Boiler Manual - Weil-McLain

More documents

Recommendations

Info

GV90+ gas-fired water boiler — Boiler ManualDIRECT VENT — Sidewall with 3” concentric (continued)Install termination — concentric pipes1. Assemble the vent termination as described for concentric terminations,on page 47.If necessary, you can shorten the lengths of the inner andouter pipes for a shorter finished assembly. But you mustensure the pipes butt correctly at both ends. Failure toproperly assemble the concentric termination can resultin flue gas recirculation, causing possible severe personalinjury or death.2. Wall penetration:a. Preferably, use a thimble with a 4½-inch hole. If not using athimble, carefully use a hole saw to cut a hole not larger than4¾ inches in diameter through the wall. The finished holemust provide a solid stop for the rain cap ribs, as shown in theinset to Figure 52.3. Secure the termination in place so the rain cap will butt against theoutside wall or outer thimble plate as shown in Figure 52, page 42.4. Before beginning vent and air piping from the boiler to the concentrictermination, mount and secure the concentric terminationas shown in Figure 52, page 42.The vent and air piping must be securely supported, andmust not rest its weight on the boiler fittings. Failure toproperly support the vent and air piping could result invent piping damage, resulting in possible severe personalinjury, death or substantial property damage.Figure 51 Termination location — concentrictermination — multiple boilers —clearance from vent of one to air intake ofthe nextFigure 52 Installing and supporting the concentricsidewall vent assemblyThe supports/bracing used must support the terminationassembly to prevent slippage or movement.The clamps used on the outside of the termination pipemust not cut into the pipe or contain sharp edges thatcould cause a crack to form.When inserting the partially-assembled terminationkit through the wall penetration, wrap plastic or otherprotection over the end of the exposed assembly to preventdebris from entering the pipes. If the air passagesbecome blocked, the boiler will not operate. Once therain cap has been cemented to the assembly, there is noway to correct the problem. The assembly would haveto be replaced if it were cut to be removed and cleaned.Altering the assembly in any way could result in severepersonal injury or death due to toxic flue product emissions.When using AL294C stainless vent pipe, use the ventpipe manufacturer’s PVC adapter when connecting tothe concentric vent attachment.5. After the assembly has been positioned in the opening and all supportshave been attached, install a bird screen (purchased separatelyif not included with the kit) and rain cap as follows:a. Place the bird screen on the end of the inner pipe as in Figure58, page 47.b. Cement the rain cap in place as shown.Ensure that the wall material is strongenough to prevent the rain cap from beingpushed inward if struck or pushed from theoutside.42Part number 550-142-054/1211
GV90+ gas-fired water boiler — Boiler ManualDIRECT VENT — Vertical with separate pipesAllowable vent/air pipe materials &lengthsFigure 53 Separate pipes vertical terminationUse only the vent materials and kits listedin Figure 40, page 33. Provide pipe adaptersif specified.1. Locate the terminations such that the total air pipingand vent piping from the boiler to the terminationwill not exceed the maximum length given inFigure 39, page 32.Determine termination location1. The air and vent terminations must be installed asshown in Figure 53, page 43.2. The terminations must comply with clearances andlimitations shown in Figure 41, page 35.3. Locate the terminations so they are not likely to bedamaged by foreign objects, such as stones or balls,or subject to buildup of leaves or sediment.Multiple vent/air terminations (Figure 54)1. When terminating multiple GV90+ boilers, terminateeach vent/air connection as described inthis section.Terminate all vent pipes at the sameheight and all air pipes at the same heightto avoid possibility of severe personalinjury, death or substantial propertydamage.2. Place roof penetrations to obtain minimum clearanceof 12 inches between edge of air intake elbowand adjacent vent pipe of another boiler for U. S.installations (see Figure 54, page 44). For Canadianinstallations, provide clearances required by CSAB149.1 or B149.2 Installation Code.3. The air inlet of a GV90+ boiler is part of a directvent connection. It is not classified as a forced airintake with regard to spacing from adjacent boilervents.Prepare roof penetrations1. Air pipe penetration:a. Cut a hole for the air pipe. Size the air pipehole as close as desired to the air pipe outsidediameter.2. Vent pipe penetration:a. Cut a hole for the vent pipe. For either combustibleor noncombustible construction, size thevent pipe hole at least 0.4” larger than the ventpipe diameter (4” hole for 3” PVC).b. Insert a galvanized metal thimble in the ventpipe hole.Step 1 Read and follow all instructions in this manual. DO NOT proceedwith vent/air installation until you have read page 29through page 35.Step 2 Install the boiler in a location that allows proper routing of all ventand air piping to the selected sidewall location.Step 3 Make sure the selected vertical termination location complies withFigure 41, page 35. (Multiple boiler terminations must also complywith Figure 54, page 44.)Step 4 Use only the vent materials listed in Figure 40, page 33. Provide pipeadapters where required. Vent piping and air piping lengths must notexceed the values shown in Figure 39, page 32.Step 5 Prepare the vertical penetrations and secure penetration componentsas instructed in this section. See “Prepare roof penetrations” on page 43and “Termination and fittings” on page 44.Step 6 The air piping must terminate in a 180-degree return bend or downturnedelbow as shown above. The vent piping must terminate in acoupling pointed upward as shown above.Step 7 Install vent and air piping between the boiler and the vertical terminations.Slope horizontal piping downward toward the boiler at least 1/4inch per foot. Install pipe supports every 5 feet on both the horizontaland vertical runs. Install a hanger support within 6 inches of any upturnin the piping. See page 48 for general guidelines.Step 8 Insert the vent and air piping through the vertical penetrations andsecure the termination fittings.Step 9 Maintain clearances shown above. Vent and air terminations must befitted with a bird screen as shown.Part number 550-142-054/1211 43
Page 1 and 2: ®Gas-Fired Water BoilersBoiler Man
Page 3 and 4: GV90+ gas-fired water boiler — Bo
Page 17: GV90+ gas-fired water boiler — Bo
Page 93 and 94:
GV90+ gas-fired water boiler — Bo
Page 95 and 96:
Page 97 and 98:
Page 99 and 100:
Page 101 and 102:
Page 103 and 104:
Page 105 and 106:
Page 107 and 108:
show all

Boiler Manual - Weil-McLain

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?