HAI RC-2000 Installation Instructions Manual
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HAI RC-2000 Installation Instructions Manual

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DESCRIPTION
The RC-2000 is a precision digital thermostat designed for 24 VAC heating and cooling systems. The
RC-2000 will support the following systems:
¾
Single Stage Heat/Cool Conventional
¾
Two Stage Conventional (2 Stage Heat / 2 Stage Cool)
¾
Heat Pump (2 Stage Heat / 1 Stage Cool)
¾
Two Speed Heat Pump (3 Stage Heat / 2 Stage Cool)
¾
Dual Fuel Heat Pump
¾
Humidifier and Dehumidifier Control
The RC-2000 has the capability of being controlled both locally and by remote control.
programmability, stand-alone operation, and robust, optically isolated communications with automation
systems, utility control systems, and personal computers.
Electrical rating: 24 V; 2 A; 50/60 Hz
Maximum current: 2 A on any circuit, 3 A total
The following requirements must be observed for installation in Europe:
1. This equipment must be installed in accordance with National wiring rules for the country in which it is
installed.
2. All product labels, instructions and markings relating to safety must be translated to a language, which is
acceptable in the country in which this equipment is to be installed.
INSTALLATION
Before installing this thermostat:
1. Read all of the Installation Instructions carefully.
2. Read the Owner's Manual carefully.
3. Ensure that this product is suitable for your application.
4. Ensure that wiring complies with all codes and ordinances.
5. Disconnect power to the control transformer to prevent electrical shock and damage to equipment.
6. Select an appropriate location to ensure an accurate temperature reading.
RC-2000 Thermostat Installation Instructions
Document Number 65I00-2 / Rev A / April, 2008
Copyright ¤ 2008 Home Automation, Inc.
All Rights Reserved
CE
It offers
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  • Page 1 RC-2000 Thermostat Installation Instructions DESCRIPTION The RC-2000 is a precision digital thermostat designed for 24 VAC heating and cooling systems. The RC-2000 will support the following systems: ¾ Single Stage Heat/Cool Conventional ¾ Two Stage Conventional (2 Stage Heat / 2 Stage Cool) ¾...
  • Page 2 Location When replacing an existing thermostat, install the RC-2000 in the same location. If the existing location doesn't meet the following criteria, choose a new location to mount the RC-2000. When choosing a location for the thermostat: 1. Ensure that the thermostat is mounted 5 feet above the floor and is at least 2 feet from an outdoor wall.
  • Page 3 Connect each wire to the terminal strip(s) on the thermostat base per the wiring diagram for your system application - See Figures 4 - 10. Form the thermostat wiring so that the cable lies flat between the terminal strip(s) and the center of the base - See Figure 2. If a remote system or temperature sensor is being used with the thermostat, connect the remote system or temperature sensor wiring per the diagram for the application - See Figures 11 - 13.

  • Page 4: Typical Wiring Diagrams

    Terminal 1 (RC) and Terminal 2 (RH) on the left terminal strip must remain in place – See Figure 4. From the factory, the RC-2000 is configured to control a single stage conventional HVAC system. ¾ If the HVAC system is a heat pump, dual fuel heat pump, or if the thermostat is connected to a zone control system that requires a sub-base, before operating the thermostat, the “System Type”...
  • Page 5 When configured as a conventional thermostat, by default this thermostat does not turn the fan on with a call for heat. If the furnace requires the thermostat to turn the fan on with a call for heat, configure the “System Mode” to “Fan On With Heat” under “System Options”. A conventional thermostat can be configured for automatic changeover heat/cool, manual changeover heat/cool, heat only, or cool only thermostat.

  • Page 6: Hvac System

    The RC-2000 thermostat is designed to work with most single state conventional 4-wire HVAC systems (without a transformer common). However, if the RC-2000 “resets” when calling for heat or cool, or if the heat, cool, or fan relay cannot supply 15mA to power thermostat without the relay activating, the transformer...

  • Page 7: Zone Controller

    (Y) when the Y1 terminal is energized. Neither W2 nor Y2 is energized when the mode is set to "OFF". Therefore, the RC-2000 can act as a Master to set the operating mode of the entire system. POWER UP 1.
  • Page 8 Two Stage Conventional (2 Stage Heat / 2 Stage Cool) HVAC SYSTEM Dehumidifier Dehumidier Humidifier Humidifier (Y2) Cool 2 Relay Cool 2 Fan Relay (Y1) Cool 1 Relay Cool 1 (W1) Heat 1 Relay Heat 1 (W2) Heat 2 Relay Heat 2 24VAC Common* (RC)
  • Page 9 RC-2000 can obtain the outdoor temperature from a remote system. If the RC-2000 can not obtain the outdoor temperature, the heat pump compressor will not operate and the thermostat will only call for the auxiliary heat until the problem is resolved. When this occurs, the display will flash red and the “Problem With Outdoor Temperature Sensor.
  • Page 10 Heat Pump (2 Stage Heat / 1 Stage Cool) HVAC SYSTEM Dehumidifier Dehumidier Humidifier Humidifier Fault Relay Ground Fault Fan Relay (Y1) Compressor Relay Compressor Energized in Heat Reversing Valve Energized in Cool (W2) Aux Heat Relay Auxilirary Heat 24VAC Common* (RC) 24VAC "HOT"...
  • Page 11 Two Speed Heat Pump (3 Stage Heat / 2 Stage Cool) HVAC SYSTEM Dehumidifier Dehumidier Humidifier Humidifier (Y2) Comp Stage 2 Relay Compressor Stage 2 Fault Relay Ground Fault Fan Relay (Y1) Comp Stage 1 Relay Compressor Stage 1 Energized in Heat Reversing Valve Energized in Cool (W2)

  • Page 12: Remote System Wiring Diagrams

    REMOTE SYSTEM WIRING DIAGRAMS This thermostat has been preprogrammed with energy saving program schedules in accordance with the ® ENERGY STAR program. When used with a remote system, HAI recommends that the Program Mode be configured as “None” or “Occupancy”. This will disable the internal program schedules. HAI HOME CONTROL SYSTEMS The thermostat can be connected to an HAI Home Control system.

  • Page 13: Vdc Output

    REMOTE SETBACK SWITCH The thermostat can be connected to a remote switch to toggle the desired heat and cool temperature settings between preset setpoints. A signal can be sent from the remote switch location to change the thermostat temperature settings from the Occupancy Day temperature settings to the Occupancy Night temperature settings.

  • Page 14: Remote Temperature Sensor

    Run a twisted pair, shielded cable from the RC-2000 to the remote temperature sensor location. For distances up to 100 feet, typical twisted pair, PVC-insulated, shielded cable may be used. For distances from 100-150 feet, twisted pair with polypropylene insulated conductors, shielded must be used.

  • Page 15: Setup And Configuration

    SETUP AND CONFIGURATION NOTE: For proper operation of the features of this thermostat, the Time and Date must be set. Even when connected to an HAI controller which sets the time and day, the Date must be manually set in the thermostat under the “Settings” menu. INSTALLATION SETTINGS This section describes the items that the installer must setup as part of the thermostat installation.
  • Page 16 System Options Note: Before operating the thermostat, the “System Type” and “System Mode” must be configured. The thermostat can be configured with the following system options: System *Conventional Dual Fuel Heat Pump Zone Control Heat Pump Type *Auto Changeover Auto Changeover Auto Changeover Auto Changeover No Fan With Heat...
  • Page 17 Cool/Heat Min On/Off These items are used to limit the on and off times of the cooling and heating system (in minutes). The number of minutes the thermostat forces the cooling system to remain on before turning off. Raising this number will increase the total time the cooling system is on (saving energy), but may allow the temperature to drift farther from Cool Minimum On setpoint (decreasing comfort).
  • Page 18 This thermostat is equipped with Energy Efficient Control (EEC) that continually monitors the performance of the HVAC system and uses Stage 2 (heat or cool) and Stage 3 (auxiliary heat) only when necessary. If it determines that Stage 1 is able to heat or cool at a rate of 5 degrees per hour or better, Stage 2 will not be used. If Stage 1 is unable to heat or cool at this rate, the thermostat will use Stage 2 as needed.

  • Page 19: Limited Warranty

    Humidity Options The Humidity Options are used to configure the dehumidifier and/or humidifier output on the thermostat. Not Used: Dehumidifier/Humidifier output is disabled. Fan Speed Control: This option uses the dehumidifier output to control the fan speed on an HVAC system with a variable speed fan.

  • Page 20: Troubleshooting Tips

    TROUBLESHOOTING TIPS SYMPTOM ACTION TO TAKE Thermostat Dead Check power to the thermostat Check wiring diagrams SYMPTOM ACTION TO TAKE Heat Or Cool Inoperative Check for break in W or Y wire Allow minimum off time to pass Check system options for correct settings If arrow is blinking, wait until startup delay expires Mode is Off (Select Heat, Cool, or Auto) Remote system is overriding thermostat...

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