Aprilaire 8140 - User Manual

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Model 8140 and 8140NC Fresh Air Ventilator

Installation and Operating Instructions

MODEL 8140 FRESH AIR VENTILATOR MODEL 8140NC FRESH AIR VENTILATOR

SAFETY INSTRUCTIONS

WARNING

1. 120 Volts may cause serious injury from electric shock. Disconnect electrical power before starting installation or servicing. Leave power

disconnected until installation/service is completed.

2. Sharp edges may cause serious injury from cuts. Use care when cutting plenum openings and handling duct work.

CAUTION

1. Read all instructions before beginning installation.

2. Improper installation may cause property damage or injury. Installation, service, and maintenance must be performed by a qualiﬁed service

technician.

READ AND SAVE THESE INSTRUCTIONS

VENTILATION CONTROLLERFILTER COVER

INLET

COLLAR

VENTILATION TERMINALS

FILTER COVER

INLET COLLAR AND

NORMALLY CLOSED

POWER DAMPER

OUTLET

COLLAR

OUTLET

COLLAR

WALL MOUNT

BRACKET LOCATION

JOIST MOUNT

BRACKET LOCATION

TABLE OF CONTENTS

Safety Instructions ...............................................1

Introduction and Compliance Statement ...........................2

Specifications ...................................................2

Install Electrical Outlet............................................2

Ventilator Location and Orientation................................3

Mount the Ventilator .............................................3

Mount Intake Hood ..............................................4

Install Ductwork .................................................4

Model 8140NC – Wiring to Various Controls ........................5

Model 8140NC – Test Mode .......................................6

Model 8140NC – Sequence of Operation ...........................6

Model 8140 – Wiring the Control to the HVAC System ...............6

Model 8140 – Connecting the Control to the Ventilator ..............7

Model 8140 – Operation ..........................................7

Model 8140 – Set Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Model 8140 – Test Mode ..........................................9

Model 8140 – Rater/Inspector Verification .........................10

Model 8140 – Sequence of Operation .............................10

Filter Cleaning...................................................11

Internal Schematics ..............................................11

Limited Warranty ...............................................12

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Summary

Safety Instructions

WARNING

Critical safety warnings about electrical shock and sharp edges during installation and handling.

CAUTION

Important safety notes on reading instructions before installation and using qualified technicians.

MODEL 8140 NC - WIRING TO VARIOUS CONTROLS

Wiring to IAQ Control

Diagram for connecting to Aprilaire IAQ Control models.

Wiring to Thermostat

Diagram for connecting to Aprilaire 8620/8620W thermostat.

Wiring to Digital Controller

Diagrams for connecting to Model 8120A and 8120X controllers.

MODEL 8140 - WIRING THE CONTROL TO THE HVAC SYSTEM

MODEL 8140 - CONNECTING THE CONTROL TO THE VENTILATOR

MODEL 8140 - SET UP

Entering Set Up Menu

Instructions for initiating the setup process using control buttons.

Configuration Parameters

Details on setting parameters like bedrooms, square footage, temperature limits, and modes.

MODEL 8140 - RATER;INSPECTOR VERIFICATION

MODEL 8140 - SEQUENCE OF OPERATION

LIMITED WARRANTY

Warranty Terms

Details the five-year limited warranty for defects in materials or workmanship.

Summary

Safety Instructions

WARNING

Critical safety warnings about electrical shock and sharp edges during installation and handling.

CAUTION

Important safety notes on reading instructions before installation and using qualified technicians.

MODEL 8140 NC - WIRING TO VARIOUS CONTROLS

Wiring to IAQ Control

Diagram for connecting to Aprilaire IAQ Control models.

Wiring to Thermostat

Diagram for connecting to Aprilaire 8620/8620W thermostat.

Wiring to Digital Controller

Diagrams for connecting to Model 8120A and 8120X controllers.

MODEL 8140 - WIRING THE CONTROL TO THE HVAC SYSTEM

MODEL 8140 - CONNECTING THE CONTROL TO THE VENTILATOR

MODEL 8140 - SET UP

Entering Set Up Menu

Instructions for initiating the setup process using control buttons.

Configuration Parameters

Details on setting parameters like bedrooms, square footage, temperature limits, and modes.

MODEL 8140 - RATER;INSPECTOR VERIFICATION

MODEL 8140 - SEQUENCE OF OPERATION

LIMITED WARRANTY

Warranty Terms

Details the five-year limited warranty for defects in materials or workmanship.

The Aprilaire Model 8140 and 8140NC Fresh Air Ventilators are designed to introduce precisely controlled amounts of outdoor air into energy-efficient homes. These devices duct outdoor air into the HVAC system, providing mechanical ventilation that meets various building codes and standards, including Energy Star Certified Homes, EPA Indoor airPLUS, International Residential Code (IRC), International Energy Conservation Code (IECC), and California Energy Commission Title 24.

Function Description:

The ventilator's primary function is to bring fresh outdoor air into the home while minimizing energy consumption. It achieves this by integrating with the existing HVAC system. The built-in control (for Model 8140) or an external control (for Model 8140NC) manages the ventilation schedule, automatically compensating for missed ventilation time during extreme outdoor temperatures by increasing airflow during milder periods. The control also ensures that ventilation occurs for at least one hour every four hours. The Model 8140NC, lacking an integrated control, requires wiring to various external controls such as Aprilaire IAQ Control Models (8910, 8910W, 8920W), Aprilaire Thermostat Models (8620, 8620W), or Model 8120A/8120X Digital Ventilation Controllers.

Important Technical Specifications:

The ventilator operates on 115 VAC, 1 phase, 60 Hz.

Airflow (CFM) vs. External Static Pressure ("w.c.):
- 0.0 "w.c.: 285 CFM
- 0.2 "w.c.: 250 CFM
- 0.4 "w.c.: 195 CFM
- 0.6 "w.c.: 130 CFM
- 0.8 "w.c.: 25 CFM
Current (amps): Consistently 0.4 amps across all static pressures.
Power (watts): Ranges from 53 watts at 0.0 and 0.2 "w.c. down to 44 watts at 0.8 "w.c.
Efficacy (CFM/watt): Ranges from 5.39 CFM/watt at 0.0 "w.c. down to 0.52 CFM/watt at 0.8 "w.c.
Dimensions:
- Length: 27.75 inches
- Width: 17.15 inches
- Height: 14.31 inches (ventilator body), 11.60 inches (control module for Model 8140)
Duct Connections:
- Inlet: Round collar for 6" diameter duct
- Outlet: Oval collar for 6" diameter duct
Weight: Approximately 25 pounds.

Usage Features:

Flexible Mounting: The ventilator can be mounted in any orientation (to joists, wall, or ceiling) using supplied brackets and screws. Clearances of 10 inches for filter access and 24 inches for motor access are recommended.
Ductwork Integration: Requires 6" diameter flexible, insulated ductwork from the intake hood to the unit's inlet and from the unit's oval outlet to the return side of the HVAC system. Proper sealing of insulation is crucial to prevent condensation.
Electrical Connection: Plugs into a standard NEMA 5-15 receptacle. The unit comes with a 6-foot, 3-prong power cord.
Model 8140 Control Features:
- Display: Shows ventilation time setting (minutes/hr), mode of operation (Code or Comfort), and whether the HVAC fan is on.
- Set Up Menu: Allows configuration of parameters such as HVAC system type (HP or HC), number of bedrooms, house square footage, measured outdoor airflow (CFM), high and low temperature limits for ventilation, HVAC fan operation mode (ON, bLnd, OFF), and control mode (code or cFrt) with optional RH limits.
- Code Mode: Ventilation occurs with heating, cooling, or fan calls for a set duration. Compensates for missed ventilation due to temperature limits by adjusting cycle periods (1, 4, 8, 12, 24 hours) and increasing total ventilation time to meet ASHRAE 62.2-2010 requirements.
- Comfort Mode: Ventilation occurs with heating, cooling, or fan calls if outdoor temperature and indoor RH are within set limits. Missed ventilation due to limits is not made up.
- Test Mode: Allows verification of ventilator blower, damper operation, and HVAC blower activation.
- Rater/Inspector Verification: Displays calculated Required Continuous CFM and Measured CFM to ensure compliance.

Maintenance Features:

Filter Cleaning: The fresh air filter should be removed and cleaned every six months, with an initial check after three months to determine optimal cleaning frequency. The filter door is secured by two screws. The plastic filter retainer rotates to release the filter. The filter can be rinsed with water.
Intake Hood Screen Cleaning: The screen at the fresh air intake hood on the outside of the house should also be cleaned regularly, as a clogged screen is a common cause of reduced ventilation.