Instruction No. AERCO INTERNATIONAL, Inc. Northvale, New Jersey, 07647 USA PVC & CPVC Vent Installation Supplement Esteem 399 Low NOx Gas Fired Boiler I S T E D L Visit www.aerco.com to View the Latest Product Manuals and Information. Printed in U.S.A. REVISED AUGUST 2010
Telephone Support (800) 526-0288 Direct to AERCO Technical Support (8 to 5 pm EST, Monday through Friday) Please have the unit s model number and the serial number from the rating label on the backside of the control panel when calling about service or troubleshooting. Model # Serial # The information contained in this document is subject to change without notice from AERCO International, Inc. AERCO International, Inc. 159 Paris Avenue Northvale, NJ 07647-0128 www.aerco.com AERCO International, Inc., 2010 AERCO makes no warranty of any kind with respect to this material, including but not limited to implied warranties of merchantability and fitness for a particular application. AERCO International is not liable for errors appearing in this manual. Nor for incidental or consequential damages occurring in connection with the furnishing, performance, or use of this material.
Table of Contents PVC / CPVC Vent Guide for use with Esteem 399 Low NOx Boilers Contents Definitions and General Warnings i PRE-INSTALLATION ITEMS 1 Removal of an Existing Boiler............................................... 1 Vent/Combustion Air Piping................................................. 2 Combustion Air Contamination.............................................. 2 Potential contaminating materials.......................................... 3 Materials................................................................ 3 DIRECT VENT 4 Vertical Through Roof or Unused Chimney..................................... 4 Piping Length & Terminations............................................. 4 Vent and Combustion Air Penetration....................................... 5 Through Roof Termination................................................ 5 Multiple Boiler Installation................................................ 8 Horizontal Sidewall Installation.............................................. 8 Piping Length & Terminations............................................. 9 Vent and Combustion Air Penetration...................................... 12 Sidewall Terminations................................................. 12 Multiple Boiler Installation............................................... 13 Vertical Vent and Sidewall Combustion Air.................................... 15 Piping Length & Terminations............................................ 15 Vent Installation Through Roof........................................... 16 Combustion Air Sidewall Installation....................................... 16 Termination Fittings.................................................... 17 Multiple Boiler Installation............................................... 17 CATEGORY IV 18 Vertical Through Roof or Unused Chimney.................................... 18 Piping Length & Terminations............................................ 18 Vent Pipe Penetration.................................................. 19 Termination Fittings: Through roof........................................ 19 Multiple Boiler Installation............................................... 19 Horizontal / Sidewall Installation............................................ 20 Piping Length & Terminations............................................ 20 Vent Penetration...................................................... 21 Termination Fittings: Sidewall............................................ 21 Multiple Boiler Installation............................................... 21 COMMONWEALTH OF MASSACHUSETTS 24 Direct Vent............................................................ 24 Termination at or below 4 feet of Grade:...................................... 24 Direct Vent............................................................ 25 Termination 4 feet above Grade:............................................ 25 a
Definitions and General Warnings Definitions and General Warnings The following terms are used throughout this manual to bring attention to potential hazards or to important product information. DANGER INDICATES THE PRESENCE OF A HAZARDOUS SITUATION WHICH, IF IGNORED, WILL RESULT IN DEATH, SERIOUS INJURY OR PROPERTY DAMAGE. CAUTION Indicates a potentially hazardous situation which, if ignored, may result in minor injury or property damage. Indicates special instructions on installation, operation or maintenance, which are important to the equipment but not related to personal injury hazards. WARNING INDICATES A POTENTIALLY HAZARDOUS SITUA- TION WHICH, IF IGNORED, CAN RESULT IN DEATH, SERIOUS INJURY OR PROPERTY DAMAGE. This document is a supplement to the Esteem 399 Low NOx Installation and Maintenance Manual (GF-125). This supplement is for the proper installation of Direct Vent and Category IV (Indoor Air) installations using PVC and CPVC materials, for other venting options contact AERCO International. This manual is intended for use by a qualifi ed heating contractor or service technician. Please reference the User Information manual for additional information. WARNING READ ALL INSTRUCTIONS AS OUTLINED IN THIS MANUAL AND IN THE BOILER INSTALLATION MANUAL. FAILURE TO COMPLY WITH THESE IN- STRUCTIONS IN THE ORDER PRESENTED COULD RESULT IN PERSONAL INJURY OR DEATH. WARNING ALL ESTEEM VENT AND COMBUSTION AIR PIP- ING MUST BE INSTALLED, TERMINATED AND JOINTS SEALED AS OUTLINED IN THIS MANUAL. FAILURE TO COMPLY WITH INSTALLATION PRO- CEDURES OUTLINED IN THIS MANUAL CAN RE- SULT IN PERSONAL INJURY, DEATH OR PROP- ERTY DAMAGE. Ensure this document and all pertaining documents are kept near the boiler to be used by the qualifi ed heating contractor or service technician for future reference. i
PRE-INSTALLATION ITEMS Removal of an Existing Boiler PRE-INSTALLATION ITEMS Removal of an Existing Boiler DANGER THE ESTEEM BOILER MUST HAVE ITS OWN DEDI- CATED VENTING SYSTEM. DO NOT VENT THE ESTEEM INTO A COMMON VENT WITH ANY OTHER GAS OR OIL APPLIANCES. THIS WILL CAUSE FLUE GAS SPILLAGE OR APPLIANCE MALFUNCTION, AND MAY RESULT IN PROPERTY DAMAGE, PERSONAL INJURY OR DEATH. When a boiler is removed from a common venting system, the venting system may to be too large for proper function. When an existing boiler is removed, the following steps must be taken with each remaining appliance, while the other appliances are not in operation. 1. Seal any unused openings in the common venting system. 2. Visually inspect the venting system for proper size and horizontal pitch and determine there is no blockage or restriction, leakage, corrosion or other deficiencies which could cause unsafe conditions. 3. Close all building doors and windows as well as all doors between the space in which the remaining appliances are located and other spaces of the building insofar as is practical. 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. Do not operate a summer exhaust fan. Close fireplace dampers. 4. Place the appliance being inspected in operation. Follow the lighting instructions. Adjust thermostat so appliance will operate continuously. 5. Test for spillage at the draft hood relief opening after 5 minutes of main burner operation. Use the flame of a match or candle, or smoke from a cigarette, cigar or pipe. 6. Correct any improper operation of the common venting system to conform with the National Fuel Gas Code, ANSI Z223.1/NFPA 54 and/or CAN/CGA B149, Installation Codes. 7. After it has been determined that each appliance remaining connected to the common venting system properly vents when tested as outlined above, return doors, windows, exhaust fans, fireplace dampers and any other gas-burning appliance to their previous condition of use. When re-sizing any portion of the common venting system, it should be re-sized to approach the minimum size as determined using the appropriate tables in Part 11 of the National Fuel Gas Code, ANSI Z223.1/NFPA 54 and/or CAN/CGA B149, Installation Codes. DANGER DO NOT VENT THE ESTEEM INTO A COMMON VENT WITH ANY OTHER GAS OR OIL BURNING APPLIANC- ES. THIS WILL CAUSE FLUE GAS SPILLAGE OR AP- PLIANCE MALFUNCTION, RESULTING IN POSSIBLE PERSONAL INJURY, DEATH OR PROPERTY DAMAGE. 1
PRE-INSTALLATION ITEMS Vent/Combustion Air Piping Vent/Combustion Air Piping Installation of vent and combustion air piping must comply with local codes and requirements and the National Fuel Gas Code NFPA 54, ANSI Z223.1 for installations in the U.S. or with CSA B149.1 or B149.2 for installations in Canada. The Esteem is certified per ANSI Z21.13 as a Category IV (indoor air) or Direct Vent (sealed combustion) appliance. A Category IV appliance uses uncontaminated indoor or outdoor air (surrounding the appliance) for combustion. The Esteem requires a Category IV venting system designed for pressurized venting and condensate. A Direct Vent appliance uses uncontaminated outdoor air (piped directly to the appliance) for combustion. To reduce the risks associated with indoor contaminates, flammable vapors and tight housing construction, piping uncontaminated combustion air directly from the outdoors to the appliance is recommended. This also promotes higher system efficiency. Combustion Air Contamination WARNING IF THE ESTEEM COMBUSTION AIR INLET IS LO- CATED IN AN AREA LIKELY TO CAUSE OR CONTAIN CONTAMINATION, THE COMBUSTION AIR MUST BE RE-PIPED AND TERMINATED AT ANOTHER LO- CATION. CONTAMINATED COMBUSTION AIR WILL DAMAGE THE UNIT AND ITS BURNER SYSTEM, RE- SULTING IN POSSIBLE PERSONAL INJURY, DEATH OR PROPERTY DAMAGE. DANGER DO NOT OPERATE THE ESTEEM IF ITS COMBUSTION AIR INLET IS LOCATED NEAR A LAUNDRY ROOM OR POOL FACILITY. THESE AREAS WILL ALMOST AL- WAYS CONTAIN HAZARDOUS CONTAMINANTS. Pool and laundry products, common household and hobby products often contain fluorine or chlorine compounds. When these chemicals pass through the burner and vent system, they can form strong acids. These acids will corrode the heat exchanger, burner components and vent system, causing serious damage and presenting possible flue gas spillage or water leakage into the surrounding area. Please read the information listed below. If contaminating chemicals are located near the area of the combustion air inlet, the combustion air inlet must be re-routed to an area free of these chemicals. 2
PRE-INSTALLATION ITEMS Materials POTENTIAL CONTAMINATING MATERIALS Spray cans containing chloro/fl uorocarbons Permanent Wave Solutions Chlorinated wax Chlorine-based swimming pool chemicals or cleaners Chemical ice melters Sodium Chloride used for water softening Refrigerant leaks Paint or varnish removers Hydrochloric acid / muriatic acid Cements and glues Antistatic fabric softeners used in clothes dryers Chlorine-type bleaches, detergents, and cleaning solvents found in household laundry rooms Adhesives used to fasten building products and other similar products Areas likely to contain these products Dry cleaning / laundry areas and establishments Beauty salons Metal fabrication shops Swimming pools and health spas Refrigeration Repair shops Photo processing plants Auto body shops Plastic manufacturing plants Furniture refi nishing areas and establishments New building construction Remodeling areas Garages with workshops The above lists are NOT comprehensive. Installer, end user and service personnel are responsible for certifying the safety of any and all materials that may affect the quality of the combustion air. Materials WARNING THE VENT AND COMBUSTION AIR MATERIALS (PIP- ING, FITTINGS AND CEMENT) MUST MEET THE LIST- ED REQUIREMENTS IN THIS MANUAL. FAILURE TO COMPLY WITH THESE MATERIAL REQUIREMENTS COULD RESULT IN PERSONAL INJURY, DEATH OR PROPERTY DAMAGE. And 4 Vent and Combustion Air Piping and Fittings: PVC Schedule 40 - ANSI/ASTM D1785 PVC-DWV - ANSI/ASTM D2665 PVC - ANSI/ASTM D2564 OR CPVC Schedule 40 - ANSI/ASTM F441 CPVC - ANSI/ASTM F493 Pipe Cement and Primer Galvanized metal thimble Flashings and seals as needed Factory supplied bird screens For installations in Canada, all piping, fi t- tings and cement/primer material must be certifi ed and listed to ULC-S636. Do not use cellular core pipe for vent piping. Cellular core pipe may be used for combustion air piping. WARNING DO NOT MIX VENT COMPONENTS FROM DIFFER- ENT VENT SYSTEMS. USE ONLY PVC AND CPVC PIPE AND FITTINGS. SEAL ALL PIPE AND FITTINGS WITH THE APPROPRIATE PRIMER AND CEMENT. FAILURE TO COMPLY WITH THESE REQUIREMENTS COULD CAUSE VENTING SYSTEM FAILURE RESULT- ING IN LEAKAGE OF FLUE PRODUCTS INTO THE LIV- ING SPACE. 3
DIRECT VENT Vertical Through Roof or Unused Chimney DIRECT VENT INSTALLATION OF VENT & COMBUSTION AIR PIPING A Direct Vent appliance uses uncontaminated outdoor air (piped directly to the appliance) for combustion. Vertical Through Roof or Unused Chimney Installation of vent and combustion air piping must comply with local codes and requirements and with the National Fuel Gas Code NFPA 54, ANSI Z223.1 for installations in the U.S. or CSA B149.1 or B149.2 for installations in Canada. When using an unused chimney as a means of a chase for the vent, the surrounding space within the chimney cannot be used to draw combustion air or vent another appliance. WARNING A GAS VENT EXTENDING THROUGH A ROOF SHOULD NOT TERMINATE NEAR AN ADJACENT WALL OR BELOW ANY BUILDING EXTENSIONS SUCH AS ROOF EAVES, BALCONIES OR DECKS. FAILURE TO COMPLY WITH THE REQUIRED CLEARANCES IN THIS MANUAL COULD RESULT IN PERSONAL INJU- RY, DEATH OR PROPERTY DAMAGE. PIPING LENGTH & TERMINATIONS The length of the vent or combustion air piping must not exceed 100 feet reduced as follows: For every 45 elbow deduct 3 feet For every 90 elbow deduct 5 feet Do not include the exterior termination fi t- tings in determining total pipe length. Combustion air piping must terminate in an upside down U shape using two 90º elbows as shown in Figure 2 on page 6 or with a tee as shown in Figure 3 on page 6. Termination must be installed 12 [18 Canada] above the highest anticipated snow level. The vent must terminate vertically with a coupling to accept the bird screen and must be located 12 to 24 above the combustion air inlet as shown on page 6. The vent and combustion air terminations must be located a radial distance of 12 to 24 from center-line of vent termination to center-line of air termination as shown on 6. The following should be considered when determining the location of the vent and combustion air terminations: Avoid areas where the vent termination flue vapors might damage landscaping or equipment. Avoid terminating the vent where condensation plume could obstruct window. Avoid areas where prevailing winds might cause freezing of flue gas moisture resulting in a buildup of water or ice. Avoid locations where prevailing winds could affect performance or cause recirculation of the flue gases such as inside corners of buildings, near adjacent buildings, vertical surfaces, alcoves, courtyards, or other recessed areas. Do not terminate the vent above or below doors or windows. Locate the vent termination to prevent moisture damage to exterior finishes. Avoid locations of possible contact between flue vapors and people or pets. The vent termination must maintain the following clearances. See Figure 1. At least 3 feet from adjacent walls At least 3 feet below roof over hangs At least 7 feet above any public walkways 4
DIRECT VENT Vertical Through Roof or Unused Chimney At least 3 feet above any forced air intake within 10 feet (does not apply to the combustion air inlet of a direct vent appliance). No closer than 12 below or horizontally from any door, window or gravity air inlet. At least 4 feet from any electric meters, gas meters/regulators, relief valves or other equipment. Never terminate the vent above or below any of these items within 4 feet horizontally. Locate the vent and combustion air terminations in a manner to protect from damage by thrown objects (stones, balls), or buildup of leaves or sediment. Do not connect any other appliance to the vent pipe or multiple boilers to a common vent pipe. Figure 1: Termination Clearances of Direct Vent System VENT AND COMBUSTION AIR PENETRATION Vent pipe penetration through combustible or non-combustible wall material should maintain a minimum 1/4 clearance. The diameter of the penetration hole should be 5 minimum for 4 pipe. Combustion air pipe penetration can maintain zero clearance. The diameter of the penetration hole should be 4-1/2 minimum for 4 pipe. Use a galvanized metal thimble for the vent pipe penetration. Locate the vent and combustion air pipe penetrations to provide clearances as described in Figure 2 & Figure 3 on page 6. Comply with all local codes for isolating the vent and combustion air pipes as they pass through fl oors, ceilings and roofs. Provide adequate fl ashing and sealing boots sized for the vent pipe and combustion air pipe. THROUGH ROOF TERMINATION The vent and combustion air terminations must include a factory supplied bird screen installed as shown in Figure 4 through Figure 6 on page 7. The combustion air piping must terminate in an upside down U shape fashion using two 90º elbows as shown in Figure 2 on page 6 or with a tee as shown in Figure 3 on page 6 The vent piping must terminate vertically with a coupling as shown in Figure 2 & Figure 3 on page 6. Do not extend the vent pipe beyond roof more than the dimensions shown in Figure 2 & Figure 3 on page 6. Condensate could freeze and block the vent pipe. 5
Figures 2 and 3 Figures 2 and 3 Combustion Air Termination - 24" Max Above Combustion Air Inlet Radial Distance 12" [18 Canada] Above the Highest Figure 2: Direct Vent Vertical Termination of Vent and Combustion Air Piping. Combustion Air Termination - 24" Max Above Combustion Air Inlet 12" [18" Canada] Above the Highest Radial Distance Figure 3: Direct Vent Vertical Termination of Vent and Combustion Air Piping. 6 GF-125
Figures 4 through 7 Figures 4 through 7 Factory supplied bird screens must be installed on vent and combustion air terminations. Bird Screen* Figure 4: Vertical Vent Bird Screen Installation Combustion Air Termination Bird Screen* Bird Screen* Combustion Air Termination Figure 5: Vertical Combustion Air Bird Screen Installation with 90º Elbow Termination Figure 6: Vertical Combustion Air Bird Screen Installation with Tee Termination GF-125 7
DIRECT VENT Horizontal Sidewall Installation MULTIPLE BOILER INSTALLATION On installations of multiple Esteem boilers, terminate the vent and combustion air piping as described in this manual. The roof penetration of the vent and combustion air piping should be such that the combustion air inlet is a minimum 12 from the adjacent vent pipe of the other boiler for installations in the U.S. as shown in Figure 7 on page 8. For installations in Canada, provide clearances as required by CSA B149.1 or 149.2. The combustion air inlet of the Esteem is defi ned as being part of a direct vent system. It is not considered as a forced air intake. The required clearance of an adjacent boiler vent to a forced air inlet does not apply in a multiple installation of Esteem boilers. Horizontal Sidewall Installation Installation of the vent and combustion air piping must comply with local codes and requirements and with the National Fuel Gas Code NFPA 54, ANSI Z223.1 for installations in the U.S. or CSA B149.1 or B149.2 for installations in Canada. WARNING A GAS VENT EXTENDING THROUGH A SIDEWALL SHOULD NOT TERMINATE NEAR AN ADJACENT WALL OR BELOW ANY BUILDING EXTENSIONS SUCH AS ROOF EAVES, BALCONIES OR DECKS. FAILURE TO COMPLY WITH THE REQUIRED CLEARANCES IN THIS MANUAL COULD RESULT IN PERSONAL INJU- RY, DEATH OR PROPERTY DAMAGE. Typ. - 24 Max. Above Combustion Air Inlet Typ. Typ. Combustion Air Termination Typ. Radial Distance 12" [ 18 Canada] Above the Highest Figure 7: Direct Vent: Vertical Termination of Multiple Boilers 8
DIRECT VENT Horizontal Sidewall Installation For installations in the Commonwealth of Massachusetts, see on page 24 for additional requirements. To reduce the potential of the combustion air inlet freezing up, separate the vent and air terminations in both a horizontal and vertical plain as shown in Figure 8 through Figure 12 on pages 10 and 11. If the vent is terminated on a sidewall which is subject to high winds, terminate the vent using a 45º elbow or tee. A tee provides the best protection against wind but can expose the exterior of the house to condensate. A 45º elbow improves protection from both. PIPING LENGTH & TERMINATIONS The length of the vent or combustion air piping must not exceed 100 feet reduced as follows: For every 45 elbow deduct 3 feet For every 90 elbow deduct 5 feet Do not include the exterior termination fi t- tings in determining total pipe length. The combustion air pipe must terminate using a 90º elbow directed away from the vent termination. The combustion air termination must be installed 12 minimum above grade / highest anticipated snow level and as shown in Figure 8 through Figure 15 on pages 10 & 11. The combustion air termination can be placed either side of the vent termination, a minimum 12 apart. The combustion air termination must be directed away from the vent. Options are: 90º elbow as shown in Figure 8 on page 10 or Figure 9 on page 10. Coupling as shown in Figure 10 on page 10 or Figure 13. Tee as shown in Figure 11 on page 10 or Figure 14 on page 11. 45º elbow as shown in Figure 12 on page 11 or Figure 15 on page 11. The vent termination must be installed 12 minimum above grade or the highest anticipated snow level whichever is greater. Do not extend the vent pipe beyond the exterior sidewall more than the dimensions shown in Figure 8 on page 10 through Figure 15 on page 11. Condensate could freeze and block the vent pipe. The combustion air and vent pipe center lines must be a minimum of 12 apart as shown in Figure 8 on page 10 through Figure 15 on page 11 The following should be considered when determining the location of the vent and combustion air terminations: Avoid areas where the vent termination flue vapors might damage landscaping or equipment. Avoid terminating the vent where condensation plume could obstruct window. Avoid areas where prevailing winds might cause freezing of flue gas moisture resulting in a buildup of water or ice. Avoid locations where prevailing winds could affect performance or cause recirculation of the flue gases inside corners, near adjacent buildings, vertical surfaces, alcoves, courtyards, or other recessed areas. Do not terminate the vent above or below doors or windows. Locate the vent termination to prevent possible moisture damage to exterior finishes. Avoid locations of possible contact between flue vapors and people or pets. 9
Figures 8 through 11 Figures 8 through 11 Combustion Air Termination - 24 Max. To Wall Typ. Combustion Air Termination Above Grade / Highest - 24 Max. Above Grade / Highest 12" Max. 24" Max. - 24 Max. To Wall Typ. Figure 8: Direct Vent: Sidewall Termination of Vent and Combustion Air Piping Figure 9: Direct Vent: Sidewall Snorkel Termination of Vent and Combustion Air Piping Combustion Air Termination Vent Termination Combustion Air Termination - 24 Max. To Wall Typ. 12 Min. 24" Max. Above Grade / Highest Anticipated Snow Level Above Grade / Highest 24" Max. 12" Max. -24" Max. To Wall Typ. Figure 10: Direct Vent: Alternate Sidewall Termination of Vent and Combustion Air Piping Figure 11: Direct Vent: Sidewall Snorkel Termination of Vent and Combustion Air Piping with Tee Vent Termination 10 GF-125
Figures 12 through 15 Figures 12 through 15 Vent Termination Combustion Air Termination 24" Max. Combustion Air Termination* 12" Max. Above Grade / Highest - 24 Max. To Wall Typ. Figure 12: Direct Vent: Sidewall Snorkel Termination of Vent and Combustion Air Piping with 45º Vent Termination - 24 Max. To Wall Typ. Above Grade/Highest Anticipated Snow Level Figure 13: Direct Vent: Sidewall Termination of Vent and Combustion Air Piping with Coupling Vent Termination *In Figures 14 & 15 below Combustion Air Termination is to slope downward at a 15º angle. Combustion Air Termination* Combustion Air Termination* - 24" Max. To Wall Typ. Above Grade/ Highest Anticipated Snow Level - 24 Max. To Wall Typ. Above Grade/Highest Anticipated Snow Level Figure 14: Direct Vent: Sidewall Termination of Vent and Combustion Air Piping with Tee Figure 15: Direct Vent: Sidewall Termination of Vent and Combustion Air Piping with 45º GF-125 11
DIRECT VENT Horizontal Sidewall Installation The vent termination must maintain the following clearances; as shown in Figure 1 on page 5. At least 3 feet from adjacent walls At least 3 feet below roof overhangs At least 7 feet above any public walkways At least 3 feet above any forced air intake within 10 feet (does not apply to the combustion air inlet of a direct vent appliance). No closer than 12 below or horizontally from any door, window or gravity air inlet. Must be at least 4 feet from electric meters, gas meters-regulators, relief valves or other equipment. Never terminate the vent above or below any of these items or within 4 feet horizontally. A minimum of 12 or a maximum of 24 beyond the exterior wall. The combustion air termination must extend a minimum of 12 beyond the exterior wall. Locate the vent and combustion air terminations in a manner so as to protect from damage by foreign objects, such as stones, balls, buildup of leaves or sediment. Do not connect any other appliance to the vent pipe or multiple boilers to a common vent pipe. VENT AND COMBUSTION AIR PENETRATION Vent pipe penetration through combustible or non-combustible wall material should maintain a minimum 1/4 clearance. The diameter of the penetration hole should be 5 minimum for 4 pipe. Combustion air pipe penetration can maintain zero clearance. The diameter of the penetration hole should be 4 1/2 minimum for 4 pipe. Use a galvanized metal thimble for the vent pipe penetration. Locate the vent and combustion air pipe penetrations to provide clearances as described in Figure 8 on page 10 through Figure 15 on page 11. Comply with all local codes for isolating the vent pipe as it passes through fl oors and walls. Seal all exterior openings around penetration with an exterior silicon caulk. SIDEWALL TERMINATIONS The vent and combustion air terminations must include a factory supplied bird screen installed as shown in Figure 17 through Figure 20 on page 14. The combustion air pipe must terminate using a 90º elbow as shown in Figure 8 on page 10 through Figure 15 on page 11. Vent pipe termination options: 90º elbow as shown in Figure 8 or Figure 9 on page 10. Coupling as shown in Figure 10 on page 10 or Figure 13 on page 11. Tee as shown in Figure 11 on page 10 or Figure 14 on page 11. 45º elbow as shown in Figure 12 or Figure 15 on page 11. The vent termination must be installed 12 minimum above grade / highest anticipated snow level. Do not extend the vent pipe outside the 12
DIRECT VENT Vertical Vent and Sidewall Combustion Air sidewall beyond the dimensions shown in Figure 8 on page 10 through Figure 15 on page 11. Condensate could freeze and block the vent pipe. MULTIPLE BOILER INSTALLATION On installations of multiple Esteem boilers, terminate each vent and combustion air pipe as described in this manual. The wall penetration of the vent and combustion air pipe should be such that the combustion air inlet is a minimum 12 from the adjacent vent pipe of the other boiler for installations in the U.S. as shown in Figure 16 on page 13. For installations in Canada, provide clearances as required by CSA B149.1 or 149.2. The combustion air inlet of the Esteem is part of a direct vent system. It is not considered a forced air intake. The required clearance of an adjacent boiler vent to a forced air inlet does not apply in multiple installation of Esteem boilers. Figure 16 shows one option for vent and combustion air terminations of multiple Esteem boilers. Any termination option shown in Figure 8 on page 10 through Figure 12 on page 11 can be used for multiple Esteem boilers. The 12 minimum distance between center lines of the combustion air and vent piping must be maintained for any chosen option. Reference Figure 8 on page 10 through Figure 12 on page 11 for the confi guration dimensions for the vent and combustion air inlet terminations for each unit installed in a multiple installation. Vent Termination Typ. - 24 Max - 24 Max. To Wall Typ. Above Grade/Highest Combustion Air Termination Figure 16: Direct Vent: Horizontal Termination of Multiple Boilers 13
Figures 17 through 20 Figures 17 through 20 Factory supplied bird screens must be installed on vent and combustion air terminations. Bird Screen* Bird Screen* Figure 17: Horizontal Vent Bird Screen Installation with Coupling Termination Figure 18: Horizontal Vent Bird Screen Installation with 45º Elbow Termination Bird Screen* Combustion Air Termination Bird Screen* Figure 19: Horizontal Vent Bird Screen Installation with Tee Termination Figure 20: Horizontal Combustion Air Bird Screen Installation with 90º Elbow Termination 14 GF-125
DIRECT VENT Vertical Vent and Sidewall Combustion Air Vertical Vent and Sidewall Combustion Air Installation of vent and combustion air piping must comply with local codes and requirements and with the National Fuel Gas Code NFPA 54, ANSI Z223.1 for installations in the U.S. or CSA B149.1 or B149.2 for installations in Canada. When using an inoperative chimney as a chase for the vent, the surrounding space in the chimney cannot be used to draw combustion air or vent another appliance. WARNING GAS VENT EXTENDING THROUGH ROOF SHOULD NOT TERMINATE NEAR ADJACENT WALLS OR BE- LOW ANY BUILDING EXTENSIONS (ROOF EAVES, BALCONIES OR DECKS). FAILURE TO KEEP THE REQUIRED CLEARANCES IN THIS MANUAL CAN RE- SULT IN PROPERTY DAMAGE, PERSONAL INJURY OR DEATH. PIPING LENGTH & TERMINATIONS The length of the vent or combustion air piping must not exceed 100 feet reduced as follows: For every 45 elbow deduct 3 feet For every 90 elbow deduct 5 feet Do not include the exterior termination fi t- tings in determining total pipe length. Combustion air piping must terminate with a 90º elbow. For confi gurations See: Figure 8 on page 10 Figure 13 on page 11 Figure 21 on page 15 The combustion air termination must be installed 12 minimum above grade / highest anticipated snow level and as shown in Figure 8 on page 10, Figure 13 on page 11 or Figure 21 on page 15. The vent must terminate vertically with a coupling to accept the bird screen and must be 12" [ 18 Canada] Above the Highest Combustion Air Termination 36" Max. - 24 Max. To Wall Above Grade / Highest Figure 21: Direct Vent Vertical Vent and Side Wall Combustion Air 15
DIRECT VENT Vertical Vent and Sidewall Combustion Air located 12 [18 in Canada] above the highest anticipated snow level. The following should be considered when determining the location of the vent and combustion air terminations: Avoid areas where the vent termination flue vapors might damage landscaping or equipment. Avoid terminating the vent where condensation plume could obstruct window. Avoid areas where prevailing winds might cause freezing of flue gas moisture resulting in a buildup of water or ice. Avoid locations where prevailing winds could affect performance or cause recirculation of the flue gases such as inside corners of buildings, near adjacent buildings, vertical surfaces, alcoves, courtyards, or other recessed areas. Do not terminate the vent above or below doors or windows. Locate the vent termination to prevent possible moisture damage to exterior finishes. Avoid locations of possible contact between flue vapors and people or pets. The vent termination must also maintain the following clearances; as shown in Figure 1 on page 5. At least 3 feet from adjacent walls At least 3 feet below roof over hangs At least 7 feet above any public walkways At least 3 feet above any forced air intake within 10 feet (does not apply to the combustion air inlet of a direct vent appliance). No closer than 12 below or horizontally from any door or window or gravity air inlet. Must be at least 4 feet from any electric meters, gas meters-regulators, relief valves or other equipment. Never terminate the vent above or below any of these items within 4 feet horizontally. The combustion air termination must extend a minimum of 12 beyond the exterior wall. Locate the vent termination and combustion air inlet in a manner to protect from damage by foreign objects, such as stones, balls, or buildup of leaves or sediment. Do not connect any other appliance to the vent pipe or multiple boilers to a common vent pipe. VENT INSTALLATION THROUGH ROOF Vent pipe penetration through combustible or non-combustible wall material should maintain a minimum 1/4 clearance. The diameter of the penetration hole should be 5 minimum for 4 pipe. Use a galvanized metal thimble for the vent pipe penetration. The vent must terminate 12 [18 Canada] above the highest anticipated snow level. Comply with all local codes for isolating the vent pipe as it passes through fl oors, ceilings and roofs. Provide adequate fl ashing and sealing boots sized for the vent pipe. COMBUSTION AIR SIDEWALL INSTALLATION Combustion air pipe penetration can have zero clearance. The penetration hole diameter should be 4 1/2 minimum for 4 pipe. The combustion air termination must be installed 12 minimum above grade / highest anticipated snow level and as shown in Figure 8, Figure 10 or Figure 13 pages 10 and 11. All local codes for isolating the combustion air pipe as it passes through fl oors and walls must be met. Seal all exterior openings around penetration with an exterior silicon caulk. 16
DIRECT VENT Vertical Vent and Sidewall Combustion Air TERMINATION FITTINGS The vent and combustion air terminations must include a factory supplied bird screen installed as shown in Figure 4 on page 7 & Figure 20 on page 14. The combustion air piping must terminate through the sidewall using a 90º elbow as shown in Figure 8 through Figure 11 on page 10 or Figure 12 through Figure 15 on page 11. The vent piping must terminate vertically through the roof with a coupling to accept the bird screen and must be located 12 [18 Canada] above the highest anticipated snow level. Do not extend the vent pipe above the roof beyond the dimension shown in Figure 21 on page 15. Condensate could freeze and block the vent pipe. MULTIPLE BOILER INSTALLATION Vertical Vent and Sidewall Combustion Air On installations of multiple Esteem boilers, terminate each vent and combustion air piping as described in this manual. Each vent and combustion air termination must be a minimum 12 from the adjacent termination for installations in the U.S. as shown in Figure 22 on page 17. For installations in Canada, provide clearances as required by CSA B149.1 or 149.2. The combustion air inlet of the Esteem is part of a direct vent system. It is not considered as a forced air intake. The required clearance of an adjacent boiler vent to a forced air inlet does not apply in a multiple installation of Esteem boilers. 12" [18 Canada] Above Highest Typ. Combustion Air Termination Above Grade / Highest 36" Max. - 24 Max. To Wall Typ. Figure 22: Direct Vent: Vertical Termination of Vent and Sidewall Termination of Combustion Air of Multiple Boilers 17
CATEGORY IV Vertical Through Roof or Unused Chimney CATEGORY IV Installation of Vent Piping A Category IV appliance uses uncontaminated indoor or outdoor air surrounding the appliance for combustion. Please see Combustion Air Contamination on page 2 for information. Vertical Through Roof or Unused Chimney Installation of the vent and combustion air piping must comply with local codes and requirements and with the National Fuel Gas Code NFPA 54, ANSI Z223.1 for installations in the U.S. or CSA B149.1 or B149.2 for installations in Canada. When using an inoperative chimney as a means of a chase for the vent, the surrounding space within the chimney cannot be used to draw combustion air or vent another appliance. WARNING GAS VENT EXTENDING THROUGH A ROOF SHOULD NOT TERMINATE NEAR AN ADJACENT WALL OR BE- LOW ANY BUILDING EXTENSIONS SUCH AS ROOF EAVES, BALCONIES OR DECKS. FAILURE KEEP THE REQUIRED CLEARANCES IN THIS MANUAL COULD RESULT IN PERSONAL INJURY, DEATH OR PROP- ERTY DAMAGE. a coupling and must be located 12 [18 Canada] above the highest anticipated snow level. See Figure 23 on page 18. The following should be considered when determining the location of the vent termination: Avoid areas where the vent termination flue vapors might damage landscaping or equipment. Avoid terminating the vent where condensation plume could obstruct window. Avoid areas where prevailing winds might cause freezing of flue gas moisture resulting in a buildup of water or ice. Avoid locations where prevailing winds could affect performance or cause recirculation of the flue gases such as inside corners of buildings, near adjacent buildings, vertical surfaces, alcoves, courtyards, or other recessed areas. Do not terminate the vent above or below doors or windows. Locate the vent termination to prevent moisture damage to exterior finishes. Avoid locations of possible contact between flue vapors and people or pets. PIPING LENGTH & TERMINATIONS The length of the vent or combustion air piping must not exceed 100 feet reduced as follows: 12" [ 18 Canada] Above the Highest For every 45 elbow deduct 3 feet For every 90 elbow deduct 5 feet Do not include the exterior termination fi t- tings in determining total pipe length. The combustion air piping must terminate at the boiler with a 90º elbow. The vent must terminate vertically with Figure 23: Category IV: Vertical Termination of Vent Pipe 18
CATEGORY IV Vertical Through Roof or Unused Chimney The vent termination must also maintain the following clearances. See Figure 24 on page 19. At least 3 feet from adjacent walls At least 3 feet below roof over hangs At least 7 feet above any public walkways At least 3 feet above any forced air intake within 10 feet. No closer than 4 feet below or horizontally from any door or window or gravity air inlet. Locate the vent and combustion air terminations in a manner to protect from damage by thrown objects (stones, balls), or buildup of leaves or sediment. Do not connect any other appliance to the vent pipe or multiple boilers to a common vent pipe. VENT PIPE PENETRATION Vent pipe penetration through combustible or non-combustible wall material should maintain a minimum 1/4 clearance. The diameter of the penetration hole should be 5 minimum for 4 pipe. Use a galvanized metal thimble for the vent pipe penetration. Locate the penetration to provide clearances as described in Figure 23 on page 18 Comply with all local codes for isolating the vent pipe as it passes through fl oors, ceilings and roofs. Provide adequate fl ashing and a sealing boot sized for the vent pipe. TERMINATION FITTINGS: THROUGH ROOF Vent pipe and combustion air pipe terminations must include a factory supplied bird screen. See Figure 4 & Figure 5 on page 7. The combustion air piping must terminate at the boiler with a 90º elbow. The vent piping must terminate vertically with a coupling. See Figure 23 on page 18. Do not extend the vent pipe above the roof beyond the given dimensions shown in Figure 23 on page 18. Condensate could freeze and block the vent pipe. MULTIPLE BOILER INSTALLATION On installations of multiple Esteem boilers, terminate each vent pipe as described in this manual. Each vent termination must be a minimum 12 from the adjacent termination for U.S. installations. See Figure 25 on page 19. For installations in Canada, provide clearances as required by CSA B149.1 or 149.2. 12" [ 18 Canada] Above the Highest Figure 24: Termination Clearances of Category IV System Figure 25: Category IV- Vertical Termination of Multiple Boilers 19
CATEGORY IV Horizontal / Sidewall Installation Horizontal / Sidewall Installation WARNING INSTALLATION OF THE VENT AND COMBUSTION AIR PIPING MUST COMPLY WITH LOCAL CODES AND RE- QUIREMENTS AND WITH THE NATIONAL FUEL GAS CODE NFPA 54, ANSI Z223.1 FOR INSTALLA- TIONS IN THE U.S. OR CSA B149.1 OR B149.2 FOR INSTALLATIONS IN CANADA. For direct vent (sidewall) installations in the Commonwealth of Massachusetts, the installer must comply with the additional requirements outlined on pages 31 and 32. WARNING A GAS VENT EXTENDING THROUGH A SIDEWALL SHOULD NOT TERMINATE NEAR AN ADJACENT WALL OR BELOW ANY BUILDING EXTENSIONS SUCH AS ROOF EAVES, BALCONIES OR DECKS. FAILURE TO COMPLY WITH THE REQUIRED CLEARANCES IN THIS MANUAL COULD RESULT IN PERSONAL INJU- RY, DEATH OR PROPERTY DAMAGE. If the vent is terminated on a sidewall which is subject to high winds use a 45º elbow or tee. A tee is the best protection against wind but can expose the exterior wall to condensate, while a 45º elbow improves protection from both. PIPING LENGTH & TERMINATIONS The length of the vent or combustion air piping must not exceed 100 feet reduced as follows: For every 45 elbow deduct 3 feet For every 90 elbow deduct 5 feet Do not include the exterior termination fi t- tings in determining total pipe length. The combustion air piping must terminate at the boiler with a 90º elbow. Vent Pipe Terminations: 90º elbow as shown in Figure 29 on page 22 Coupling as shown in Figure 26 on page 22 Tee as shown in Figure 27 on page 22 or Figure 30 on page 23. 45º elbow as shown in Figure 28 on page 22 or Figure 31 on page 23. The vent termination must be installed 12 minimum above grade / highest anticipated snow level. Do not extend the vent pipe outside the sidewall beyond the dimensions shown in Figure 26 on page 22 through Figure 31 on page 23. Condensate could freeze and block the vent pipe. The following should be considered when determining the location of the vent termination: Avoid areas where the vent termination flue vapors might damage landscaping or equipment. Avoid terminating the vent where condensation plume could obstruct window. Avoid areas where prevailing winds might cause freezing of flue gas moisture resulting in a buildup of water or ice. Avoid locations where prevailing winds could affect performance or cause recirculation of the flue gases such as inside corners of buildings, near adjacent buildings, vertical surfaces, alcoves, courtyards, or other recessed areas. Do not terminate the vent above or below doors or windows. Locate the vent termination to prevent moisture damage to exterior finishes. Avoid locations of possible contact between flue vapors and people or pets. 20
CATEGORY IV Horizontal / Sidewall Installation The vent termination must maintain the following clearances. See Figure 24 on page 19. At least 3 feet from adjacent walls At least 3 feet below roof overhangs At least 7 feet above any public walkways At least 3 feet above any forced air intake within 10 feet. No closer than 4 feet below or horizontally from any door, window or gravity air inlet. At least 4 feet from any electric meters, gas meters-regulators, relief valves or other equipment. Never terminate the vent above or below any of these items within 4 feet horizontally. A minimum 12 to a maximum 24 beyond the exterior wall. The combustion air must terminate at the boiler with a 90º elbow. Locate the vent termination in a matter to protect from damage by foreign objects, such as stones or balls or subject to buildup of leaves or sediment. Do not connect any other appliance to the vent pipe or multiple boilers to a common vent pipe. VENT PENETRATION Vent pipe penetration through combustible or non-combustible wall material should maintain a minimum 1/4 clearance. The diameter of the penetration hole should be 5 minimum for 4 pipe. Use a galvanized metal thimble for the vent pipe penetration. Locate the vent pipe penetration to provide minimum clearances as described in Figure 26 on page 22 through Figure 31 on page 23. Comply with all local codes for isolating the vent pipe as it passes through fl oors and walls. Seal all exterior openings around penetrations with an exterior silicon caulk. TERMINATION FITTINGS: SIDEWALL The vent and combustion air terminations must include a factory supplied bird screen installed as shown in Figure 17 through Figure 20 on page 14. The combustion air piping must terminate at the boiler with a 90º elbow. Vent Pipe Terminations: 90º elbow as shown in Figure 29 on page 22. Coupling as shown in Figure 26 on page 22. Tee as shown in Figure 27 on page 22 or Figure 30 on page 23. 45º elbow as shown in Figure 28 on page 22 or Figure 31 on page 23. The vent termination must be installed 12 minimum above grade / highest anticipated snow level. Do not extend the vent pipe outside the sidewall beyond the dimensions shown in Figure 26 on page 22 through Figure 31 on page 23. Condensate could freeze and block the vent pipe. MULTIPLE BOILER INSTALLATION On of multiple boiler installations terminate each vent pipe as described in this manual. The wall penetrations of vents should be a minimum 12 from the nearest vent pipe of another boiler for installations in the U.S. as shown Figure 32 on page 23. For installations in Canada, provide clearances as required by CSA B149.1 or 149.2. Any termination option shown in Figure 26 on page 22 through Figure 31 on page 23 can be used for multiple boilers. The 12 minimum distance between center lines of the vent piping must be maintained for any option. 21
Figures 26 through 29 Figures 26 through 29-24 Max. To Wall - 24" Max, To Wall Above Grade / Highest Above Grade / Highest Figure 26: Category IV: Sidewall Termination of Vent Pipe with Coupling Termination Figure 27: Category IV: Sidewall Termination of Vent Pipe with Tee Termination -24 Max. To Wall Above Grade / Highest - 24" Max. To Wall 36 Max. Above Grade / Highest Figure 28: Category IV: Sidewall Termination of Vent Pipe with 45º Termination Figure 29: Category IV: Sidewall Snorkel Termination of Vent Pipe with 90º Elbow Termination 22 GF-125
Figures 30 through 32 Figures 30 through 32-24 Max. To Wall - 24 Max. To Wall 36" Max. Above Grade / Highest 36" Max. Above Grade / Highest Figure 30: Category IV: Sidewall Snorkel Termination of Vent Pipe with Tee Termination Figure 31: Category IV: Sidewall Snorkel Termination of Vent Pipe with 45º Elbow Termination 36" Max. Vent Termination Above Grade / Highest -24 Max. To Wall Typ. Figure 32: Category IV: Multiple Boiler Sidewall Vent Terminations GF-125 23
COMMONWEALTH OF MASSACHUSETTS Direct Vent COMMONWEALTH OF MASSACHUSETTS Direct Vent Termination at or below 4 feet of Grade: The following instructions apply to the installation of a direct vented appliance whose vent termination and combustion air inlet are installed at or below a four foot elevation (above the grade). If not already present in the structure of the building, a carbon monoxide detector and alarm must be installed in the living area outside the bedroom(s). The carbon monoxide detector and alarm is provided by the installer. The carbon monoxide detector and alarm installed in the living space outside the bedrooms shall comply with NFPA 720 (2005 edition). A carbon monoxide detector and alarm shall be installed in the mechanical room in which the direct vent appliance is located. The carbon monoxide detector and alarm shall: Be installed on the same 120 volt service circuit as the appliance such that only one service switch services both the appliance and the carbon monoxide detector. Provide battery back-up power in case of power failure The carbon monoxide detector and alarm installed within the same room as the direct vent appliance must meet ANSI/UL 2034 standards and comply with NFPA 720 (2005 edition). The carbon monoxide detector and alarm must be tested, approved and listed with a Nationally Recognized Testing Lab as recognized under 527 cm. The direct vent termination must be approved for the appliance and when applicable the combustion air inlet must be approved for the appliance. Installation of the vent termination and combustion air inlet shall be in strict compliance with the installation instructions provided with the appliance. The installer must leave the appliance installation manual and any documentation regarding the installation of the venting, vent termination and combustion air inlet with the appliance upon completion of the installation. A metal or plastic identifi cation plate (provided by the installer) must be mounted on the exterior wall of the building 4 feet directly above the location of the vent termination and combustion air inlet. The identifi cation plate shall read Gas Vent Directly Below. The size of the plate and lettering shall be of suffi cient size to be easily read from a distance of 8 feet. 24
Direct Vent Termination 4 feet above Grade: COMMONWEALTH OF MASSACHUSETTS Direct Vent The following instructions apply to the installation of a direct vented appliance whose vent termination and combustion air inlet are installed at greater than a four foot elevation above the grade. If not already present in the structure of the building, a carbon monoxide detector and alarm must be installed in the living area outside the bedroom(s). The carbon monoxide detector and alarm is provided by the installer. The carbon monoxide detector and alarm installed in the living space outside the bedrooms must comply with NFPA 720 (2005 edition). A carbon monoxide detector and alarm shall be installed in the mechanical room in which the direct vent appliance is located. The carbon monoxide detector and alarm shall: Be either hard wired or battery powered or both The carbon monoxide detector and alarm installed within the same room as the direct vent appliance must comply with NFPA 720 (2005 edition). The direct vent termination must be approved for the appliance and when applicable the combustion air inlet must be approved for the appliance. Installation of the vent termination and combustion air inlet shall be in strict compliance with the installation instructions provided with the appliance. The installer must leave the appliance installation manual and any documentation regarding the installation of the venting, vent termination and combustion air inlet with the appliance upon completion of the installation. 25