AprilAire Model 8570 - Manuals

- 2 - 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 Zone System). Figure 1 shows optional connections to both an outdoor temperature sensor and an Aprilaire ® Autom...

(2) OPEN THE THERMOSTAT Use your hands to pull the thermostat face off of the base. Separate one side at a time. There are latches oneither side of the thermostat. If needed, the thermostat can be pried from the base by inserting a flat-head screwdriver (see Figure 3 ). - 4 - CAUTION Loss of interna...

- 5 - (3) MOUNT THE THERMOSTAT BASE TO THE WALL 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 . 2. Use the supplied screws and wall anchors to mount the thermostat to the wall. It is recommen...

- 6 - (4) SET THE CONFIGURATION DIP SWITCHES ON THE THERMOSTAT CIRCUIT BOARD ON H/C GAS MULTI 6504 HP ELEC AHC SINGLE Figure 5 There are four dip switcheslocated on the back of thethermostat (on the circuitboard) that must be set toproperly configure thethermostat for operationwith the equipment it ...

- 16 - (6) OPTIONAL – INSTALL AN APRILAIRE MODEL 8052 OUTDOOR TEMPERATURE SENSOR Note: If an AHC is to be installed, do not wire an outdoor temperature sensor– see Step 7. The AHC uses its own outdoor temperaturesensor, which can be read by the thermostat. 1. Mount the outdoor temperature sensor (se...

- 17 - 2. Run a 2-wire cable from the sensor to the thermostat. 3. Take a resistance measurement before connecting to the ODT and CIR GND terminals to verify the sensor isproperly installed. Measure the wires at the thermostat toaccount for wire splices. • Use an ohmmeter to measure the resistance (...

B2203201 Rev. B 24V BYP ASS I+ R I- PO WER H C ODT TE ST / RE SE 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 acontinuous supply – do not wireto furnace accessory terminals. - 20 -

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. 3. Take a resistance me...

- 23 - (9) THERMOSTAT STARTUP – STAND ALONE APPLICATIONS EQUIPMENTSTATUS OUTDOORTEMPERATURE ROOMTEMPERATURE MESSAGECENTER SETPOINTS UP/DOWN BUTTONS MULTI-FUNCTIONBUTTONS

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...

Symptom Cause Thermostat does not call for heat Minimum-off times. Change the mode to OFF first, then change the mode to HEAT and make a call for heat. Heating does not come on at all RH terminal not connected – see wiring diagrams. Heating equipment power not on. Auxiliary Heat does not come on Hig...

- 28 - 7. CHECK COOLING OPERATION Notes: 1. To avoid the minimum off times during system checkout, always start the check out procedure in the OFF mode. 2. Do not operate air conditioning at low outdoor temperatures. Refer to equipment manufacturer’srecommendations for safe operating temperatures. •...

- 29 - 8. CHECK EMERGENCY HEAT OPERATION (Heat Pumps Only) Notes: 1. To avoid the minimum off times during system checkout, always start the check out procedure in the OFF mode. • Set the thermostat to the OFF mode: • Set the thermostat to the EMERGENCY HEAT (EMERG) mode: – The B terminal will energ...

7. MONITORS – AIR FILTER, SERVICE HUMIDIFIER, UV LAMP, SERVICE HVAC The thermostat monitors time and can display scheduledreminders for the user to service their humidifier, change theirfilter and UV lamps, and to remind the user to schedule anHVAC system maintenance check. All monitors are strictly...