Best MD8TU Handleiding

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1
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. Validated performance testing certified for use with BEST, Broan, and Broan Elite
range hoods.
3. This unit is not designed to provide combustion air for fuel-burning appliances.
4. Do not connect the unit directly to a combustion appliance of any type.
5. 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.
6. 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.
7. When performing installation, servicing or cleaning the unit, it is recommended to
wear safety glasses and gloves.
8. 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.
9. When cutting or drilling into wall or ceiling, do not damage electrical wiring or other
hidden utilities.
10. 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.
11. This unit is intended to be installed within the home in a location protected from
moisture.
12. This unit must be in an accessible location which allows for inspection of the unit.
13. 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.
14. 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.
AUTOMATIC MAKE-UP AIR DAMPER WITH
TRANSFORMER & PRESSURE SWITCH
READ AND SAVE THESE INSTRUCTIONS
!
FOR RESIDENTIAL USE ONLY
!
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.
PLAN THE INSTALLATION
Planning the installation first requires selecting the most appropriate installation ap-
proach. 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 instal-
lations are provided below.
Yes
•House has central duct work?
Yes
•Return-air side of duct work is
accessible -either the return-air trunk
or return- air plenum?
Damper connected to
return side of central
duct system
No
No
Damper ducted directly
to a ceiling, floor, or wall
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, adja-
cent 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:
• Model 641FA (6”) and 643FA (8”) fresh air inlet 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.
Minimum Return Air Temperature Requirements
HVAC equipment manufacturers may have minimum requirements for the air tempera-
ture 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
MD6TU • MD8TU • MD10TU
Register this product at www.broan.com/register. For Warranty Statement, or to order
Service Parts: go to www.broan.com and type the Model in the “Model Search” field
at the top of the page.
Broan, 926 W. State Street, Hartford, WI 53027 800-637-1453
2
Damper and outside air duct connected directly to a ceiling, floor, or wall register.
INTERIOR WALL
WALL
REGISTER
REGISTER BOX ADAPTED
WITH SLIDE-IN FILTER (optional)
MOTORIZED DAMPER
WALL CAP WITH
BIRD SCREEN
INSULATED OUTSIDE
AIR DUCT (slope toward wall cap)
EXTERIOR WALL
VENTILATION AIR INTAKE
(locate away from pollutant sources)
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.
Damper connected to return side of central duct system.
AIR HANDLER UNIT
AIR DISTRIBUTION FAN
THERMOSTAT
CENTRAL SYSTEM SUPPLY AIR
REGISTER BOX ADAPTED
WITH SLIDE-IN FILTER (optional)
AUTO. MAKE-UP AIR DAMPER
FIELD MEASUREMENT OF AVAILABLE
STATIC PRESSURE. (See “Install The
Damper” section on page 3 for damper
balancing instructions.)
FRESH AIR INLET WALL CAP
WITH BIRD SCREEN
INSULATED OUTSIDE
AIR DUCT (slope toward wall cap)
EXTERIOR WALL
VENTILATION AIR INTAKE
(locate away from pollutant sources)
CENTRAL SYSTEM RETURN AIR
CENTRAL DUCT SYSTEM FILTER
INSTALL THE DAMPER
OUTSIDE AIR
TO CENTRAL SYSTEM
RETURN AIR OR INTERIOR
WALL REGISTER
DAMPER FLAP (Install in
vertical position shown.)
AIR FLOW AIR FLOW
SET SCREW
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) MD6TU or MD8TU and then use the MD6 or MD8 dampers as ad-
ditional dampers.
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. The following Broan products are recommended:
TYPICAL INSTALLATION WITH
INTERNAL BLOWER AND ROOF VENT
RANGE
HOOD
PROBE
EXHAUST
DUCT
ROOF CAP
w/DAMPER
PRESSURE
SWITCH
HOOD
FLUE
IN-LINE
DAMPER
TYPICAL INSTALLATION WITH
INTERNAL BLOWER AND WALL VENT
RANGE
HOOD
PROBE
EXHAUST
DUCT
PRESSURE
SWITCH
HOOD
FLUE
WALL CAP
w/DAMPER
IN-LINE
DAMPER
TYPICAL INSTALLATION WITH
INTERNAL BLOWER AND HORIZONTAL
DUCTING w/ WALL VENT
RANGE
HOOD
WALL CAP
w/DAMPER
PROBE
TUBING
PRESSURE
SWITCH
KITCHEN
CABINET
TYPICAL INSTALLATION WITH INLINE BLOWER
RANGE
HOOD
PROBE
EXHAUST
DUCT
PRESSURE
SWITCH
HOOD
FLUE
ROOF CAP
w/DAMPER
INLINE
BLOWER
TYPICAL INSTALLATION
WITH EXTERIOR BLOWER
RANGE
HOOD
PROBE
EXHAUST
DUCT
PRESSURE
SWITCH
HOOD
FLUE
EXTERIOR
BLOWER
Wall Cap models:
WC638 – For 3¼” x 14” duct
639 / 649 – For 3¼” x 10” duct
647 – For 7” round duct
843BL / 641 – For 6” round duct
643 / 643FA – For 8” round duct
613 – For 12” round duct
441 – For 10” round duct.
Roof Cap models:
437 – High capacity up to
1200 cfm
634 / 644 – For 3¼” x 10” and
up to 8” round
634M – For 6” round
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.
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.
3
MOUNTING POSITIONS OF PROBE &
PRESSURE SWITCH
DUCTWORK
VERTICAL
PRESSURE
SWITCH
TUBING
PROBE
(air flow arrow
pointing in
direction
of air flow)
AIR
FLOW
DUCTWORK
DUCTWORK
HORIZONTAL
PRESSURE
SWITCH
TUBING
PROBE
(air flow arrow
pointing in
direction
of air flow)
AIR
FLOW
DUCTWORK
MOUNT THE PROBE & PRESSURE SWITCH
PRESSURE
SWITCH
TUBING
PROBE
(air flow arrow
pointing in
direction
of air flow)
AIR
FLOW
DUCTWORK
GASKET
SHEET
METAL
SCREWS
Connect tubing
onto outside of
black fitting.
Drill
3/8” HOLE
in ducting
1/4”
SPADE
TERMINALS
Probe opening
pointing down
AIR
FLOW
LOW
VOLTAGE
WIRES
TUBE CONNECTED
TO GREY (-) INLET
PRESSURE SWITCH
SET UP FOR
EXTERNAL &
IN-LINE BLOWERS
1/4”
SPADE
TERMINALS
Probe opening
pointing down
AIR
FLOW
LOW
VOLTAGE
WIRES
TUBE CONNECTED
TO BLACK (+) INLET
PRESSURE SWITCH
SET UP FOR
INTERNAL BLOWERS
WIRE THE SYSTEM
BLACK (LINE)
WHITE (COMMON)
GREEN (GROUND)
MAKE-UP AIR DAMPER
TRANSFORMER
24V
PRESSURE
SWITCH
WIRING DIAGRAM
ONE DAMPER
24V
Wire the system as shown.
TEST THE SYSTEM
Once the damper, pressure switch, and probe is installed. Turn on the range hood to
high speed and confirm that the damper opens. Turn off the hood and check to see if
the damper closes.
A qualified HVAC contractor should also ensure the proper operation and venting of all
combustion equipment in the home.
FALSE TRIPPING
Under certain extreme conditions there could be false tripping of the damper (opening
when the range hood blower is off). If false tripping is encountered, place an in-line
backdraft damper (7” model no. 97, 8” model no. 438, 10” model no. 421) between the
probe and the roof or wall cap.
SERVICE PARTS
97018853 Pressure Switch Kit
97013273 24V Transformer
99527207 6” Motorized Damper
99527208 8” Motorized Damper
99528460 10” Motorized Damper
BLACK (LINE)
WHITE (COMMON)
GREEN (GROUND)
MAKE-UP AIR DAMPER
TRANSFORMER
24V
PRESSURE
SWITCH
WIRING DIAGRAM
MULTIPLE DAMPERS
MAKE-UP AIR DAMPER
24V 24V24V
24V
20V
24V CONTACTS
TRANSFORMER WIRING
WIRE THE SYSTEM (Continued)
Regular maintenance is necessary to ensure the proper operation of the Damper system.
Failure to conduct such routine maintenance can jeopardize the ability of the Damper to
introduce fresh air into the home. Regular maintenance should include the following activi-
ties:
• Clean the outside bird screen to ensure it is free from debris and open to allow fresh air
to enter.
• Clean or replace the interior filter(s) which serve to filter fresh air before it enters the
home.
• Maintain a clear opening at the outdoor end cap, which means preventing the buildup of
snow, leaves, or vegetation at the end cap.
• During regular HVAC maintenance, have the mechanical contractor inspect the Damper
system for proper operation.
MAINTENANCE

Product specificaties

Merk: Best
Categorie: Niet gecategoriseerd
Model: MD8TU

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