Lochinvar 2072, 502 B C D, Venting, Before You Begin, Identify your appliance’s vent system

Installation & Operation Manual

2 Venting

BEFORE YOU BEGIN

Identify your appliance’s vent system:

This manual covers venting requirements for CAT I models and CAT IV vent materials. Be sure to correctly identify the type of vent system your appliance requires before proceeding.

CP (N,L) 0502 CP (N,L) 0652 CP (N,L) 0752 CP (N,L) 0992 CP (N,L) 1262

CP (N,L) 1442 CP (N,L) 1802 CP (N,L) 2072

Venting options:
A	B C D	= B-Vent Material
		CAT I
E	= Direct Vent Options
	CAT IV
F = Outdoor Vent Option

￿DANGER Failurespace. to use correct venting materials can result in loss of life from flue gas spillage into working or living

Venting Category Definitions: (Reference National Fuel Gas Code ANSI Z223.1)

CAT I: Negative pressure non-condensing

An appliance that operates with a non-positive vent static pressure with a vent gas temperature that avoids excessive condensate production in the vent.

CAT IV: Positive pressure condensing

An appliance that operates with a positive vent static pressure with a vent gas temperature that may cause excessive condensate production in the vent.

CAT IV Flue pipe materials

The following manufacturers supply flue materials suitable for these models when installed as CAT IV. All materials are made with AL29-4C stainless steel.

Heat-Fab Inc., Saf-T CI Vent with AL29-4C stainless steel

Protech Systems Inc., Fas N Seal Vent with AL29-4C stainless steel

Metal-Fab Inc., Corr/Guard Vent with AL29-4C stainless steel

Or other listed Category IV vent systems suitable for a condensing, positive pressure, gas fired appliance.

A Category IV flue MUST have all vent joints and seams sealed gastight and have provisions for a drain to properly collect and dispose of condensate that may occur in the venting system.

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