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- Page 1 TSTATECM2W01 Two-Wire Relay Module For use with the Côr®7 and Côr®7C Thermostats Installation Instructions Designed in the USA. NOTE: Read the entire instruction manual before starting the installation.
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Page 2: Table Of Contents
TABLE OF CONTENTS PAGE SAFETY CONSIDERATIONS ....... . INTRODUCTION ......... . INSTALLATION CONSIDERATIONS . -
Page 3: Introduction
INTRODUCTION The Côr Two−Wire Relay Module for use with the Côrr 7 and Côrr 7C Thermostats allows installation in homes where there are not sufficient wires to connect to the equipment and/or the C−wire for thermostat power. The module is mounted near or on the indoor equipment. -
Page 4: Installation Considerations
INSTALLATION CONSIDERATIONS Power The Two−Wire Relay Module is powered by 24VAC. Only 2 wires are required for connection between the Côr 7 Series Thermostat and the Two−Wire Relay Module. These two wires (V+ and Vg) do not provide ordinary 24VAC. They carry a combination of power and communications data that is unique to these products. - Page 5 Thermostats. The dry contact must be configured for dehumidification. See Wiring Diagrams for more information. Outdoor Temperature Sensor (TSTATXXSEN01−B) Outdoor air temperature sensor (OAT) is an optional accessory that will connect to the Two−Wire Relay Module. Optimum performance is obtained when Wi−Fi weather is setup or an outdoor temperature sensor is used with the Côr 7 Series Thermostats.
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Page 6: Installation
INSTALLATION CAUTION UNIT DAMAGE HAZARD Failure to follow the recommended wiring practices could result in damage to the wall control and personal property. Improper wiring or installation may damage Thermostat Control. Check to make sure wiring is correct before proceeding with installation or turning on power. - Page 7 Fig. 1 − TSTATECM2W01 Carton Contents Carton contains the following components. 1. Two−Wire Relay Module 2. Stand−off for Equipment Control Module 3. Plastic anchors and screws Install Two−Wire Relay Module Control Follow the installation instructions for installing the Côr 7 Series Thermostat.
- Page 8 CAUTION UNIT DAMAGE HAZARD Failure to follow this caution may result in equipment damage or improper operation. Improper wiring or installation may damage Thermostat Control. Check to make sure wiring is correct before proceeding with installation or turning on power. 1.
- Page 9 3. Secure thermostat mounting base to wall and make sure all wires extend through hole in mounting base per the Côr 7 Series installation instructions. 4. Connect two wires to the Vg and V+ terminals on the Côr 7 Series Thermo- stat, noting their color and which terminal they are attached.
- Page 10 7. Route wires through rear of Two−Wire Relay Module using either a clear- ance hole or supplied standoff. See Fig. 3. Fig. 3 − Standoff NOTE: Standoffs are provided as an aid when installing Two−Wire Relay Module on inside equipment or a solid wall. 8.
- Page 11 Fig. 4 − Cover on Equipment Control Module 10. Turn on power to equipment. On power up, all display segments will light for 5 sec. and two digit code appears on the center of the display which identifies the thermostat equipment type configuration. Refer to the Côr 7 Series Thermostat installation instructions to set up the thermostat with the Two−Wire Relay Module.
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Page 12: Troubleshooting
TROUBLESHOOTING If the display doesn’t power up after power is applied, check the Rc/Rh and C terminals for 24VAC. If 24VAC is present, check the voltage between Vg and V+. This voltage will be approximately 12−20VDC. If voltage is present, check the polarity to make sure it is wired correctly. - Page 13 Equip- Options Cool Cool Heat Heat Heat Heat ment Stage 1 Stage 2 Stage 1 Stage 2 Stage 3 Stage 4 Heat Heat Type Stage 1 Stage 2 1 Stage 1 Stage −− Y/Y2 −− W/W1 −− −− −− −− −−...
- Page 14 Equip- Options Cool Cool Heat Heat Heat Heat ment Stage 1 Stage 2 Stage 1 Stage 2 Stage 3 Stage 4 Heat Heat Type Stage 1 Stage 2 1 Stage RVS= Y/Y2 −− Y/Y2 Y/Y2, Y/Y2, Y/Y2, W/W1 W/W1, Coil 3 1=HP O/W2/ W/W1...
- Page 15 Equip- Options Cool Cool Heat Heat Heat Heat ment Stage 1 Stage 2 Stage 1 Stage 2 Stage 3 Stage 3 Heat Heat Type Stage 1 Stage 2 1 Stage 1 Stage RVS= Y/Y2 −− Y/Y2 W/W1 −− −− W/W1 −−...
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Page 16: Wiring Diagrams
WIRING DIAGRAMS * Indicates that connection may not be required/available. Fig. 5 − Display to Equipment Control Module Connection... - Page 17 * Indicates connection may not be required/available. Fig. 6 − FV/FK Fan Coil with 2−Stage Heat Pump...
- Page 18 Typical Single-Stage Two-Wire Relay Module Fan Coil Heat Pump RVS Cooling O/B W2 Heat Stage 2 W/W1 Heat Stage 3 Y1 / W2 Heat/Cool Stage 1 Y/Y2 24VAC Hot Heating 24VAC Hot Cooling Dry Contact 1 Dry Contact 2 24VAC Common Humidify Humidifier Solenoid Outdoor Air Temp...
- Page 19 Two-Wire Relay Module * Indicates connection may not be required/available. Fig. 8 − Fan Coil Shown w/Aux.Connection #1 (Heat Pump/Air Conditioner removed for clarity.)
- Page 20 Two-Wire Relay Module Fan Coil Air Conditioner * Indicates connection may not be required/available. Fig. 9 − FV/FK Fan Coil w/2−Stage Air Conditioner...
- Page 21 Typical Single-Stage Two-Wire Relay Module Fan Coil Air Conditioner * Indicates connection may not be required/available. Fig. 10 − Typical Fan Coil with Air Conditioner...
- Page 22 Two-Wire Relay Module Fan Coil * Indicates connection may not be required/available. Fig. 11 − Fan Coil Shown with Aux. Connection #2 (Heat Pump/Air Conditioner removed for clarity.)
- Page 23 Fan Coil Two-Wire Relay Module Heat Pump * Indicates connection may not be required/available. Fig. 12 − FV/FK Fan Coil with 1−Stage Heat Pump...
- Page 24 Typical Two-Wire Relay Module Fan Coil * Indicates connection may not be required/available. Fig. 13 − Typical Fan Coil Heating Only...
- Page 25 Two-Wire Relay Module Fig. 14 − Thermidistat Control w/Dry Contact Control for Fan Run Time...
- Page 26 Two-Wire Relay Module Fan Coil Air Conditioner * Indicates connection may not be required/available. Fig. 15 − FV/FK Fan Coil with 1−Stage Air Conditioner...
- Page 27 Typical Single-Stage Two-Wire Relay Module Fan Coil Air Conditioner * Indicates connection may not be required/available. Fig. 16 − Typical Fan Coil Cooling Only...
- Page 28 Two-Wire Relay Module Furnace Heat Pump Indicates connection may not be required/available. ** Some heat pumps may designate W1. *** Option 19 set to 2. Fig. 17 − Variable Speed, Multi−Stage, Stage Modulating and Single−Stage Furnace with 2−Stage Heat Pump...
- Page 29 Single-Stage Two-Wire Relay Module Furnace Heat Pump Indicates connection may not be required/available. ** Some heat pumps may designate W1. *** Option 19 set to 2. Fig. 18 − Single−Stage Furnace with Heat Pump (Hybrid Heat)
- Page 30 Air Conditioner Two-Wire Relay Module Furnace Indicates connection may not be required/available. Fig. 19 − Variable Speed, Step Modulating, Multi−Stage and Single−Stage Furnace with Two−Stage Air Conditioner...
- Page 31 Single-Stage Furnace Air Conditioner Two-Wire Relay Module O/B W2 Heat Stage 1 W/W1 Y1 / W2 Y/Y2 Cool Stage 1 Y/Y2 24VAC Hot Heating 24VAC Hot Cooling Dry Contact 1 Dry Contact 2 DHUM 24VAC Common Humidify Humidifier Solenoid Outdoor Air Temp Valve * Remote Room Sensor Outdoor Sensor *...
- Page 32 Two-Wire Relay Module Furnace Heat Pump Indicates connection may not be required/available. ** Some heat pumps may designate W1. *** Option 19 set to 2. Fig. 21 − Variable Speed, Multi−Stage and Step Modulating Furnace with Single−Stage Heat Pump...
- Page 33 Two-Wire Relay Module Furnace Indicates connection may not be required/available. Fig. 22 − Single−Stage Furnace Heating Only...
- Page 34 Two-Wire Relay Module Furnace Air Conditioner Indicates connection may not be required/available. ** Option 19 set to 2. Fig. 23 − Variable Speed, Multi−Stage, Step Modulating and Single−Stage Furnace with Single−Stage Air Conditioner...
- Page 35 Two-Wire Relay Module Furnace Air Conditioner Indicates connection may not be required/available. ** Option 19 set to 2. Fig. 24 − Single−Stage Furnace with Air Conditioner and Split Power...
- Page 36 NOTES...
- Page 40 IIK-TSTATECM2W-01 Copyright 2017 Côr Home Automation P .O. Box 4808 Syracuse, NY 13221 Replaces: New Edition Date: 07/17 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
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