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Weil-McLain 383-500-350 Supplement Manual Download Page 12

Vent Supplement

This document must only be used by a qualified heating installer/service
technician. Read all instructions, including this Supplement and the Boiler
Manual, before installing. Perform steps in the order given. Failure to comply
could result in severe personal injury, death or substantial property damage.

Installation must comply with local requirements and with the National Fuel
Gas Code, ANSI Z223.1 for U.S. installations or CSA B149.1 or B149.2 for
Canadian installations.

Part No. 550-141-967/1003

Gas-fired

water boiler

Concentric vent/air system:
Through-roof termination

(Weil-McLain kit part number 383-500-350)

[All piping (air and vent) must be PVC only]

Addendum

Table 2

Min/max lengths of either air piping or vent piping

This Addendum replaces table 2, page 11 in the “Ultra Vent Supplement”
(Part number 550-141-965/0703).

Summary of Contents for 383-500-350

Page 1: ...mply could result in severe personal injury death or substantial property damage Installation must comply with local requirements and with the National Fuel Gas Code ANSI Z223 1 for U S installations or CSA B149 1 or B149 2 for Canadian installations Part No 550 141 965 0703 Gas fired water boiler with Concentric vent air system Through roof termination Weil McLain kit part number 383 500 350 All ...

Page 2: ...ge Contents Hazard definitions The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or to important information concerning the life of the product Indicates presence of hazards that will cause severe personal injury death or substantial property damage Indicates presence of hazards that can cause severe personal injury dea...

Page 3: ...nal injury death or substantial property damage Installation must comply with local requirements and with the National Fuel Gas Code ANSI Z223 1 for U S installations or CSA B149 1 or B149 2 for Canadian installations Vent and air piping materials DO NOT attempt to modify kit components DO NOT extend or cut the inner or outer PVC pipe sections provided with the kit Install the kit as supplied with...

Page 4: ...Insofar as is practical close all building doors and windows and all doors between the space in which the appliances remaining connected to the common venting system are located and other spaces of the building Turn on clothes dryers and any appliance not connected to the common venting system Turn on any exhaust fans such as range hoods and bathroom exhausts so they will operate at maximum speed ...

Page 5: ...age or boiler water leakage into the building Please read the information given in Table 1 listing contaminants and areas likely to contain them If contaminating chemicals will be present near the location of the boiler combustion air inlet have your installer pipe the boiler combustion air and vent to another location per the Boiler Manual and Vent Supplement If the boiler combustion air inlet is...

Page 6: ... Vent outlet must be located At least 6 feet from adjacent walls No closer than 5 feet below roof overhang At least 7 feet above any public walkway At lease 3 feet above any forced air intake within 10 feet Nocloserthan12inchesbeloworhorizontallyfrom any door or window or any other gravity air inlet Followinstructionsbelowwhendeterminingventlocation to avoid possibility of severe personal injury d...

Page 7: ...3 For Canadian installations provide clearances required by CSA B149 1 or B149 2 Installation Code 3 The air inlet of an Ultra boiler is part of a direct vent connection It is not classified as a forced air intake with regard to spacing from adjacent boiler vents Vent termination support 1 Do not alter any component of the concentric vent air termination assembly Assemble and install all component...

Page 8: ... the following procedures to prepare termination components and cement together 4 Deburr inside and outside of pipe ends 5 Chamfer outside of each pipe end to ensure even cementdistributionwhenjoining 6 Clean all pipe ends and fittings Dry thoroughly 7 Dry assemble entire vent or air piping to ensure proper fit before assembling any joint 8 For each joint a Handle fittings and pipes carefully to p...

Page 9: ...ssembly DO NOT alter vent components DO NOT attach the rain cap until the termination has been inserted through the roof and all supports have been installed Do not cut or alter any concentric vent termination component And ensure all joints are secure and completelysealed Failuretocomplycouldresultinseverepersonalinjury deathorsubstantialproperty damage ...

Page 10: ... of each pipe end to ensure even cement distribution when joining 5 Clean all pipe ends and fittings Dry thoroughly 6 Dry assemble entire vent or air piping to ensure proper fit before assembling any joint 7 For each joint a Handle fittings and pipes carefully to prevent contamination of surfaces b Apply primer liberally to both joint surfaces pipe end and fitting socket c While primer is still da...

Page 11: ...ch piping use long radius elbows to reduce pressure drop This allows a longer run of piping See Table 2 notes for details Donotinsulateventpiping Exception Whereventpipes pass through unheated spaces such as crawl spaces or unheated garages apply inch fiberglass insulation to the portion of the vent pipe in the unheated space only Figure 9a Alternate piping arrangement using 3 45 street ells for c...

Page 12: ...Installation must comply with local requirements and with the National Fuel Gas Code ANSI Z223 1 for U S installations or CSA B149 1 or B149 2 for Canadian installations Part No 550 141 967 1003 Gas fired water boiler Concentric vent air system Through roof termination Weil McLain kit part number 383 500 350 All piping air and vent must be PVC only Addendum Table 2 Min max lengths of either air pi...

Page 13: ...12 Part Number 550 141 965 0703 GAS FIRED WATER BOILER Vent Supplement ...

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