Aprilaire V42SNA Installation & Operating Instructions Manual
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Aprilaire V42SNA Installation & Operating Instructions Manual

Aprilaire V42SNA Installation & Operating Instructions Manual

Fresh air ventilator
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Ventilation
Installed By:
OUTLET COLLAR

TABLE OF CONTENTS

INTRODUCTION AND COMPLIANCE STATEMENT                     1
SAFETY INSTRUCTIONS                                              2
SPECIFICATIONS                                                     2
INSTALL ELECTRICAL OUTLET                                        2
VENTILATOR LOCATION AND ORIENTATION                         3
MOUNT THE VENTILATOR                                           3
MOUNT INTAKE HOOD                                               4
INSTALL DUCTWORK                                                 5
WIRING                                                              5
SET UP                                                               6
TEST                                                                  6
DETERMINE VENTILATION TIME SETTING                            6
MEASURE DELIVERED AIRFLOW                                      6
START UP AND SEQUENCE OF OPERATION                          7
TROUBLESHOOTING                                                 8
LIMITED WARRANTY                                                 8
INLET COLLAR
READ AND SAVE THESE INSTRUCTIONS
INSTALLATION & OPERATING INSTRUCTIONS
Model V42SNA
Fresh Air Ventilator
Installer Phone:
INTRODUCTION AND COMPLIANCE
The Aprilaire® Model V42SNA Fresh Air Ventilator is designed to
bring in precisely the right amount of outdoor air into today's
efficiently designed homes. Duct the inlet of the ventilator to an
outdoor air intake and duct the discharge to the HVAC system
and then simply plug the unit in, set the amount of needed
ventilation and select the desired temperature limits.
High/low temperature limits are set on the control to prevent
bringing in outdoor air during the hottest or coldest period of
the day The built in control will automatically compensate for
the ventilation time that is missed by bringing in additional
outdoor air Compliance with the requirements of ASHRAE 622
is met as the control adds ventilation time as needed to
account for the fractional on-time and effectiveness of the
ventilation schedule. The control will also ensure that ventilation
occurs no less than one hour of every four. When properly
installed and set, the Model V42SNA Fresh Air Ventilator will
meet the mechanical ventilation requirements of:
• Energy Star Certified Homes, Version 3
• 2012 International Residential Code (IRC)
• 2012 International Energy Conservation
Code (IECC)
Date Installed:
MOUNTING BRACKET
VENTILATION CONTROLLER
STATEMENT
90-02836
Product Info &
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Summary of Contents for Aprilaire V42SNA

  • Page 1: Table Of Contents

    SAFETY INSTRUCTIONS                                              2 The Aprilaire® Model V42SNA Fresh Air Ventilator is designed to bring in precisely the right amount of outdoor air into today’s...

  • Page 2: Safety Instructions

    SAFETY INSTRUCTIONS SPECIFICATIONS WARNING TABLE 1: DESIGN AIRFLOW AND EFFICACY External Static Airflow Current Efficacy • ATTENTION INSTALLER: Read this manual before installing. Pressure* (“w.c.) (CFM) (amps) (CFM/watt) Improper installation or maintenance may cause 330 property damage or injury. It is recommended that 296 installation, service, and maintenance be performed by a trained service technician.

  • Page 3: Ventilator Location And Orientation

    VENTILATOR LOCATION AND ORIENTATION MOUNT THE VENTILATOR 1. Attach the mounting bracket to ventilator using the (4) Choose a location for the ventilator that is within 6 feet of the outlet into which the ventilator will be plugged. The ventilator provided screws.

  • Page 4: Mount Intake Hood

    MOUNT INTAKE HOOD FIGURE 5: MOUNTING BRACKET (INCHES) Install a weather tight hood with a bird screen KEYHOLE 1.24 TYPICAL Cut a hole in the exterior wall that is large enough to fit 6” insulated flexible duct through with minimal compression of the insulation.

  • Page 5: Install Ductwork

    INSTALL DUCTWORK FIGURE 10: ALTERNATE – VENTILATOR DOES NOT TURN ON THE HVAC SYSTEM BLOWER Install 6” diameter flexible, insulated duct from the round inlet collar of the unit to the intake hood and from the oval outlet THERMOSTAT collar of the unit to the supply or return side of the HVAC system VENTILATION CONTROL If the fresh air is being discharged into the return side, a Model USED...

  • Page 6: Set Up

    SET UP DETERMINE VENTILATION TIME SETTING The control can be set up to prevent ventilation during the CALCULATING AIRFLOW REQUIREMENT hottest or coldest periods of the day. When the outdoor temperature exceeds the high value or falls below the low 1.

  • Page 7: Start Up And Sequence Of Operation

    4. Use TABLE 3, to convert the pressure reading to delivered TABLE 4: CYCLE TIME SETTING (MINUTES) FOR AIRFLOW airflow. If the pressure reading falls between listed values, DELIVERED VS. AIRFLOW REQUIRED FOR 1 HOUR CYCLE either use the lower value or interpolate between values: CFM = Lower Value + [(Higher Value –...

  • Page 8: Troubleshooting

    5:00 p.m. Central Time. • Modifications, changes, repurposing, or alterations to the AprilAire product. At the sole discretion of AprilAire, you may be required to: return the product not • Extended warranties or satisfaction guarantees offered by third parties.

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