Weil-McLain Ultra Manual Addendum
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Weil-McLain Ultra Manual Addendum

Gas-fired water boilers series 3
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See also: Instructions , Installation Manual
Manual addendum - Venting
Supplementary instructions for:
Additional concentric vent/air termination kits, including
IPEX System 636 in 3-inch and 4-inch sizes
(for information on IPEX, go to www.ipexinc.com)
Direct exhaust venting
room/building per this addendum).
Direct vent with Roof exhaust and Sidewall air intake
Contents
Venting & air - general. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Sidewall vent/air termination: 3" or 4" concentric . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Vertical vent/air termination: 3" or 4" concentric . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Concentric vent/air termination assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
DIRECT VENT: Vertical vent / sidewall air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Install vent/air piping - boiler to termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
DIRECT EXHAUST venting - general . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
DIRECT EXHAUST - Boiler room air openings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
DIRECT EXHAUST - Sidewall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
DIRECT EXHAUST - Vertical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
This addendum must only be used by a qualified heating installer/service technician. Read all instructions, including
the Ultra boiler manual and all other information shipped with the boiler, before installing. Perform steps in the order
given. Failure to comply could result in severe personal injury, death or substantial property damage.
Gas-fired water boilers - Series 3
Featuring
(requires combustion air openings to boiler
®
Flexibility
Part number 550-100-103/1110

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  • Page 1: Table Of Contents

    This addendum must only be used by a qualified heating installer/service technician. Read all instructions, including the Ultra boiler manual and all other information shipped with the boiler, before installing. Perform steps in the order given. Failure to comply could result in severe personal injury, death or substantial property damage.

  • Page 2: Venting & Air - General

    The Ultra boiler cannot be common vented with any other appli- will always contain contaminants. ance . When an existing boiler is replaced with an Ultra boiler, the Ultra Contaminated combustion air will damage the boiler, boiler CANNOT use the existing common vent. The Ultra boiler requires resulting in possible severe personal injury, death or its own vent and air piping, as specified in this manual.
  • Page 3 For direct venting, combustion air must be piped from outside to If the vent/air piping configurations cov- the boiler, following the instructions in the Boiler manual and this ered in the Ultra boiler manual and this addendum, and compliant with all applicable codes. Read the...
  • Page 4 (cont.) Figure 2 DIRECT VENT APPLICATIONS — Vent and air termination options DIRECT VENT DIRECT VENT DIRECT VENT VERTICAL vent and SIDEWALL termination VERTICAL termination SIDEWALL air Weil-McLain Vertical sidewall vent termination plate termination 3” or 4”PVC (See Boiler concentric...
  • Page 5 — Manual addendum — Venting FIRED WATER BOILER Venting & air — general (cont.) Figure 3 DIRECT EXHAUST APPLICATIONS — Vent termination options (combustion air from room) DIRECT EXHAUST DIRECT EXHAUST Sidewall termination Vertical termination Sidewall vent Vertical vent termination termination (See addendum (See addendum...
  • Page 6 * Ultra-80 and 105 boilers installed with 2-inch vent piping automatically derate due to the pressure loss in the vent and air pip- ing. The derate ranges up to 10% for the Ultra-80 at 100 feet or 15% for the Ultra-105 at 100 feet.
  • Page 7 AL29-4C vent piping — Install a PVC-to-stainless adapter supplied by the vent pipe manufacturer at the boiler vent connection and at the termination (when using Weil-McLain plate or concentric PVC termination). DO NOT mix piping from different vent pipe manufacturers unless using adapters specifically designed for the purpose by the manufacturer.

  • Page 8: Sidewall Vent/Air Termination: 3" Or 4" Concentric

    . Most kits do not Determine locations for terminations include the screens. Purchase separately from Weil-McLain or vent kit supplier if A gas vent extending through an exterior wall shall not not included. terminate adjacent to the wall or below building exten- sions such as eaves, parapets, balconies or decks.
  • Page 9 Figure 9 for U. S. installations. For Canadian installations, provide clearances required by CSA B149.1 or B149.2 Installation Code. 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.
  • Page 10 — Manual addendum — Venting FIRED WATER BOILER Sidewall vent/air termination: 3” or 4” concentric (cont.) Install terminations — concentric pipes Figure 10 Installing and supporting the concentric sidewall vent assembly Assemble the vent termination as described for vertical concentric terminations, beginning on page A-12.

  • Page 11: Vertical Vent/Air Termination: 3" Or 4" Concentric

    Locate or guard vent outlet to prevent condensate damage to at each termination . Most kits do not exterior finishes. include the screens. Purchase separately from Weil-McLain or vent kit supplier if not included. A–11 Part number 550-100-103/1110...
  • Page 12 B149.1 or B149.2 Installation Code. inner and outer pipes for a shorter finished The air inlet of an Ultra boiler is part of a direct vent connection. assembly. But you must ensure the pipes butt It is not classified as a forced air intake with regard to spacing from correctly at both ends.
  • Page 13 — Manual addendum — Venting FIRED WATER BOILER Vertical vent/air termination: 3” or 4” concentric (cont.) When inserting the partially-assembled termination kit Figure 15 3” or 4” PVC concentric termination through the roof penetration, wrap plastic or other protection supports over the end of the exposed assembly to prevent debris from entering the pipes.

  • Page 14: Concentric Vent/Air Termination Assembly

    — Manual addendum — Venting FIRED WATER BOILER Concentric vent/air termination assembly Figure 17 Figure 18 3” or 4” PVC concentric termination assembly 3” or 4” PVC concentric termination assembly (see kit manufacturer’s instructions for details) — DO NOT attach the rain cap until the termination has been inserted through the roof or wall and all supports have been installed.

  • Page 15: Direct Vent: Vertical Vent / Sidewall Air

    — Manual addendum — Venting FIRED WATER BOILER DIRECT VENT: Vertical vent / sidewall air Allowable vent/air pipe materials Determine location Use only the materials listed in Figure 5, page A-7. Locate the vent termination using the following guidelines: Purchase bird screens for vent and air termina- The vent piping must terminate in an up-turned coupling as shown tions separately.
  • Page 16 Determine location for air inlet elbow 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 appliance terminations.
  • Page 17 Place wall penetrations to obtain minimum clearances as instructed in this manual. Place adjacent air inlets for multiple Ultra boilers at least 6 inches apart. For Canadian installations, provide clearances required by CSA B149.1 or B149.2 Installation Code.

  • Page 18: Install Vent/Air Piping - Boiler To Termination

    Ultra-105 may be installed with either 2-inch or 3-inch vent and air piping. Inserting/securing vent or air As shown in the maximum length tables, the Ultra-230 may be pipe into boiler connectors installed with either 3-inch or 4-inch vent and air piping.

  • Page 19: Direct Exhaust Venting - General

    Where the Ultra boiler shares a space with other appliances, the combustion air openings must be sized to handle the combined requirements of all appliances in the space.

  • Page 20: Direct Exhaust - Boiler Room Air Openings

    DIRECT EXHAUST — Boiler room air openings Combustion air provision Special considerations The Ultra boiler can use inside air if no contaminants are present in the Tight construction boiler space. (If contaminants are likely to be present, install the boiler ANSI Z223.1 defines unusually tight construction...

  • Page 21: Air Openings

    (continued) Figure 24 MINIMUM combustion air openings for direct exhaust applications — ALL OPENING SIZES ARE FREE AREA Air openings Ultra boiler Ultra boiler The required air opening sizes below are FREE AREA, WITH other WITHOUT other after reduction for louver obstruction. Note the ex-...

  • Page 22: Direct Exhaust - Sidewall

    Use only the materials listed in Figure 5, page A-7. Install a bird screen in each vent pipe termination (coupling or elbow). Bird screens are not supplied with the Ultra boiler. Purchase separately from Weil-McLain. Maximum piping length Locate the termination such that the total vent piping from the boiler to the termination will not exceed the maximum length given in Fig- ure 4, page A-6.
  • Page 23 Locate or guard vent to prevent condensate damage to exterior finishes. Maintain clearances as shown in the illustrations in this manual Because Ultra boilers are Category IV appliances, the section. Also maintain the following: National Fuel Gas Code, ANSI Z223.1, requires that the Vent must terminate: vent must not terminate over a public walkway or over At least 6 feet from adjacent walls.
  • Page 24 Prepare the vent termination elbow ( Figure 26, page A-23) by in- serting a bird screen. Bird screens are not supplied with the Ultra boiler. Purchase separately from Weil-McLain. You can install the vent termination using either of the configura- tions shown in Figure 26, page A-23.

  • Page 25: Direct Exhaust - Vertical

    Use only the materials listed in Figure 5, page A-7. Install a bird screen in each vent pipe termination (coupling or elbow). Bird screens are not supplied with the Ultra boiler. Purchase separately from Weil-McLain. Maximum piping length Locate the termination such that the total vent piping from the boiler to the termination will not exceed the maximum length given in Fig- ure 4, page A-6.
  • Page 26 Wipe excess cement from joint. Check joint to be sure a smooth the air or vent piping. bead of cement shows around the entire joint. As shown in the maximum length tables, the Ultra- Install pipe supports as shown in Figure 11, page A-10 or Fig- 80 or Ultra-105 may be installed with either 2-inch ure 14, page A-13.
  • Page 27 AL294C vent pipe — If using AL294C stainless vent pipe, you must install a PVC-to-vent pipe adapter at the boiler vent connection (and at the termination if using the Weil-McLain plate or the concentric termination). Use only the adapter made by the vent pipe manufacturer.
  • Page 28 — Manual addendum — Venting FIRED WATER BOILER...

This manual is also suitable for:

Ultra 80Ultra 105Ultra 155Ultra 230Ultra 299Ultra 310 ... Show all

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