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VENTING
GENERAL INSTRUCTIONS:
The following instructions are intended for use by fully qualified installation or service technicians. Education of the user as
to the importance of venting inspection and annual maintenance by a qualified service technicians should be stressed by
the heating contractor at the earliest practical time.
All Venting shall be in accordance with Part 7, Venting of Equipment, of the National Fuel Gas Code, ANSI Z223.1, or
applicable provisions of the local building codes.
PROPER VENT PIPE INSTALLATION IS CRITICAL TO THE SAFE OPERATION OF THE FURNACE, THEREFORE
CAREFULLY READ AND FOLLOW ALL THE INSTRUCTIONS GIVEN IN THIS SECTION. EACH VENT MUST SERVE
ONLY ONE APPLIANCE. DO NOT CONNECT TO AN EXISTING VENT OR CHIMNEY.
MATERIAL:
This furnace must be vented to the outdoors using 2 inch (3 inch required on the GMN120-5 MODEL) PVC (Polyvinyl chloride)
schedule 40 vent pipe, DWV, or equivilant. Substitutes are permitted only when approved by local codes, and are equal to
or better than PVC. Vent diameter must not be reduced or changed (except on GMN100-4 MODEL), where after 40' of 2"
PVC, any addition in length up to 60' must be 3" PVC. Elbows used to change from a vertical run to a horizontal run should
be type DWV (long radius) to provide the correct slope in horizontal run. If other types are used, then (2) 45 degree elbows
should be used in place of one 90 degree, with elbows slightly misaligned to provide slope in the horizontal runs. Materials
and procedures must conform to American Society for Testing and Materials Standard (ASTM).
Pipe and fittings - ASTM 1785, D2466 & D2665
PVC Primer and Solvent Cement - ASTM D2564
Procedure for Cementing Joints Ref ASTM D2855
INSTALLATION:
Vertical venting is preferred.
ALL HORIZONTAL VENT INSTALLATIONS MUST BE IN ACCORDANCE WITH THESE
INSTRUCTIONS AND ADDITIONAL REQUIREMENTS UNDER SECTION FOR HORIZONTAL VENT.
a.) DO NOT install the vent pipe in the same chase with a vent from another gas or other fuel burning appliance.
Except with another GMN.
b.) DO NOT install vent terminal elbow on vertical vent applications.
c.) DO NOT install the vent pipe within 6 inches from another gas or fuel burning appliance.
d.) DO NOT install the condensate drain trap in any location where freezing inside the trap or drain line can occur.
e.) Drain trap must be easily accessible for checking and cleaning, and must be installed within 4 feet of the furnace.
DO NOT install trap higher than the vent blower outlet. Illustration below, shows the drain trap assembly.
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Содержание GMN SERIES
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