| Description | |
| Gas or Oil Heat | Yes |
| Electric Furnace | Yes |
| Heat Pump (No Aux. or Emergency Heat) | Yes |
| Heat Pump (With Aux. or Emergency Heat) | Yes |
| Multi-Stage Systems | Yes |
| Heat Only Systems | Yes |
| Heat Only Systems – Floor or Wall Furnace | Yes |
| Cool Only Systems | Yes |
| Millivolt | Yes |
A trained, experienced technician must install this product.
Carefully read these instructions. You could damage this product or cause a hazardous condition if you fail to follow these instructions.
The thermostat should be installed approximately 4 to 5 feet above the floor. Select an area with average temperature and good air circulation.
Do not install thermostats in locations:
Installation Tip
Pick an installation location that is easy for the user to access. The temperature of the location should be representative of the building.
For vertical mount put one screw on the top and one screw on the bottom.
For horizontal mount put one screw on the left and one screw on the right.
Installation Tip: Electrical Hazard
Failure to disconnect the power before beginning to install this product can cause electrical shock or equipment damage.
Mercury Notice
All of our 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 or you can mail the thermostat to the address on the warranty section for proper disposal.
Mount Thermostat
Align the 4 tabs on the subbase with corresponding slots on the back of the thermostat, then push gently until the thermostat snaps in place.
Battery Installation
Battery installation is recommended even if the thermostat is hardwired (C terminal connected). When the thermostat is hardwired and batteries are installed, the thermostat will activate a compressor delay of 5 minutes when the thermostat detects a power outage from the hardwired power supply.
Important:
High-quality alkaline batteries are recommended. Rechargeable batteries or low-quality batteries do not guarantee a 1-year life span.
The switch converts the thermostats between conventional and heat pump operation.
Heat Pump: Configures the thermostat for heat pump operations.
Conventional: Configures the thermostat for conventional operations.
Conventional/Heat Pump Switch
Gently slide a screwdriver into the bottom edge of the badge. Gently turn the screwdriver counterclockwise. The badge is held on by a magnet in the well of the battery door. The badge should pry off easily. DO NOT USE FORCE.
All of our thermostats use the same universal magnetic badge. Visit the company website to learn more about our free private label program.
NOTE: The compressor delay feature is active if ON is flashing. The compressor will not turn on until the 5 minute delay has elapsed.
Important
The low battery icon is displayed when the AA battery power is low. Whenever the thermostat detects low battery voltage from the AA batteries, the low battery icon will begin flashing on the screen for 21 days (if the batteries are not changed). If the batteries are not changed 22 days after the thermostat detects low battery voltage, the thermostat screen will only show the flashing battery icon until buttons are pressed. If the batteries are not changed 43 days after the thermostat detects low battery voltage, the thermostat screen will only show the flashing battery icon until buttons are pressed and the set points will offset to 85°F/29°C in cooling and 55°F/13°C in heating. At this stage, set point changes can be made temporarily but, the set points will change back to defaulted values after a 4-hour period. The thermostat will continue to perform this low battery flashing, temperature offset condition until the internal voltage threshold is reached. When the thermostat’s internal voltage threshold is reached, all relays will be opened and the thermostat will become inoperable until new batteries are installed.
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 II circuits per the NEC Code.
Installation Tip
Do not overtighten terminal block screws, as this can damage the terminal block. A damaged terminal block can keep the thermostat from fitting on the sub-base correctly or cause system operation issues.
Max Torque = 6in-lbs.
Heat Pump System 1 HEAT 1 COOL / 2 HEAT 1 COOL Conventional System 1 HEAT 1 COOL / 2 HEAT 1 COOL
| R | Transformer Power | Transformer Power |
| C | Transformer Common | Transformer Common |
| B | Changeover Valve Energized in HEAT | Energized in HEAT |
| O | Changeover Valve Energized in COOL | Energized in COOL |
| G | Fan Relay | Fan Relay |
| W/E | First Stage of Emergency HEAT | First Stage of HEAT |
| W2 | Second Stage of HEAT/ EMERGENCY HEAT | Second Stage of HEAT |
| Y | First Stage of HEAT and COOL | First Stage of COOL |
Download Manual:
Pro1 T621-2 Non-Programable Thermosts Installation Manual
other manuals:
Pro1 T621-2 Non-Programable Thermosts Operation Manual
Johnson Controls T7000e LCD Digital Thermostat Johnson Controls T7000e LCD Digital Thermostat Installation Guide
Honeywell T8635L Microelectronic Communicating Programmable Thermostat Honeywell T8635L Microelectronic Communicating Programmable Thermostat USER’s GUIDE
Hetta HS01RF WIRELESS THERMOSTAT Kit PAIRING INSTRUCTIONS Insert batteries into the Thermostat. Ensure that the…
HEAT-MAT NGT-567-0010 Underfloor Heating Thermostat Menu Introduction The NGT thermostat can switch your underfloor heating…
Honeywell RLV450 PROGRAMMABLE THERMOSTAT READ BEFORE INSTALLING DESCRIPTION * LP appears only for the first…
Honeywell RLV431 Programmable Thermostat Description The RLV431 thermostat can be used to control an electric…