Aprilaire 8400 series Guía de configuración

8400 Series Thermostats

READ AND SAVE THESE INSTRUCTIONS

Safety &

Installation

Instructions

2 3

Installation location recommendations................................................................3

Outdoor temperature sensor (optional) ................................................................4

Thermostat mounting..............................................................................5

Power & reset options.............................................................................5

Wiring terminal ..................................................................................6

Wiring diagrams .................................................................................7

TABLE OF CONTENTS

INSTALLATION

SETUP & TESTING

REFERENCES

System setup instructions .........................................................................11

System test mode ...............................................................................16

Quick reference to controls & display

• Non-programmable models (8444, 8446, 8448).....................................................22

• Programmable models (8463, 8465, 8466).........................................................23

Thermostat features .............................................................................24

Troubleshooting .................................................................................25

Specifications...................................................................................27

INSTALLATION

INSTALLATION LOCATION RECOMMENDATIONS

Thermostat should be mounted:

• On an interior wall, in a frequently occupied space.

• Approximately 5‘ above floor.

• At least 18” from outside wall.

• Thermostat can be mounted to a vertical junction box.

Do not mount thermostat:

• Behind doors, in corners, or other dead air spaces.

• In direct sunlight, near lighting fixtures, or other

appliances that give off heat.

• On an outside or unconditioned area wall.

• In the flow of a supply register, in stairwells, or near

outside doors.

• On a wall with concealed pipes or ductwork.

4 5

OUTDOOR TEMPERATURE SENSOR (OPTIONAL)

Outdoor temperature can be measured by attaching an

8052 sensor to the S1 and S2 terminals. System setting

#05 (Remote sensor) is used to enable sensor.

Heat pump models can use the outdoor temperature to

effectively utilize the heat pump:

• When the outdoor temperature is less than the Low

Balance Point, the heat pump will be locked out and

only auxiliary heating will be used.

• When the outdoor temperature is higher than the High

Balance Point, the auxiliary heating will be locked out

and only the heat pump will be used to provide heating.

INSTALLATION

S1 S2 O/B W2 Y2

• Install on side of building out of direct sunlight

(north side recommended).

• Mount above snow line.

• Mount at least 3’ away from exhaust vents and

condensing lines.

• Maximum wire length is 300’.

• Do not route wires along 120 VAC lines.

THERMOSTAT MOUNTING

1. Remove the back of the thermostat, by pressing the

tab on the bottom of the unit.

2. Pull wires through the opening on the back of the

thermostat.

3. Position and level the back of the thermostat on wall

and mark the hole locations with a pencil.

4. Drill 1/4” holes and insert supplied anchors (drywall only).

5. Place back over anchors, insert and tighten screws.

6. Seal wire entry holes to prevent drafts affecting

temperature readings.

INSTALLATION

POWER & RESET OPTIONS

The thermostat is dual power. It can either be AC or

battery powered, or both (to provide backup power for

the clock). Batteries are optional if the thermostat was

connected to AC power when installed.

For heat pump models (8446 and 8465) and universal

models (8448 and 8466) used in heat pump applications

24 VAC must be connected in order for the system fault

and emergency heat indicators to operate.

The thermostat has a memory backup that saves the

thermostat’s settings in case of a power interruption.

The reset button located under the battery cover can be

used to reset the thermostat back to factory defaults.

The system settings will also be reset back to defaults.

6 7

WIRING TERMINAL

Wire specifications

18-24 gauge thermostat wire

Installation notes

• Ensure power at the HVAC equipment is off.

• Loosen screw terminals, insert stripped wire

and re-tighten.

• Push the excess wire back into the opening

and plug the wall opening to prevent drafts.

INSTALLATION

RC – 24 VAC supply cooling*

R– 24 VAC supply heating*

W– 1st stage heat / auxiliary

Y– 1st stage cooling / compressor

G– Fan

C– RC 24VAC common (optional when powered by batteries)

S1 & S2 – outdoor temperature sensor (optional)

O/B – Reversing valve

L– System fault indicator

W2 – 2nd stage heat / auxiliary

Y2 – 2nd stage cooling / compressor

*Jumper between RC & R is used in single transformer systems

(see wiring diagrams).

S1 S2 O/B W2 Y2

WIRING – MODEL 8463 & 8444 SINGLE

TRANSFORMER (USE JUMPER WIRE)

INSTALLATION

RS1 S2

HEATING

COOLING

FAN

OUTDOOR TEMP

SENSOR

JUMPER

TRANSFORMER

WIRING – MODEL 8463 & 8444 TWO

TRANSFORMERS (REMOVE JUMPER WIRE)

RS1 S2

HEATING

COOLING

FAN

OUTDOOR TEMP

SENSOR

HEATING

TRANSFORMER

COOLING

TRANSFORMER

8 9

WIRING – MODEL 8465 & 8446 SINGLE

TRANSFORMER (USE JUMPER WIRE)

INSTALLATION

AUX HEATING

COMPRESSOR

FAN

REVERSE VALVE

FAULT DETECT

OUTDOOR TEMP

SENSOR

JUMPER

TRANSFORMER

S1 S2 O/B

WIRING – MODEL 8465 & 8446 TWO

TRANSFORMERS (REMOVE JUMPER WIRE)

AUX HEATING

COMPRESSOR

FAN

REVERSE VALVE

FAULT DETECT

OUTDOOR TEMP

SENSOR

AUX HEATING

TRANSFORMER

HEAT PUMP

TRANSFORMER

S1 S2 O/B

WIRING – MODEL 8466 & 8448 SINGLE

TRANSFORMER (USE JUMPER WIRE)

FOR HEAT/COOL SYSTEM

INSTALLATION

1st HEATING

1st COOLING

FAN

2nd HEATING

2nd COOLING

OUTDOOR TEMP

SENSOR

NOT USED

JUMPER

TRANSFORMER

S1 S2 O/B W2 Y2

WIRING – MODEL 8466 & 8448 TWO

TRANSFORMERS (REMOVE JUMPER WIRE)

FOR HEAT/COOL SYSTEM

1st HEATING

1st COOLING

FAN

2nd HEATING

2nd COOLING

OUTDOOR TEMP

SENSOR

NOT USED

HEATING

TRANSFORMER

COOLING

TRANSFORMER

S1 S2 O/B W2 Y2

10 11

INSTALLATION

WIRING – MODEL 8466 & 8448 SINGLE

TRANSFORMER (USE JUMPER WIRE)

FOR HEAT PUMP SYSTEM

1st AUX HEATING

1st COMPRESSOR

FAN

REVERSE VALVE

FAULT DETECT

2nd AUX HEATING

2nd COMPRESSOR

OUTDOOR TEMP

SENSOR

HEAT PUMP

TRANSFORMER

S1 S2 O/B W2 Y2

JUMPER

1st AUX HEATING

1st COMPRESSOR

FAN

REVERSE VALVE

FAULT DETECT

2nd AUX HEATING

2nd COMPRESSOR

OUTDOOR TEMP

SENSOR

HEATING

TRANSFORMER

HEAT PUMP

TRANSFORMER

S1 S2 O/B W2 Y2

WIRING – MODEL 8466 & 8448 TWO

TRANSFORMERS (REMOVE JUMPER WIRE)

FOR HEAT PUMP SYSTEM

SYSTEM SETUP INSTRUCTIONS

How to enter the system setup menu to change

system settings

Press repeatedly until system is set to OFF.

Press and hold and for three seconds.

The screen of the first setting will be displayed.

SETUP & TESTING

Press or to change the setting.

Press to change to the next option.

Press after the last setting. “DONE” will be

displayed.

The thermostat will save changes and return to Normal

mode if no key is pressed for 20 seconds.

To reset all system settings back to default, press the

RESET button located under the battery door.

The following instructions show how to enter the system setup menu and change settings. The table on the

following pages lists the settings and their details. Default settings are shown in bold. Some settings are only

available to certain models, and some are specific to thermostats set to heat pump mode.

SYSTEM SETTING NUMBER

SETTING VALUE

12 13

SETUP & TESTING

SYSTEM SETUP INSTRUCTIONS (CONTINUED)

Thermostat models 8448 & 8466 have the option of being used in heat pump or heat/cool systems. The equipment

type switch located on the back of the thermostat’s face is used to select this. System setting number 00 will only be

shown on these models to display the position of the equipment type switch.

EQUIPMENT

TYPE SWITCH

HEAT PUMP

HEAT/COOL

SETUP & TESTING

System setting Setting range, default in bold

00 Equipment type (8466, 8448)

(Set by the equipment type switch)

0 : heat/cool

1 : heat pump

01 Temperature scale 0 : Fahrenheit

1 : Celsius

02 Heat/Cool: Fan control in heating

Heat Pump: Auxiliary equipment type

0 : Gas or oil furnace (Equipment controls fan)

Note: Used for Dual Fuel applications

1 : Electric (Thermostat controls fan)

03 Offset temperature for internal sensor 0° : No offset applied

–4°F to +4°F (–2°C to +2°C)

04 Auto changeover mode 0 : Auto changeover mode is disabled

1 : Auto changeover mode is enabled

05 Outdoor temperature sensor 0 : No outdoor temperature sensor attached

1 : Outdoor temperature sensor attached

06 Compressor minimum off time 5 minutes

1 to 5 minutes in 1 minute steps

07 Heating minimum off time 2 minutes

1 to 5 minutes in 1 minute steps

08 Equipment minimum on time 2 minutes

1 to 5 minutes in 1 minute steps

SYSTEM SETUP INSTRUCTIONS (CONTINUED)

14 15

SETUP & TESTING

System setting Setting range, default in bold

09 1st stage differential 1°F (0.5°C)

1°F to 4°F (0.5°C to 2°C)

10 2nd stage differential (8448, 8466) 1°F (0.5°C)

1°F to 4°F (0.5°C to 2°C)

11 3rd and 4th stage differential (8448HP, 8466HP) 1°F (0.5°C)

1°F to 4°F (0.5°C to 2°C)

12 Reverse valve (8446, 8448HP, 8465, 8466HP) 0 – O/B energized in cooling (O)

1 – O/B energized in heating (B)

13 Stage rate* 2

1 to 5 or “OFF” to disable

14 Deadband (auto mode) 3°F (2°C)

2°F to 5°F (1°C to 3°C)

15 Progressive recovery (8463, 8465, 8466) 0 : Progressive recovery is disabled

1 : Progressive recovery is enabled

16 Low Balance Pt. (8446, 8448HP, 8465, 8466HP)

System setting 05 must be enabled

20°F (-7°C)

0°F to 60°F (-18°C to 16°C) or “OFF” to disable

*Accumulation of equipment run time in equipment staging determination.

1 = more rapid staging of equipment (comfort).

5 = slower staging of equipment (economy).

SYSTEM SETUP INSTRUCTIONS (CONTINUED)

SETUP & TESTING

System setting Setting range, default in bold

17 High Balance Pt. (8446, 8448HP, 8465, 8466HP)

System setting 05 must be enabled

65°F (18°C)

0°F to 80°F (-18°C to 27°C) or “OFF “ to disable

19 Program format (8463, 8465, 8466) 0 – 5/2 program (Weekdays and Weekends)

1 – 5/1/1 program (Weekdays, Sat. and Sun.)

20 Change air filter OFF

1, 3, 6, 12 months or “OFF” to disable

21 Change water panel**

Set number of months until reminder is required

OFF

1 to 12 months or “OFF” to disable

22 Humidifier type** 0 : Flow through type humidifier (1 reminder per season)

1 : Drain-less type humidifier (2 reminders per season)

23 Service dehumidifier OFF

1 to 12 months or “OFF” to disable

24 Service HVAC OFF

1 to 12 months or “OFF” to disable

25 2 or 4 Program Events 0 = WAKE and SLEEP

1 = WAKE, LEAVE, RETURN, SLEEP

**If humidifier type is set to Drain-less, then the first reminder is based on the system setting 21, second

reminder will activate 3 months later. If humidifier type is set to Flow through, then the first reminder is based

on system setting 21, second reminder will activate 12 months later.

SYSTEM SETUP INSTRUCTIONS (CONTINUED)

16 17

SYSTEM TEST MODE

The system test mode is used to test a system after installation. The outputs of the thermostat can be manually

activated one at a time to test their function. The following instructions show how to enter the test mode and turn

outputs on and off. The charts on the following pages show all of the options for each model.

The test steps are:

SETUP & TESTING

Test

Number

Heat/Cool Models

8444, 8463, 8448HC, 8466HC

Heat Pump Models

8446, 8465, 8448HP, 8466HP

50 Heating (W) (W2) Aux Heating (W) (W2)

51 Cooling (Y) (Y2) Compressor Cooling (Y) (Y2)

52 Fan (G) Compressor Heating (Y) (Y2)

53 Fan (G)

How to enter the system test menu

Press repeatedly until system is set to OFF.

Press and hold and for three seconds.

The screen of the first test step #50 is displayed:

SYSTEM TEST MODE (CONTINUED)

SETUP & TESTING

Press to turn on the output (01). For multi stage

output, press again to turn on the 2nd stage (02).

Press to turn off the output (00).

Press to change to the next test step.

Press after the last test step. “DONE” will be

displayed.

The thermostat will return to Normal mode if no key is

pressed in 20 seconds.

SYSTEM TEST

NUMBER

OUTPUT STATUS

FLASHES IF 24VAC

IS NOT PRESENT

MODE (SW1 SETTING

8448 & 8466 ONLY)

18 19

SETUP & TESTING

Test steps for 8444 & 8463

Step Key Input

System Setting Display (Output)

HEATING

ON (W)

COOLING

ON (Y)

FAN ON

(G)

#50 Heat [UP] 0 : Gas ON

1 : Elec ON ON

[DOWN]

#51 Cool [UP] ON ON

[DOWN]

#52 Fan [UP] ON

[DOWN]

SETUP & TESTING

Test steps for 8448HC & 8466HC

Step Key Input

System Setting Display (Output)

HEATING

ON (W)

HEATING

ON (W2)

COOLING

ON (Y)

COOLING

ON (Y2)

FAN ON

(G)

#50 Heat

1st [UP] 0 : Gas ON

1 : Elec ON ON

2nd [UP] 0 : Gas ON ON

1 : Elec ON ON ON

[DOWN]

#51 Cool

1st [UP] ON ON

2nd [UP] ON ON ON

[DOWN]

#52 Fan [UP] ON

[DOWN]

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