Aprilaire Model 8570 User Manual

Premium Programmable Thermostat

Safety & Installation

Instructions

Model 8570

READ AND SAVE THESE INSTRUCTIONS

TABLE OF CONTENTS

PAGE

SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

WIRE REQUIREMENTS. . . . . . . . . . . . . . . . . . . . . . . . 2

1. SELECT A MOUNTING LOCATION. . . . . . . . . . . 3

2. OPEN THE THERMOSTAT . . . . . . . . . . . . . . . . . 4

3. MOUNT THE THERMOSTAT BASE

TO THE WALL . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

4. SET THE CONFIGURATION DIP SWITCHES

ON THE THERMOSTAT 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 SENSOR . . . . . . . . . . . . . . . . . 16

PAGE

7. OPTIONAL – INSTALL AN AUTOMATIC

HUMIDIFIER CONTROL (AHC) . . . . . . . . . . . . . 19

8. OPTIONAL – INSTALL AN INDOOR

TEMPERATURE SENSOR . . . . . . . . . . . . . . . . . 21

9. THERMOSTAT STARTUP . . . . . . . . . . . . . . . . . 23

Verify Outdoor Temperature Sensor . . . . . . . . . . 24

Check Fan Operation . . . . . . . . . . . . . . . . . . . . . . 24

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

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. 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.

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 Thermostat. For questions call

Research Products Corporation at (800) 334-6011.

SAFETY INSTRUCTIONS

- 1 -

MODEL 8570 SPECIFICATIONS

Electrical

Thermostat Voltage: 24-volts ± 20% AC or DC

Total Load Current: 2A

Single Output Load Current: 1A

Solid State Output Residual Current: Less than 5 mA

Voltage Drop at Solid State 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 1°F – 4°F

- 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®Automatic Humidifier Control (AHC), but only one or the other can be used. All wire is standard 18-24 gauge thermostat cable.

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 18-24 gauge thermostat cable.

OPTIONAL –

AUTOMATIC HUMIDIFIER

CONTROL

(AHC)

HVAC

EQUIPMENT

MODEL 8570

THERMOSTAT

SEE

TABLE

2-WIRES

OPTIONAL –

OUTDOOR

TEMPERATURE

SENSOR

OPTIONAL –

INDOOR

TEMPERATURE

SENSOR

MODEL 8570

THERMOSTAT

MODEL 65044-WIRES

Application # Wires Diagram (Page)

Single-Stage Furnace/AC 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, 6 5 (13) Furnace 2nd Stage and AC

Single-Stage Heat Pump 6 6 (14)

Two-Stage Heat Pump 8 7 (15)

WIRE REQUIREMENTS

Figure 1 – Thermostat Wire

Figure 2 – Model 6504 Wire

- 3 -

(1) SELECT A MOUNTING LOCATION

If installing the thermostat alone…

• 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.

• Thermostat can be mounted to a vertical junction box (j-box).

• DO NOT mount the thermostat:

– behind doors, in corners or other dead air spaces. – in direct sunlight or near 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 where it can be readily accessed. Note that the backlighting illuminates whenever a button is pressed.

• Thermostat can be mounted on a vertical junction box (j-box).

• DO NOT mount the thermostat where the operating range temperatures will be exceeded (i.e. attic or unventilated equipment room).

• Mount the sensor in the same location as if installing a thermostat alone.

(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 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).

- 4 -

CAUTION

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. PULL THE HOUSINGS APART WITH YOUR HANDS TO COMPLETELY SEPARATE.

Figure 3

- 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 recommended that wall anchors be used for installation to 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

CAUTION

Minimize wire entry hole size and seal the hole – drafts from inside the wall could affect temperature readings.

Figure 4

- 6 -

(4) SET THE CONFIGURATION DIP SWITCHES ON THE THERMOSTAT CIRCUIT BOARD

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.

6504

GAS

MULTI

H/C

AHC

ELEC SINGLE

If installing this thermostat as part of a Model 6504 Intelligent Zone System, refer to the Model 6504 Installation Manual for wiring and checkout procedures. Continue Model 6504 installation with Step 10 (page 30).

If wiring this thermostat directly to the HVAC equipment or standard zone control panel, continue with Step 5.

- 7 -

STOP!

6504 or AHC – This switch is used to configure the thermostat

installation as part of a Model 6504 Intelligent Zone System.

• Set to 6504 only if installing as part of a Model 6504 Intelligent Zone System.

• Set to AHC if the thermostat is to be wired to the HVAC equipment or standard zone system.

GAS or ELEC – When set to ELEC, the fan terminal (G) will be energized 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 energize.

• Set to SINGLE for single-stage furnace/AC applications or single-stage compressor heat pump systems.

• Set to MULTI if the furnace or air conditioner is two-stage or if the heat pump has a two-stage compressor.

HEAT/COOL or HEAT PUMP – When set to HP the compressor terminal (Y1) is the first stage output for both heating and cooling.

• 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.

- 8 -

1. Run a cable with the correct number of wires (see table) from the thermostat to the HVAC equipment.

2. Strip 1/4" of insulation from the end of the wires to be connected to the thermostat.

3. Strip no more insulation than is required to make a sound electrical connection at the HVAC equipment.

4. Wire the thermostat to the HVAC equipment according to the wiring schematic 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 Roof Top Unit 7 3 (11)

Boiler w/AC (2-transformer) 6 4 (12)

Radiant 1st Stage Heat, 6 5 (13) Furnace 2nd Stage and AC

Single-Stage Heat Pump 6 6 (14)

Two-Stage Heat Pump 8 7 (15)

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