PR® TAG This manual covers the following models: * T621-2 Thermostat Applications Guide Description Gas or Oil Heat Electric Fum ace Heat Pump (No Aux. or Emergency Heat) Heat Pump (with Aux.
Wall locations The thermostat should be installed approximately 4 to 5 feet above the floor. Select an area with average temperature and good air circulation.
Totting to know your thermostat Ems Es ®@ Fan Switch ®@ system Switch ® Easy Change Battery Door BEE ® Set point Buttons Removing the private label badge @ rep Indicates the current room temperature. Low Battery Indicator: Replace batteries when indicator is shown. System operation indicators: ON will display when the COOL, HEAT or Emergency Heat is on. Displays the user delectable set point temperature. +1 will appear in the display when the auxiliary heat Is active.
Caution: Electrical Hazard Failure to disconnect the power before beginning to install this product can cause electrical shock or equipment damage. Mercury Notice: All of Pro's products are mercury free. However, if the product you are replacing contains mercury, dispose of it properly. Your local waste management authority can give you instructions on recycling and proper disposal. For vertical mount put one screw top and one screw bottom. For horizontal mount put one screw left and one screw right.
Caution: Electrical Hazard Failure to disconnect the power before beginning to install this product can cause electrical shock or equipment damage. Warning: All components of the control system and the thermostat installation must conform to Class Il circuits per the NEC Code. Wiring 1. If you are replacing a thermostat, make note of the terminal connections on the thermostat that is being replaced. In some cases the wiring connections will not be color coded.
Terminal Designations We Auxiliary heat relay Stage 2 heat peas Compressor relay Stage 1 heat and cool Fan relay Heat pump changeover valve energized in cooling Transformer power IRE ERE Common wire from system transformer Heat pump changeover valve energized in heating E Emergency heat relay Mote: In many systems with no emergency heat relay a jumper can be installed between E and W2. Fahrenheit/Celsius Display Mass a EEE EE en Select F or C with the jumper pin on the i back of the thermostat.
Technician Setup Options This thermostat has 4 different setup configurations. To setup the thermostat for your particular application: 1. Select COOL, HEAT, EmH, or OFF 2. Press and hold and button for 3 seconds. This 3 second delay is designed so that homeowners do not accidentally access the installer settings.
Mount Thermostat Align the 4 tabs on the sub base with corresponding slots on the back of the thermostat, then push gently until the thermostat snaps in place. = Battery Installation Battery installation is optional if thermostat is hardwired (C terminal connected). Insert 2 AA Alkaline batteries (included). Simple operating instructions are / found on the back of the battery door.
Specifications The display range of temperature The control range of temperature .. 41°F to 95°F (5°C to 35°C) . 44°F to 90°F (7°C to 32°C) Load rating 1 amp per terminal, 1.5 amp maximum all terminals combined Display accuracy x 1°F Swing {cycle rate or differential) Heating is adjustable from 0.2°F to 2.0°F Cooling is adjustable from 0.2°F to 2.