Aprilaire 8570 Safety And Installation Instructions Manual Download Page 29 | Manualshive

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Symptom

Cause

Miswiring – Check wire colors to verify I- at AHC is connected to I- at
thermostat and I+ is connected to I+.

No RH display, no outdoor

AHC power source – When wired to the Model 8570 thermostat, the AHC

temperature display

must be wired to a continuously ON power source. Use voltmeter to verify
presence of 24VAC (nominal) at AHC.

AHC not operating correctly – check red diagnostic light on AHC.

No RH display, outdoor temperature OK

No valid reading available – run fan for at least 40 seconds.

RH display, outdoor temperature @ 20°F

AHC set for manual mode of operation. Wire an outdoor sensor to the AHC
or wire an outdoor sensor to the thermostat.

- 25 -

TROUBLESHOOTING – AHC CONNECTION

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Summary of Contents for 8570

Page 1: ...Premium Programmable Thermostat Safety Installation Instructions Model 8570 READ AND SAVE THESE INSTRUCTIONS ...

Page 2: ...AT CIRCUIT BOARD 6 PAGE 5 WIRE THE THERMOSTAT TO THE HVAC EQUIPMENT 8 Diagram 1 Single Stage Furnace and AC 9 Diagram 2 Two Stage Furnace and AC 10 Diagram 3 Two Stage Roof Top Unit 11 Diagram 4 Boiler with AC 12 Diagram 5 Radiant Floor 1st Stage Heat with Furnace 2nd Stage Heat and AC 13 Diagram 6 Single Stage Heat Pump 14 Diagram 7 Two Stage Heat Pump 15 6 OPTIONAL INSTALL AN OUTDOOR TEMPERATURE...

Page 3: ... Verify AHC Connection 24 Check Heating Operation 26 Check Cooling Operation 28 Check Emergency Heat Operation Heat Pumps Only 29 PAGE 10 CUSTOMIZE THE APPLICATION SETTINGS 30 Differential 30 Offset 31 Progressive Recovery 31 Balance Points Heat Pumps Only 32 Input Dealer Contact Information 33 Blower Extension for Humidity Control 34 Monitors Air Filter Service Humidifier UV Lamp Service HVAC 35 ...

Page 4: ... be installed by a qualified heating and air conditioning contractor in accordance with NEC Standards and applicable local and state codes 3 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 Read this Installation Manual before beginning installation of the Aprilaire 8570 Therm...

Page 5: ...ate Outputs Less than 1 volt Thermal Operating Range 32 F 99 F 0 C 37 C Display Accuracy 1 F between 60 F and 80 F 2 F outside this range Control Accuracy 1 F Control Range Heat 40 F 88 F 4 C 30 C Control Range Cool 42 F 90 F 6 C 32 C Heat Cool Deadband 2 F or C 1st Stage Differential Adjustable 1 F 3 F 1 F default 2nd Stage Differential Adjustable 1 F 3 F 1 F default Temperature Offset Adjustable...

Page 6: ...2 only one four wire cable need be run from the thermostat to the Model 6504 Use standard 18 24 gauge thermostat cable OPTIONAL AUTOMATIC HUMIDIFIER CONTROL AHC HVAC EQUIPMENT MODEL 8570 THERMOSTAT SEE TABLE 2 WIRES 2 WIRES 2 WIRES OPTIONAL OUTDOOR TEMPERATURE SENSOR OPTIONAL INDOOR TEMPERATURE SENSOR MODEL 8570 THERMOSTAT MODEL 6504 4 WIRES Application Wires Diagram Page Single Stage Furnace AC 5...

Page 7: ...ar lamps appliances or other sources of heat 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 near sources of electrical interference such as arcing switch contacts If installing an indoor temperature sensor Mount the thermostat wher...

Page 8: ...UTION Loss of internal programs may result from static discharge to thermostat circuit board Avoid touching the circuit board and touch a grounded metal object before handling the thermostat INSERT SCREWDRIVER INTO 1 OF 4 SLOTS 2 ARE ON THE TOPSIDE 2 ARE ON THE BOTTOM SIDE USE THE SCREWDRIVER TO SEPARATE THE HOUSINGS REPEAT ON THE REMAINING 3 SLOTS NOTE THE HOUSINGS WILL NOT COMPLETELY SEPARATE PU...

Page 9: ...o drywall sheet rock 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 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 CIR GND IDS ODT ZA ZB C W2 W1 RH R RC G Y1 Y...

Page 10: ...ULTI 6504 HP ELEC AHC SINGLE Figure 5 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 ...

Page 11: ...nergized on a call for heat Set to ELEC when the heat source is electric such as strip heat Set to GAS when the heat source is fossil fuel oil propane natural gas For heat pumps when set to FOSSIL the compressor terminal s will de energize before the auxiliary heat terminal W1 is energized thus acting as a fossil fuel kit MULTI or SINGLE When set to single the second stage outputs Y2 and W2 do not...

Page 12: ...hematic appropriate for your HVAC equipment 5 WIRE THE THERMOSTAT TO THE HVAC EQUIPMENT 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 Application Wires Diagram Page Single Stage Furnace AC 5 1 9 Two Stage Furnace AC 7 2 10 Two Stage Ro...

Page 13: ... 9 Diagram 1 Single Stage Furnace and AC ...

Page 14: ... 10 Diagram 2 Two Stage Furnace and AC ...

Page 15: ... 11 Diagram 3 Two Stage Roof Top Unit ...

Page 16: ... 12 Diagram 4 Boiler with AC ...

Page 17: ... 13 Diagram 5 Radiant Floor 1st Stage Heat with Furnace 2nd Stage Heat and AC ...

Page 18: ... 14 Diagram 6 Single Stage Heat Pump ...

Page 19: ... 15 Diagram 7 Two Stage Heat Pump ...

Page 20: ...uilding if possible East and West are acceptable locations as long as the sensor will not be exposed to direct sunlight Mount above anticipated snow line Mount at least 3 feet away from exhaust vents and condensing units Maximum wire length from sensor to thermostat is 300 feet Under a soffit or under a wall overhang are recommended areas for mounting the sensor Follow any additional location requ...

Page 21: ...or temperature see table 4 Wire the sensor to the thermostat see Figure 7 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 CAUTION Do not run the wire along side line voltage 120 VAC or higher lines as this can cause erratic...

Page 22: ...CIR GND IDS ODT ZA ZB C Figure 7 18 ...

Page 23: ...wire cable from the AHC to the thermostat 3 Wire the AHC to the thermostat see Figure 8 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 Connect the I terminal of the AHC to the I terminal of the thermostat 4 You will need to power up the thermostat to verify the connection Refer to step 5 of THERMOSTAT START UP on page 24 5 A...

Page 24: ...01 Rev B 24V BYPASS I R I POWER H C ODT TES T RES E T 2 3 5 4 6 1 7 AUTOMATIC MODE O F F N O R M A L OFF C A B Figure 8 AHC must be powered by a continuous supply do not wire to furnace accessory terminals 20 ...

Page 25: ...e resistance kΩ of the sensor The resistance reading will depend on the indoor temperature see table from OUTDOOR SENSOR installation section on page 17 4 Wire the sensor to the thermostat see Figure 9 Strip 1 4 of insulation from the two sensor wires 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 ...

Page 26: ... 22 CIR GND IDS ODT ZA ZB C Figure 9 ...

Page 27: ... 23 9 THERMOSTAT STARTUP STAND ALONE APPLICATIONS EQUIPMENT STATUS OUTDOOR TEMPERATURE ROOM TEMPERATURE MESSAGE CENTER SETPOINTS UP DOWN BUTTONS MULTI FUNCTION BUTTONS ...

Page 28: ...ed 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 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 Turn the fan off set to AUTO 5 VERIFY AHC CONNECTION if optional Automatic Humidifier Control installed Ensure that...

Page 29: ...ired to a continuously ON power source Use voltmeter to verify presence of 24VAC nominal at AHC AHC not operating correctly check red diagnostic light on AHC No RH display outdoor temperature OK No valid reading available run fan for at least 40 seconds RH display outdoor temperature 20 F AHC set for manual mode of operation Wire an outdoor sensor to the AHC or wire an outdoor sensor to the thermo...

Page 30: ...h is set in the ELEC position terminals will energize Heat pumps Y1 and G terminals will energize Wait for 2nd Stage Furnace Boiler Minimum on time for 1st stage is 2 minutes W1 W2 and G if GAS ELEC dip switch set to the ELEC position will energize Heat pumps Minimum on time for 1st stage is 4 minutes Y1 W1 and G terminals will energize if SINGLE MULTI dip switch set to SINGLE and ELEC GAS dip swi...

Page 31: ...r operation Verify that the message HUMIDIFYING appears at the message center alternating with the time and date and any other currently active messages Fan comes on before heat starts or Change position of ELEC GAS dip switch ELEC for electric heat systems Fan does not come on with heat fan on with heat call or to GAS for fossil fuel systems where the fan is controlled internally by the heating e...

Page 32: ...1st stage cool call The mode display will change from COOL MODE to COOLING which will flash when the thermostat is calling for cooling Y1 and G terminals will energize Wait 4 minutes for 2nd Stage Y1 Y2 and G terminals will energize Set the thermostat to the OFF mode Symptom Cause Thermostat does not call for cooling Minimum off times Change the mode to OFF first then change the mode to COOL and m...

Page 33: ... for heat W1 and W2 and G if GAS ELEC dip switch is set in the ELEC position terminals will energize Set the thermostat to the OFF mode Symptom Cause Thermostat does not call for heat Minimum off times Change the mode to OFF first then change the mode to EMERGENCY HEAT and make a call for heat Emergency Heat does not come on at all RH terminal not connected see wiring diagrams Heating equipment po...

Page 34: ... 2 Press and hold both the and buttons for 3 seconds The display will show the ADV SETTINGS MENU 3 Use the or button to highlight SET DIFFERENTIAL and press the SELECT button If the thermostat SINGLE MULTI dip switch is set for MULTI two differentials will appear if set for SINGLE only one will appear 4 To cancel press the BACK button This will return you to the ADV SETTINGS MENU 5 To change the f...

Page 35: ...turn to the ADV SETTINGS MENU press the SELECT button 3 PROGRESSIVE RECOVERY 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 t...

Page 36: ...oint To change the balance points 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 Use the or button to highlight SET BALANCE POINTS and press the SELECT button 4 To cancel press the BACK button This will return you to the ADV SETTINGS MENU 5 To change the low balance point press the or button to raise o...

Page 37: ...r 3 seconds The display will show the ADV SETTINGS MENU 3 Use the or button to highlight INPUT DEALER INFO and press the SELECT button This enters the company name screen 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 delete a character press the BACK button 6 To enter a...

Page 38: ...y the humidity demand This feature can be enabled or disabled and can only be used when an AHC is part of the installation Note To take full advantage of this feature the humidifier should be plumbed to hot water To enable blower extension 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 Use the or butto...

Page 39: ...or button to highlight SETTINGS then press the SELECT button Press the BACK button to cancel 3 Use or button to highlight MONITORS then press SELECT Press BACK to cancel 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 5 Use or button to highlight the amount of time you wish t...

Page 40: ...DP 10006198 01 05 B2203358B Printed in U S A P O BOX 1467 MADISON WI 53701 1467 ...

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