 system THERMOSTAT WRNG TERM NALS R L1 C 04or Z_ _OWE _ SUPI LY _ _OV DE OISCONNECT MEANS AND OVERLOAD PROTECTION AS REQU RED A OPTIONAL 24 VAC COMMON CONNECT ON Fig 13 Typical hookup of a heat only system wi...

Page 6: ...transformer to the C screw terminal of the thermostat wallplate Leave the metal jumper in place between Rc and R T vo Transformer System Connect the common side of the cooling transformer to the C screw terminal of the thermostat waltplate Remove the metal jumper between Rc and R Installing Batteries Install two AAA alkaline batteries on the back of the thermostat as marked on the battery holder S...

Page 7: ... Fig 17 Configure Installer Setup Fig 16 Enter Installer setup Release the Up and Fan buttons when the display on the thermostat matches the display in Fig t7 3 See Fig 18 to review how the thermostat buttons are used during Installer Setup See Table 3 for the Installer Setup Numbers and Settings NS FALLER SE U NSFALLER SE U AND SAVES YOUR SErViNGS NUMBER M22 44 Fig 18 Review thermostat buttons us...

Page 8: ...oning Factory Setting 1 Heat pump 2 Heat only two wire systems or power to open and power to close zone valves or normally open zone valves 3 Heat only with fan 4 Cool only 0 Changeover valve O B terminal energized in cooling Factory Setting 1 Changeover valve O B terminal energized in heating 0 Gas or oil furnace equipment controls fan in heating Factory Setting 1 Electric furnace thermostat cont...

Page 9: ...ter Installer System Test See Fig 20 to review how the thermostat buttons are used during the Installer System Test See Table 4 for available Installer System Tests Table 4 Installer System Tests System Test Number Test Type System Status Number and Description 10 Heating System Test 1 Heat turns on When installer Setup Number 1 is set to 1 or Installer Setup Number 3 is set to 1 the fan turns on ...

Page 10: ...mum OffTimer Compressor Protection The TH5110 has an adjustable Minimum Off Timer that can be set from zero to five minutes Factory Setting five minutes The Minimum Off Timer can be bypassed through the Installer System Test or it can be bypassed permanently by setting the Minimum Off Timer to 0 minutes in the installer Setup The Minimum Off Timer is activated after the compressor turns off If the...

Page 11: ... side of the transformer between power and common If voltage is not present check the cooling equipment to find the cause of the problem Check for 24 Vac between the cool terminal Y and transformer common If 24 Vac is present the thermostat is functional Check the cooling equipment to find the cause of the problem Loose or broken wire connection Check for 24 Vac between the cool terminal between t...

Page 12: ...geover Only Setting 2 Setting 0 or Auto Changeover Setting 1 Heat On is not in the System setting is not set to Heat and or Set the system setting to Heat and set the display the temperature setting is not set above temperature setting above the room the room temperature temperature Cool On is not in the System setting is not set to Cool and or Set the system setting to Cool and set the display th...

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