Aprilaire 8570 Thermostat User Manual

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Premium Programmable Thermostat  
Safety & Installation  
Instructions  
Model 8570  
READ AND SAVE THESE INSTRUCTIONS  
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TABLE OF CONTENTS  
PAGE  
PAGE  
PAGE  
PAGE  
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
WIRE REQUIREMENTS. . . . . . . . . . . . . . . . . . . . . . . . . 2  
Diagram 4 – Boiler with AC . . . . . . . . . . . . . . . . . 12  
9. OPTIONAL – INSTALL AN INDOOR  
TEMPERATURE SENSOR . . . . . . . . . . . . . . . . . . 24  
11. CUSTOMIZE THE  
APPLICATION SETTINGS . . . . . . . . . . . . . . . . 36  
Programmable or Non-Programmable . . . . . . . . 36  
Differentials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37  
Offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38  
Deadband . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38  
Progressive Recovery . . . . . . . . . . . . . . . . . . . . . 39  
Balance Points (Heat Pumps Only) . . . . . . . . . . . 40  
Input Dealer Contact Information . . . . . . . . . . . . 41  
Blower Extension for Humidity Control . . . . . . . 42  
Diagram 5 – Radiant Floor 1st Stage Heat  
with Furnace 2nd Stage Heat and AC . . . . . . . . . 13  
10. THERMOSTAT STARTUP . . . . . . . . . . . . . . . . . 26  
1
2
3
. SELECT A MOUNTING LOCATION. . . . . . . . . . . 3  
Diagram 6 – Single-Stage Heat Pump with  
Single-Stage Back Up Heat . . . . . . . . . . . . . . . . . 14  
Thermostat Set Up . . . . . . . . . . . . . . . . . . . . . . . . 27  
– Heat Only, Cool Only . . . . . . . . . . . . . . . . . . . . . .27  
– Number of Auxiliary Heat Stages . . . . . . . . . . .27  
. OPEN THE THERMOSTAT . . . . . . . . . . . . . . . . . . 4  
. MOUNT THE THERMOSTAT BASE  
Diagram 7 – Single-Stage Heat Pump with  
Two-Stage Back Up Heat . . . . . . . . . . . . . . . . . . . 15  
TO THE WALL . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5  
Verify Outdoor Temperature Sensor . . . . . . . . . . . 27  
Check Fan Operation . . . . . . . . . . . . . . . . . . . . . . . 28  
Verify ADHC Connection . . . . . . . . . . . . . . . . . . . . 28  
Check Heating Operation . . . . . . . . . . . . . . . . . . . 30  
Check Cooling Operation . . . . . . . . . . . . . . . . . . . 32  
Check Emergency Heat Operation  
4. SET THE CONFIGURATION DIP SWITCHES  
Diagram 8 – Two-Stage Heat Pump . . . . . . . . . . . 16  
ON THE THERMOSTAT CIRCUIT BOARD . . . . . 6  
6
7
8
. OPTIONAL – WIRE THE EVENT  
TRIGGERED OUTPUT (ETO) . . . . . . . . . . . . . . . 17  
5. WIRE THE THERMOSTAT TO THE  
HVAC EQUIPMENT . . . . . . . . . . . . . . . . . . . . . . . . 8  
. OPTIONAL – INSTALL AN OUTDOOR  
TEMPERATURE SENSOR . . . . . . . . . . . . . . . . . . 19  
Diagram 1 – Single-Stage Furnace and AC . . . . . . 9  
Diagram 2 – Two-Stage Furnace and AC . . . . . . . 10  
Diagram 3 – Two-Stage Roof Top Unit . . . . . . . . 11  
Monitors – Air Filter, Service Humidifier,  
UV Lamp, Service HVAC . . . . . . . . . . . . . . . . . . . 43  
. OPTIONAL – INSTALL AN AUTOMATIC  
DIGITAL HUMIDIFIER CONTROL (ADHC) . . . . 22  
(Heat Pumps Only) . . . . . . . . . . . . . . . . . . . . . . . . 34  
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SAFETY INSTRUCTIONS  
MODEL 8570 SPECIFICATIONS  
Read this Installation Manual before beginning installation of the Aprilaire® 8570 Thermostat. For questions call  
Research Products Corporation at (800) 334-6011.  
Electrical  
Thermostat Voltage:  
24-volts ± 20% AC or DC  
WARNING  
Total Load Current:  
5A  
2A  
Single Output Load Current:  
1
2
3
. 120 Volts may cause serious injury from electrical shock. Disconnect electrical power to the HVAC equipment before  
starting installation. This thermostat is not a 120-volt (line voltage) device.  
Thermal  
. Improper installation may cause serious injury from electrical shock. This product must be installed by a qualified  
heating and air conditioning contractor in accordance with NEC Standards and applicable local and state codes.  
Operating Range:  
Display Accuracy:  
32°F – 99°F (0 C – 37 C)  
±1°F between 60°F and 80°F, ±2°F outside this range  
±1°F  
. Mercury is toxic and may be hazardous to health. Any replaced thermostats containing mercury must be disposed of  
properly. Contact local authorities for disposal information.  
Control Accuracy:  
Control Range Heat:  
Control Range Cool:  
Heat/Cool Deadband:  
40°F – 88°F (4 C – 30 C)  
42°F – 90°F (6 C – 32 C)  
Adjustable 2° or 5° F or C  
Adjustable 1°F – 4°F (1°F default)  
Adjustable 1°F – 4°F (1°F default)  
Adjustable 1°F – 4°F  
1
st Stage Differential:  
2
nd Stage Differential:  
Temperature Offset:  
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1 -  
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WIRE REQUIREMENTS  
(1) SELECT A MOUNTING LOCATION  
Figure 1 and the table show the number of wires that must be available at the thermostat in stand-alone thermostat systems  
If installing the thermostat alone…  
If installing an indoor temperature sensor…  
®
(
i.e. not as part of an Aprilaire Model 6504 Intelligent Zoned Comfort System). Figure 1 shows optional connections to both  
•
•
•
Mount on an interior wall, in a frequently occupied space.  
Keep the thermostat 18" from an outside wall.  
Mount the thermostat approximately 5 feet above the floor.  
Height requirements are different for compliance with the  
Americans with Disabilities Act (ADA) – 48" maximum height  
for forward reach and 54" maximum height for side reach.  
• Mount the thermostat where it can be readily accessed.  
Note that the backlighting illuminates whenever a button  
is pressed.  
®
an outdoor temperature sensor and an Aprilaire Automatic Digital Humidifier Control (ADHC), but only one or the other is  
necessary. All wire is standard 18-24 gauge thermostat cable.  
Application  
# Wires  
Diagram (Page)  
1 (9)  
• Thermostat can be mounted on a vertical junction box (j-box).  
Figure 1 – Thermostat Wire  
• DO NOT mount the thermostat where the operating range  
temperatures will be exceeded (i.e. attic or unventilated  
equipment room).  
Single-Stage Furnace/AC  
Two-Stage Furnace/AC  
Two-Stage Roof Top Unit  
Boiler w/AC (2-transformer)  
5
7
7
6
6
OPTIONAL –  
AUTOMATIC  
2 (10)  
HVAC  
•
•
Thermostat can be mounted to a vertical junction box (j-box).  
DO NOT mount the thermostat:  
DIGITAL HUMIDIFIER  
CONTROL  
EQUIPMENT  
3 (11)  
•
Mount the sensor in the same location as if installing a  
thermostat alone.  
(
ADHC)  
4 (12)  
–
behind doors, in corners or other dead air spaces.  
SEE  
OPTIONAL –  
INDOOR  
TEMPERATURE  
SENSOR  
OPTIONAL –  
OUTDOOR  
2-WIRES  
Radiant 1st Stage Heat,  
Furnace 2nd Stage and AC  
5 (13)  
TABLE  
– in direct sunlight or near lamps, appliances or other  
sources of heat.  
TEMPERATURE  
SENSOR  
Single-Stage Heat Pump  
6
7
6 (14)  
7 (15)  
–
–
–
on an outside wall or wall exposed to an unconditioned  
space (i.e. garage).  
in the flow path of a supply register, in stairways or near  
outside doors.  
on a wall where concealed pipes or ductwork could  
influence the sensor.  
2
-WIRES  
2-WIRES  
Single-Stage Heat Pump  
w/Two Stages Aux. Heat  
MODEL 8570  
THERMOSTAT  
Two-Stage Heat Pump  
8
8 (16)  
When this thermostat is connected to a Model 6504 as  
shown in Figure 2, only one four-wire cable need be run  
from the thermostat to the Model 6504. Use standard  
Figure 2 –  
Model 6504  
Wire  
MODEL 8570  
THERMOSTAT  
4
-WIRES  
MODEL 6504  
– near sources of electrical interference such as arcing  
switch contacts.  
18-24 gauge thermostat cable.  
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2 -  
- 3 -  
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(2) OPEN THE THERMOSTAT  
(3) MOUNT THE THERMOSTAT BASE TO THE WALL  
Use your hands to pull the thermostat face off of the base. Separate one side at a time. There are latches on  
either side of the thermostat.  
1. Place the wire opening in the base over the wire entry  
hole in the wall. Level the base (for appearance only)  
Figure 4  
and mark the screw locations. See Figure 4.  
If needed, the thermostat can be pried from the base by inserting a flat-head screwdriver (see Figure 3).  
2
. Use the supplied screws and wall anchors to mount  
the thermostat to the wall. It is recommended that wall  
anchors be used for installation to drywall/sheet rock.  
CAUTION  
Figure 3  
Loss of internal programs  
may result from static  
discharge to thermostat  
circuit board. Avoid  
• Drill a 3/16" hole for wall anchors.  
•
Drill a 3/32" starter hole for screws only.  
3
. For junction box mounting, screws are field supplied.  
The thermostat can be installed on a vertical j-box.  
touching the circuit board  
and touch a grounded  
metal object before  
4
. Seal the wire entry hole(s) with caulk, drywall putty  
or insulation to prevent drafts from inside the wall  
cavity from affecting thermostat performance.  
handling the thermostat.  
90-1027  
USE THE SCREWDRIVER TO SEPARATE THE  
HOUSINGS. REPEAT ON THE REMAINING 3 SLOTS.  
NOTE: THE HOUSINGS WILL NOT COMPLETELY  
SEPARATE. PULL THE HOUSINGS APART WITH  
YOUR HANDS TO COMPLETELY SEPARATE.  
CAUTION  
INSERT SCREWDRIVER INTO 1 OF  
Minimize wire entry hole size and seal the hole – drafts from inside the wall could affect temperature readings.  
4
2
SLOTS (2 ARE ON THE TOPSIDE,  
ARE ON THE BOTTOM SIDE)  
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4 -  
- 5 -  
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MULTI or SINGLE – When set to single, the second stage  
GAS or ELECT – When set to ELECT, the fan terminal (G) will  
(
4) SET THE CONFIGURATION DIP SWITCHES ON THE THERMOSTAT CIRCUIT BOARD  
outputs (Y2 and W2) do not energize.  
be energized on a call for heat.  
•
Set to SINGLE for single-stage furnace/AC applications or  
single-stage compressor heat pump systems.  
• Set to ELECT when the heat source is electric  
(such as strip heat).  
There are four dip switches  
located on the back of the  
thermostat (on the circuit  
board) that must be set to  
properly configure the  
Figure 5  
• Set to MULTI if the furnace or air conditioner is two-stage  
or if the heat pump has a two-stage compressor.  
• Set to GAS when the heat source is fossil fuel (oil, propane,  
natural gas). For heat pumps, the compressor terminal(s)  
will de-energize before the auxiliary heat terminal (W1) is  
energized, thus acting as a fossil fuel kit.  
HEAT/COOL or HEAT PUMP – When set to HP the compressor  
terminal (Y1) is the first stage output for both heating and cooling.  
thermostat for operation  
with the equipment it is to  
control. Figure 5 shows  
the default position for the  
four switches.  
O or B – For heat pumps only, this switch sets whether the  
O/B reversing valve output is energized during a cooling call  
or heating call.  
•
•
Set to HP when installed with heat pumps.  
Set to H/C when installed with furnace/AC systems,  
roof top units or boiler/AC combination systems.  
•
Set to O if heat pump reversing valve is to be energized  
in cooling.  
•
Set to B if heat pump reversing valve is to be energized  
in heating.  
SINGLE  
HP  
ELECT  
O
MULTI  
HC  
GAS  
B
STOP!  
If installing this thermostat as part of a Model 6504 Intelligent Zoned Comfort System, refer to the Model 6504  
Installation Manual for wiring and checkout procedures. Continue Model 6504 installation with Step 11 (page 36).  
If wiring this thermostat directly to the HVAC equipment or standard zone control panel, continue with Step 5.  
90-1028  
-
6 -  
- 7 -  
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APRILAIRE MODEL  
570 THERMOSTAT  
8
SUPPLIED JUMPER  
(
5) WIRE THE THERMOSTAT TO THE HVAC EQUIPMENT  
W2  
W1  
RH  
R
RC  
G
Y1  
Y2  
B
FURNACE  
THERMOSTAT  
CONFIGURATION  
SWITCH SETTINGS  
1
ST  
WARNING  
120 volts may cause serious injury from electrical shock. Disconnect electrical power to the furnace  
and air conditioner before starting installation. This thermostat is not a 120 volt (line voltage) device.  
STAGE  
HEAT  
W1  
Y1  
SINGLE  
HP  
1
2
3
4
MULTI  
HC  
1
ST STAGE  
COOL  
ELECT  
O
GAS  
B
1
2
3
4
. Run a cable with the correct number of wires  
FAN  
Application  
# Wires  
Diagram (Page)  
1 (9)  
G
C
R
RELAY  
(see table) from the thermostat to the HVAC equipment.  
ELECT/GAS - SET TO  
ELECT FOR ELECTRIC  
HEAT, SET TO GAS FOR  
FOSSIL FUEL HEAT  
O
C
Single-Stage Furnace/AC  
Two-Stage Furnace/AC  
Two-Stage Roof Top Unit  
Boiler w/AC (2-transformer)  
5
7
7
6
6
. Strip 1/4" of insulation from the end of the wires to  
be connected to the thermostat.  
2
4
2 (10)  
VAC  
I+  
I-  
AHC  
CONNECTION  
3 (11)  
. Strip no more insulation than is required to make a  
sound electrical connection at the HVAC equipment.  
1
20  
4 (12)  
VAC  
ZB  
ZA  
6504  
CONNECTION  
. Wire the thermostat to the HVAC equipment according  
to the wiring schematic appropriate for your HVAC  
equipment.  
Radiant 1st Stage Heat,  
Furnace 2nd Stage and AC  
5 (13)  
OUTDOOR (ODT)  
& INDOOR (IDS)  
1
ST  
STG  
COOL  
GND  
Single-Stage Heat Pump  
6
7
6 (14)  
7 (15)  
Y1  
ODT TEMPERATURE  
IDS  
Single-Stage Heat Pump  
w/Two Stages Aux. Heat  
SENSORS  
C
COM  
NO  
NC  
EVENT  
TRIGGERED  
OUTPUT  
(ETO)  
Two-Stage Heat Pump  
8
8 (16)  
AIR CONDITIONER  
Diagram 1: Single-Stage Furnace and AC  
-
8 -  
- 9 -  
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APRILAIRE MODEL  
8570 THERMOSTAT  
SUPPLIED JUMPER  
TWO-STAGE FURNACE  
APRILAIRE MODEL  
8570 THERMOSTAT  
TWO-STAGE ROOF TOP UNIT  
(RTU)  
SUPPLIED  
JUMPER  
W2  
W1  
RH  
R
RC  
G
Y1  
Y2  
B
2
ND  
THERMOSTAT  
CONFIGURATION  
SWITCH SETTINGS  
STAGE  
HEAT  
W2  
W1  
Y1  
W2  
W1  
RH  
R
RC  
G
Y1  
Y2  
B
2
ND  
THERMOSTAT  
CONFIGURATION  
SWITCH SETTINGS  
1
ST  
STAGE  
HEAT  
W2  
W1  
STAGE  
HEAT  
1
ST  
SINGLE  
HP  
1
2
3
4
MULTI  
HC  
STAGE  
HEAT  
1
ST STAGE  
COOL  
SINGLE  
HP  
1
2
3
4
MULTI  
HC  
1
ST  
2
ND STAGE  
COOL  
ELECT  
O
GAS  
B
Y2  
STAGE  
COOL  
Y1  
Y2  
2ND  
STAGE  
COOL  
ELECT  
O
GAS  
B
FAN  
RELAY  
G
C
R
ELECT/GAS - SET TO  
ELECT FOR ELECTRIC  
HEAT, SET TO GAS FOR  
FOSSIL FUEL HEAT  
O
C
ELECT/GAS - SET TO  
ELECT FOR ELECTRIC  
HEAT, SET TO GAS FOR  
FOSSIL FUEL HEAT  
2
VAC  
4
FAN  
RELAY  
O
C
G
C
R
I+  
I-  
AHC  
CONNECTION  
24  
VAC  
I+  
AHC  
CONNECTION  
1
20  
VAC  
I-  
ZB  
ZA  
6504  
CONNECTION  
ZB  
ZA  
6504  
CONNECTION  
1
20  
OUTDOOR (ODT)  
VAC  
GND  
&
INDOOR (IDS)  
1
ST  
ODT TEMPERATURE  
OUTDOOR (ODT)  
& INDOOR (IDS)  
ODT TEMPERATURE  
SENSORS  
EVENT  
GND  
STG  
Y1  
SENSORS  
IDS  
COOL  
2
ND  
COM  
NO  
EVENT  
TRIGGERED  
OUTPUT  
IDS  
STG  
COOL  
Y2  
C
COM  
NO  
NC  
NC  
(ETO)  
TRIGGERED  
OUTPUT  
(ETO)  
TWO-STAGE AIR CONDITIONER  
Diagram 2: Two-Stage Furnace and AC  
Diagram 3: Two-Stage Roof Top Unit  
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10 -  
- 11 -  
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REMOVE RH PRONG  
FROM SUPPLIED JUMPER  
HEAT  
RELAY  
W
2
4V COM  
1
2
3
4
5
6
7
8
9
W
R
APRILAIRE MODEL  
8570 THERMOSTAT  
C
R
E/W2  
2
VAC  
4
HEAT  
RELAY  
W
W2  
W1  
RH  
R
RC  
G
Y1  
Y2  
B
SUPPLIED JUMPER  
THERMOSTAT  
CONFIGURATION  
SWITCH SETTINGS  
C
R
24  
VAC  
120  
Y
VAC  
APRILAIRE MODEL  
8
570 THERMOSTAT  
Y
BOILER  
SINGLE  
HP  
1
2
3
4
MULTI  
HC  
120  
VAC  
W2  
W1  
RH  
R
RC  
G
Y1  
Y2  
B
O
ELECT  
O
GAS  
B
RADIANT FLOOR HEAT  
FAN  
RELAY  
G
MODEL 8024 24-VOLT  
RELAY PACK (not supplied)  
1ST  
STAGE  
HEAT  
W1  
Y1  
1
ST STAGE  
COOL  
ELECT/GAS - SET TO  
ELECT FOR HOT WATER  
COIL HEAT, SET TO GAS  
FOR RADIANT HEAT  
Y1  
O
C
1ST STAGE  
COOL  
C
R
FAN  
RELAY  
G
C
R
THERMOSTAT  
CONFIGURATION  
SWITCH SETTINGS  
24  
I+  
I-  
AHC  
CONNECTION  
O
C
VAC  
2
4
VAC  
SINGLE  
HP  
1
2
3
4
MULTI  
HC  
ZB  
ZA  
6504  
CONNECTION  
I+  
I-  
AHC  
CONNECTION  
120  
VAC  
ELECT  
O
GAS  
B
1
20  
INDOOR AIR HANDLER  
OUTDOOR (ODT)  
VAC  
ZB  
ZA  
6504  
CONNECTION  
GND  
&
INDOOR (IDS)  
FURNACE  
ODT TEMPERATURE  
ELECT/GAS - SET TO  
ELECT FOR ELECTRIC  
FURNACE, SET TO GAS  
FOR FOSSIL FUEL  
FURNACE  
OUTDOOR (ODT)  
& INDOOR (IDS)  
1
ST  
SENSORS  
GND  
IDS  
1ST  
STG  
COOL  
STG  
COOL  
Y1  
C
ODT TEMPERATURE  
Y1  
EVENT  
TRIGGERED  
OUTPUT  
IDS  
SENSORS  
COM  
NO  
C
COM  
NO  
NC  
EVENT  
TRIGGERED  
OUTPUT  
(ETO)  
NC  
(ETO)  
AIR CONDITIONER  
AIR CONDITIONER  
Diagram 4: Boiler with AC  
Diagram 5: Radiant Floor 1st Stage Heat with Furnace 2nd Stage Heat and AC  
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12 -  
- 13 -  
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APRILAIRE MODEL  
8570 THERMOSTAT  
APRILAIRE MODEL  
8570 THERMOSTAT  
SUPPLIED  
JUMPER  
INDOOR UNIT - AIR HANDLER  
SUPPLIED JUMPER  
INDOOR UNIT - AIR HANDLER  
W2  
W1  
RH  
R
RC  
G
Y1  
Y2  
B
THERMOSTAT  
CONFIGURATION  
SWITCH SETTINGS  
2
ND STAGE  
W2  
W1  
RH  
R
RC  
G
Y1  
Y2  
B
W2  
THERMOSTAT  
CONFIGURATION  
SWITCH SETTINGS  
1
ST STAGE  
AUX. HEAT  
W1  
AUX. HEAT  
1ST STAGE  
AUX. HEAT  
W1  
Y1  
COMPRESSOR Y1  
SINGLE  
HP  
1
2
3
4
MULTI  
HC  
SINGLE  
HP  
1
MULTI  
HC  
2
3
4
ELECT  
O
GAS  
B
COMPRESSOR  
ELECT  
O
GAS  
B
FAN  
G
FAN  
RELAY  
RELAY  
G
C
R
SINGLE/MULTI – SET TO SINGLE  
FOR SINGLE STAGE HEAT PUMP  
SINGLE/MULTI – SET TO SINGLE  
FOR SINGLE STAGE HEAT PUMP  
O
C
C
O
C
24  
24  
VAC  
ELECT/GAS - SET TO ELECT FOR  
ELECTRIC AUXILIARY HEAT, SET  
TO GAS FOR FOSSIL FUEL (DUAL  
FUEL) AUXILIARY HEAT  
R
VAC  
ELECT/GAS - SET TO ELECT FOR  
ELECTRIC AUXILIARY HEAT, SET  
TO GAS FOR FOSSIL FUEL (DUAL  
FUEL) AUXILIARY HEAT  
I+  
I-  
AHC  
CONNECTION  
I+  
I-  
AHC  
CONNECTION  
120  
120  
VAC  
VAC  
ZB  
ZA  
6504  
CONNECTION  
O/B – SET TO “O” IF HEAT PUMP  
REVERSING VALVE MUST BE  
ENERGIZED WHEN COOLING,  
SET TO “B” IF IT IS TO BE  
ZB  
ZA  
6504  
CONNECTION  
O/B – SET TO “O” IF HEAT PUMP  
REVERSING VALVE MUST BE  
ENERGIZED WHEN COOLING,  
SET TO “B” IF IT IS TO BE  
W1  
Y1  
OUTDOOR (ODT)  
&
W1  
Y1  
DEFROST  
GND  
ENERGIZED IN HEATING  
DEFROST  
OUTDOOR (ODT)  
&
INDOOR (IDS)  
GND  
ENERGIZED IN HEATING  
INDOOR (IDS)  
ODT TEMPERATURE  
IDS  
1
ST STAGE  
COMP.  
AUXILIARY HEAT SET UP  
1. WITH THERMOSTAT IN OFF  
MODE, PRESS AND HOLD THE  
UP AND DOWN BUTTONS FOR  
3 SECONDS TO ENTER THE  
ADVANCED SETTINGS MENU.  
2. SCROLL DOWN AND  
HIGHLIGHT THE “AUXILIARY  
HEAT SETUP” OPTION AND  
PRESS SELECT.  
1ST STAGE  
COMP.  
ODT TEMPERATURE  
SENSORS  
EVENT  
SENSORS  
AUXILIARY HEAT SET UP  
IDS  
1
. WITH THERMOSTAT IN OFF  
MODE, PRESS AND HOLD THE  
UP AND DOWN BUTTONS FOR  
3 SECONDS TO ENTER THE  
ADVANCED SETTINGS MENU.  
COM  
NO  
NC  
EVENT  
REV.  
VALVE  
TRIGGERED  
OUTPUT  
(ETO)  
REV.  
VALVE  
COM  
NO  
NC  
O
O
TRIGGERED  
OUTPUT  
(ETO)  
L
L
2. SCROLL DOWN AND  
SERVICE  
SERVICE  
HIGHLIGHT THE “AUXILIARY  
HEAT SETUP” OPTION AND  
PRESS SELECT.  
3. HIGHLIGHT “TWO STAGE AUX  
HEAT” AND PRESS SELECT  
R
R
Diagram 6: Single-Stage  
Heat Pump with Single-Stage  
Back Up Heat  
Diagram 7: Single-Stage  
Heat Pump with Two-Stage  
Back Up Heat  
3
. HIGHLIGHT “ONE STAGE AUX  
HEAT” AND PRESS SELECT  
C
C
OUTDOOR UNIT - HEAT PUMP  
OUTDOOR UNIT - HEAT PUMP  
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INDOOR UNIT - AIR HANDLER  
SUPPLIED JUMPER  
APRILAIRE MODEL  
570 THERMOSTAT  
8
2
ND STAGE  
W2  
W1  
EMER. HEAT  
W2  
W1  
RH  
R
THERMOSTAT  
CONFIGURATION  
SWITCH SETTINGS  
(6) OPTIONAL – WIRE THE EVENT TRIGGERED OUTPUT (ETO)  
1
ST STAGE  
AUX. HEAT  
Terminals NO, COM and NC are the  
Normally Open, Common and Normally  
Closed outputs, respectively, of a relay  
that can be used to control auxiliary  
equipment. When the relay is on, a  
circuit is complete between NO and  
COM; when the relay is off a circuit is  
complete between NC and COM. The  
relay is programmed to be on or off,  
with each of the programming events.  
Examples of where this output might  
be used include:  
1
ST STAGE COMP.  
Y1  
Y2  
RC  
G
Y1  
Y2  
B
SINGLE  
HP  
1
2
3
4
MULTI  
HC  
Figure 6  
2
ND STAGE COMP.  
ELECT  
O
GAS  
B
FAN  
RELAY  
G
C
R
MODEL 8570 THERMOSTAT  
(shown with enclosure face removed)  
O
C
SINGLE/MULTI – SET TO  
MULTI FOR TWO STAGE  
HEAT PUMP  
24  
USE ONLY TO  
CONTROL 24-VOLT  
LOADS  
VAC  
I+  
I-  
AHC  
CONNECTION  
ELECT/GAS - SET TO  
ELECT FOR ELECTRIC  
AUXILIARY HEAT, SET TO  
GAS FOR FOSSIL FUEL  
NC  
COM  
NO  
ZA  
C
R
120  
VAC  
RC  
RH  
W1  
ZB  
ZA  
6504  
CONNECTION  
(DUAL FUEL) AUXILIARY  
HEAT  
ZB  
W1  
Y1  
OUTDOOR (ODT)  
&
DEFROST  
I+  
W2  
G
GND  
O/B – SET TO “O” IF HEAT  
PUMP REVERSING VALVE  
MUST BE ENERGIZED  
WHEN COOLING, SET TO  
“B” IF IT IS TO BE  
INDOOR (IDS)  
I-  
1
ST STAGE  
COMP.  
ODT TEMPERATURE  
SENSORS  
EVENT  
IDS  
ODT  
GND  
O/B  
Y1  
Y2  
• Turn on outdoor ventilation for  
programming periods of the day  
when the building is occupied and  
turn it off when unoccupied.  
IDS  
LOAD  
2A MAX OPERATING CURRENT  
2ND STAGE  
COMP.  
COM  
NO  
NC  
Y2  
O
ENERGIZED IN HEATING  
TRIGGERED  
OUTPUT  
(ETO)  
3
A MAX IN-RUSH CURRENT  
REV.  
VALVE  
•
Have an electronic air cleaner turn  
on and off only when the building is  
occupied to reduce maintenance  
time/cost.  
L
SERVICE  
R
C
Diagram 8: Two-Stage Heat Pump  
OUTDOOR UNIT - HEAT PUMP  
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To ENABLE and program the relay:  
To DISABLE the relay:  
(7) OPTIONAL – INSTALL AN APRILAIRE MODEL 8052 OUTDOOR TEMPERATURE SENSOR  
1. Make sure the thermostat is in the OFF mode.  
1. Make sure the thermostat is in the OFF mode.  
2
. Press and hold the and buttons for 3 seconds. The  
display will show the ADV. SETTINGS MENU.  
2. Press and hold the  
display will show the ADV. SETTINGS MENU.  
and  
buttons for 3 seconds. The  
Note: If an ADHC is to be installed, do not wire  
an outdoor temperature sensor– see Step 8.  
The ADHC uses its own outdoor temperature  
sensor, which can be read by the thermostat.  
Figure 7  
3. Scroll down through the menu items and select  
PROGRAMMABLE OUTPUT.  
3. Scroll down through the menu items and select  
PROGRAMMABLE OUTPUT.  
4
. Select ENABLE. The display will then show the program  
event names, and whether the output is to be ON or OFF  
during that event.  
4. Select DISABLE. The display will then return to the ADV.  
SETTINGS MENU.  
1. Mount the outdoor temperature sensor  
NORTH, EAST  
(see Figure 7).  
OR WEST SIDE  
OF BUILDING  
•
Locate on the North side of the building if  
possible. East and West are acceptable  
locations as long as the sensor will not be  
exposed to direct sunlight.  
5
. Use the multi-function buttons labeled and to toggle  
between events and highlight the ON/OFF item to change.  
Use the  
and  
buttons to change the highlighted item  
to ON or OFF.  
•
Mount above anticipated snow line.  
6
. Repeatedly press until DONE is highlighted, where the  
multi-function buttons are labeled CANCEL and SAVE. Press  
SAVE to save the values set, or press CANCEL to return to  
the PROGRAMMABLE OUTPUT menu.  
SENSOR WITH  
BRACKET  
• Mount at least 3 feet away from exhaust  
vents and condensing units.  
• Maximum wire length from sensor to  
thermostat is 300 feet.  
ABOVE SNOW LINE  
•
Under a soffit or under a wall overhang  
are recommended areas for mounting  
the sensor.  
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2. Run a 2-wire cable from the sensor to the thermostat.  
OUTDOOR TEMPERATURE (°F)  
RESISTANCE (kΩ)  
Figure 8  
-
-
-
30  
20  
10  
0
230.6  
163.8  
117.6  
85.4  
62.6  
46.3  
34.6  
26.1  
19.9  
15.3  
11.9  
9.4  
CAUTION  
voltage (120 VAC) or higher lines as this can cause  
erratic readings.  
Do not run the wire along side line  
3
. Take a resistance measurement before connecting to the  
ODT and CIR GND terminals to verify the sensor is  
properly installed. Measure the wires at the thermostat to  
account for wire splices.  
10  
2
3
4
0
0
0
•
Use an ohmmeter to measure the resistance (kΩ) of  
the sensor. The resistance reading will depend on the  
outdoor temperature (see table).  
50  
6
7
8
9
0
0
0
0
4
. Wire the sensor to the thermostat (see Figure 8).  
•
•
Strip 1/4" of insulation from the two sensor wires.  
Connect the sensor wires to the ODT and CIR GND  
terminals of the thermostat. The wiring is not polarity  
sensitive, so either wire can be connected to either  
thermostat terminal.  
7.4  
100  
5.9  
90-1025  
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Figure 9  
(8) OPTIONAL – INSTALL AN AUTOMATIC DIGITAL HUMIDIFIER CONTROL (ADHC)  
Automatic Digital Humidifier Control  
Note: The ADHC uses its own outdoor temperature sensor,  
which is read by the thermostat. If an ADHC is to be installed,  
do not wire an outdoor temperature sensor to the ODT  
terminal of the thermostat.  
2. Run a 2-wire cable from the ADHC to the thermostat.  
3. Wire the ADHC to the thermostat (see Figure 9).  
•
•
Strip 1/4" of insulation from the ends of the wires.  
R
C
A
B
ODT W/G Cf  
H
Connect the A terminal of the ADHC to the ZA terminal  
of the thermostat.  
1. Mount the ADHC and its outdoor temperature sensor.  
•
Follow the directions provided with the ADHC except do  
not mount the ADHC temperature sensor in a fresh air  
intake. The temperature sensor must be mounted  
outside to provide a precise temperature reading.  
•
Connect the B terminal of the ADHC to the ZB terminal  
of the thermostat.  
4
. You will need to power up the thermostat to verify the  
connection. Refer to step 7 of THERMOSTAT START UP  
on page 28.  
Transformer  
To Humidifier  
•
•
Maximum wire length from ADHC to thermostat is 300 feet.  
The ADHC must have constant power. DO NOT power  
the ADHC through furnace accessory terminals.  
DO NOT use a Model 50 Current Sensing Relay.  
Outdoor  
Temperature  
Sensor  
5
. After completing the thermostat installation, you will also  
need to verify proper operation of the ADHC – see ADHC  
installation instructions for details on how this is done.  
•
NOTE: Operating the ADHC in Manual Mode will result in  
the outdoor temperature shown on the thermostat to  
always be 20°F.  
WARNING  
Improper installation may cause serious  
Note: ADHC must be powered by  
a continuous supply - do not wire  
to furnace accessory terminals.  
injury from electrical shock. Do not power up humidifier  
before completing the thermostat installation.  
Model 8570 Thermostat  
CAUTION  
Do not run the wire along side line voltage  
120 VAC) or higher lines as this can cause erratic readings.  
90-1029A  
(
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Figure 10  
(9) OPTIONAL – INSTALL AN APRILAIRE MODEL 8051 FLUSH MOUNT  
OR 8053 SURFACE MOUNT TEMPERATURE SENSOR  
1
. Mount the indoor temperature sensor.  
3. Take a resistance measurement before connecting to  
the IDS and CIR GND terminals to verify the sensor is  
properly installed.  
•
•
Locate the sensor as you would locate a thermostat.  
Maximum wire length from sensor to thermostat is  
•
Use an ohmmeter to measure the resistance (kΩ) of the  
sensor. The resistance reading will depend on the indoor  
temperature (see table from OUTDOOR SENSOR  
installation section on page 20).  
300 feet.  
•
Follow the installation instructions provided with  
the sensor.  
2. Run a 2-wire cable from the sensor to the thermostat.  
4. Wire the sensor to the thermostat (see Figure 10).  
•
•
Strip 1/4" of insulation from the two sensor wires.  
CAUTION  
side line voltage (120 VAC) or higher lines as  
this can cause erratic readings.  
Do not run the wire along  
Connect the sensor wires to the IDS and CIR GND  
terminals of the thermostat. The wiring is not polarity  
sensitive, so either wire can be connected to either  
thermostat terminal.  
90-1026  
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4
. THERMOSTAT SET UP – SET NUMBER OF AUXILIARY  
HEAT STAGES  
NOTE: Refer to the Owner’s Manual for  
thermostat operating instructions.  
(10) THERMOSTAT STARTUP – STAND ALONE APPLICATIONS  
Only for single stage heat pump systems. In the Heat  
mode, control up to three stages of heat.  
1
2
3
. PLACE THE THERMOSTAT ON THE BASE.  
1. Make sure the thermostat is in the OFF mode.  
. TURN ON POWER TO THE HVAC SYSTEM.  
2. Press and hold the and buttons for 3 seconds.  
. THERMOSTAT SET UP – HEAT ONLY OR COOL ONLY  
APPLICATIONS  
MESSAGE  
CENTER  
EQUIPMENT  
STATUS  
The display will show the ADV. SETTINGS MENU.  
3
4
5
. Scroll down through the menu items and select  
AUXILIARY HEAT SETUP.  
Skip this step if the thermostat is to control both  
heating and cooling.  
. Use the  
and  
buttons to highlight either  
OUTDOOR  
TEMPERATURE  
1. Make sure the thermostat is in the OFF mode.  
ONE STAGE AUX HEAT or TWO STAGE AUX HEAT.  
2. Press and hold the and buttons for 3 seconds.  
SETPOINTS  
. Press BACK to return to the ADV. SETTINGS MENU,  
then EXIT to return to the Operating Display.  
The display will show the ADV. SETTINGS MENU.  
3
4
5
. Scroll down through the menu items and select  
CONTROL SET UP.  
ROOM  
TEMPERATURE  
5. VERIFY OUTDOOR TEMPERATURE SENSOR CONNECTION  
if optional outdoor temperature sensor installed).  
(
. Use the  
and  
buttons to highlight either  
•
If an outdoor temperature sensor has been installed and  
is operational, an outdoor temperature will appear on  
main display.  
HEAT ONLY or COOL ONLY.  
. Press BACK to return to the ADV. SETTINGS MENU,  
then EXIT to return to the Operating Display.  
MULTI-FUNCTION  
BUTTONS  
UP/DOWN BUTTONS  
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6
. CHECK FAN OPERATION  
7. VERIFY ADHC CONNECTION (if optional Automatic Digital  
Humidifier Control installed).  
TROUBLESHOOTING – ADHC CONNECTION  
Symptom  
1. Turn on the fan (set to ON).  
Cause  
1
. Ensure that the ADHC has power (the green status light  
on the ADHC should be on) and make sure the ADHC is  
functioning properly – see ADHC installation procedure  
for start up and diagnostics.  
•
The thermostat G terminal will energize and the  
system blower will start. The Fan Status on the display  
will show “FAN ON.”  
Miswiring – Check wire colors to verify A at ADHC is connected to ZA at  
thermostat and B is connected to ZB.  
2
. If an ADHC has been installed, allow the fan to  
operate for no less than 40 seconds. If an ADHC is  
not part of this installation, you can turn the fan off at  
any time. A humidity value can be displayed only after at  
least 40 seconds of blower run-time to ensure the  
humidity reading is representative of the room air.  
No RH display, no outdoor  
temperature display  
ADHC power source – When wired to the Model 8570 thermostat, the ADHC  
must be wired to a continuously ON power source. Use voltmeter to verify  
presence of 24VAC (nominal) at ADHC.  
2. From the Main Screen, press the “INFO” button.  
• The outdoor temperature and relative humidity will be  
displayed for five seconds after which the contact  
screen will be displayed.  
ADHC not operating correctly – check red diagnostic light on ADHC.  
No valid reading available – run fan for at least 40 seconds.  
3. Press the BACK button to return to the Main Screen.  
No RH display, outdoor temperature OK  
RH display, outdoor temperature @ 20°F  
3. Turn the fan off (set to AUTO).  
•
When the humidifier is operating, the message  
HUMIDIFIER ON” appears at the message center,  
ADHC set for manual mode of operation. Wire an outdoor sensor to the  
ADHC or wire an outdoor sensor to the thermostat.  
“
alternating with the time and date and any other  
currently active messages.  
No display, weak text in display,  
or too dark of a display  
Readjust contrast of display to an optimum level. See “Adjust Contrast”  
Section 7.8 in the Owner’s Manual.  
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8
. CHECK HEATING OPERATION  
2. Set the thermostat to the HEAT mode.  
TROUBLESHOOTING – HEATING OPERATION  
Symptom  
Notes:  
• With the O/B configuration setting in the B position (ON), the  
O/B terminal will be on in the Heat mode. In the O position  
Cause  
•
To avoid the minimum on and off times during system  
checkout, always start and end the check out  
procedure in the OFF mode.  
(OFF), the O/B terminal will not be on in the Heat mode.  
Minimum-off times. Change the mode to OFF first, then change the mode to  
HEAT and make a call for heat.  
Thermostat does not call for heat  
Heating does not come on at all  
3. Raise the temperature setting above the room temperature to  
activate the desired stages of heating. The mode display will  
change from “HEAT MODE” to “HEATING”, which will flash,  
when the thermostat is calling for heat. Fifteen (15) seconds  
must elapse between each stage. Verify the correct outputs  
are on according to the configuration settings shown below:  
RH terminal not connected – see wiring diagrams.  
Heating equipment power not on.  
•
Do not operate heat pumps in the heating mode at high  
outdoor temperatures for extended periods of time.  
High Balance point limit – set balance point to OFF during system checkout.  
1. Set the thermostat to the OFF mode.  
Auxiliary Heat does not come on  
Fan stays on after heat call  
Number of Auxiliary Heat stages not set correctly. See Step 4 of Thermostat  
Start Up (page 27).  
Single/Multi  
HP/HC  
Elect/Gas  
Multi Multi Single Single Multi Multi  
Single  
HP  
Single  
HP  
Gas  
Furnace plenum sensor keeps fan on – normal.  
Configuration  
Settings  
HC  
Elect  
HC  
Gas  
HC  
Elect  
HC  
HP  
HP  
Blower Extension for humidifier operation. Verify that the message  
Gas  
Elect  
Gas  
Elect  
"
HUMIDIFYING" appears at the message center, alternating with the time  
Aux. Ht. Stages  
1
2
1
2
and date and any other currently active messages.  
W1  
G
W1  
W2  
G
W1  
W1  
G
W1  
W2  
G
W1  
Y1  
G
Y1  
Y2  
G
Y1  
Y2  
W1  
G
Y1  
G
Y1  
Y2  
G
Y1  
G
Y1  
W1  
G
Y1  
G
Y1  
W1  
G
Y1  
W1  
W2  
G
Y1  
G
W1  
Y1  
G
W1  
1
st Stage Heat  
Change position of ELECT/GAS dip switch – ELECT for electric heat systems  
Fan comes on before heat starts, or  
Fan does not come on with heat  
(fan on with heat call) or to GAS for fossil fuel systems where the fan is  
W1  
W2  
W1  
W2  
controlled internally by the heating equipment.  
2nd Stage Heat  
Outputs  
Energized  
O/B dip switch not set properly. See Step 2, page 30.  
Miswiring – check wire colors at thermostat and HVAC equipment.  
Cooling comes on instead of heat  
W1  
W2  
3rd Stage Heat  
Takes longer than 15 seconds for auxiliary  
heat to come on after compressor heat.  
SINGLE/MULTI dip switch set incorrectly – set to SINGLE for single-stage  
compressor systems.  
W1  
G
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9
. CHECK COOLING OPERATION  
2. Set the thermostat to the COOL mode.  
TROUBLESHOOTING – COOLING OPERATION  
Symptom  
Notes:  
• With the O/B configuration setting in the O position (OFF),  
the O/B terminal will be on in the Cool mode. In the  
B position (ON), the O/B terminal will not be on in the  
Cool mode.  
Cause  
•
•
1
To avoid the minimum on and off times during system  
checkout, always start and end the check out  
procedure in the OFF mode.  
Minimum-off times. Change the mode to OFF first, then change the mode  
to COOL and make a call for cooling.  
Thermostat does not call for cooling  
Cooling does not come on at all  
3
. Lower the temperature setting below the room temperature to  
activate the desired stages of cooling. The mode display will  
change from “COOL MODE” to “COOLING”, which will flash,  
when the thermostat is calling for cooling. Fifteen (15) seconds  
must elapse between each stage. Verify the correct outputs  
are on according to the configuration settings shown below:  
RC terminal not connected – see wiring diagrams.  
Cooling equipment power not on.  
Do not operate air conditioning at low outdoor  
temperatures. Refer to equipment manufacturer  
recommendations for safe operating temperatures.  
O/B dip switch not set properly. See Step 2, page 32.  
Miswiring – check wire colors at thermostat and HVAC equipment.  
. Set the thermostat to the OFF mode.  
Heat comes on instead of cooling  
Single/Multi  
Single  
Multi  
HP/HC  
Configuration Settings  
The same outputs come on  
regardless of how these are set.  
Elect/Gas  
Aux. Ht. Stages  
1
st Stage Cool  
Y1, G  
Y1, G  
Y1, Y2, G  
Outputs Energized  
2nd Stage Cool  
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10. CHECK EMERGENCY HEAT OPERATION (Heat Pumps Only)  
2. Set the thermostat to the EMERGENCY HEAT mode.  
TROUBLESHOOTING – EMERGENCY HEAT OPERATION  
Notes:  
• With the O/B configuration setting in the B position (ON),  
the O/B terminal will be on in the Emergency Heat mode. In  
the O position (OFF), the O/B terminal will not be on in the  
Emergency Heat mode.  
Symptom  
Cause  
•
To avoid the minimum on and off times during system  
checkout, always start and end the check out  
procedure in the OFF mode.  
Minimum-off times. Change the mode to OFF first, then change the mode  
to EMERGENCY HEAT and make a call for heat.  
Thermostat does not call for heat  
3
. Raise the temperature setting above the room temperature to  
activate Emergency Heat. The mode display will change from  
RH terminal not connected – see wiring diagrams.  
Heating equipment power not on.  
1. Set the thermostat to the OFF mode.  
Emergency Heat does not come on at all  
“EHEAT MODE” to “HEATING”, which will flash, when the  
thermostat is calling for heat. Fifteen (15) seconds must  
elapse between each stage. Verify the correct outputs are on  
according to the configuration settings shown below:  
Change position of ELECT/GAS dip switch – ELECT for electric heat systems  
(fan on with heat call) or to GAS for fossil fuel systems where the fan is  
controlled internally by the heating equipment.  
Fan comes on before heat starts, or  
Fan does not come on with heat  
Single/Multi  
The same outputs come on  
regardless of how these are set.  
HP/HC  
Configuration Settings  
Elect/Gas  
Elect  
Gas  
Aux. Ht. Stages  
The same outputs come on regardless of how these are set.  
1
st Stage Emer. Heat  
W1, G  
W1  
Outputs Energized  
2nd Stage Emer. Heat  
W1, W2, G  
W1, W2  
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2. DIFFERENTIALS  
3. Use the ▲ or ▼ button to highlight “SET DIFFERENTIAL”  
(
11) CUSTOMIZE THE APPLICATION SETTINGS  
and press the SELECT button.  
Determines the temperature above/below the temperature  
setting at which the heating or cooling equipment will turn  
on. For example, a heat temperature setting of 70°F with a  
differential of 2° will result in the equipment turning on and  
off to maintain the temperature between 68°F and 70°F. If the  
second stage differential is also 2°, the second stage would  
be used to ensure the temperature did not drop below 66°.  
The default setting for the first stage and second stage  
differential is 1°.  
– If the thermostat SINGLE/MULTI dip switch is set for  
MULTI, two differentials will appear, if set for SINGLE,  
only one will appear.  
1
. PROGRAMMABLE OR NON-PROGRAMMABLE  
0-Non Programmable This setting is best when having the  
temperature setting change with the  
time of day is not desired. The Program  
option in the menu is not available when  
this setting is selected. To change the  
temperature, simply use the Up and  
Down arrow buttons.  
This thermostat can be configured as a programmable or  
non-programmable thermostat. Four choices are available:  
4. To cancel, press the BACK button. This will return you  
to the ADV. SETTINGS MENU.  
4
-Residential This setting is best for homeowners where there  
are regularly scheduled, long periods of time  
during any day where the house is not occupied,  
such as when everyone is at school or work. In  
the program, there will be four scheduled  
5. To change the first stage differential, press the ▲ and ▼  
button to raise or lower the setting. To change the second  
stage differential, press the SELECT button.  
1. Make sure the thermostat is in the OFF mode.  
To change the differential settings:  
6. To finish and return to the ADV. SETTINGS MENU, press  
the SELECT button after the value(s) have been set.  
temperature changes per day (events) labeled  
Wake, Leave, Return and Sleep.  
2. Press MENU button to show the MAIN MENU.  
1. Make sure the thermostat is in the OFF mode.  
2. Press and hold both the ▲ and ▼ buttons for 3 seconds.  
– The display will show the ADV. SETTINGS MENU.  
3. Scroll down through the menu items and select SETTINGS.  
– For heat pumps – the auxiliary heat differential(s) are  
set separately after the number of auxiliary heat stages is  
selected. See Diagrams 6-8 on pages 14-16 for auxiliary  
heat set up instructions.  
2
-Residential This setting is best for homeowners who have  
no long periods of time during the day when the  
home is unoccupied. In the program, there will  
be only two scheduled temperature changes per  
day (events) labeled Day and Night.  
4. In the SETTINGS MENU, scroll down through the menu items  
and select EVENTS PER DAY.  
5
6
7
. To cancel, press the BACK button. This will return you to the  
SETTINGS MENU.  
. To change, use the ▲ or ▼ button to scroll to the  
desired setting.  
2
-Business  
This setting is best for businesses that are  
occupied during business hours and not occupied  
during non-business hours. In the program, there  
will be only two scheduled temperature changes  
per day (events) labeled Occupied and Unoccupied.  
. To finish and return to the SETTINGS MENU, press the  
SELECT button.  
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3
. OFFSET  
All thermostats are factory calibrated to be accurate to within  
1° of true temperature. An offset is available to allow for  
4. DEADBAND  
5. PROGRESSIVE RECOVERY  
To turn Progressive Recovery on or off:  
This is the number of degrees (in either °F or °C) that the heat  
setting must be lower than the cool setting. The thermostat will  
automatically adjust the temperature setting not being changed  
to maintain this difference.  
Progressive Recovery causes the thermostat to bring on the  
heating/cooling equipment before the programmed event start  
time, in order for the temperature to be at the programmed  
value by the programmed time. The feature can be turned on  
or off. When turned off, the heating/cooling equipment will  
not begin bringing the space temperature to the programmed  
value until the start of the event.  
1. Make sure the thermostat is in the OFF mode.  
±
2
. Press and hold both the ▲ and ▼ buttons for 3 seconds.  
The display will show the ADV. SETTINGS MENU.  
agreement with field temperature measuring instruments. The  
value set will be added to the temperature sensed by the  
thermostat. The result will be displayed on the thermostat and  
will be used as the control value.  
–
3. Use the ▲ or ▼ button to highlight “PROGRESSIVE  
1. Make sure the thermostat is in the OFF mode.  
RECOVERY” and press the SELECT button.  
2. Press and hold both the ▲ and ▼ button for 3 seconds.  
4. To cancel, press the BACK button  
To change the offset:  
–
The display will show the ADV. SETTINGS MENU.  
5. To change whether Progressive Recovery is on or off,  
press the ▲ or ▼ button to highlight either ON or OFF.  
1. Make sure the thermostat is in the OFF mode.  
3. Scroll down through the menu items and select SETTINGS.  
2. Press and hold both the ▲ and ▼ buttons for 3 seconds.  
4. Use the ▲ or ▼ button to highlight “DEADBAND” and press  
6. To finish and return to the ADV. SETTINGS MENU, press  
–
The display will show the ADV. SETTINGS MENU.  
the SELECT button.  
the SELECT button.  
3. Use the ▲ or ▼ button to highlight “SET OFFSET” and  
5
6
7
. To cancel, press the BACK button. This will return you to the  
SETTINGS MENU.  
press the SELECT button.  
4. To cancel, press the BACK button.  
. To change, use the ▲ or ▼ button to scroll to either 2°  
or 5°.  
5. To change the offset value, press the ▲ or ▼ button to  
raise or lower the setting between –4° and +4° (°F or °C).  
. To finish and return to the ADV. SETTINGS MENU, press the  
6. To finish and return to the ADV. SETTINGS MENU, press  
SELECT button.  
the SELECT button.  
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6. BALANCE POINTS (HEAT PUMPS ONLY)  
3. Use the ▲ or ▼ button to highlight “SET BALANCE  
7. INPUT DEALER CONTACT INFORMATION  
3. Use the ▲ or ▼ button to highlight “INPUT DEALER INFO”  
POINTS” and press the SELECT button.  
and press the SELECT button. This enters Line 1.  
This feature is only available when the thermostat has been  
configured to operate heat pumps (see SET THE  
CONFIGURATION DIP SWITCHES on page 6) and only when an  
outdoor temperature is available to the thermostat. Outdoor  
temperature can come from an ADHC or from an outdoor  
temperature sensor.  
During thermostat operation, the two multi-function buttons  
are labeled INFO and MENU. When the INFO button is  
pressed, the thermostat will display the humidity and  
temperature sensed by the ADHC (if an ADHC has been  
installed), then the thermostat will display any monitor  
messages and dealer contact information. At installation,  
the contact information is blank and only the thermostat  
model number appears. You have the option of inputting this  
contact information with the name and number of your  
company. Three twenty (20) character lines are available for  
your company name and contact info.  
4. To cancel, press the BACK button. This will return you to  
the ADV. SETTINGS MENU.  
4. To cancel, press the BACK button. This returns to the  
ADV. SETTINGS MENU. You must be at the first position  
when pressing the BACK button to return to the  
ADV. SETTINGS MENU.  
5
. To change the low balance point, press the ▲ or ▼  
button to raise or lower the temperature value  
(range is -10°F to 35°F and OFF).  
5. To go back a character, press the BACK button.  
The low balance point is the outdoor temperature at or below  
which the thermostat will lockout the compressor(s) – only  
auxiliary heat will be used to satisfy heating demands. The high  
balance point is the outdoor temperature at or above which the  
thermostat will lockout the auxiliary heat – only compressor  
heat will be used to satisfy heating demands. Emergency heat  
operation is unaffected by the high balance point.  
6. To change the high balance point, press the SELECT  
button, then press the ▲ or ▼ button to raise or lower the  
temperature value (range is 40°F to 80°F and OFF).  
6. To enter a character, use the ▲ or ▼ buttons to scroll  
through the available characters. Press the SELECT button  
to enter the character.  
7
. To finish and return to the ADV. SETTINGS MENU, press  
the SELECT button after the value(s) have been set.  
7. To finish Line 1 and go to Line 2, repeatedly press  
SELECT, filling all remaining characters with spaces,  
then press SELECT again.  
To change the contact information:  
Important time saver: If the thermostat is installed as part  
of a Model 6504 Intelligent Zoned Comfort System, the  
balance points only need to be changed at one thermostat.  
The Model 6504 will share the new settings with all  
connected thermostats.  
1. Make sure the thermostat is in the OFF mode.  
2. Press and hold both the ▲ and ▼ buttons for 3 seconds.  
– The display will show the ADV. SETTINGS MENU.  
8. Repeat to fill Line 2 and Line 3.  
To change the balance points:  
9
. To finish, press the SELECT button after entering the  
1. Make sure the thermostat is in the OFF mode.  
20th character of the third line.  
2. Press and hold both the ▲ and ▼ buttons for 3 seconds.  
–
The display will show the ADV. SETTINGS MENU.  
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8
. BLOWER EXTENSION FOR HUMIDITY CONTROL  
To enable blower extension:  
9. MONITORS – AIR FILTER, SERVICE HUMIDIFIER,  
UV LAMP, SERVICE HVAC  
4. Use ▲ or ▼ button to highlight the monitor you wish to  
set (AIR FILTER, SERVICE HUMIDIFIER, UV LAMP or  
SERVICE HVAC) then press the SELECT button. Press the  
BACK button to cancel.  
If the heating equipment has not run long enough to allow the  
humidifier to meet the humidity demand, the thermostat will  
continue the blower after a heat call. One second before the  
thermostat turns off the heating terminal(s), the fan terminal  
will be energized thus extending blower operation. If the fan  
terminal was on as part of the heat call it will remain on, if it  
was not on it will be turned on. The thermostat will operate  
the blower for no less than 5 minutes after the heat call and  
not more than 15 minutes. This will allow the humidifier to  
continue to put moisture in the air to satisfy the humidity  
demand. This feature can be enabled or disabled and can only  
be used when an ADHC is part of the installation.  
1. Make sure the thermostat is in the OFF mode.  
The thermostat monitors time and can display scheduled  
reminders for the user to service their humidifier, change their  
filter and UV lamps, and to remind the user to schedule an  
HVAC system maintenance check. All monitors are strictly time  
based, so setting a filter monitor to three months will result in  
the change reminder being displayed in three months,  
regardless of how much the HVAC system has run in that  
period. All monitors can also be turned off for installations  
where one or more of the components may not be installed.  
When the thermostat has verified that a monitor setting has  
been reached, a message is displayed on the thermostat  
2. Press and hold both the ▲ and ▼ buttons for 3 seconds.  
–
The display will show the ADV. SETTINGS MENU.  
5. Use ▲ or ▼ button to highlight the amount of time you  
wish to set then press the SELECT button. Press the BACK  
button to cancel.  
3. Use the ▲ or ▼ button to highlight “BLOWER EXTENSION”  
and press the SELECT button.  
4. To cancel, press the BACK button  
6. Pressing the SELECT button, after setting the schedule,  
5. To change whether Blower Extension is enabled (on) or  
disabled (off), press the ▲ or ▼ button to highlight either  
ON or OFF.  
takes you back to the MONITORS screen.  
•
•
To set additional reminder schedules return to step 3.  
To finish, press the BACK button three times to return to  
normal operation.  
6. To finish and return to the ADV. SETTINGS MENU, press  
the SELECT button.  
To reset an active monitor:  
(at the message center location where date and time are  
Note: To take full advantage of this feature, the humidifier  
must be plumbed to hot water.  
normally displayed) and the label for the multi-function button  
normally labeled INFO changes to CALL DEALER.  
1. Press the CALL DEALER button.  
2. Press the RESET button.  
To set humidifier, filter, UV and HVAC service  
reminder schedules:  
3. This will reset the monitor and return you to the Main Screen.  
Important: When an ADHC is installed with the thermostat,  
either directly or as part of a Model 6504 Intelligent Zoned  
Comfort System, the service humidifier monitor will  
1. Press the MENU button.  
2. Use ▲ or ▼ button to highlight SETTINGS, then press the  
automatically be set to AUTO. AUTO is not a choice unless an  
ADHC is present. Set to AUTO, the ADHC will initiate “service  
humidifier” based on humidifier type and run time.  
SELECT button. Press the BACK button to cancel.  
3
. Use ▲ or ▼ button to highlight MONITORS, then press  
SELECT. Press BACK to cancel.  
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RESEARCH PRODUCTS CORPORATION  
1
0006198 11.07  
997-040090-3  
Printed in U.S.A.  
B2203358D  
P.O. BOX 1467 • MADISON,WI 53701-1467  

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