Leviton RC-1500 User manual

1
DI-000-RT15Z-00A
(65I00-4ZB)
2 3 4 5
6 7 8 9 10
DESCRIPTION
The RC-1500 is a precision digital thermostat designed for 24 VAC heating and cooling systems.
The RC-1500 will support the following systems:
• Single Stage Heat/Cool Conventional
• Two Stage Conventional (2 Stage Heat / 2 Stage Cool)
• Heat Pump and Geothermal Heat Pump (2 Stage Heat / 1 Stage Cool)
• Two Speed Heat Pump and Geothermal Two Speed Heat Pump (3 Stage Heat / 2 Stage Cool)
• Dual Fuel Heat Pump and Geothermal Dual Fuel Heat Pump
The RC-1500 has the capability of being controlled both locally and by remote control. It offers
programmability, stand-alone operation, and wireless 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.
LOCATION
When replacing an existing thermostat, install the RC-1500 in the same location. If the existing location
doesn’t meet the following criteria, choose a new location to mount the RC-1500. 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-1500, 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 temperature sensor is being used with the thermostat, connect the remote system or temperature
sensor wiring per the diagram for the application - See Figure 11.
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.
Figure 2
Wall
Base
Tab
Slot
Temperature
Sensor
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: Be sure to disconnect the power to the control transformer before removing or installing thermostat.
CAUTION: Do not short gas valve, fan, heat relay, or cool relay...even momentarily.
CAUTION: 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.
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-1500 is configured to control a single stage conventional HVAC system.
• 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.
• 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.
24VAC "HOT"
24VAC Common
24VAC
CONTROL
TRANSFORMER
THERMOSTAT
UP
(C)
(RC)
JUMPER
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.
Figure 4
–
Thermostat power
-
up for test or configuration purposes
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.
UP
24VAC Common
24VAC Cool "HOT"
24VAC
COOL
TRANSFORMER
24VAC Heat "HOT"
24VAC
HEAT
TRANSFORMER
REMOVE
JUMPER
THERMOSTAT
(C)
(RH)
(RC)
3
1
2
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
SINGLE STAGE CONVENTIONAL FOR ZONE CONTROL SYSTEMS
(W2)
4
(Y2)
(G)
(Y1)
(W1)
(C)
(RC)
10
1
3
8
6
7
ZONE CONTROLLER
THERMOSTAT
System Cool Mode
Fan Relay
Zone Cool
Zone Heat
System Heat Mode
24VAC
CONTROL
TRANSFORMER
Fan
Cool
Cool Mode
24VAC "HOT"
24VAC Common
Heat Mode
Heat
UP
Fi
gure 7 – Connections for single stage thermostat for zone control systems
CONFIGURATION
• The “System Type” for this thermostat must be set to “Zone Control” under “System Options”.
The two additional outputs (W2 and Y2) are used with zoned heating and cooling systems. The W2 and
Y2 terminals control the mode of operation (heating or cooling) of the zone control panel. The zone control
panel will recognize calls for heat (W) from the individual zones when the W2 terminal is energized, and
calls for cool (Y) when the Y2 terminal is energized. Neither W2 nor Y2 is energized when the mode is set
to “OFF”. Therefore, the RC-1500 can act as a Master to set the operating mode of the entire system.
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.
TWO STAGE CONVENTIONAL (2 STAGE HEAT / 2 STAGE COOL)
UP
Heat 1
Heat 2
24VAC Common*
24VAC "HOT"
Cool 2
Cool 1
Fan
24VAC
CONTROL
TRANSFORMER
Heat 2 Relay
Heat 1 Relay
Cool 1 Relay
Fan Relay
Cool 2 Relay
THERMOSTAT
HVAC SYSTEM
7
6
8
3
1
10
(RC)
(C)
(W1)
(Y1)
(G)
(Y2)
4
(W2)
Figure 8 – Connections for two stage conventional thermostat
CONFIGURATION
• The “System Type” for this thermostat must be set to “Conventional” under “System Options”.
• 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”.
• The “Cool Stages” and “Heat Stages” settings must be configured under “Stage Settings”.
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. Press [HOLD] and select “On” to override Energy Efficient Control.
6. Set the Mode to “Heat”. Raise the desired heat setting 1° above the current temperature. Ensure that Stage
1 heat comes on. After a few minutes, raise the desired heat setting 3°s above the current temperature.
Stage 2 heat should come on. Set the mode to “Off”. Ensure that the heating unit goes off.
7. Set the Mode to “Cool”. Lower the desired cool setting 1° below the current temperature. Ensure that Stage
1 cool comes on. After a few minutes, lower the desired cool setting 3°s below the current temperature.
Stage 2 cool should come on. Set the mode to “Off”. Ensure that the cooling unit goes off.
8. Press [HOLD] and select “Off” to enable Energy Efficient Control.
ABOUT HEAT PUMP SYSTEMS
1. Terminal 5 (O) is energized for cooling, Terminal 6 (B) is energized for heating.
In most applications, the reversing valve is energized for cooling and should be connected to the
“O” terminal. If the heat pump requires the reversing valve to be energized for heating, connect the
reversing valve to the “B” terminal.
2. With a call for Stage 2 on a two speed heat pump, both compressor outputs Y1 and Y2 are energized.
When 2 stages of cooling and 2 stages of heating are configured for a heat pump, Stage 2 is
considered high speed on the heat pump and not auxiliary heat. If auxiliary heat (or emergency heat) is
needed, configure 3 stages of heating on the heat pump.
3. To temporarily disable Energy Efficient Control and heat as quickly as possible, press [HOLD] and
select “On”. The RC-1500 will use the Auxiliary Heat as needed to reach the heat setting.
4. Terminal 9 (L) is used to indicate a fault with the heat pump compressor. When there is a compressor
fault, the display will flash red and the “Heat Pump Fault” error message is shown.
5. The Emergency Heat Relay (E Terminal) and outdoor thermostats (usually accessories to a heat
pump), are not used. The RC-1500 automatically controls auxiliary heat efficiently. If the heat pump is
equipped with an outdoor thermostat, it should be removed from the auxiliary heat circuit.
ABOUT DUAL FUEL HEAT PUMP SYSTEMS
A dual fuel heat pump typically has a gas furnace combined with a heat pump. The gas furnace is used
as auxiliary heat unless the outdoor temperature is very low, in which case it is used as the primary heat
source.
1. When used with dual fuel heat pumps, the RC-1500 requires a method for obtaining the outdoor
temperature. A temperature sensor can be physically connected to the “Remote Temp. Sensor”
terminals on the thermostat or the RC-1500 can obtain the outdoor temperature from a remote system.
If the RC-1500 cannot 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. Some Heat Stages May Be
Disabled” error message is displayed. After the error has been acknowledged, “Outdoor Sensor Fault”
will be displayed in the Message Bar until the problem is resolved.
2. Balance Setpoint Limits:
• If the outdoor temperature is above the “Upper Balance Setpoint” (45°F by default), the heat pump
is used exclusively.
• If the outdoor temperature falls below the “Upper Balance Setpoint” but is above the “Lower Balance
Setpoint” (35°F by default) and if the heat pump is unable to heat at a rate of 5°s per hour or better,
the heat pump will turn off and auxiliary heat will be used until the call for heat has been satisfied.
• If the outdoor temperature falls below the “Lower Balance Setpoint”, the heat pump will turn off and
the auxiliary heat will be used until the call for heat has been satisfied.
• The Balance Setpoint Limits can be adjusted according to the manufacturer’s specifications under
“Balance Setpoint” – See Installation Settings.
3. When the RC-1500 makes a call for auxiliary heat, the heat pump compressor is turned off and the
auxiliary heat is used exclusively.
HEAT PUMP (2 STAGE HEAT / 1 STAGE COOL)
24VAC Common*
24VAC "HOT"
Auxilirary Heat
Compressor
Ground Fault
Fan
Compressor Relay
Aux Heat Relay
Fan Relay
Fault Relay
Reversing Valve
Energized in Cool
Energized in Heat
24VAC
CONTROL
TRANSFORMER
THERMOSTAT
UP HVAC SYSTEM
7
6
8
3
1
(G)
(Y1)
(B)
(C)
(RC)
4
5
9
(O)
(W2)
(L)
Figure 9 – Connections for heat pump thermostat
CONFIGURATION
• The “System Type” for this thermostat must be set to “Heat Pump” under “System Options”.
• The “System Type” for this thermostat must be set to “Dual Fuel Heat Pump” for a dual fuel system
(Terminal “W2” is connected to the “W” or “W1” on the furnace).
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 of the 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. Press [HOLD] and select “On” to override Energy Efficient Control.
6. Set the Mode to “Heat”. Raise the desired heat setting 1° above the current temperature. Ensure that
the heat pump comes on, in heating mode. After a few minutes, raise the desired heat setting 3°s
above the current temperature. Auxiliary heat should come on. After a few minutes, set the mode to
“EM Heat”. The heat pump should stop but the auxiliary heat should remain on. Set the mode to “Off”.
Ensure that both the heat pump and auxiliary heat go off.
7. Set the Mode to “Cool”. Lower the desired cool setting below the current temperature. Ensure that the
heat pump comes on, in cooling mode. Set the mode to “Off”. Ensure that the cooling unit goes off.
8. Press [HOLD] and select “Off” to enable Energy Efficient Control.
24VAC "HOT"
Heat
24VAC Common*
Fan
Cool
UP
24VAC
CONTROL
TRANSFORMER
Fan Relay
Cool Relay
Heat Relay
HVAC SYSTEM
THERMOSTAT
(RC)
(C)
(Y1)
(G)
(W1)
1
3
8
6
7
*
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
• From the factory, the RC-1500 is configured as a single stage conventional heat/cool thermostat.
• 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-1500 thermostat is designed to work with most single state conventional 4-wire HVAC systems (without
a transformer common). However, if the RC-1500 “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 LEVITON Thermostat Power Supply Module (Part Number: 30A00-1) is required.
SINGLE STAGE CONVENTIONAL
Comp Stage 2 Relay
Comp Stage 1 Relay
Compressor Stage 2
9
5
4
1
3
8
6
7
(L)
(G)
(Y1)
(B)
(O)
(W2)
(C)
(RC)
UP
HVAC SYSTEM
THERMOSTAT
24VAC
CONTROL
TRANSFORMER
Ground Fault
Fan
Compressor Stage 1
Energized in Heat
Energized in Cool
Auxilirary Heat
24VAC Common*
24VAC "HOT"
Aux Heat Relay
Reversing Valve
Fan Relay
Fault Relay
(Y2)
10
Figure10 – Connections for two speed heat pump thermostat
CONFIGURATION
• The “System Type” for this thermostat must be set to “Heat Pump” under “System Options”.
• The “Cool Stages” and “Heat Stages” settings must be configured under “Stage Settings”.
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 1° above the current temperature. Ensure that
the heat pump comes on, in heating mode. Press [HOLD] and select “On” to override Energy Efficient
Control. Stage 2 heat should come on.
6. Raise the desired heat setting 3°s above the current temperature. Auxiliary heat should come on.
7. After a few minutes, set the mode to “EM Heat”. Both stages of the heat pump should stop but the
auxiliary heat should remain on. Set the mode to “Off”. Ensure that the auxiliary heat goes off.
8. Press [HOLD] and select “Off” to enable Energy Efficient Control. Set the Mode to “Cool”. Lower
the desired cool setting 1° below the current temperature. Ensure that the heat pump comes on, in
cooling mode. Press [HOLD] and select “On”. Stage 2 cool should come on.
9. Set the mode to “Off”. Ensure that both stages of the cooling unit go off.
10. Press [HOLD] and select “Off” to enable Energy Efficient Control.
TWO SPEED HEAT PUMP (3 STAGE HEAT / 2 STAGE COOL)
WARNINGS AND CAUTIONS
• WARNING: TO AVOID FIRE, SHOCK OR DEATH, turn off power at circuit
breaker or fuse and test that the power is off before wiring!
• WARNING: TO AVOID SERIOUS PERSONAL INJURY OR DEATH, never touch uninsulated wires or
terminals unless the wiring has been disconnected at the network interface.
• Read and understand all instructions. Follow all warnings and instructions marked on the product.
• Do not use this product near water – e.g., near a tub, wash basin, kitchen sink or laundry tub, in a wet
basement, or near a swimming pool.
• Never push objects of any kind into this product through openings, as they may touch dangerous voltages.
• Never install communications wiring or components during a lightning storm.
• Never install communications components in wet locations unless the components are designed
specifically for use in wet locations.
• Use caution when installing or modifying communications wiring or components.
• SAVE THESE INSTRUCTIONS.
WEB VERSION

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DI-000-RT15Z-00A (65I00-4ZB) 20 For Technical Assistance Call: 800-824-3005 - www.leviton.com
LEVITON LIMITED WARRANTY
Leviton warrants to the original consumer purchaser and not for the benefit of anyone else that products
manufactured by Leviton under the Leviton brand name (“Product”) will be free from defects in material and
workmanship for the time periods indicated below, whichever is shorter: • OmniPro II and Lumina Pro:
three (3) years from installation or 42 months from manufacture date. • OmniLT, Omni IIe, and Lumina:
two (2) years from installation or 30 months from manufacture date. • Thermostats, Accessories: two
(2) years from installation or 30 months from manufacture date. • Batteries: Rechargeable batteries in
products are warranted for ninety (90) days from date of purchase. Note: Primary (non-rechargeable)
batteries shipped in products are not warranted. Products with Windows®Operating Systems: During
the warranty period, Leviton will restore corrupted operating systems to factory default at no charge,
provided that the product has been used as originally intended. Installation of non-Leviton software or
modification of the operating system voids this warranty. Leviton’s obligation under this Limited Warranty
is limited to the repair or replacement, at Leviton’s option, of Product that fails due to defect in material
or workmanship. Leviton reserves the right to replace product under this Limited Warranty with new or
remanufactured product. Leviton will not be responsible for labor costs of removal or reinstallation
of Product. The repaired or replaced product is then warranted under the terms of this Limited Warranty
for the remainder of the Limited Warranty time period or ninety (90) days, whichever is longer. This Limited
Warranty does not cover PC-based software products. Leviton is not responsible for conditions or
applications beyond Leviton’s control. Leviton is not responsible for issues related to improper
installation, including failure to follow written Installation and operation instructions, normal wear
and tear, catastrophe, fault or negligence of the user or other problems external to the Product.
To view complete warranty and instructions for returning product, please visit us at www.leviton.com.
Cat. No. – RC-1500WHZB
This product is covered by U.S. Pat. No. 8,091,795.
As per SIPCO LLC, this product may be used in a system and employs certain elements from one or
more of the following U.S. Patents: IP CO, LLC: 7,089,125; 7,054,271; 6,249,516; 6,044,062.
SIPCO LLC: 7,103,511; 6,914,893; 6,891,838; 5,714,931; 6,233,327; 7,397,907; 6,618,578; 7,079,810;
7,295,128; 7,263,073; 7,480,501; 6,437,692; 7,468,661; 7,053,767; 7,650,425; 7,739,378
FCC Compliance
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation.
© 2014 Leviton Mfg. Co., Inc.
REMOTE SYSTEM CONNECTIONS
This thermostat has been preprogrammed with energy saving program schedules. When used with a
remote system, it is recommended that the Program Mode be configured as “None” or “Occupancy”. This
will disable the internal program schedules.
REMOTE TEMPERATURE SENSOR
A remote temperature sensor can be installed to monitor the temperature from a remote location or can be
combined with the onboard temperature sensor for the average temperature of two locations.
Run a twisted pair, shielded cable from the RC-1500 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. For
distances from 150-250 feet, twisted pair with foam-polyethylene insulated conductors, shielded must be
used. Wire runs must not exceed 250 feet.
Make the connections to the Green and Black terminals under the section marked “Remote Temp Sensor”
on the right terminal strip - See Figure 11.
NOTES:
1. When connecting a remote temperature sensor, the shield and one of the wires from the remote
temperature sensor are tied together and get connected to the Black terminal – See Figure 11.
2. At the location of the temperature sensor, wrap the shield around the jacket of the cable and tape.
3. Configure the temperature sensor according to the application – See “Temperature Sensors” under
Installation Settings.
UP
THERMOSTAT
Black
Green
Communication
Jumper
Figure 11 – Connections to a Remote Temperature Sensor
DISABLE LOCAL CONTROL
The Task Buttons and Scroll Wheel on the thermostat can be disabled to prevent anyone from controlling
the thermostat locally.
To disable the Task Buttons and Scroll Wheel:
1. Remove the thermostat face from the thermostat base.
2. Remove the local control jumper - See Figure 12.
3. 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.
TO DISABLE TASK BUTTONS
AND SCROLL WHEEL
REMOVE JUMPER
COMM JUMPER
J8
Figure 12 – Local Control Jumper
SETUP AND CONFIGURATION
NOTE: For proper operation of the features of this thermostat, the Time and Date must be set. Even when
connected to a Leviton automation 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. The
Installation Settings menu is used to configure the operating parameters of the thermostat.
To access the Installation Settings mode:
1. From the Home Page, press the Scroll Wheel.
2. Turn the Scroll Wheel until “Setup” is highlighted.
3. Press the Scroll Wheel or [Select] to select “Setup”.
4. Turn the Scroll Wheel until “Installation Settings” is highlighted.
5. Press the Scroll Wheel or [Select] to select “Installation Settings”.
6. Read the warning and then press [Continue] to proceed.
7. To exit Setup mode, press [Back] several times until the Home Page is displayed.
NOTES:
1. The thermostat will automatically default to the Home Page after 3 minutes of no key activity.
2. The word “default” indicates the initial setting when the thermostat is delivered from the factory.
3. Unless otherwise noted, an asterisk (*) next to a setup item indicates the default setting.
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 Type
*Conventional
----------------------------------
Zone Control
Dual Fuel Heat Pump1
---------------------------
Geothermal Dual Fuel
Heat Pump1
Heat Pump
-----------------------
Geothermal
Heat Pump
System Mode
*Auto Chan
g
eover Auto Chan
g
eover Auto Chan
g
eover
Manual Chan
g
eover Manual Chan
g
eover Manual Chan
g
eover
Heat Only
Cool Only
Fan On with Heat Stage
*None 1 2 3 *1, 2,
and
3
1 2 3 *1, 2,
and
3
1 2 3
1
and
2
1
and
3
2
and
3
1, 2,
and
3
1
and
2
1
and
3
2
and
3
1
and
2
1
and
3
2
and
3
1When configured, an additional Installer Setup menu item (Balance Setpoints) is added to the list.
PROGRAM OPTIONS
This thermostat has been preprogrammed with energy saving program schedules. When used with a
remote system, it is recommended that the Program Mode be configured as “None” or “Occupancy”. This
will disable the internal program schedules.
The program options setting sets the method for scheduling temperature change commands.
CALIBRATION OFFSET
This item is used to raise or lower the current temperature reading from the onboard temperature sensor
by .5° Fahrenheit or .25° Celsius. The default setting is 0.00.
COOL/HEAT LIMIT
These items are used to limit the desired temperature settings in cool and heat mode. The desired cool
setting can never be set below the “Cool Setpoint Min” setting and the desired heat setting can never be
set above the “Heat Setpoint Max” setting. The default setting for cool is 48°F. The default setting for heat
is 88°F.
COOL/HEAT MIN ON/OFF
These items are used to limit the on and off times of the cooling and heating system (in minutes).
Cool Minimum On
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
setpoint (decreasing comfort). When combined with Cool Minimum
Off, cycles per hours can be obtained by using the following
calculation:
60 / (Cool Minimum On + Cool Minimum Off). The default time is 7
minutes.
Cool Minimum Off
The number of minutes the
thermostat forces the cooling
system to remain off before
starting again.
Raising this number will increase the total time that the cooling
system is off (saving energy), but may allow the temperature to drift
farther from the setpoint (decreasing comfort). When combined with
Cool Minimum On, cycles per hours can be obtained by using the
following calculation:
60 / (Cool Minimum On + Cool Minimum Off). The default time is 8
minutes.
Heat Minimum On
The number of minutes the
thermostat forces the heat to
remain on before turning off.
Raising this number will increase the total time the heating system is
on (saving energy), but may allow the temperature to drift farther from
the setpoint (decreasing comfort). When combined with Heat
Minimum Off, cycles per hours can be obtained by using the following
calculation:
60 / (Heat Minimum On + Heat Minimum off). The default time is 7
minutes.
Heat Minimum Off
The number of minutes the
thermostat forces the heat to
remain off before starting again.
Raising this number will increase the total time that the heating
system is off (saving energy), but may allow the temperature to drift
farther from the setpoint (decreasing comfort). When combined with
Heat Minimum On, cycles per hours can be obtained by using the
following calculation:
60 / (Heat Minimum On + Heat Minimum off). The default time is 8
minutes.
None: The internal program schedule is disabled. Use this when connected to a remote
system for temperature change commands.
Occupancy: Program setpoints are based on the occupancy status of a remote system.
Status options are Day, Night, Away, and Vacation. This mode is also used with a remote
setback switch. NOTE: A remote system or switch is required.
*Schedule: Program setpoints are based on the time of day and day of the week.
Program
Mode
EEC
Settings
Conventional (1 Cool / 1 Heat)
Zone Control (1 Cool / 1 Heat) Conventional (2 Cool / 2 Heat)
Heat EEC *5 0 -10Heat EEC *5 0 - 10
Cool EEC *50-10 EEC *5 0 - 10
2nd Stage Differential
*2 1 -
10
Start Delay (Minutes)
*10 0
-
4hr:15min
Heat Pump and Dual Fuel Heat
Pump (1 Cool / 2 Heat)
Geothermal Heat Pumpand Geothermal
Dual Fuel Heat Pump (1 Cool /2 Heat)
Heat EEC *5 0-10 Heat EEC *5 0 - 10
Cool EEC *5 0 -
10 Cool EEC *5 0 -
10
Aux Heat Differential
*2 1 -
10 Aux Heat Differential
*2 1 -
10
Start Delay(Minutes)
*5 0 -
4hr:15min
Start Delay
(Minutes)
*45
0
-
4hr:15min
Heat Pumpand Dual Fuel Heat Pump
(2 Cool / 3 Heat)
Geothermal
Heat Pump and Geothermal
Dual Fuel Heat Pump (2Cool / 3 Heat)
Heat EEC *5 0 - 10 Heat EEC *5 0 -
10
Cool EEC *5 0 -
10 Cool EEC *5 0 - 10
2nd Stage Differential
*1 1 -
10 2nd Stage Differential
*1 1 - 10
Start Delay (Minutes)
*5 0
-4hr:15min Start Delay (Minutes)
*45
0
-4hr:15min
Aux Heat Differential
*2 1 - 10
A
ux Heat Differential
*2 1 -
10
Start Delay (Minutes)
*10 0
-
4hr:15min Start Delay (Minutes)
*3hr 0
-4hr:15min
EEC
Settings
ANTICIPATOR CONTROL
The Anticipator Control settings are used to “anticipate” the need to turn the system on or off before the
temperature is actually at the setting. As humans, we perceive temperature as a combination of heat in
the air and heat radiated from the walls and surroundings.
The thermostat also measures a combination of air and wall temperature. When heating, the air
temperature rises faster than the wall temperature. The thermostat will turn the heat off briefly to prevent
overheating the air while the wall temperature catches up.
When cooling, the thermostat will periodically run the cooling system to circulate the air and remove
humidity when the temperature is close to, but not above the desired cool setting.
Because of the PID algorithm and auto balance routine which monitors the performance of the HVAC
system, the anticipator settings are automatic by default. However, the anticipator settings may be
adjusted if desired.
Heat Anticipator: This adjusts the tendency of the thermostat to turn the heating unit off before the
desired heat setting is reached. This is done to avoid overheating the air while the walls and furniture
catch up. A setting of 0-4 is intended for fast reacting heating systems, such as forced air. A setting
of 6-10 is intended for slow reacting heating systems, such as radiant heat. A setting of 5 is used for
automatic anticipation.
A lower setting will decrease the tendency to turn off the heating system before the desired heat setting
is reached. If the heating system response time is slower, as are most radiant heating systems, a higher
number will help maintain an even space temperature.
Cool Anticipator: This adjusts the tendency of the HVAC to run the cooling system to refresh and
dehumidify the air before the temperature rises to the desired cool settings. A setting of 0-4 is intended
for more humid climates and will increase the tendency for the cooling system to turn on to refresh and
dehumidify the air. A setting of 6-10 is intended for dry climates and will decrease the tendency to run the
cooling system below the cooling setting. A setting of 5 is used for automatic anticipation.
2nd/3rd Stage Extended On: When enabled and if any 2nd or 3rd stage turns on, it will remain on until
the heat/cool is satisfied, regardless of the settings for any stage differentials. The default setting is off.
Cool Anticipator*5
Heat Anticipator*5
2
nd
/3
rd
Sta
g
e Extended On *Off
TROUBLESHOOTING TIPS CONTINUED
SYMPTOM
ACTION TO TAKE
Thermostat Dead Check power to the thermostat
Check wiring diagrams
SYMPTOM
ACTION TO TAKE
Heat Or Cool Inoperative
1. Check for break in W or Y wire
2. Allow minimum off time to pass
3. Check system options for correct settings
4. If arrow is blinking, wait until startup delay expires
5. Mode is Off (Select Heat, Cool, or Auto)
6. Remote s
y
stem is overridin
g
thermostat
SYMPTOM ACTION TO TAKE
Control By Remote
System Not Working
1. Check wires and connections to the section marked
“REMOTE SYSTEM WIRING DIAGRAMS”
2. Check thermostat address setting
3. Check communications mode setting
4. Check setup of the remote system
Ensure that all setup items for the thermostat and the remote system are set to the
proper configurations for communication
SYMPTOM
ACTION TO TAKE
Temperature Reading
Incorrect
1. Allow 30 minutes for thermostat to adjust.
2. Ad
j
ust calibration offset
3. Change setup option to display ºF or ºC
After installation, allow the thermostat up to 30 minutes for an accurate temperature
readin
g
SYMPTOM
ACTION TO TAKE
Display Problem 1. Cycle power to the thermostat (R).
SYMPTOM ACTION TO TAKE
Aux Heat On Too Often
1. Heat Pump is not able to meet load due to cold weather
2. Thermostat is in EM Heat mode – Set thermostat to Heat or
Auto mode
In EM Heat mode, onl
y
the auxiliar
y
heat is turned on
SYMPTOM
ACTION TO TAKE
Heat Pump Heats In
Cool Mode & Cools In
Heat Mode
1. Reversing valve is connected to wrong terminal - move
wire from B to O or from O to B
The wires connecting the reversing valve may be reversed
1.
2.
TEMPERATURE SENSORS
The Temperature Sensor settings are used to configure the internal temperature sensor and optional
remote temperature sensors that are connected to the thermostat. Any temperature sensors that are set
as the same type (i.e. indoor or outdoor) will display the average temperature reading among the sensors.
Internal Sensor: This will enable or disable the onboard temperature sensor for indoor use only. *Enabled
External Sensor 1: This will enable the external temperature sensor for indoor or outdoor use. All indoor
and outdoor temperatures are averaged between all sensors of the same type. *Disabled
ENERGY OPTIONS
The Energy Options are used to set the fan cycle option and to configure how setbacks are changed.
ZIGBEE NETWORK
The ZigBee Network menu is to find new load control devices and devices with metering capabilities on
the ZigBee Network and to clear currently configured load control devices or metering devices from the
thermostat.
ZIGBEE SETUP
Each RC-1500 thermostat must be individually enrolled. To start the enrollment process on an RC-1500:
1. Press the “Enroll” button. The enrollment process will begin. “Finding Network” will be displayed.
2. To view the Join Details, press the “Details” button.
Find
Loads
When new load control devices are added to the ZigBee network, select “Find
Loads”. The thermostat will search for new load control devices. Any load control
devices that are found will be displayed on the Loads menu.
Find
Meters
When new devices with metering capabilities are added to the ZigBee network,
select “Find Meters ”. The thermostat will search for new metering devices.
The
data from any metering devices that are found will be displayed on the Energy View
screen .
Clear
Loads
Clear Loads is used to clear currently configured load control devices from the
thermostat.
Clear
Meters
Clear Meters is used to clear currently configured metering devices from the
thermostat.
*On: Allow the fan to come on to circulate the air during the restricted portion of the
cycle. The fan will only come on when the thermostat is in cool mode.
Off:The fan remains off durin
g
the restricted portion of the c
y
cle.
*TOU: Setbacks and Cycles are changed by TOU settings.
Fan on
during cycle
off time
Setbacks
and Cycles
change by
INSTALLER LOCKOUT
When this option is set to [Yes], the “Installation Settings” menu option is removed from the “Setup” menu
to prevent access to these settings. To access the “Installation Settings” menu, from “Setup” menu,
simultaneously press Task Buttons 1 (left), 2 (center), and the Scroll Wheel; “Installation Settings” will
appear.
Balance Setpoints (Dual Fuel Heat Pump)
The Balance Setpoints are used to determine when the auxiliary heat is used in a dual fuel heat pump
system.
• If the outdoor temperature is above the “Upper Balance Setpoint” (45°F by default), the heat pump is
used exclusively.
• If the outdoor temperature falls below the “Upper Balance Setpoint” but is above the “Lower Balance
Setpoint” (35°F by default) and if the heat pump is unable to heat at a rate of 5°s per hour or better, the
heat pump will turn off and the auxiliary heat will be used until the temperature rises above the “Upper
Balance Setpoint” or the call for heat has been satisfied.
• If the outdoor temperature falls below the “Lower Balance Setpoint”, the heat pump will turn off and the
auxiliary heat will be used until the call for heat has been satisfied.
FACTORY RESET
This option will restore all system settings and programming to factory fresh configuration. Read the
warning and then press [Yes] to proceed or [Cancel] to return to Installation Settings.
STAGE SETTINGS
NOTE: Before operating the thermostat, the “Cool Stages” and “Heat Stages” must be configured.
The thermostat can be configured with the following stage settings:
EEC CONTROL
The EEC Settings are used to configure Energy Efficient Control, 2nd Stage Differential, and Auxiliary Heat
Differential. Not all of these features apply to all thermostat configurations. Only the features that apply to the
current configuration of System Type and Stage Settings will be available when this menu is selected.
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 the
thermostat determines that Stage 1 is able to heat or cool at a rate of 5°s 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. Under
these conditions, Stage 1 will run continuously and Stage 2 will cycle on and off as needed. In extremely cold
conditions, the auxiliary heating will be used when Stage 1 and/or Stage 2 is not heating at a sufficient rate.
EEC: This item configures Energy Efficient Control (EEC). EEC continually monitors the performance of the
HVAC system and uses a PID algorithm and auto balance routine to achieve comfort while saving energy. A
setting of 0 will disable EEC. When EEC is disabled, the RC-1500 will attempt to maintain the temperature
within 0.5°s F of the setpoint. A lower setting of 2-3 can be used for slow reacting sources (e.g. radiant heat)
and higher setting of 7-8 for fast reacting sources (e.g. forced air). The default setting is 5.
2nd Stage Differential: This determines how far from the setpoint the temperature has to be before the second
stage turns on.
Auxiliary Heat Differential: This determines how far from the setpoint the temperature has to be before the
auxiliary heat turns on. This is only available for heat pump systems.
Start Delay (Minutes): This item sets the minimum amount of time the heating system must run before the
Auxiliary Heat Stage is used. To use this start delay, EEC must be enabled and Hold must be off.
Cool Stages The number of cool stages the HVAC system can support. The default
setting is 1.
Heat Stages The number of heat stages the HVAC system can support. Auxiliary heat
is included in this number for heat
p
um
p
s. The default settin
g
is 1.
EEC
Settings
Conventional (1 Cool / 1 Heat)
Zone Control (1 Cool / 1 Heat) Conventional (2 Cool / 2 Heat)
Heat EEC *5 0 -10Heat EEC *5 0 - 10
Cool EEC *50-10 EEC *5 0 - 10
2nd Stage Differential
*2 1 -
10
Start Delay (Minutes)
*10 0
-
4hr:15min
Heat Pump and Dual Fuel Heat
Pump (1 Cool / 2 Heat)
Geothermal Heat Pumpand Geothermal
Dual Fuel Heat Pump (1 Cool /2 Heat)
Heat EEC *5 0-10 Heat EEC *5 0 - 10
Cool EEC *5 0 -
10 Cool EEC *5 0 -
10
Aux Heat Differential
*2 1 -
10 Aux Heat Differential
*2 1 -
10
Start Delay(Minutes)
*5 0 -
4hr:15min
Start Delay
(Minutes)
*45
0
-
4hr:15min
Heat Pumpand Dual Fuel Heat Pump
(2 Cool / 3 Heat)
Geothermal Heat Pump and Geothermal
Dual Fuel Heat Pump (2Cool / 3 Heat)
Heat EEC *5 0 - 10 Heat EEC *5 0 -
10
Cool EEC *5 0 -
10 Cool EEC *5 0 - 10
2nd Stage Differential
*1 1 -
10 2nd Stage Differential
*1 1 - 10
Start Delay (Minutes)
*5 0
-4hr:15min Start Delay (Minutes)
*45
0
-4hr:15min
Aux Heat
Differential
*2 1 - 10
A
ux Heat Differential
*2 1 -
10
Start Delay (Minutes)
*10 0
-
4hr:15min Start Delay (Minutes)
*3hr 0
-4hr:15min
EEC
Settings
Copyright and Trademark Information
This document and all its contents herein are subject to and protected by international copyright and
other intellectual property rights and are the property of Leviton Manufacturing Co., Inc, its subsidiaries,
affiliates and/or licensors.
Use herein of third party trademarks, service marks, trade names, brand names and/or product names
are for informational purposes only, are/may be the trademarks of their respective owners; such use is
not meant to imply affiliation, sponsorship, or endorsement.
No part of this document may be reproduced, transmitted or transcribed without the express written
permission of Leviton Manufacturing Co., Inc.
FOR CANADA ONLY
For warranty information and/or product returns, residents of Canada should contact Leviton in writing
at Leviton Manufacturing of Canada Ltd to the attention of the Quality Assurance Department,
165 Hymus Blvd, Pointe-Claire (Quebec), Canada H9R 1E9 or by telephone at 1 800 405-5320.
SYMPTOM
ACTION TO TAKE
Thermostat Dead Check power to the thermostat
Check wiring diagrams
SYMPTOM
ACTION TO TAKE
Heat Or Cool Inoperative
1. Check for break in W or Y wire
2. Allow minimum off time to pass
3. Check system options for correct settings
4. If arrow is blinking, wait until startup delay expires
5. Mode is Off (Select Heat, Cool, or Auto)
6.
Remote s
y
stem is overridin
g
thermostat
SYMPTOM
ACTION TO TAKE
Control By Remote
System Not Working
1. Check wires and connections to the section marked
“REMOTE SYSTEM WIRING DIAGRAMS”
2. Check thermostat address setting
3. Check communications mode setting
4. Check setup of the remote system
Ensure that all setup items for the thermostat and the remote system are set to the
proper configurations for communication
SYMPTOM
ACTION TO TAKE
Temperature Reading
Incorrect
1. Allow 30 minutes for thermostat to adjust.
2. Ad
j
ust calibration offset
3. Change setup option to display ºF or ºC
After installation, allow the thermostat up to 30 minutes for an accurate temperature
reading
SYMPTOM
ACTION TO TAKE
Display Problem 1. Cycle power to the thermostat (R).
SYMPTOM ACTION TO TAKE
Aux Heat On Too Often
1. Heat Pump is not able to meet load due to cold weather
2. Thermostat is in EM Heat mode – Set thermostat to Heat or
Auto mode
In EM Heat mode, onl
y
the auxiliar
y
heat is turned on
SYMPTOM
ACTION TO TAKE
Heat Pump Heats In
Cool Mode & Cools In
Heat Mode
1. Reversing valve is connected to wrong terminal - move
wire from B to O or from O to B
The wires connecting the reversing valve may be reversed
1.
2.
TROUBLESHOOTINGTIPS
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