American Standard ACONT302, Installation And User Manual

Page 1: ...ANT This Document is customer property and is to remain with this unit These instructions do not cover all variations in systems or provide for every possible contingency to be met in connection with the installation Should further information be desired or should particular problems arise which are not covered sufficiently for the purchaser s purposes the matter should be referred to your install...

Page 2: ...s lighting ballasts and large distribution panels Failure to follow these wiring practices may introduce electrical interference noise which can cause erratic system operation All unused thermostat wire to be grounded at indoor unit chassis ground only Shielded cable may be required if the above wiring guidelines cannot be met Ground only one end of the shield to the system chassis 1 Safety 2 2 Pr...

Page 3: ... Heat Pump 1 2 F 1 7 F Emer Heat 0 6 F 1 7 F THERMOSTAT APPLICATION GUIDE Thermostat Configuration Options Thermostat Applications Maximum Stages Heat Cool Single Stage 1 No Heat Pump SS1 Gas Oil Electric Heat Only Cool Only or Heat Cool Systems 2 or 3 wire Hydronic Zone Hot Water or Steam Systems 24 Volt or Millivolt 1 1 Multi Stage 2 No Heat Pump MS2 2 2 Heat Pump 1 Single Stage Compressor Heat ...

Page 4: ...the thermostat will cause damage to the unit 4 Place base over hole in wall and mark mounting hole locations on wall using base as template See Fig 1 5 Move base out of the way Drill mounting holes If you are using existing mounting holes and the holes drilled are too large and do not allow you to tighten base snugly use plastic screw anchors to secure the base 6 Fasten base snugly to wall using m...

Page 5: ...ration required for remote sensor Call for cool No Output Cool mode 1st stage Blower Circulator fan energized on a call for cool or Fan On also energized in heating if configured for Electric Heat Installer Configuration Menu selects O or B for changeover function Set to O terminal energized in Cool Off mode Set to B terminal energized in Heat mergency mode Power closed connection for SPDT 3 wire ...

Page 6: ...Installation and User Guide 6 Part No 37 7775005 09 2020 11 HD17D1 1C EN 5 Wiring Diagrams ...

Page 7: ...American Standard Silver 302 and 303 Touchscreen Thermostat Part No 37 7775005 09 2020 11 HD17D1 1C EN 7 ...

Page 8: ... remote indoor or outdoor wired sensor FOOTNOTES 1 A TCONT302 does not include humidifier HM and dehumidifier DHM terminals AC Cooling with GAF2 S Thermostat Thermostat Indoor Caution Do not run Outdoor Remote sensor wires in the same bundle with HVAC wires Also keep away from high voltage wiring to avoid interference Y B Outdoor ...

Page 9: ...r HM and dehumidifier DHM terminals 2 Wire third party condensate overflow switches between Y of the thermostat and Y1 of the airflow control board 3 X2 is required for aux heat signal during defrost 4 Factory installed jumper 1 or 2 Stage Heat Pump with Variable Speed Furnace Caution Do not run Outdoor Remote sensor wires in the same bundle with HVAC wires Also keep away from high voltage wiring ...

Page 10: ...Installation and User Guide 10 Part No 37 7775005 09 2020 11 HD17D1 1C EN ...

Page 11: ...ze aux heat during defrost 4 Factory installed jumper Heat Pump with GAF2 S Thermostat Indoor Unit Outdoor Unit Caution Do not run Outdoor Remote sensor wires in the same bundle with HVAC wires Also keep away from high voltage wiring to avoid interference 1 1 2 4 3 G R B W1 O B L Y2 Y G Rc Rh C S HM W2 W E 6 DHM Optional remote indoor or outdoor wired sensor FOOTNOTES 1 A TCONT302 does not include...

Page 12: ...age Unit with Variable Speed Blower Thermostat Thermostat Package Unit BK X2 Y1 G R B W1 O B L Y2 Y G Rc Rh C S HM W2 W E 6 DHM Optional remote indoor or outdoor wired sensor FOOTNOTES 1 A TCONT302 does not include humidifier HM and dehumidifier DHM terminals HP Package Unit with Non Variable Speed Blower Thermostat Thermostat Package Unit Caution Do not run Outdoor Remote sensor wires in the same...

Page 13: ...y pad or to replace UV lamp 6 COPY key or INSTALLER CONFIG key 7 CLEAN DISPLAY key allows 30 seconds to wipe off the display or ADVANCE DAY key for programming 8 Used in programming to set time and in configuration menu to change selections 9 Hold Until indicates the time when a temporary hold period will end 10 Hours and Days displays during steps in installer configuration 11 The words Hold At a...

Page 14: ...or HP2 is selected above 4 Days 7 P 5 or 0 Programs per week 7 days 5 1 1 days or non programmable 5 4 PS 2 Programs per day 4 Morning Day Evening Night 2 Day Night Not available if 4 is 0 6 Cool Off Heat Auto Cool Off Heat Heat Off Heat Cool Off Auto Off System switch configuration in non heat pump mode Cool Off Heat Em Auto Cool Off Heat Em Off Em Auto System switch configuration heat pump mode ...

Page 15: ...POINT ON REFER TO THE SPECIFIC MODEL FOR THE CORRECT SCREEN REFERNCE NUMBER N A 38 80 bP 79 20 Selects Blower balance point Selection of 80 disables this feature This item appears if HP1 or HP2 is selected and outdoor sensor is installed and enabled N A 39 OFF Hd on Selects Humidity Display alternate with time N A 40 Humidity 00 Room Humidity 20 LO 20 HI Selects Humidity Display adjustment N A 41 ...

Page 16: ...r up to five minutes 13 Select Continuous Display Lighting dL In low lighting conditions display backlight improves the display contrast 14 Select Temperature Display Adjustment 5 LO to 5 HI This allows you to adjust the room temperature display by 5 F to 5 F in 1 steps Your thermostat was accurately calibrated at the factory however you have the option to change the display temperature value to m...

Page 17: ...orces additional heat stages to come on quickly when is used to raise the temperature a few degrees above the room Select this setting if you want the heat to increase quickly when you manually raise the temperature Selecting FA OFF allows the thermostat to calculate an optimal time to bring on additional stages of heat When the is used to raise the setting above the room temperature additional he...

Page 18: ...ier is controlled by the thermostat It is recommended for use on flow through humidifiers only The display indicates CH Cycle Humidifier with the default indicating OFF Pressing the or keys will toggle the display from OFF to On and back to OFF When CH is enabled the humidifier will cycle to turn off for 10 minutes after it has run for 10 minutes The blower and or furnace will continue to run duri...

Page 19: ...ey to select EM EM Heat Mode will flash on the display 8 Press to adjust thermostat setting above room temperature The Emergency heating system will begin to operate The display will show System On flashing EM Heat Mode and Heat to indicate that the Emergency system is operating 9 Adjust temperature setting to 3 above room temperature Any additional stages of auxiliary heat should begin to operate...

Page 20: ...installer menu Then press Set Time once to indicate hour AM or PM designation in clock display 2 Press and hold either the or touch key until you reach the correct hour and AM or PM designation 3 Press Set Time again to display minutes only in clock display 4 Press and hold either the or touch keys until you reach the correct minutes 5 Press Set Time once again to display year 6 Press either the o...

Page 21: ...system switch area indicating the active mode being programmed You can switch to the other mode by pressing the system switch at any time 3 The top of the display will show the day s being programmed The time and set at temperature are also displayed Morning will also be displayed to indicate the period 4 Press or key to change the temperature to your selected temperature for the 1st heating perio...

Page 22: ...meters 300 feet Terminals S and on the terminal block allow connection of the remote sensor The thermostat must have 24 VAC Common connection to terminal C for the remote sensor to operate The remote sensor can be enabled or disabled in the Installer Configuration menu item 29 When remote sensor Remote is selected Off factory default no remote sensor is enabled When remote sensor is selected On th...

Page 23: ...lected on the thermostat can monitor the outside temperature using remote sensor F145 1378 or use software logic to determine when to switch to gas heat and shut down the compressor This eliminates the need for a fossil fuel kit The user selectable temperature is called the dual fuel temperature setpoint dF and is set in the Installer Configuration menu items 33 or 34 With outdoor remote sensor in...

Page 24: ...tantly 1 Possible short in wiring 2 Possible short in thermostat 3 Possible short in heat cool fan system 4 FAN Switch set to Fan ON Check each wire connection to verify they are not shorted or touching together No bare wire should stick out from under terminal block Try resetting the thermostat as described above If the condition persists the manufacturer of your system or service person can inst...