Install Instructions

ManualsBrandsAprilaire ManualsHVAC SuppliesFresh Air Ventilator w/ Backdraft Damper & Filter

Model 8140 & 8141 Fresh Air Ventilator

Installation and Operations Manual

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.

VENTILATION CONTROLLERFILTER COVER

INLET COLLAR OUTLET COLLAR

TABLE OF CONTENTS

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

Wiring ...........................................................5

Set Up ...........................................................5

Test .............................................................5

Determine Ventilation Time Setting.................................6

Start Up and Sequence of Operation................................6

Troubleshooting ..................................................7

Limited Warranty .................................................8

Summary of content (8 pages)

PAGE 1
Model 8140 & 8141 Fresh Air Ventilator Installation and Operations Manual FILTER COVER VENTILATION CONTROLLER INLET COLLAR OUTLET COLLAR 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.
PAGE 2
INTRODUCTION AND COMPLIANCE STATEMENT The Model 8140 & 8141 Fresh Air Ventilators are 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, then simply plug the unit in, set the amount of needed ventilation and select the desired temperature limits.
PAGE 3
VENTILATOR LOCATION AND ORIENTATION CAUTION FIGURE 2 – CLEARANCES FOR SERVICING 1. Mount the blower with the lowest, exposed moving parts at least 8 feet (2.4 m) above floor or grade level. 2. Mount the blower at least 3.3 feet (1.0 m) from any accessible opening of the duct. Choose a location for the ventilator that is within 6 feet of the outlet into which the ventilator will be plugged. Allow space for filter removal and service as shown in FIGURE 2.
PAGE 4
MOUNT INTAKE HOOD Install a weather tight hood with a bird screen. Cut a hole in the exterior wall that is large enough to fit 6" insulated flexible duct through with minimal compression of the insulation. Pull the duct through the hole and attach the flex duct to the collar of the hood. Use metal foil tape or a plastic zip-tie to secure the duct to the collar. Pull the insulation and vapor barrier over the duct and tape it to the collar.
PAGE 5
WIRING The ventilator control is wired to the HVAC equipment as shown in FIGURE 7 to provide the control with power and to signal the control that the HVAC system is operating. When ventilation is needed but the HVAC system is not running, the ventilator will turn on the HVAC system blower to temper the outdoor air by mixing it with indoor air. FIGURE 7 – VENTILATOR WIRING THERMOSTAT R C W Y WIRE NUT – FIELD SUPPLIED G VENTILATION CONTROL 1.
PAGE 6
DETERMINE VENTILATION TIME SETTING CALCULATING AIRFLOW REQUIREMENT TABLE 2 – CFM REQUIRED 1. The MINIMUM ventilation requirement is calculated using ASHRAE 62.2-2010. House Sq. Ft. Number of Bedrooms 2 3 4 1000 35 40 50 1500 40 45 55 Note: Use ‘Number of Bedrooms + 1’ or ‘Number of Occupants’, whichever is larger. 2000 45 50 60 2500 50 55 65 2. TABLE 2 shows the calculated airflow values to the nearest 5 CFM.
PAGE 7
temperature above the high limit setting, it would turn off after five minutes. The control will automatically change the cycle period to four hours and work to provide the additional 95 total minutes of ventilation (25 min/hr x 4 hours = 100 minutes, minus the five minutes of the first air sampling) during the four-hour cycle period. If the air temperature is still out of range, the control will automatically switch to an 8-hour cycle period, then a 12-hour cycle period and finally a 24-hour cycle period.
PAGE 8
TABLE 4 – TROUBLESHOOTING GUIDE Symptom Possible Reason Correction Ventilator and display on control do not turn on. No power to the control. • Wire the control to the HVAC system as shown in FIGURE 7. E3 shows on display. Sensor inside the control is damaged. • Replace control. Air is blowing out of the intake hood when ventilator is off. 8141: Backdraft damper is open. • Make sure the unit is mounted in the proper orientation – outlet cannot point down. 8140: Power damper is stuck open.