Dacor DHW361 Guia Da Instalação

Recirculating Configuration

Recirculating kits AVDH1 and AVDH2 contain the parts 

necessary to convert a DHW series hood to a recircu-

lating configuration in instances where exhausting the 

hood outside the building is not practical or desired. The 

kit consists of a top cap and charcoal filter(s). When 

installed, the top cap redirects air flow out the vents in the 

sides of the hood chimney assembly. The provided char-

coal filter(s) is/are installed underneath the mesh type 

filter(s) included with the hood. The charcoal filter reduces 

smoke and fumes before the hood exhaust is vented into 

the room. Use kit AVDH1 for models DHW301, DHW361 

and DHW421. Use kit AVDI2 for model DHW482.

Ducted Installation - Planning 

and Installing the Duct Work

•  To prevent combustion by-products, smoke or odors 

from entering the home and to improve efficiency, 

tape all duct joints securely.

•  Use only duct work deemed acceptable by state, 

municipal and local codes.

• 

DO NOT install an additional in-line or external 

blower to increase the length of the duct run. Even 

small differences between blower air flow rates can 

greatly reduce the air draw of the hood.

To reduce the risk of fire and to properly exhaust air, be 

sure to duct air outside the house or building. Do not 

vent exhaust air into spaces within walls or ceilings or 

into attics, crawl spaces or garages.

Installation Specifications

 

■ All duct work materials (including screws and duct 

tape) must be purchased separately by the customer. 

 

■ When planning new 

duct work, always 

look for the shortest, 

most direct route to 

the outside. Venting 

can be done through 

the roof or directly 

through the back 

wall to the outside as 

shown.

 

■ Local building codes 

may require the use 

of makeup air systems with ventilation systems that 

move air greater than the specified movement rate 

(CFM). The specified rate varies based on locale. 

Consult a qualified HVAC specialist when designing 

the system for the requirements in your area and to 

assure optimal performance.

 

■ The hood exhaust connects to an 8-inch round duct. 

You can increase the duct size over the duct run if 

desired. To prevent a back draft, never decrease the 

duct size over the run. If existing duct work is smaller 

than 8 inches in diameter, remove it and replace it 

with 8-inch duct work.

 

■ Do not rely on tape alone to seal duct joints. Fasten 

all connections with sheet metal screws and tape all 

joints with certified silver tape or duct tape. Use sheet 

metal screws as required to support the duct weight.

 

■ To prevent back-drafts, a damper at the duct outlet 

may  also be required.

 

■ Make sure duct work does not interfere with floor 

joists  or wall studs.

Calculating the Maximum Duct Run Length

The maximum straight duct length for the hood is 50 feet. 

To determine the actual maximum duct run, subtract the 

equivalent length of each elbow, transition and cap from 

50 feet.

8” 90° elbow

7 feet

10” 90° elbow

5 feet

8” 45° elbow

3 feet

10” 45° elbow

2 feet

3¼” X 10”

to round 90° 

transition

25 feet

3¼” X 10” to

8”/10” round 

transition

4 feet

Roof cap

*

Wall cap with 

damper

*

* The equivalent lengths of roof and wall caps vary with 

model and configuration. For equivalent length, contact 

the manufacturer or a qualified HVAC specialist.

Chimney

Top cap

Duct inside

chimney between

hood and top cap 

(not provided)