Aprilaire 8120X Installation & Operating Instructions Manual
Digital ventilation controller
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- Installation and operation manual (11 pages) ,
- Installation & operating instructions manual (24 pages)
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Summary of Contents for Aprilaire 8120X
- Page 1 INSTALLATION & OPERATING INSTRUCTIONS Model 8120X Ventilation Digital Ventilation Controller Installed By: Installer Phone: Date Installed: Product Info & Digital Manual PLEASE LEAVE THIS MANUAL WITH THE PRODUCT OWNER...
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Page 2: Table Of Contents
TABLE OF CONTENTS SAFETY INSTRUCTIONS 3 PACKAGE CONTENTS 4 SPECIFICATIONS 4 MOUNTING THE CONTROLLER AND OUTDOOR TEMPERATURE SENSOR 5... -
Page 3: Safety Instructions
SAFETY INSTRUCTIONS WARNING • ATTENTION INSTALLER: Read this manual before installing. Improper installation or maintenance may cause property damage or injury. It is recommended that installation, service, and maintenance be performed by a trained service technician. This product must be installed in compliance with all local, state, and federal codes. -
Page 4: Package Contents
PACKAGE CONTENTS 90-2261 A. CONTROL B. WALL PLATE C. DUCT BOARD BRACKET D. OUTDOOR TEMP SENSOR E. #8 X 5/8” HEX HEAD SHEET METAL SCREW (2) F. #8 X 1/2” PAN HEAD TYPE 25 SCREW (2) G. INSTALLATION MANUAL SPECIFICATIONS Operating Temperature Range 20°F to 140°F Maximum Load on VENT and Gh Outputs... -
Page 5: Mounting The Controller And Outdoor Temperature Sensor
MOUNTING THE CONTROLLER AND OUTDOOR TEMPERATURE SENSOR MOUNTING THE CONTROLLER TO THE RETURN DUCTWORK SHEET METAL INSTALLATION 1. Remove the wall plate from the control and put the rest of the control in a safe location until after wiring is completed 2. - Page 6 DUCT BOARD INSTALLATION 1. Take out the duct board mounting bracket, remove the wall plate from the control and put the rest of the control in a safe location until after wiring is completed 2. Cut a 575” x 525” rectangular opening in the return plenum Save the piece cut out to insulate the duct board bracket around the controller The display of the control will run parallel with the long dimension Do not mount the control in a position where it is facing down.
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Page 7: Mounting The Controller In A Closet Return Plenum
MOUNTING THE CONTROLLER IN A CLOSET RETURN PLENUM NOTE: Do not mount directly in the path of the outdoor air Mount the control where it will sense the relative humidity of the return air 1. Use spacers or brackets to mount the controller to an interior wall surface or return plenum/duct surface that is at room temperature (ie do not mount to supply ductwork or to the air handler/furnace) to space the wall bracket a minimum of 1/2”... -
Page 8: Mounting The Outdoor Temperature Sensor
MOUNTING THE OUTDOOR TEMPERATURE SENSOR 1. Drill a 3/8” diameter hole in the duct of the fresh air inlet hood 2. Install the outdoor temperature sensor into the duct and use metal foil tape to secure it in place and seal the opening Run the wire toward the inside of the exterior wall 3. -
Page 9: Wiring
(Model 8140NC or Model 8145NC), FIGURE 4 (Model 8142NC), FIGURE 5 (Model 8144NC) or FIGURE 6 (damper) (continued on page 12) FIGURE 1: WIRING TO FURNACE MODEL 8120X DIGITAL VENTILATION CONTROL THERMOSTAT OR ZONE PANEL VENT R & C = 24 VAC... -
Page 10: Wiring To Heat Pump
FIGURE 2: WIRING TO HEAT PUMP HEAT PUMP THERMOSTAT MODEL 8120X OR ZONE PANEL DIGITAL VENTILATION CONTROL Y W1 VENT R & C = 24 VAC Y = COMPRESSOR HEAT PUMP W1 = 1st STAGE AUX. HEAT O = REV. VALVE, COOLING... -
Page 11: Wiring To Model 8142Nc Fresh Air Ventilator
FIGURE 4: WIRING TO MODEL 8142NC FRESH AIR VENTILATOR MODEL 8120X DIGITAL VENTILATION CONTROLLER* VENT * Outdoor Temperature is supplied by the control and is required for optimal ventilation control. 24 VAC VENT FIGURE 5: WIRING TO MODEL 8144NC FRESH AIR VENTILATOR... -
Page 12: Wiring To Model 6506 Damper
FIGURE 6: WIRING TO MODEL 6506 DAMPER VENT 24 VAC MODEL 6506 DAMPER PROVIDED WITH MODEL 8126X 120 VAC 24 VAC, 10VA TRANSFORMER PROVIDED WITH MODEL 8126X WIRE (continued from page 9) CHANNEL 4. Route the wires into the channels in the back of the control to either the top or bottom of the control... -
Page 13: Operation
OPERATION NOTE: The display will appear faint normally; the first press of any button will turn on the display at full power SHOWS THE VENTILATION TIME SETTING (MIN/HR), MODE OF OPERATION (CODE OR COMFORT) AND WHETHER THE HVAC FAN HAS BEEN TURNED ON WHEN VENTILATING USE FOR USE TO OVERRIDE THE CALCULATED... -
Page 14: Set Up Menu
SET UP MENU NOTICE Before setting up the control for use, the amount of ventilation air being delivered (CFM) by the installed ventilation system must be measured. Hold for 5 seconds, then release Throughout the Set Up Menu, the buttons are used to change values, the Select button is used enter the value and move on to the next Set Up Menu item... - Page 15 TABLE 1: SET UP MENU Menu Item Values Description HP if wiring to a heat pump HP or HC HC if wiring to furnace and AC CODE ASHRAE code year. A 10 or A 13 A 10 for ASHRAE 622 2010 A 13 for ASHRAE 622 2013 CODE # BEDROOMS...
- Page 16 TABLE 1: SET UP MENU Menu Item Values Description CODE # BEDROOMS HIGH Only available when bLnd is selected When the OFF, 60°F to 5°F less than outdoor temperature is above the setting, the °F Vent High HVAC fan will be turned on to mix (blend) outdoor Temp Limit air with indoor air for tempering MEAS REQ’D CONT CFM...
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Page 17: Test Mode 17
TEST MODE After wiring and set up have been completed, Test Mode can be used to verify that all components in the ventilation system function and that wiring to the HVAC system fan is correct Hold for 5 seconds TABLE 2: TEST MODE MENU Test Sequence Description Shows - - - - °F to indicate that no separate outdoor temperature... -
Page 18: Rater/Inspector Verification
Required continuous CFM after the infiltration credit is subtracted can be significantly lower than the ASHRAE 622-2013 base calculation The calculation performed by the 8120X control with menu setting A13 does not account for the infiltration credit. The required continuous CFM must be manually adjusted to account for this infiltration credit. -
Page 19: Sequence Of Operation
SEQUENCE OF OPERATION “CODE” SETTING The control will turn on ventilation with a heating, cooling or fan call for the set number of minutes during a one-hour cycle period • If outdoor temperature is above the high temperature limit, ventilation will not occur with a call for cooling or fan call •... -
Page 20: Comfort" Setting 20
“COMFORT” SETTING The control will turn on ventilation with a heating, cooling or fan call by the HVAC equipment, if the outdoor air temperature is within the high and low ventilation temperature limits and the indoor RH is within the high and low RH limits, for the set number of minutes during a one-hour cycle period If the HVAC equipment does not turn on enough to meet the ventilation time within the hour, the control will turn on ventilation without a call, if the outdoor air temperature and indoor RH is within the... - Page 21 TABLE 4: TROUBLESHOOTING GUIDE Code Explanation Correction Ventilator or Fresh Air Review wiring diagrams and ensure Damper does Incorrect installation proper control installation not operate in Test Mode Ventilation should not occur when Ventilator outdoor temperature and humidity or Fresh Air are outside programmed limits If Measured conditions are Damper only...
- Page 22 TESTING ODT SENSOR RESISTANCE TABLE 5 Outdoor Resistance 1. Disconnect the ODT sensor leads Temperature (°F) (kΩ) ±10 from the control terminals 2318 2. Measure the resistance across the 1634 wires with an ohmmeter 1173 3. Confirm the reading with the temperature in TABLE 5 848 4.
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Page 23: Limited Warranty
Limited Warranty with a genuine AprilAire part A defective product will be replaced pursuant to this Limited Warranty with a new AprilAire product of equal or similar features and functionality if the original product has been discontinued or is no longer available Not Covered by the Limited Warranty •... - Page 24 18003346011 Monday through Friday, 7:00 am to 5:00 pm Central Time At the sole discretion of AprilAire, you may be required to: return the product not later than thirty (30) days after the warranty period to the place of purchase or (if directed) to AprilAire, contact a professional...
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