Honeywell Thermostat TH8320U User Manual

Installation TH8000 Series Programmable Thermostat manual covers the following models TH8110U TH8320U TH8321U thermostat from wallplate and turn over to find model number Types Gas Warm Heat to open and close zone zone valves Heat Cool 750 thermostat contains a Lithium battery which may contain Perchlorate material call Honeywell Customer Care toll free at 1 800 468 1502 Help U S Registered Trademark 2012 Honeywell International Inc rights reserved Guide installation Separate wallplate from thermostat Mount wallplate as shown below pull to remove from thermostat screws be installed by a trained experienced technician Read damage the product or cause a hazardous condition ELECTRICAL HAZARD cause electrical shock or equipment damage Disconnect power before installation NOTICE the old control in the trash Contact your local waste management authority for regarding recycling and proper disposal options TH8000 Series supplied batteries for or backup power factory installed jumper for two transformer systems excess wire back into the wall opening Plug opening with non flammable insulation Designations Shaded areas below apply only to TH8320 TH8321 Terminal Letters Heating power Connect to secondary Pump Terminal Letters of heating system transformer Cooling power Connect to secondary of cooling system transformer Common wire from secondary side of transformer if 2 transformers stage heat relay 2nd stage heat relay stage compressor contactor 2nd stage compressor contactor Optional outdoor or remote sensor Optional outdoor or remote sensor power Connect to secondary of heating system transformer Cooling power Connect to secondary of cooling system transformer wire from secondary side of system transformer stage compressor contactor stage compressor contactor pump reset powered continuously Changeover valve for heat pumps Optional outdoor or remote sensor Optional outdoor or remote sensor Guide guide systems areas below apply only to TH8320 TH8321 System 1 transformer System 2 transformers 1 joined by jumper relay contactor Only System 1 joined by jumper relay Only System Series 20 System 1 transformer joined by jumper relay 2 relay 2 1 joined by jumper relay 1 relay 1 cooling transformer 1 heating transformer 1 relay contactor 1 joined by jumper relay Only System With Fan Only System 1 joined by jumper contactor System 2 transformers relay 2 relay 2 cooling transformer 1 heating transformer 1 relay 1 relay 1 notes below 1 Power supply Provide disconnect means and overload protection as required 2 Remove jumper for 2 transformer systems 3 Optional 4 Common connection must come from cooling transformer TH8000 Series guide pump systems areas below apply only to TH8320 TH8321 Heat Pump no auxiliary heat 1 joined by jumper Changeover valve 5 relay Heat Pump with auxiliary heat 1 joined by jumper Auxiliary Emergency Changeover valve 5 relay Heat Pump no auxiliary heat 2 relay 1 joined by jumper Changeover valve 5 1 relay Heat Pump with auxiliary heat 1 joined by jumper 2 relay Auxiliary Emergency Changeover valve 5 1 relay notes below 1 Power supply Provide disconnect means and overload protection as required 3 Optional 5 O B set to control as either O or B in installer setup 6 If L be connected 7 Heat Guide tab and mount thermostat tab pins on back of thermostat with thermostat snaps into place st set time DONE to save and exit date and time st set date st set month st set year DONE to save changes setup Press SYSTEM Press and hold two buttons the display Change required see setup TH8000 Series st to function st to setting DONE to exit save settings functions areas below apply only to TH8320 TH8321 Options factory default in bold