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Gas-fired
water boiler
Vent Supplement
Ultra-80, -105, -155, -230 & -310
Installation of:
• Vent piping
Air piping
with
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 F
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GAS-FIRED WATER BOILER — Vent Supplement Contents Please read before proceeding ........................................................ 2 Vent and air piping materials ............................................................ 3 Prepare boiler location ...................................................................... 4 Vent/air termination — through roof ................................................ 6 Vent/air termination — sidewall ...................................................
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GAS-FIRED WATER BOILER — Vent Supplement 1 Vent and air piping materials Use only the materials listed in the table below for vent and air pipe and fittings. 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 number 550-101-235/0903 3
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GAS-FIRED WATER BOILER — Vent Supplement 2 Prepare boiler location Removing from existing vent Any improper operation of common venting system should be corrected so the installation conforms with the National Fuel Gas Code, ANSI Z223.1 — latest Do not install the Ultra into a common edition. Correct by resizing to approach the minimum vent with any other appliance. This will size as determined using the appropriate tables in cause flue gas spillage or appliance Part 11 of that code. Canadian i
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GAS-FIRED WATER BOILER — Vent Supplement 2 Prepare boiler location (continued) Air contamination Table 1 Corrosive contaminants Pool and laundry products and common household and hobby products often contain fluorine or chlorine compounds. When these chemicals pass through the boiler, they can form strong acids. The acid can eat through the boiler wall, causing serious damage and presenting a possible threat of flue gas spillage or boiler water leakage into the building. Please read the informa
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GAS-FIRED WATER BOILER — Vent Supplement 3 Vent/air termination — through roof Follow instructions below when determining vent Figure 1 Vertical termination of air & vent location to avoid possibility of 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. Determine location Locate the vent/air terminations using th
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GAS-FIRED WATER BOILER — Vent Supplement 3 Vent/air termination — through roof (continued) Prepare roof penetrations Multiple vent/air terminations 1. Air pipe penetration: 1. When terminating multiple Ultra boilers, terminate each vent/air connection as described in this a. Cut a hole for the air pipe. Size the air pipe hole as supplement. close as desired to the air pipe outside diameter. Terminate all vent pipes at the same height 2. Vent pipe penetration: and all air pipes at the same heigh
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GAS-FIRED WATER BOILER — Vent Supplement 4 Vent/air termination — sidewall Follow instructions below when determining vent Figure 3 Sidewall termination of air & vent: location to avoid possibility of severe personal injury, (Apply left illustration unless air termination ell death or substantial property damage. would not provide the minimum 12 inch clearance to grade or snow line. A gas vent extending through an exterior wall shall not Apply right illustration for other applications, terminat
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GAS-FIRED WATER BOILER — Vent Supplement 4 Vent/air termination — sidewall (continued) Determine location (continued) Prepare wall penetrations 6. Locate terminations so they are not likely to be 1. Air pipe penetration: damaged by foreign objects, such as stones or balls, a. Cut a hole for the air pipe. Size the air pipe hole or subject to buildup of leaves or sediment. as close as desired to the air pipe outside 7. Do not connect any other appliance to the vent pipe diameter. or multiple boil
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GAS-FIRED WATER BOILER — Vent Supplement 4 Vent/air termination — sidewall (continued) Termination and fittings Figure 7 Multiple vent/air terminations (must also comply with Figure 4) 1. Prepare the vent termination elbow and the air termination elbow (Figure 6) by inserting the bird screens provided with the boiler. Bird screens are provided for either 3-inch (Ultra-80, -105 and -155) or 4-inch (Ultra-230 and -310) fittings. a. If using 3-inch piping for an Ultra-230, cut the 4- inch bird sc
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GAS-FIRED WATER BOILER — Vent Supplement 5 Installing vent & air piping Installation must comply with local requirements and Installing vent or air piping with the National Fuel Gas Code, ANSI Z223.1 for U.S. For reference in following see: installations or CSA B149.1 or B149.2 for Canadian installations. Sidewall termination — Figure 9, page 12. Through-roof termination — Figure 10, page 12. 1. Work from the boiler to vent or air termination. Do not exceed the lengths given in Table 2 for
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GAS-FIRED WATER BOILER — Vent Supplement 5 Installing vent & air piping (continued) Table 2 Min/max lengths of either air piping Figure 10 Piping to through-roof terminations or vent piping Figure 9 Piping to sidewall terminations When a large number of elbows is needed with 3-inch piping, use long radius elbows to reduce pressure drop. This allows a longer run of piping. See Table 2 notes for details. Do not insulate vent piping. Exception: Where vent pipes pass through unheated spaces, such a
