Installation guide

ManualsBrandsViessmann ManualsBoilerWB2B

Venting System

Installation Instructions

for use by heating contractor

Venting System

for Vitodens 100-W WB1B Series

and Vitodens 200-W WB2B Series



Vitodens 100-W, WB1B and

Vitodens 200-W WB2B Series

(with preinstalled coaxial vent pipe adaptor)

Read and save these instructions

for future reference.

IMPORTANT

Please file in Service Binder

5368 815 v2.0 b 08/2009

 This trademark is registered with the U.S. Patent and Trademark Office.

Summary of content (88 pages)

PAGE 1
Installation Instructions  for use by heating contractor Venting System Please file in Service Binder for Vitodens 100-W WB1B Series and Vitodens 200-W WB2B Series Venting System Vitodens 100-W, WB1B and Vitodens 200-W WB2B Series (with preinstalled coaxial vent pipe adaptor) IMPORTANT Read and save these instructions for future reference. 5368 815 v2.0 b 08/2009  This trademark is registered with the U.S. Patent and Trademark Office.
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Safety, Installation and Warranty Requirements Safety, Installation and Warranty Requirements Please ensure that these instructions are read and understood before commencing installation. Failure to comply with the instructions listed below and details printed in this manual can cause product/property damage, severe personal injury, and/or loss of life. Ensure all requirements below are understood and fulfilled (including detailed information found in manual subsections).
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Index Page Safety Important Regulatory and Installation Requirements General Information About these Installation Instructions Side Wall Vent Installation (Coaxial) ........................... 6 .......................................................... 7 General Installation Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installation steps (outline) . . . . . . . . . . . . . . . . . . . . . . .
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Index Page Direct Venting (Two-pipe System) Direct Venting Options (Two-pipe System) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Exhaust Vent/Air Intake Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Combustion air supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Index Page Single Wall Venting (Room Air Dependent) Venting - Single Wall (Room Air Dependent) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 Vent Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 Combustion air supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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General Information About these Installation Instructions Take note of all symbols and notations intended to draw attention to potential hazards or important product information. These include ”WARNING”, ”CAUTION”, and ”IMPORTANT”. See below. WARNING Indicates an imminently hazardous situation which, if not avoided, could result in death, serious injury or substantial product/property damage.
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Safety Important Regulatory and Installation Requirements For installations in the Commonwealth of Massachusetts, the following local requirements apply in addition to all other applicable NFPA requirements: 1) For direct-vent appliances, mechanical-vent heating appliances or domestic hot water equipment, where the bottom of the vent terminal and the air intake is installed below four feet above grade the following requirements must be satisfied. 1.
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Safety Important Regulatory and Installation Requirements When replacing parts, use original Viessmann or Viessmann approved replacement parts. For coaxial venting systems only: Venting material to be supplied by Viessmann only. The venting system must be installed by a licensed professional heating contractor familiar with the operation and maintenance of heating appliances and venting. Before installing this product, ensure that the complete installation literature has been read.
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Safety Important Regulatory and Installation Requirements (continued) Table 1. Clearance to combustibles Top Front Rear Left Right Vent pipe 0”/mm 0”/mm 0”/mm 0”/mm 0”/mm 0”/mm Table 2. Recommended minimum service clearance Top Front Rear Left Right 12”/305 mm 28”/711 mm 0”/mm 6”/152 mm 0”/mm For details refer to Vitodens 100-W and 200-W Installation Instructions (as may be applicable).
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General Information General Installation Information Installation steps (outline) WARNING Ensure that the entire venting system is protected from physical damages. A damaged venting system may cause unsafe conditions. WARNING The venting system is approved for indoor installations only. Do not install the venting system outdoors.
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General Information General Installation Information (continued) Recommended venting practice When installing a venting system the following recommended venting practices apply: H Keep length and number of 90º elbows to a minimum. Exception: A masonry chimney flue may be used to route the venting system only if no other appliance is vented in the same flue. H Try not to use back-to-back 90º elbows.
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General Information General Installation Information (continued) Boiler vent connections Boiler models Vitodens 100-W WB1B 10-26/30 and Vitodens 200-W WB2B 9-19/26/35 A B A B A Coaxial vent pipe system (see Fig. 2 and 3) A Combustion air B Flue gas For double-pipe installations, the combustion air inlet cover must be in place. Fig. 1 Single- or double-pipe installation (see Fig.
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Side Wall Vent Installation (Coaxial) Side Wall Venting Layouts (Coaxial) Layout with basic coaxial vent kit componentry 3 1 4 6 5 7 2 For 80, 105 models only. Transition 110/150>100/150 Max. wall thickness 19.6” / 500 mm 1 Vent pipe adaptor 2 Transition adaptor for 80/105 models 110/150 > 100/150 3 Elbow, 87° (1 per carton) Fig. 4 Standard side wall venting layout, using basic vent kit components for vent systems 60/100, 80/125 and 100/150. 4 Straight pipe 3.3 ft.
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Side Wall Vent Installation (Coaxial) Side Wall Venting Layouts (Coaxial) (continued) Layout with basic coaxial vent kit componentry (continued) 3 2 1 Transition adaptor used only for 80 and 105 models Fig. 5 Side wall venting layout, using basic vent kit components for vent systems 60/100, 80/125 and 100/150 1 Mounting clip (c/w 4” screw) 2 Brass adaptor (supplied) 3 All-threaded rod (field supplied) 5368 815 v2.
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Side Wall Vent Installation (Coaxial) Side Wall Venting Layouts (Coaxial) (continued) Layout with basic coaxial vent kit and accessory componentry 7 8 9 6 2 3 4 5 1 Fig. 6 Side wall venting layout, using basic vent components and accessory parts for vent system 60/100, 80/125 and 100/150 Straight pipe *2 3.3 ft./1 m long or 1.6 ft./0.5 m long For Vitodens WB2B boiler models 80/105 a transition adaptor is required (see page 36).
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Side Wall Vent Installation (Coaxial) Component Installation Guide Offset installation (e.g. for offset venting systems) (2 × 45º elbow) Minimum offset of approx. 4”/100 mm: Slide two 45º elbows together and connect to coaxial vent-air intake system. (vent system 80/125) Minimum offset of approx. 5”/120 mm: Slide two 45º elbows together and connect to coaxial vent-air intake system.
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Side Wall Vent Installation (Coaxial) Component Installation Guide (continued) Coaxial vent telescopic extension installation (sliding coupling) The telescopic extension is used where minor cutting or adjustment to the length of the vent pipe is required. See dimension “g” in table below. Fig. 7 Coaxial vent telescopic extension f e g c Øa Øb d c Øa 5368 815 v2.0 b Øb Boiler model a in / mm b in / mm c in / mm d in / mm e in / mm f (max.
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Side Wall Vent Installation (Coaxial) Component Installation Guide (continued) Coaxial vent termination installation 1 3 Table 7. Wall opening information 2 Opening Ø Vent system 60/100 4¼”/108 mm 80/125 5¼“/133 mm 100/150 63/8”/160 mm Side wall vent termination installation 1. Provide side wall opening (see table above) to install vent termination. b Fig.
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Side Wall Vent Installation (Coaxial) Component Installation Guide (continued) Coaxial vent termination installation (continued) (fig. 11) 6. Secure protective screen into place, using the four stainless steel screws and plugs provided. a c IMPORTANT The protective screen MUST be installed. b Fig. 10 7. Connect vent termination from inside and route toward boiler with min. 3º downward slope.
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Side Wall Vent Installation (Coaxial) Component Installation Guide (continued) Vent termination location requirements (for installations in Canada) The vent must be installed observing local regulations in addition to National Codes, CAN/CSA-B149.1 or 2. A vent must NOT terminate... 1. ....directly above a paved sidewalk or paved driveway which is located between two single-family dwellings and serves both dwellings. 2. ....less than 7 ft./2.
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Side Wall Vent Installation (Coaxial) Component Installation Guide (continued) Vent termination location requirements (for installations in the U.S.A.) The vent must be installed observing local regulations in addition to National Codes, ANSI-Z223.1 or NFPA 54. A vent must NOT terminate... 1. ....less than 7 ft./2.13 m above a paved sidewalk or a paved driveway located on public property. 2. ....within 4 ft./1.
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Side Wall Vent Installation (Coaxial) Vent Length Requirements Maximum vent length Table 8. Table 9. Standard sizes of boiler flue gas adaptors Boiler model Boiler model WB1B 10-26 WB1B 10-35 Adaptor size 60/100 WB2B 9-19 WB2B 9-26 WB2B 9-35 60/100 WB2B 17-45 WB2B 17-60 80/125 WB2B 30-80 WB2B 30-105 100/150 Vent system 60/100 WB1B 10-26 WB1B 10-35 80/125 82 ft / 25m (see Fig. 15) WB2B 9-19 WB2B 9-26 33 ft / 10m WB2B 9-35 26 ft / 8m WB2B 17-45 WB2B 17-60 98 ft / (see Fig.
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Side Wall Vent Installation (Coaxial) Vent Length Requirements (continued) Maximum vent length with increasers a Vent length “a” Coaxial increaser for systems 60/100 to 100/150, 60/100 to 80/125 and 80/125 to 100/150 Vitodens 100-W, WB1B and Vitodens 200-W, WB2B Fig. 15 Vitodens 100-W WB1B and 200-W WB2B boilers with increasers Minimum vent length The minimum equivalent vent length for all models is 19”/483 mm (length of the vent termination when cut to the minimum permissible length).
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Vertical Vent Installation (Coaxial) Vertical Venting Layouts (Coaxial) Layout of vertical vent system with accessories Please note that there is no basic vent kit available for this vertical vent system. Select from the vertical vent components below as required. Do not exceed maximum equivalent vent length. Vent pipe adaptor Elbow, 87° (1 per carton) Telescopic extension 7 Straight pipe 3.3 ft./1 m or 1.6 ft./0.
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Vertical Vent Installation (Coaxial) Vertical Venting Layouts (Coaxial) (continued) General installation examples Fig. 17 Sloped roof installation Fig. 18 Flat roof installation Fig. 19 Sloped roof installation with offset 5368 815 v2.0 b IMPORTANT Ensure that the venting system is properly supported; the Vitodens 100-W and Vitodens 200-W boilers are not designed to support the weight of the venting system.
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Vertical Vent Installation (Coaxial) Component Installation Guide Offset installation (e.g. for offset venting systems) (2 × 45º elbow) Minimum offset of approx. 4”/100 mm: Slide two 45º elbows together and connect to coaxial vent-air intake system. (vent system 80/125) Minimum offset of approx. 5”/120 mm: Slide two 45º elbows together and connect to coaxial vent-air intake system.
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Vertical Vent Installation (Coaxial) Component Installation Guide (continued) Coaxial vent telescopic extension installation The telescopic extension is used where minor cutting or adjustment to the length of the vent pipe is required. See dimension “g” in table below. Fig. 20 Coaxial vent telescopic extension f e g c Øa Øb d c Øa Øb a in / mm b in / mm c in / mm d in / mm e in / mm f in / mm g in / mm WB1B 26, 35 WB2B 9-19; 9-26, 9-35 2.4 / 60 4 / 100 0.4 / 10 7.9 / 200 9.6 / 245 1.
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Vertical Vent Installation (Coaxial) Component Installation Guide (continued) Coaxial vent termination installation B Combust air intake Flu gas outlet B Table 14. Ceiling opening information d A Opening Ø Vent system 60/100 4¼”/108 mm 80/125 5¼“/133 mm 100/150 63/8”/160 mm A Vertical vent termination installation f IMPORTANT g The vertical vent termination must not be shortened outside the roof, otherwise the overall length will be shorter than required. e 1.
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Vertical Vent Installation (Coaxial) Component Installation Guide (continued) Flashing and storm collar installation Flashings and storm collars are field supplied. Flashings and storm collars suitable for Type B vent materials (or better) may be used. To obtain flashings and storm collars, please contact your local vent material supplier. Follow the installation instructions supplied by the manufacturer.
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Vertical Vent Installation (Coaxial) Installation of Support System The venting system must be securely supported by a support system suitable for the weight and design of the materials employed. Contact your vent material supplier for more information specific to your installation. Supports Fig. 25 Supports are used to transfer the weight of an installation to the building structure. There are different types of supports and their capacity varies with each type and diameter.
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Vertical Vent Installation (Coaxial) Vent Length Requirements Maximum vent length Table 16. Boiler model WB1B WB2B 10-26 9-19 10-35 9-26 WB2B WB2B WB2B WB2B 9-35 17-45 17-60 30-80 30-105 a (max. length) a 60/100 vent system ft./m 82/25 80/125 vent system ft./m 100/150 vent system ft./m 30/9 23/7 --- --- --- --- --- --- --- --- 33/10 20/6 --- --- ----43/13 Do not exceed the maximum vent length. See page 32 for increased diameter equivalent vent pipe system (see table 17 and 18).
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Vertical Vent Installation (Coaxial) Vent Length Requirements (continued) Maximum vent length with increasers Table 17. Maximum vent length for vertical installations (Vitodens 100-W) WB1B 10-26, 10-35 Model No. System vent size Max. vent length “a” *1 *2 a Vent length “a” ft. m 80/125 *1 100/150 *2 98 30 118 36 If used with increasers 60/100 to 80/125. If used with increasers 60/100 to 100/150 Table 18. Maximum vent length for vertical installations (Vitodens 200-W) Model No.
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Vertical Vent Installation (Coaxial) Vent Length Requirements (continued) Equivalent vent calculation examples Table 19. Type of fitting 87º elbow/ 87º inspection tee 45º elbow Equivalent length 1.6 ft./0.5 m 1 ft./0.3 m IMPORTANT Always include vent termination length in calculations. C C Equivalent vent length calculation example *1 Vitodens 100-W, WB1B 10-35 and Vitodens 200-W, WB2B 9-35 (vent system 60/100) (Fig. 29) F E Fig.
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Componentry Component Parts of the Venting System Straight pipe (0.5 m) (can be cut to length if required) Table 21. Vent system size a Dimensions [in./mm] b c 2.4/60 4/100 1.6/50 19.7“ / 500 mm 60/100 c 80/125 Øa 100/150 3/80 5/125 1.6/50 4/100 6/150 1.6/50 a Dimensions [in./mm] b c 2.4/60 4/100 1.6/50 3/80 5/125 1.6/50 4/100 6/150 1.6/50 Øb IMPORTANT When cutting straight pipes to length, debur and clean pipes.
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Componentry Component Parts of the Venting System Table 24. Elbow (45°) (2 per carton) e (continued) Vent system size d a b Dimensions [in./mm] c d e 60/100 2.4/60 4/100 1.6/40 1.2/30 2.4/60 80/125 3/80 5/125 1.8/45 1.2/30 2.5/63 4.3/110 6/100 3.8/97 1.2/30 5/128 100/150 c Øa Øb Increaser Table 25. Vent system size Øf Øe c Dimensions [in./mm] c d a b e f 60/100 2.4/60 4/100 2/50 5/125 4/100 6/150 80/125 3.1/80 5/125 2/50 4.3/110 4/100 6/150 100/150 2.
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Componentry Component Parts of the Venting System (continued) Horizontal vent termination Total length of vent termination pipe is 31”/787 mm. If required, the vent termination pipe may be shortened by max. 12”/305 mm (min. vent termination length is 19”/483 mm). Øa Øb IMPORTANT c front view, not to scale d Table 28. Vent system size Dimensions [in./mm] b c a 60/100 80/125 100/150 d 2.4/60 4/100 23.6/600 27.8/705 3/80 5/125 23.6/600 29/735 4/100 6/150 23.6/600 30.
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Componentry Component Parts of the Venting System Wall band for installation on inside wall or ceiling (c/w vertical vent termination) Vertical vent termination B (continued) B Mounting clip, white for installation on inside wall or ceiling a b d a A Table 31. A f Vent system size Combust air intake Flu gas outlet g Table 30. Vent system size e Dimensions [in./mm] a b 60/100 4/100 4/100 8.5/215 8.5/215 80/125 4.3/110 8.5/215 6/150 8.5/215 100/150 Dimensions [in.
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Componentry Component Parts of the Venting System (continued) Basic vent kit components (Side Wall Vent System only) For replacement purposes or project-specific requirements, individual parts can be ordered from Viessmann. Refer to the table for an outline of basic vent kit componentry that can be ordered separately. Basic components Vent pipe adaptor (comes pre-installed on all models) Elbow, 87º Straight pipe, 3.3 ft.
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Componentry Component Parts of the Venting System (continued) Vent accessories For project-specific requirements, individual accessory parts can be ordered from Viessmann. Refer to the table for an outline of accessory parts available. Accessory components Straight pipe, 1.6 ft./0.
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Direct Venting (Two-pipe System) Direct Venting Options (Two-pipe System) Boiler models Vitodens 100-W WB1B 10-26/30 and Vitodens 200-W WB2B 9-19/26/35 A B AB A For double-pipe installation, the combustion air inlet cover must be in place. Fig. 31 Single or double pipe installation A Combustion air (requires 2” CPVC adaptor) B Flue gas (requires 2” CPVC adaptor) Remove and discard combustion air inlet cover when installing coaxial vent pipe system. Fig.
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Exhaust Vent/Air Intake Requirements Combustion air supply The Vitodens boiler is suitable for sidewall, as well as vertical venting using field supplied venting material. The Vitodens 100-W and 200-W boilers are approved for both direct vent (sealed combustion), as well as direct exhaust (non-sealed combustion) operation in both horizontal and vertical arrangements. For non-sealed combustion vent systems (i.e.
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Direct Venting (Two-pipe System) Exhaust Vent/Air Intake Requirements (continued) General requirements The Vitodens 100-W and 200-W boilers must be located in such a way that the vent length is as short as possible and that the vent can be routed as directly (and with as few bends) as possible. The minimum equivalent vent length is 4 ft. / 1.2 m. See tables NO TAG, 40. and 41. for maximum and minimum vent lengths. All products of combustion must be safely vented to the outdoors.
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Direct Venting (Two-pipe System) General Installation Information Installation steps (outline) Exhaust and combustion air piping material Use only the materials listed in table 32. entitled “Approved materials for two-pipe system” on page 44 for exhaust, combustion air intake pipe and fittings. H Cut the pipe end square and remove all burrs and debris from joints and fittings.
PAGE 44
Direct Venting (Two-pipe System) General Installation Information (continued) Installation steps (outline) (continued) Table 32. Approved materials for two-pipe system Exhaust pipe and fitting Stainless steel CPVC Combustion air pipe and fitting Pipe cement, primer (for combustion air intake pipe) Pipe cement, primer (for exhaust pipe and fitting) Applicability UL1738 “Venting systems for gas-burning appliances, Categories II, III, IV” U.S.A.
PAGE 45
Direct Venting (Two-pipe System) General Installation Information (continued) Vent termination location requirements (for installations in Canada) The vent must be installed observing local regulations in addition to National Codes, CAN/CSA-B149.1 or 2. A vent must NOT terminate... 1. ....directly above a paved sidewalk or paved driveway which is located between two single-family dwellings and serves both dwellings. 2. ....less than 7 ft./2.
PAGE 46
Direct Venting (Two-pipe System) General Installation Information (continued) Vent termination location requirements (for installations in the U.S.A.) The vent must be installed observing local regulations in addition to National Codes, ANSI-Z223.1 or NFPA 54. A vent must NOT terminate... 1. ....less than 7 ft./2.13 m above a paved sidewalk or a paved driveway located on public property. 2. ....within 4 ft./1.
PAGE 47
Direct Venting (Two-pipe System) Vent Requirements - Stainless Steel Additional requirements for stainless steel vent pipe material Use an AL29-4C® special stainless steel venting system (UL/ULC listed for category IV) for horizontal or vertical venting of the Vitodens boilers. See tables 35 and 36, and contact one of the suppliers (see listing on right) to order. Prior to installation, check that the correct single-wall vent parts were ordered and supplied.
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Direct Venting (Two-pipe System) Vent Requirements - Stainless Steel (continued) Additional requirements for stainless steel vent pipe material (continued) Viessmann coaxial increaser and 2” air intake CPVC adaptor must be ordered, (see table 33. for part number). Minimum pipe diameter available for exhaust stainless steel pipe is 3”. The air intake pipe of the increaser must be removed and discarded (See Fig. 34). The air inlet (intake) cover must stay in place. Table 33. Coaxial increaser (min.
PAGE 49
Direct Venting (Two-pipe System) Vent Requirements - Stainless Steel (continued) Additional requirements for stainless steel vent pipe material (continued) Table 34. Parallel adaptor for two-pipe system Supplier Boiler Model Viessmann HWB2B 17-45, 17-60 Ø inches/mm Qty. 3 / 80 1 (see fig. 36) HWB2B 30-80, 30-105 4 / 100 1 (see fig. 37) Parallel vent pipe starter adaptors for WB2B 17-45, 17-60 Parallel vent pipe starter adaptors for WB2B 30-80, 30-105 e a a a b c Legend 5368 815 v2.
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Direct Venting (Two-pipe System) Vent Requirements - Stainless Steel (continued) Additional requirements for stainless steel vent pipe material (continued) Table 35. Exhaust vent termination options (vertical installation) Supplier Boiler Model Flexmaster H WB1B WB2B H WB2B H WB2B 10-26. 10-35 9-19/26/35 17-45, 17-60 30-80, 30-105 3” 2SVSVB03 3” 2SVST03 3” 4” 2SVSVB03 2SVSVB04 3” 4” 2SVST03 2SVST04 H WB1B WB2B H WB2B H WB2B 10-26.
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Direct Venting (Two-pipe System) Component Parts of the Venting System Termination Coupling with Screen Termination Elbow with Screen 90° or 45° Fig. 38 Termination Tee with Screen Fig. 40 Fig. 39 Termination Hood with Screen 5368 815 v2.0 b Fig.
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Direct Venting (Two-pipe System) Vent Requirements - CPVC Additional requirements for UL/ULC-listed CPVC vent pipe material Use UL/ULC-listed special plastic pipe (CPVC) for horizontal (side wall) or vertical (roof) venting of the Vitodens boilers. See table 38. below and contact Viessmann to order. Prior to installation, check that the correct single-wall vent parts were ordered and supplied. See table 38. for special starter adaptor and bird screen models required for your installation.
PAGE 53
Direct Venting (Two-pipe System) Vent Pipe Starter Adaptors Parallel vent pipe starter adaptors for WB1B 10-26, 10-35 / WB2B 9-19/26/35 WARNING B Air inlet (intake) cover must stay in place. DO NOT remove! A Flue Optional left connection for air intake (For this type of installation only:) Boiler comes with pre-installed combustion air cover mounted on the concentric vent pipe adaptor. Do not remove combustion air intake cover.
PAGE 54
Direct Venting (Two-pipe System) Vent Pipe Starter Adaptors Parallel vent pipe starter adaptors for WB2B 17-45, 17-60 Flue Parallel vent pipe starter adaptors for WB2B 30-80, 30-105 Air Flue e a Air e a a a d d c c b Fig. 44 Legend Fig. 45 Legend a b c d e Air intake, max. insertion 2½” / 64mm (use sheet metal screws to hold in place) Viessmann parallel adaptor CPVC slip joint starter adaptor 4” / 100mm 51/8” / 130mm 93/8” / 237mm approx.12” / 305mm 5½” / 140mm 5368 815 v2.
PAGE 55
Direct Venting (Two-pipe System) Side Wall Vent Termination (stainless steel or CPVC) If less than 10” required (see (D) in fig. 47) ((D)= min.12”) IMPORTANT The exhaust vent/air intake system must terminate so that proper clearances are maintained as cited in local codes or the latest edition of the “Natural Gas and Propane Installation Code” CAN/CSA-B149.1 (Canada), or the “National Fuel Gas Code” ANSI Z223.1 (NFPA 54) (U.S.A.). See pages min. 12” 20 and 21. (see also Vent Riser fig. 48) 10” min.
PAGE 56
Direct Venting (Two-pipe System) Vent Length Requirements Maximum vent/air intake pipe length - horizontal IMPORTANT Always include vent termination length in calculations. The total equivalent length specified for a two pipe system is the total combined length of the exhaust vent and air intake pipe system. Do not exceed these maximum lengths. See table 39 and fig. 49 and 50 for reference. Table 39. Maximum allowable equivalent length - horizontal System Ø See note below Max.
PAGE 57
Direct Venting (Two-pipe System) Vent Length Requirements (continued) Maximum vent/air intake pipe length - horizontal (continued) Side Wall Caulk here (exterior caulking) a Field Supplied Exhaust/Air Intake Pipe and Fittings Starter Adaptor Flue b Parallel Adaptor Boiler Adaptor Air Vitodens Fig.
PAGE 58
Direct Venting (Two-pipe System) Vent Length Requirements (continued) Maximum vent/air intake pipe length - vertical (continued) Note: For combination of different vent/air intake pipe diameters, such as Ø 3” stainless steel vent with Ø 2” (CVPC, PVC, ABS) air intake pipe, the total equivalent length must be used for the smaller pipe diameter. Maximum of five 90° elbows allowed in the entire vent and air intake system (see fig. 55). Minimum vent length is 3.3 ft. / 1m.
PAGE 59
Direct Venting (Two-pipe System) Vent Length Requirements (continued) Maximum vent/air intake pipe length - horizontal/vertical (hybrid system) The total equivalent length specified for a two pipe system is the total combined length of the exhaust vent and air intake pipe system. Do not exceed these maximum lenghts. See table 41, as well as fig 49 and 50 for reference. Table 41. Maximum allowable equivalent length - vertical exhaust / horizontal air intake (hybrid) System Ø See note below Max.
PAGE 60
Direct Venting (Two-pipe System) Vent Length Requirements (continued) Maximum vent/air intake pipe length - horizontal/vertical (hybrid system) (continued) Legend Flue c a b c Support system Flashings Exhaust (straight coupling) with screen Combustion air intake with screen Equivalent length (exhaust) Equivalent length (air intake) min. 18” / max. 48” a b Air Fig.
PAGE 61
Direct Venting (Two-pipe System) Vent Length Requirements Maximum equivalent vent length - stainless steel system with plastic air intake pipe Table 43. (see also fig. 55) Vent type Type of fitting Exhaust vent pipe Air intake pipe IMPORTANT Always include vent termination length in calculations. Equivalent length ft. / m 90° elbow (stainless steel) 3 / 0.91 45° elbow (stainless steel) 2 / 0.61 90° elbow (ABS/PVC) 5 / 1.52 45° elbow (ABS/PVC) 3 / 0.
PAGE 62
Direct Venting (Two-pipe System) Vent Length Requirements Maximum equivalent vent length - CPVC system Table 44. (see also fig. 55) Type of fitting Equivalent length ft. / m 90° long sweep elbow (CPVC) 5 / 1.52 45° long sweep elbow (CPVC) 3 / 0.91 Equivalent vent length calculation example (Vitodens WB1B or WB2B system diameter 2”) Maximum allowable equivalent length is 86 ft. / 31 m (see table 39 and fig. 49 on page 56) 2 x 90º elbow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PAGE 63
Direct Venting (Two-pipe System) Vent Length Requirements (continued) Maximum equivalent vent length - CPVC system (continued) Side Wall Support System Support System a Exhaust/Air Intake Pipe and FittingsField Supplied Starter Adaptor Caulk here (exterior caulking) Flue b Parallel Adaptor Boiler Adaptor Vitodens Air Fig. 57 Vitodens 200-W WB2B 17-45, 17-60, 30-80, 30-105 5368 815 v2.
PAGE 64
Single Wall Venting (Room Air Dependent) Venting - Single Wall (Room Air Dependent) Remove and discard air inlet cover if using annular air gap. C WB2B 17-45/60, 30-80/105 Models AB C C C Combustion air opening A Room/Combustion air B Exhaust C Room combustion air inlets This system draws combustion air from the boiler room. Room/Combustion air enters the boiler at the boiler vent pipe adaptor through an annular air gap.
PAGE 65
Single Wall Venting (Room Air Dependent) Vent Requirements (continued) Combustion air supply (continued) Inspect all finished exhaust vent/air intake piping to ensure: H Vent pipe and fittings are of approved material. H Acceptable size, length and number of elbows on combined vent pipe system. H Installation is in accordance with prevailing provisions of local codes. H Installation complies with the requirements of these instructions, as well as the exhaust vent supplier’s instructions.
PAGE 66
Single Wall Venting (Room Air Dependent) General Installation Information (continued) Installation steps (outline) Exhaust vent pipe material Use only the materials listed in table 45. for exhaust vent pipe fittings. H Cut the pipe end square and remove all burrs and debris from joints and fittings. H If using CPVC special vent material for exhaust vent pipe, all joints must be properly cleaned, primed and cemented. Use only cement and primer approved for the use with the pipe material.
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Single Wall Venting (Room Air Dependent) General Installation Information (continued) Approved materials for single-wall vent system Table 45. Approved materials for single-wall vent system Material Part Exhaust pipe and fitting Stainless steel CPVC Pipe cement, primer (for combustion air intake pipe only) Pipe cement, primer (for exhaust pipe and fitting) Certified to Standards Applicability UL1738 “Venting systems for gas-burning appliances, Categories II, III, IV” U.S.A.
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Single Wall Venting (Room Air Dependent) General Installation Information (continued) Vent termination location requirements (for installations in Canada) The vent must be installed observing local regulations in addition to National Codes, CAN/CSA-B149.1 or 2. A vent must NOT terminate... 1. ....directly above a paved sidewalk or paved driveway which is located between two single-family dwellings and serves both dwellings. 2. ....less than 7 ft./2.
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Single Wall Venting (Room Air Dependent) General Installation Information (continued) Vent termination location requirements (for installations in the U.S.A.) The vent must be installed observing local regulations in addition to National Codes, ANSI-Z223.1 or NFPA 54. A vent must NOT terminate... 1. ....less than 7 ft./2.13 m above a paved sidewalk or a paved driveway located on public property. 2. ....within 4 ft./1.
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Single Wall Venting (Room Air Dependent) General Installation Information (continued) Support system Use supports to transfer the weight of an installation to the building structure. There are different types of supports available and their capacity varies with each type and diameter. The following support types are available at your local vent material supplier... H anchor plate H wall support H roof support H floor support H suspension band (hanger).
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Single Wall Venting (Room Air Dependent) General Installation Information (continued) Additional requirements for stainless steel vent pipe material Use an AL29-4C® special stainless steel venting system (UL/ULC listed for category IV) for horizontal or vertical venting of the Vitodens boilers. See tables 46. and 47. and contact one of the suppliers (see listing on right) to order. Prior to installation, check that the correct single-wall vent parts were ordered and supplied. See tables 46. and 47.
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General Installation Information (continued) Additional requirements for stainless steel vent pipe material (continued) Table 46.
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Single Wall Venting (Room Air Dependent) General Installation Information (continued) Additional requirements for stainless steel vent pipe material (continued) Table 48. Coaxial increaser (min. stainless steel pipe diameter is 3” / 76mm) The coaxial increaser is required for the following boiler models. Supplier Boiler Model Ø inches mm Qty. Viessmann H WB1B 10-29, 10-35 WB2B 8.
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Single Wall Venting (Room Air Dependent) General Installation Information (continued) Additional requirements for stainless steel vent pipe material (continued) Starter adaptor for WB2B 17-45,17-60, 30-80, 30-105 Flue Combustion air a a 6.5” / 165 mm Fig. 60 Legend Boiler adaptor Stainless steel starter adaptor (max.
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Single Wall Venting (Room Air Dependent) General Installation Information (continued) Additional requirements for CPVC vent pipe material Use UL/ULC-listed special plastic pipe (CPVC) for horizontal (side wall) or vertical (roof) venting of the Vitodens boilers. See table 49 below and contact Viessmann to order. Prior to installation, check that the correct single-wall vent parts have been ordered and supplied.
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Single Wall Venting (Room Air Dependent) Side Wall Vent Termination min. 12” (see also Vent Riser fig. 70) Exhaust vent terminal, 45° or 90° Fig. 68 Grade or Snow Level Side wall vent termination (front view) min. 6” Flue Fig. 69 Side wall vent termination (side view) Support Bracket Side Wall Attach Termination Elbow w/ Screen Vent Max. 36” Riser Min. 12” Grade or max snow level Fig. 70 Installation of field supplied vent riser 76 5368 815 v2.
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Single Wall Venting (Room Air Dependent) Vent Length Requirements Maximum vent pipe length - horizontal Size the exhaust vent pipe as specified in the table 50 This table lists the maximum allowable vent length in feet and meters of the exhaust piping. Vent diameter must not be reduced at any point in the installation. Table 50. Maximum allowable equivalent length - horizontal System Ø Max. equivalent vent length “a” *3 HWB1B 10-26, 10-35 2” / 51mm *1 3” / 76mm 4” / 102mm *2 86ft. / 31m 164ft.
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Single Wall Venting (Room Air Dependent) Vent Length Requirements (continued) Maximum vent pipe length - vertical Size the exhaust vent pipe as specified in table 51 This table lists the maximum allowable vent length in feet and meters of the exhaust piping. Vent diameter must not be reduced at any point in the installation. Table 51. Maximum allowable equivalent length - vertical System Ø Max. equivalent vent length “a” *3 HWB1B 10-26, 10-35 2” / 51mm *1 3” / 76mm 4” / 102mm *2 86ft. / 31m 164ft.
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Single Wall Venting (Room Air Dependent) Vent Length Requirements Standard long sweep elbows (for CPVC pipes only) For plastic pipe only 90° short sweep elbow equivalent to 8 ft. / 2.4m (if used) 90° long sweep elbow equivalent to 5 ft. / 1.5m Fig. 73 Note: If standard sweep elbows are used the allowable vent lengths are reduced. One standard 90° elbow is equivalent to 8ft. / 2.4m of straight pipe. Table 52. Standard long sweep elbows 90° equivalent length elbow ft. / m 45° equivalent length elbow ft.
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Single Wall Venting (Room Air Dependent) Component Installation Guide Coaxial vent pipe adaptor (comes pre-installed on Vitodens 100-W, WB1B 10-26, 10-35 Vent pipe starter adaptor Elbow, 90° Straight pipe *1 Elbow, 45° Suspension band / hanger Wall band Vent termination coupling (w bird screen) Flashing and storm collar *1 Available in different lengths. For more detailed information on component parts see product literature supplied by special venting manufacturer.
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Single Wall Venting (Room Air Dependent) Component Installation Guide (continued) Single-wall vent pipe starter adaptor installation WARNING 1 2 Prior to installation, ensure the specially designed single-wall vent pipe adaptor end is smooth and chamfered to prevent possible damage to the sealing gasket of the boiler vent pipe adaptor (coaxial). Failure to comply could result in leakage, potentially causing personal injury or death. 1.
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Single Wall Venting (Room Air Dependent) Component Installation Guide (continued) Flashing and storm collar installation Flashings and storm collars are field supplied. Flashings and storm collars suitable for Type B vent materials (or better) may be used. To obtain flashings and storm collars, please contact your local vent material supplier. Follow the installation instructions supplied by the special venting manufacturer.
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Single Wall Venting (Room Air Dependent) Component Installation Guide (continued) Single-wall vent termination installation Install the vent termination coupling, along with the bird screen, for sloped or flat roof collars in accordance with the manufacturer’s instructions. General installation examples - vertical 5368 815 v2.0 b Fig.80 Sloped roof installation Fig.81 Flat roof installation Fig.
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Single Wall Venting (Room Air Dependent) Component Installation Guide (continued) Equivalent vent length calculation example - vertical Equivalent vent length calculation example (stainless steel system) Vitodens 100-W, WB1B 10-26, 10-35 2 x 90º elbow . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 ft./1.8 2 x 45º elbow . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 ft./1.2 3 x vent pipe (0.5 m) . . . . . . . . 4.9 ft./1.5 2 x vent pipe (1 m) . . . . . . . . . . . . . . . . 6.6 ft.
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Printed on environmentally friendly (recycled and recyclable) paper. 88 Viessmann Manufacturing Company Inc. 750 McMurray Road Waterloo, Ontario • N2V 2G5 • Canada 1-800-387-7373 • Fax (519) 885-0887 www.viessmann.ca • info@viessmann.ca 5368 815 v2.0 bTechnical information subject to change without notice. Viessmann Manufacturing Company (U.S.) Inc. 45 Access Road Warwick, Rhode Island • 02886 • USA 1-800-288-0667 • Fax (401) 732-0590 www.viessmann-us.com • info@viessmann-us.