Zephyr MUA008A, MUA006A, MUA010A, ZSAE30DB, ZLCE42BS, COKE36BBMX, ZSLE42BS, ZSLE42AS, ZRVM90BBSGG, ZRVE30BGG, ZNAE42CS, ZANE30CS, ZANM90CBS User Manual

www.zephyronline.com

Universal Make-Up Air Damper

Use, Care, and Installation Guide

MUA006A

MUA008A

MUA010A

OCT13.0201 © Zephyr Corporation

MODELS MUA006A • MUA008A • MUA010A
AUTOMATIC MAKE-UP AIR DAMPER WITH	Page 2
TRANSFORMER & PRESSURE SWITCH

READ AND SAVE THESE INSTRUCTIONS

FOR RESIDENTIAL USE ONLY

WARNING

TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO PERSONS, OBSERVE THE FOLLOWING:

1.Installation work and electrical wiring must be done by a qualified person(s) in accordance with all applicable codes and standards, including fire-rated construction codes and standards.

2.This unit is not designed to provide combustion air for fuelburning appliances.

3.Do not connect the unit directly to a combustion appliance of any type.

4.Sufficient air is needed for proper combustion and exhausting of gases through the flue (chimney) of fuel burning equipment to prevent backdrafting. Follow the heating equipment manufacturer’s guideline and safety standards such as those published by the National Fire Protection Association (NFPA),

and the American Society for Heating, Refrigeration and Air Conditioning Engineers (ASHRAE), and the local code authorities.

5.Before servicing or cleaning unit, switch power off at service panel and lock the service disconnecting means to prevent power from being switched on accidentally. When the service disconnecting means cannot be locked, securely fasten a prominent warning device, such as a tag, to the service panel.

6.When performing installation, servicing or cleaning the unit, it is recommended to wear safety glasses and gloves.

7.During extreme weather events including snow storms, ensure that the intake area for the outside air duct is not blocked and able to provide a clear pathway for outside air to enter the system.

8.When cutting or drilling into wall or ceiling, do not damage electrical wiring or other hidden utilities.

9.When notching or drilling into framing including floor supports, rim joists, and wall studs, comply with code and manufacturer limitations on allowable modifications to these structural members.

10.This unit is intended to be installed within the home in a location protected from moisture.

11.This unit must be in an accessible location which allows for inspection of the unit.

12.Use this unit only in the manner intended by the manufacturer. If you have questions, contact the manufacturer at the address or telephone number listed in this document.

13.When federal, provincial or state legislation comprises more restrictive installation and/or certification requirements, the aforementioned requirements prevail on those of this document and the installer agrees to conform to these at his own expense.

CAUTION

1.Do not locate outside air inlet near hazardous materials or explosives.

2.Unit shall not be installed to introduce air from crawlspaces, garages, attics, adjacent dwelling units, or other locations within the building shell. Unit shall be installed to introduce air directly from outdoors.

3.Do not run the outside air duct directly above or closer than 2 ft to any furnace or its supply plenum, boiler, or other heat producing appliance.

4.Any ductwork used in conjunction with the Damper must be installed in compliance with all local and national codes that are applicable.

5.Do not operate the Damper for fresh air introduction until all system filters, including the central duct system filter, have been installed per the system design.

6.Please read the unit specification label on the product for further information and requirements.

7.The Damper’s outdoor air intake, ducting, and any filters should be inspected and maintained on a regular basis.

8.Insulate the duct and damper to prevent build-up of condensation in cold weather climates. Vapor barriers on both sides of insulation are recommended.

WARRANTY

ZEPHYR ONE YEAR LIMITED WARRANTY

ZEPHYR warrants to the original consumer purchaser of its products that such products will be free from defects in materials or workmanship for a period of one year from the date of original purchase. THERE ARE NO OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

During this one-year period, ZEPHYR will, at its option, repair or replace, without charge, any product or part which is found to be defective under normal use and service.

THIS WARRANTY DOES NOT EXTEND TO FLUORESCENT LAMP STARTERS, TUBES, HALOGEN AND INCANDESCENT BULBS, FUSES, FILTERS, DUCTS, ROOF CAPS, WALL CAPS AND OTHER ACCESSORIES FOR DUCTING. This warranty does not cover (a) normal maintenance and service or (b) any products or parts which have been subject to misuse, negligence, accident, improper maintenance or repair (other than by ZEPHYR), faulty installation or installation contrary to recommended installation instructions.

The duration of any implied warranty is limited to the one-year period as specified for the express warranty. Some states do not allow limitation on how long an implied warranty lasts, so the above limitation may not apply to you.

ZEPHYR’S OBLIGATION TO REPAIR OR REPLACE, AT ZEPHYR’S OPTION, SHALL BE THE PURCHASER’S SOLE AND EXCLUSIVE REMEDY UNDER THIS WARRANTY. ZEPHYR SHALL NOT BE LIABLE FOR INCIDENTAL, CONSEQUENTIAL OR SPECIAL DAMAGES ARISING OUT OF OR IN CONNECTION WITH PRODUCT USE OR PERFORMANCE. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you.

This warranty gives you specific legal rights, and you may also have other rights, which vary from state to state. This warranty supersedes all prior warranties.

To qualify for warranty service, you must (a) notify ZEPHYR at the address or telephone number below, (b) give the model number and part identification and (c) describe the nature of any defect in the product or part. At the time of requesting warranty service, you must present evidence of the original purchase date.

Zephyr Ventilation, 2277 Harbor Bay Parkway, Alameda, CA 94502 www.zephyronline.com 888-880-8368

MODELS MUA006A • MUA008A • MUA010A

PLAN THE INSTALLATION

Planning the installation first requires selecting the most appropriate installation approach. The chart below offers suggestions for the most effective installation approach by considering a few important factors. Further details on the two main types of installations are provided below.

	• House has central duct work?	No
Yes
	• Return-air side of duct work is
	accessible-either the return-air trunk	No
Yes	or returnair plenum?

Damper connected to	Damper ducted directly
return side of central	to a ceiling, floor, or wall
duct system	register

OUTSIDE AIR INTAKE LOCATION

Proper design and location of the outside air intake location is critical in ensuring that the Damper can safely and reliably provide an opening for fresh air to enter the home. The following requirements for the location of the outside air intake must be met:

•Outside air intake is located a minimum of 10’from combustion appliance vents, chimneys, plumbing stacks, and bathroom or kitchen exhaust vents. If local codes have more stringent separation requirements, they shall apply.

•Outside air intake is placed high enough above grade to prevent blockage from snow or other debris such as leaves, and at a minimum of 1’ above grade.

•Make-up air damper should not draw air from crawlspaces, garages, attics, adjacent dwelling units, or any enclosed part of the building. The Damper should be installed to draw air directly from outdoors.

OUTSIDE AIR INTAKE OPENING PROTECTION

Because the Damper, together with the end cap and outside air duct which are installed with it, will allow outdoor air into the indoor environment, it is important to meet the following requirements:

•ModelAK00030(6”),AK00032(8”)andAK00052(10”)freshairinlet wall caps include protective bird screens to keep out animals and outside debris. Clean screens often and do not remove.

•If a protective bird screen other than the screen provided is used, it must cover the entire opening of the outside air duct. This screen must also have openings of at least ¼”but no larger than ½”.

•The outdoor air intake opening should meet local code provisions for the protection of openings in exterior walls, including steps to prevent moisture intrusion around the opening.

Note that the screen over the outside air opening is not a filter. It is intended to prevent the intake of leaves, animals, or debris into the outside air duct. A downstream filter is necessary to remove pollen, dust, and other airborne particles. Potential filter locations are shown below in the Typical Installations section.

Page 3

MINIMUM RETURN AIR TEMPERATURE REQUIREMENTS

HVAC equipment manufacturers may have minimum requirements for the air temperature in the return air plenum. Introducing outdoor air to the return side of the central duct system may impact this temperature. The installer should adjust both the size of the outside air duct and the location of its connection to the return side of the central duct system in a manner so that minimum air temperature requirements are satisfied under design conditions.

WHAT IS INCLUDED IN THE PACKAGE

-Motorized Damper

-Transformer

-Pressure Switch Kit which includes:

-Pressure Switch

-Probe

-12”PVC tubing 1/4”I.D.

-Gasket

-(6) Sheet Metal Screws

TOOLS REQUIRED

-1/4” Socket Drive

-Flathead or Phillips Screw Driver

-3/8” Drill Bit

-Duct Tape

-Low Voltage Wire (2 Conductor)

-(2) 1/4” Female Spade Terminals

-Wire Nuts

MODELS MUA006A • MUA008A • MUA010A

Page 4

TYPICAL INSTALLATIONS

Installations will vary according to the location in the home where the unit is installed and which model Damper is used. Use the following illustrations and notes as guidance for your own installation. Always comply with local code requirements and in any instance where a detail shown below conflicts with local code, the local code provision shall apply.

CENTRAL SYSTEM SUPPLY AIR

THERMOSTAT

AIR DISTRIBUTION FAN

AIR HANDLER UNIT

EXTERIOR WALL

CENTRAL SYSTEM RETURN AIR

INSULATED OUTSIDE

AIR DUCT (slope toward wall cap)

FRESH AIR INLET WALL CAP WITH BIRD SCREEN

VENTILATION AIR INTAKE

(locate away from pollutant sources)

FIELD MEASUREMENT OF AVAILABLE STATIC PRESSURE. (See “Install The Damper” section on page 5 for damper balancing instructions.)

AUTO. MAKE-UP AIR DAMPER

REGISTER BOX ADAPTED

WITH SLIDE-IN FILTER (optional)

CENTRAL DUCT SYSTEM FILTER

Damper connected to return side of central duct system.

INTERIOR WALL

WALL

REGISTER

EXTERIOR WALL

INSULATED OUTSIDE

AIR DUCT (slope toward wall cap)

WALL CAP WITH

BIRD SCREEN

VENTILATION AIR INTAKE

(locate away from pollutant sources)

MOTORIZED DAMPER

REGISTER BOX ADAPTED

WITH SLIDE-IN FILTER (optional)

Damper and outside air duct connected directly to a ceiling, floor, or wall register.

MODELS MUA006A • MUA008A • MUA010A

INSTALL THE DAMPER

TO CENTRAL SYSTEM			SET SCREW
RETURN AIR OR INTERIOR
WALL REGISTER			OUTSIDE AIR

AIR FLOW

AIR FLOW

DAMPER FLAP (Install in

vertical position shown.)

Install the damper as shown.Make sure damper flap is in a vertical position when closed and power is off. The set screw can be used to adjust the damper opening - thereby balancing the inside and outside air pressure when the range hood exhausts at high speed.

PRESSURE SWITCH

OPERATION

The pressure switch is designed to operate when the static pressure increases to 0.05” Ps or more.It may not operate at low speeds since the pressure is below this limit.

MULTIPLE DAMPERS

More than one damper may be required to balance the system. If more than one is required use (1) MUA006A, MUA008A, or MUA010A and then use the 54060012 (6”), 54060013 (8”), or 54060014 (10”) dampers as additional dampers.

Page 5

INSTALLATION OF PRESSURE SWITCH AND PROBE

For the probe & pressure switch to work effectively the roof or wall cap must have a spring loaded damper.

MODELS MUA006A • MUA008A • MUA010A

Page 6

LOCATION OF PROBE AND PRESSURE SWITCH

The probe must be mounted between the range hood damper and the wall cap, roof cap, in-line blower or external blower.

Mount the probe as close to the hood outlet as possible but make sure the hood damper operation is not affected.

ROOF CAP

w/DAMPER

	IN-LINE	EXHAUST
	DAMPER
		DUCT
	HOOD	PRESSURE
		SWITCH
	FLUE
		PROBE
		RANGE
		HOOD

TYPICAL INSTALLATION WITH

INTERNAL BLOWER AND ROOF VENT

WALL CAP w/DAMPER

	IN-LINE	EXHAUST
		DUCT
	DAMPER
	HOOD	PRESSURE
	FLUE	SWITCH
		PROBE
		RANGE
		HOOD

TYPICAL INSTALLATION WITH

INTERNAL BLOWER AND WALL VENT

KITCHEN
CABINET	TUBING
PRESSURE	PROBE
SWITCH
	WALL CAP
	w/DAMPER
	RANGE
	HOOD

The pressure switch should be mounted so it is accessible for any future service. The switch can mounted no more then 72” away from the probe. If longer tubing is required then what is supplied, purchase 1/4” I.D.PVC tubing from a local source.See the illustrations below for possible installation scenarios.

ROOF CAP w/DAMPER

INLINE

BLOWER

		EXHAUST
		DUCT
	HOOD	PRESSURE
	FLUE
		SWITCH

PROBE

RANGE

HOOD

TYPICAL INSTALLATION WITH INLINE BLOWER

EXTERIOR

BLOWER

		EXHAUST
		DUCT
	HOOD	PRESSURE
	FLUE
		SWITCH
		PROBE
		RANGE
		HOOD
		TYPICAL INSTALLATION
		WITH EXTERIOR BLOWER

TYPICAL INSTALLATION WITH INTERNAL BLOWER AND HORIZONTAL DUCTING w/ WALL VENT