Honeywell W8150 Fresh Air Ventilation Control User Manual

Honeywell W8150 Fresh Air Ventilation Control

PRODUCT DATA

FEATURES

• Designed to help meet local ventilation codes and standards, including ASHRAE 62.2-2010 standard, “Ventilation and Acceptable Indoor Air Quality in Low-Rise Residential Buildings.”
• Microcontroller optimizes the air delivery schedule to make efficient use of normal HVAC run times.
• Easy-to-use input dials allow customized ventilation for each installation.
• Test mode that includes immediate feedback to the installer to confirm that the air delivery requirements of the selected ventilation standard are being met.
• Economical supply-only ventilation; works with a forced air system.
• Can be used with other equipment, such as an HRV/ ERV, for balanced ventilation.

IMPORTANT

Please read these instructions and keep them in your records.

SPECIFICATIONS

Y8150 includes:

• W8150A Fresh Air Ventilation Control.
• EARD6 Fresh Air Damper.
• AT120B Transformer.
• Mounting hardware for control.
• Homeowner information label.

W8150 includes:

• W8150 Fresh Air Ventilation Control.
• Mounting hardware for control.
• Homeowner information label.

Control (W8150A):

• Power Supply: 20-30 Vac, 60 Hz.
• Power Consumption: 3.5 VA at 24 Vac.
• Thermostat Fan Load: 10 mA resistive at 24 Vac.
• Thermostat Heat Load: 10 mA resistive at 24 Vac.
• Remote Terminals: 10 mA resistive at 24 Vac.

Relay Contacts:

1. Fan: 1.5A full load, 7.5A locked rotor at 24 Vac.
2. Damper: 0.6A inductive, 3.1A locked rotor at 24 Vac.
3. Auxiliary: 0.5A inductive, 2.5A locked rotor at 24 Vac.

Damper (EARD6): 24 Vac, 12 VA, 60 Hz.

• Operation: Power-open, spring-closed.
• Diameter: 6 in.

Transformer (AT120):

• Input: 120 VAC.
• Output: 27 Vac open circuit, 24 Vac full load at 20 VA.
• Mounting: Foot mounted.

Temperature: -20 °F to 160 °F (-29 °C to 71 °C).

Humidity: 5 to 90% RH, noncondensing.

Input Setting Ranges:

• Bedrooms: 2-5.
• Area: 1000-4600 sq ft.
• Vent Airflow: 40-160 cfm.

Composite Setting Resolution: +/- 12% of ASHRAE 62.2-2010, recommended ventilation for single-system setup.

AT120B Approvals: UL Component Recognized: Class 2, File No. 14881.

Location: The Device can be installed in an unconditioned space. Multiple devices can be installed when operating multiple HVAC systems.

W8150 QUICK GUIDE

INSTALLATION

A fresh air duct and damper must be installed between the outdoors and the return side of the HVAC equipment. The W8150 control will be mounted near the HVAC system and wired between the thermostat and the fan control.

You will need…

• W8150 Fresh Air Ventilation Control.
• damper.
• transformer.
• insulated ductwork.
• outdoor weather hood.
• starting collar.
• access to 120 Vac power.
• airflow measuring tool.

TIPS:

• To meet ASHRAE 62.2-2010, the system must have at least a MERV 6 filter installed.
• In cold climates, balanced ventilation is recommended. An exhaust fan or heat recovery ventilator can be used.
• Humid climates may require additional dehumidification equipment.

Choosing a location…

When choosing locations for equipment, duct connections, and fresh air intake, be sure to consult local code requirements.

Installing fresh air damper, ducting, and control…

1. Disconnect power from the HVAC system.
2. Install the weather hood, ducting, and damper following local practices. Be sure all duct and insulation seams are tightly sealed.
3. Mount the transformer and control.

TIPS:

• In general, larger ducting allows higher airflow, minimizes additional fan run time, and may be needed for larger homes.
• Installing a damper directly to the return duct may be convenient to support the damper and reduce ducting.
• Fresh air connection should be downstream of sensors (such as a humidistat) in the return air plenum.
• The EARD6 end stops can be used to reduce the amount of airflow in the duct. To prevent complete opening, loosen (but do not remove) the wing nut and move the upper lever until the desired position is reached. Tighten the wing nut. Keep the lower lever in the position shown.

Wiring the control…

CAUTION

Electrical Hazard.

Can cause personal injury or equipment damage. Disconnect power to all systems before beginning installation.

1. Wire the control. See wiring diagrams in Fig. 1-10 as listed below. All wiring must comply with local codes, ordinances, and regulations.
2. Reapply power to the system and control.

TIP:

The control package allows wire routing through side slots and bottom openings.

Measuring airflow…

• Make sure all HVAC system air filters are clean and installed.
• Push the Test button:

1. Control opens the damper and turns on the HVAC fan for three minutes.
2. A red or green light is flashing; you can now measure airflow.

• Follow the instrument instructions for measuring airflow.

TIPS:

• You can exit the test mode at any time by pressing the test button again.
• See Conversion Table (located after wiring diagrams) for quick area and airflow setting conversions.
• For future reference, record the air flow on the inside of the device cover.
• Pitot Tubes and flow measuring stations are commonly used airflow measuring devices.

About the control settings…

Dial Settings

These settings allow the installer to customize the control to meet the ventilation requirements for the home.

Ventilation Standard

Building codes are different everywhere. The W8150 Ventilation Control can be configured to operate based on:

• ASHRAE 62.2.
• ASHRAE 62-1999

TIP:

A clear understanding of local codes and practices is required to make sure the ventilation system is installed and configured correctly. Generally, ASHRAE 62.2 controls the method is recommended and can meet many existing local codes.

Ventilation Limit

This setting determines the maximum amount of time that the fan runs for ventilation.

Setting the control…

1. Be sure the power is turned on.
2. Set the Ventilation Standard on the control.
3. Set the bedroom dial.
4. Set the area (sq ft) dial.
5. Set the airflow (cfm) dial.
6. Press the test button and observe the lights: The Green light is flashing. The dial settings meet the chosen standard. Red light is flashing. There is not enough fresh air delivered to meet the requirements of the selected standard. See Troubleshooting section.
7. Record settings on the label inside the cover.

TIPS:

• Ventilation control reads the new dial setting only when the test button is pushed or power is cycled. To ensure dial settings are read, push the test button after any changes are made.
• For single-bedroom homes, set the bedrooms dial to 2 (this may result in more ventilation than the minimum required).
• For homes having more than five bedrooms and only a single ventilation system, set the bedrooms dial to 5 (this may result in less ventilation than the minimum required).
• For conditioned square feet, set the area (sq ft) dial to the nearest value.
• For airflow, set the airflow (cfm) dial to the nearest value.
• Vaulted ceilings do not need to be considered when setting this control.
• For homes with multiple systems, Honeywell recommends a ventilation control and fresh air intake for each system. Measure ventilation airflow for each system independently. Refer to the Multi-system Setup Example for further details.

CHECKOUT

In this section, make sure the ventilation system is operating correctly.

• On the thermostat, set the Fan switch to Auto and the System switch to Off.
• Set any remote switches throughout the house in the Off position.
• On the W8150, set the control switch to Off (remote only).
• Press the Test button for two seconds to enter test mode:

1. A light on the control begins flashing.
2. The HVAC system fan comes on.
3. The damper moves to the Open position.

•  Press the Test button again to exit test mode:

1. No lights on the control are on.
2. The HVAC system fan turns off.
3. The damper returns to the closed position.

• Return the thermostat, ventilation control, and remote switches to the original settings.
• Refer to the Troubleshooting section if needed.

TIP:

W8150 Ventilation Control automatically exits test mode after three minutes.

TROUBLESHOOTING

Multi-System Setup Example

Total square feet and bedrooms should be proportionately split between the ventilation controls based on square feet served by each system, regardless of where the bedrooms are located.

Example: 5,000 sq ft, six bedrooms:

System 1:

• serves 3200 sq ft,
• two bedrooms.
• Fresh air intake measured at 127 cfm.

System 2:

• serves 1800 sq ft,
• four bedrooms
• Fresh air intake measured at 98 cfm.

Set W8150 for System 1:

• 3100 sq ft,
• four bedrooms
• 130 cfm.

Set W8150 for System 2:

• 1900 sq ft,
• two bedrooms

Automation and Control Solutions

Honeywell International Inc.

1985 Douglas Drive North

Golden Valley, MN 55422

Honeywell Limited-Honeywell Limitée

35 Dynamic Drive

Toronto, Ontario M1V 4Z9

customer.honeywell.com

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Honeywell W8150 Fresh Air Ventilation Control-FAQs