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Owner's Manual
3 Stage Heat / 2 Stage Cool - With Energy Efficient Control
APPLICATION
This RC-112BZ thermostat is applicable to heat pumps with two stages of heating and cooling, plus a third
stage of heating called "auxiliary" heating. The heat pump may have a two-speed compressor (low and high
speeds), two compressors (stage 1 and stage 2) or a "superheater" or other device as the second stage. In normal
operation, stage 1 and 2 (or low and high speed) will be used as required to maintain the set temperature. In
heating mode, the auxiliary heating will only be used if the heat pump cannot maintain a rate of temperature rise
with both stages running (high speed). It has the capability of being controlled both locally and by remote
control over a Z-Wave network. It offers programmability, stand-alone operation, and communications with
automation systems, utility control systems, or personal computers over a Z-Wave network. The RC-112ZB is
equipped with a "cool blue" backlight display.
Electrical rating:
Maximum current:
Thermostat operating current:
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. Fuses must be replaced only with IEC rated components.
3. 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.
Location
When replacing an existing thermostat, install the RC-112BZ in the same location. If the existing location
doesn't meet the following criteria, choose a new location. When choosing a location for the thermostat:
RC-112BZ Two Speed Heat Pump
Thermostat Installation Instructions
24 V; 3 A; 50/60 Hz
2 A on any circuit, 3 A total
less than 15 mA
Document Number 13I00-62 / Rev A / May, 2007
Copyright © 1999-2007 Home Automation, Inc.
All Rights Reserved
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Summary of Contents for HAI RC-112BZ
- Page 1 Thermostat Installation Instructions APPLICATION This RC-112BZ thermostat is applicable to heat pumps with two stages of heating and cooling, plus a third stage of heating called "auxiliary" heating. The heat pump may have a two-speed compressor (low and high speeds), two compressors (stage 1 and stage 2) or a "superheater" or other device as the second stage. In normal operation, stage 1 and 2 (or low and high speed) will be used as required to maintain the set temperature.
- Page 2 4. Remove the existing plate or base from the wall. MOUNTING When mounting the RC-112BZ, grasp the thermostat by the sides, avoiding the keys, and unsnap the base. Holding the base to the wall so that the word "TOP" is upright and facing you: 1.
- Page 3 Connect each wire to the terminal strip on the thermostat base per the wiring diagram for your system application - See Figures 4 - 5. Form the thermostat wiring so that the cable lies flat between the terminal strip and the center of the base. Upon completion of wiring the thermostat, push all excess wiring into the hole in the wall.
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Page 4: Typical Wiring Diagrams
The RC-112BZ automatically controls auxiliary heat efficiently. The RC-112BZ requires at least 1 stage of auxiliary heat enabled at all times. If the heat pump is equipped with an outdoor thermostat, it should be removed from the auxiliary heat circuit, or reconfigured... - Page 5 Figure 5...
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Page 6: Disable Keys
CONFIGURING THE BACKLIGHT ON THE RC-112BZ The backlight on the RC-112BZ can be configured to one of three different modes: 1) on for 30 seconds when a key is pressed, 2) always on, or 3) always off. To configure the display backlight to turn on when a key is pressed, then back off 30 seconds later, set the “JP2”... -
Page 7: Installer Setup
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 all segments for about 5 seconds. 3. Press the Fan key. The fan should come on. Press the Fan key again. The fan should go off. 4. - Page 8 Address If you are using Communications Mode 0 or 1, and you are installing more than one thermostat, each must be set to a consecutive address, starting at 1. The default address setting is 1. An address from 1- 127 may be selected. Communications mode The thermostat can communicate with remote systems in 4 different modes.
- Page 9 Fahrenheit 24-hour time format non-programmable When communicating with an HAI controller, the thermostat should be configured as "non-programmable". To disable the clock and filter reminder displays, add “16” to each value. The default setting is 1. Calibration offset This item is used to raise or lower the current temperature reading by 1 degree Fahrenheit or 1/2 degree Celsius.
- Page 10 Stage 2 differential This item specifies the temperature difference between stage 1 (or low speed) heat pump operation and stage 2 (or high speed) heat pump operation. The default setting of 1 (degree F) is recommended for most applications. If energy efficiency is more important than precise temperature control, this can be raised to 2 or 3 degrees. This setting affects stage 2 operation for both heating and cooling.
- Page 11 (1 = “- 29” to 59 = “+ 29” seconds per day; 30 = No change) The default setting is 30. Note: If an HAI automation system is being used, the controller system time is sent to the thermostat every minute. This adjustment will have no effect.
- Page 12 (See Setup Item 03 - "Display Options"). HAI AUTOMATION SYSTEMS The thermostat can communicate with an HAI automation system over a Z-Wave network. The controller can send commands to the thermostat to change mode, cool setting, heat setting, status of fan and hold, and other items.
- Page 13 COMMAND_CLASS_SWITCH_BINARY COMMAND_CLASS_CLOCK COMMAND_CLASS_THERMOSTAT_MODE Upon power up, allow 10 seconds for the RC-112BZ thermostat to initialize. After 10 seconds, a controller can set the mode, get the current mode, and get the modes supported by the thermostat. COMMAND_CLASS_THERMOSTAT_SETPOINT Upon power up, allow 10 seconds for the RC-112BZ thermostat to initialize. After 10 seconds, a controller can change setpoints, get current setpoints, and request the setpoints that are supported by thermostat.
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Page 14: Interoperability With Z-Wave™ Devices
COMMAND_CLASS_THERMOSTAT_FAN_MODE Upon power up, allow 10 seconds for the RC-112BZ thermostat to initialize. After 10 seconds, a controller can set the fan mode, get the current fan mode, and get the fan modes supported by the thermostat. COMMAND_CLASS_THERMOSTAT_FAN_STATE Upon power up, allow 10 seconds for the RC-112BZ thermostat to initialize. After 10 seconds, a controller can request the state of the fan. -
Page 15: Troubleshooting Tips
FCC NOTICE Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions may cause harmful interference to radio communications. - Page 16 See if heat pump is equipped with outdoor thermostat. If so, Heat disconnect it. Heat pump may be equipped with an outdoor thermostat which is overriding Aux Heat when outdoor temperature is above certain level - Disconnect the outdoor thermostat, the RC-112BZ controls the Aux Heat automatically...