Home Automation RC-2000 User Manual

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 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. It offers 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: CE

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.

Document Number 65I00-2 / Rev A / April, 2008

2008 Home Automation, Inc.

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.

2. Ensure that the thermostat is located in an area where there is adequate air circulation.

3. Do not mount in the path of direct sunlight or of radiant heat generated by appliances.

4. Do not mount behind an outdoor wall, near a fireplace, or in the path of any air ducts.

Removing an existing thermostat

1. Disconnect the power to the control transformer.

2. Remove the cover to the existing thermostat.

3. Disconnect the wires going to each terminal on the thermostat. Label each wire with the letter or number

at the terminal.

4. Remove the existing plate or base from the wall.

MOUNTING

When mounting the RC-2000, grasp the thermostat by the sides, avoiding the keys, and unsnap the base from the face. Holding the base to the wall so that the word "UP" is upright and facing you:

1. Mark the two mounting holes on the wall using a pencil.

2. Drill a hole using a 3/16" bit at each mounting hole marking.

3. Install the two wall anchors supplied.

4. Slide the system wires through the opening in the base.

5. Mount the base to the wall using the two #6 x 1/2" self-tapping screws supplied - See Figure 1.

Figure 1

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.

Upon completion of wiring the thermostat, push all excess wiring into the hole in the wall. Plug the hole with the supplied insulating foam to ensure an accurate temperature reading by the thermostat.

Align the tabs of the thermostat face with the slots of the thermostat base. Gently push the thermostat face into the thermostat base locking it into place - See Figure 2.

Wall

Slot

Base

Temperature Sensor

Tab

Figure 2 Figure 3

Note:

Be sure that the thermostat temperature sensor is standing up, and that it has not been damaged during installation - See Figure 3.

TYPICAL WIRING DIAGRAMS

CAUTION:

Do not short gas valve, fan, heat relay, or cool relay...even momentarily.

Do not attempt to hook up to live circuits. An accidental connection to a component on the thermostat circuit board could cause damage to the thermostat.

Be sure to disconnect the power to the control transformer before removing or installing thermostat.

JUMPER

3 2

24VAC Common

24VAC "HOT"

THERMOSTAT

For HVAC systems with a single transformer, the metal jumper between Terminal 1 (RC) and Terminal 2 (RH) on the left terminal strip must remain in place.

(C)

(RC)

24VAC CONTROL TRANSMFOMER

Figure 4 – Thermostat power-up for test or configuration purposes

Important Notes:

1. For HVAC systems with a single transformer for heating and cooling, the metal jumper between

Terminal 1 (RC) and Terminal 2 (RH) on the left terminal strip must remain in place – See Figure 4.

2. 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” settings under “System Options” must be configured – See Installation Settings.

¾ If the HVAC system is a two stage conventional or two speed heat pump, before operating the

thermostat (making a call for heat or cool), the “Cool Stages” and “Heat Stages” settings under

“Stage Settings” must be configured – See Installation Settings.

3. 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”.

4. A conventional thermostat can be configured for automatic changeover heat/cool, manual changeover

heat/cool, heat only, or cool only thermostat.

5. Refer to the “Configuration” steps under the wiring diagram for the respective HVAC system type.

6. If the thermostat or HVAC system does not perform as stated in the “Power Up” steps under the wiring

diagram for the respective HVAC system, recheck all wiring - See Troubleshooting Tips.

7. For HVAC systems with separate heating and cooling transformers, the metal jumper between

Terminal 1 (RC) and Terminal 2 (RH) on the left terminal strip must be removed – See Figure 5.

REMOVE

JUMPER

3 2

24VAC Common

24VAC Heat "HOT"

24VAC Cool "HOT"

THERMOSTAT

For HVAC systems with separate heating and cooling transformers, the metal jumper between Terminal 1 (RC) and Terminal 2 (RH) on the left terminal strip must be removed.

Figure 5 – Connections for heat and cool transformers - applies to all systems

(C)

(RH)

(RC)

24VAC HEAT TRANSMFOMER

24VAC COOL TRANSMFOMER

Single Stage Conventional

HVAC SYSTEM

Dehumidifier

Humidifier

Fan Relay

Cool Relay

Heat Relay

24VAC CONTROL TRANSMFOMER

8 7

Dehumidier

Humidifier

Fan

Cool

Heat

24VAC Common*

24VAC "HOT"

(D)

(H)

(G)

(Y1)

(W1)

(C)

(RC)

THERMOSTAT

* Common wire is required in “heat only” or “cool only” applications. Also use a common if heat, cool, or fan relay cannot supply 15mA to power thermostat, without activating.

Figure 6 – Connections for single stage heat/cool thermostat

CONFIGURATION

¾ From the factory, the RC-2000 is configured as a single stage conventional heat/cool thermostat.

¾ In the default configuration, this thermostat does not turn the fan on with a call for heat. If the furnace does

not turn the fan on with a call for heat, the thermostat must be configured to do so under “System Options”.

POWER UP

1. Double check wiring, be sure that there are no stray wires or wire strands at the connections.

2. Connect power to the transformer and system. The display will show the current thermostat settings.

3. Press [FAN] and select “On”. The fan should come on.

4. Press [FAN] and select “Auto”. The fan should go off.

5. Set the Mode to "Heat". Raise the desired heat setting above the current temperature. Ensure that the

heating unit comes on. Set the mode to "Off". Ensure that the heating unit goes off.

6. Set the Mode to "Cool". Lower the desired cool setting below the current temperature. Ensure that the

cooling unit comes on. Set the mode to "Off". Ensure that the cooling unit goes off.

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 common wire or the HAI Thermostat Power Supply Module (Part Number: 30A00-1) is required.

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Home Automation RC-2000 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual