CLEAN BURN CB-1800 Manuel de l'opérateur télécharger pdf (Page 30)

Operator's Manual: Models CB-3500 & CB-5000

3-10

Installing the Energy Retention Disc

Installing the Energy Retention Disc in the Combustion Chamber

ATTENTION: DO NOT re your furnace without the Energy Retention Disc in place, or combustion

chamber damage will occur. Handle the Energy Retention Disc carefully to avoid damage.

1. Refer to Figure 3A to review the proper positioning of the Energy Retention Disc.

2. Swing open the clean-out door on the front of the furnace to gain access to the combustion chamber.

3. Use a long rod to support the Energy Retention Disc as you guide it into position on the back of the

combustion chamber. The loop on the back of the Energy Retention Disc ts over the hook located on

the back of the combustion chamber.

Closing the Furnace Door

1. After the Energy Retention Disc has been installed, close the furnace clean-out door.

2. Tighten the four (4) lock-down nuts in a criss-cross pattern until all are snug.

CENTRAL FURNACE APPLICATIONS: Installing Ductwork

If you plan to install ductwork on your furnace,itismandatorythatqualiedHVACpersonneldesignand

installtheductworksystemtotheCFMandSPspecicationsprovidedinthismanual. Establish correct duct

size according to the following specications and use radial bends or turning vanes to allow for proper air ow.

Sizing the Ductwork:

• For Model CB-3500, the outlet on the air discharge is 20" x 20". The main duct (CB-3500)

must initially maintain an outlet size of 20" x 20".

• For Model CB-5000, the outlet on the air discharge is 24" x 24". The main duct (CB-5000)

must initially maintain an outlet size of 24" x 24".

Additionally, to ensure proper air ow from the furnace and to prevent damage to related furnace components,

adhere to the following guidelines for installing ductwork with your CB-3500 or CB-5000 central furnace

application.

Installation Guidelines for Ductwork:

• It is essential that qualied HVAC personnel properly design the ductwork for your

furnace and determine the static pressure for your ducting application;

ATTENTION: Failure to adhere to the static pressure and CFM specications provided in this

manual may result in damage to the blower motor.

• The ductwork should be installed directly over the opening in the top of the furnace cabinet (i.e.

where the louver assembly would be installed for free air applications.)

• THE ORIFICE PLATE MUST BE REMOVED for all ductwork applications.

• Existing ductwork at your installation site may NOT be appropriate or meet the specications for

your furnace installation.

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CLEAN BURN CB-1800 Manuel de l'opérateur Page 30