Premium Programmable Thermostat Safety & Installation Instructions Model 8570 READ AND SAVE THESE INSTRUCTIONS DP #10006198 B2203358C P.O. BOX 1467 • MADISON, WI 53701-1467 997-040090-3 Printed in U.S.A.
TABLE OF CONTENTS PAGE PAGE PAGE PAGE SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Diagram 4 – Boiler with AC . . . . . . . . . . . . . . . . . 12 WIRE REQUIREMENTS. . . . . . . . . . . . . . . . . . . . . . . . . 2 Diagram 5 – Radiant Floor 1st Stage Heat with Furnace 2nd Stage Heat and AC . . . . . . . . . 13 9. OPTIONAL – INSTALL AN INDOOR TEMPERATURE SENSOR . . . . . . . . . . . . . . . . . . 24 11. CUSTOMIZE THE APPLICATION SETTINGS . . . . . . . . . . . . . . . .
SAFETY INSTRUCTIONS Read this Installation Manual before beginning installation of the Aprilaire® 8570 Thermostat. For questions call Research Products Corporation at (800) 334-6011. MODEL 8570 SPECIFICATIONS Electrical Thermostat Voltage: WARNING 1. 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. 2.
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 (i.e. not as part of an Aprilaire® Model 6504 Intelligent Zoned Comfort System). Figure 1 shows optional connections to both an outdoor temperature sensor and an Aprilaire® Automatic Humidifier Control (AHC), but only one or the other can be used. All wire is standard 18-24 gauge thermostat cable.
(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. If needed, the thermostat can be pried from the base by inserting a flat-head screwdriver (see Figure 3). CAUTION 1. Place the wire opening in the base over the wire entry hole in the wall. Level the base (for appearance only) and mark the screw locations. See Figure 4. Figure 4 2.
(4) SET THE CONFIGURATION DIP SWITCHES ON THE THERMOSTAT CIRCUIT BOARD There are four dip switches located on the back of the thermostat (on the circuit board) that must be set to properly configure the thermostat for operation with the equipment it is to control. Figure 5 shows the default position for the four switches. Figure 5 ON SINGLE HP ELECT O MULTI HC GAS B MULTI or SINGLE – When set to single, the second stage outputs (Y2 and W2) do not energize.
Single-Stage Furnace/AC # Wires Diagram (Page) 5 1 (9) Two-Stage Furnace/AC 7 2 (10) Two-Stage Roof Top Unit 7 3 (11) Boiler w/AC (2-transformer) 6 4 (12) Radiant 1st Stage Heat, Furnace 2nd Stage and AC 6 5 (13) Single-Stage Heat Pump 6 6 (14) Single-Stage Heat Pump w/Two Stages Aux. Heat 7 7 (15) Two-Stage Heat Pump 8 W1 1ST STAGE COOL FAN RELAY Y1 G C 24 VAC 120 VAC R I+ I- L1 Application 1ST STAGE HEAT L2 120 volts may cause serious injury from electrical shock.
W1 1ST STAGE COOL 2ND STAGE COOL FAN RELAY Y1 Y2 G C 2ND STG COOL 120 VAC R I+ I- L1 L2 24 VAC 1ST STG COOL COM NO NC C ELECT O 3 2 4 MULTI HC GAS B 1ST STAGE HEAT 2ND STAGE COOL 6504 CONNECTION OUTDOOR (ODT) & INDOOR (IDS) TEMPERATURE SENSORS 2ND STAGE HEAT APRILAIRE MODEL 8570 THERMOSTAT SUPPLIED JUMPER W2 W1 RH R RC G Y1 Y2 B O C W2 W1 1ST STAGE COOL Y1 Y2 FAN RELAY AHC CONNECTION GND ODT IDS Y2 1 ELECT/GAS - SET TO ELECT FOR ELECTRIC HEAT, SET TO GAS FOR FOSSIL FUEL HEAT
HEAT RELAY REMOVE RH PRONG FROM SUPPLIED JUMPER W 1ST STAGE COOL Y1 C 24 VAC INDOOR AIR HANDLER 1ST STG COOL AHC CONNECTION GND ODT IDS Y1 COM NO NC C 4 GAS B 6504 CONNECTION OUTDOOR (ODT) & INDOOR (IDS) TEMPERATURE SENSORS EVENT TRIGGERED OUTPUT (ETO) 120 VAC 1ST STAGE HEAT W1 1ST STAGE COOL FAN RELAY Y1 G C 24 VAC 120 VAC W2 W1 RH R RC G Y1 Y2 B O C I+ I- R Y1 C 7 Y 8 O 9 MODEL 8024 24-VOLT RELAY PACK (not supplied) THERMOSTAT CONFIGURATION SWITCH SETTINGS AHC CONNECTION ZB ZA
FAN RELAY Y1 G C 120 VAC R I+ I- L1 L2 24 VAC 1ST STAGE COMP. REV. VALVE W1 AHC CONNECTION Y1 GND ODT IDS O COM NO NC 6504 CONNECTION OUTDOOR (ODT) & INDOOR (IDS) TEMPERATURE SENSORS EVENT TRIGGERED OUTPUT (ETO) L SERVICE R C OUTDOOR UNIT - HEAT PUMP Diagram 6: Single-Stage Heat Pump with Single-Stage Back Up Heat - 14 - 1 ELECT O 3 2 4 MULTI HC GAS B 1ST STAGE AUX.
INDOOR UNIT - AIR HANDLER SUPPLIED JUMPER APRILAIRE MODEL 8570 THERMOSTAT W2 1ST STAGE AUX. HEAT W1 1ST STAGE COMP. Y1 2ND STAGE COMP. Y2 FAN RELAY G W2 W1 RH R RC G Y1 Y2 B O C C 120 VAC R I+ I- L1 L2 24 VAC THERMOSTAT CONFIGURATION SWITCH SETTINGS AHC CONNECTION W1 GND ODT IDS Y1 1ST STAGE COMP. 2ND STAGE COMP. REV.
To ENABLE and program the relay: To DISABLE the relay: 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 and buttons for 3 seconds. The display will show the ADV. SETTINGS MENU. 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.
2. Run a 2-wire cable from the sensor to the thermostat. CAUTION Do not run the wire along side line voltage (120 VAC) or higher lines as this can cause erratic readings. 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. • Use an ohmmeter to measure the resistance (kΩ) of the sensor. The resistance reading will depend on the outdoor temperature (see table). 4.
2. Run a 2-wire cable from the AHC to the thermostat. Automatic Humidistat Control 3. Wire the AHC to the thermostat (see Figure 9). • Strip 1/4" of insulation from the ends of the wires. • Connect the I- terminal of the AHC to the I- terminal of the thermostat. 1. Mount the AHC and its outdoor temperature sensor. • Maximum wire length from AHC to thermostat is 300 feet. 4. You will need to power up the thermostat to verify the connection. Refer to step 7 of THERMOSTAT START UP on page 28.
(9) OPTIONAL – INSTALL AN APRILAIRE MODEL 8051 FLUSH MOUNT OR 8053 SURFACE MOUNT TEMPERATURE SENSOR 1. Mount the indoor temperature sensor. • Locate the sensor as you would locate a thermostat. • Maximum wire length from sensor to thermostat is 300 feet. • Follow the installation instructions provided with the sensor. 2. Run a 2-wire cable from the sensor to the thermostat. Figure 10 3.
NOTE: Refer to the Owner’s Manual for thermostat operating instructions. (10) THERMOSTAT STARTUP – STAND ALONE APPLICATIONS 4. THERMOSTAT SET UP – SET NUMBER OF AUXILIARY HEAT STAGES Only for single stage heat pump systems. In the Heat mode, control up to three stages of heat. 1. PLACE THE THERMOSTAT ON THE BASE. 1. Make sure the thermostat is in the OFF mode. 2. TURN ON POWER TO THE HVAC SYSTEM. EQUIPMENT STATUS MESSAGE CENTER 2. Press and hold the and buttons for 3 seconds.
6. CHECK FAN OPERATION 7. VERIFY AHC CONNECTION (if optional Automatic Humidifier Control installed). 1. Turn on the fan (set to ON). • The thermostat G terminal will energize and the system blower will start. The Fan Status on the display will show “FAN ON.” 2. If an AHC has been installed, allow the fan to operate for no less than 40 seconds. If an AHC is not part of this installation, you can turn the fan off at any time.
8. CHECK HEATING OPERATION 2. Set the thermostat to the HEAT mode. Notes: • To avoid the minimum on and off times during system checkout, always start and end the check out procedure in the OFF mode. 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.
9. CHECK COOLING OPERATION 2. Set the thermostat to the COOL mode. Notes: • To avoid the minimum on and off times during system checkout, always start and end the check out procedure in the OFF mode. • Do not operate air conditioning at low outdoor temperatures. Refer to equipment manufacturer recommendations for safe operating temperatures. 1. Set the thermostat to the OFF mode.
10. CHECK EMERGENCY HEAT OPERATION (Heat Pumps Only) 2. Set the thermostat to the EMERGENCY HEAT mode. 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. • To avoid the minimum on and off times during system checkout, always start and end the check out procedure in the OFF mode. 3.
(11) CUSTOMIZE THE APPLICATION SETTINGS 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.
3. OFFSET All thermostats are factory calibrated to be accurate to within ±1° of true temperature. An offset is available to allow for 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. To change the offset: 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.
6. BALANCE POINTS (HEAT PUMPS ONLY) 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 AHC or from an outdoor temperature sensor. 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.
8. BLOWER EXTENSION FOR HUMIDITY CONTROL 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.
