Watts Aerco INN 600N Manual
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Watts Aerco INN 600N Manual

Innovation water heaters, with edge i controller
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Venting and Combustion
Air Design Guide
Innovation Water Heaters
With Edge [i] Controller
Applies to models:
•
INN 600N
•
INN 800N
•
INN 1060N
•
INN 1350N
Disclaimer
The information contained in this manual is subject to change without notice
from AERCO International, Inc. 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, not for incidental or consequential
damages occurring in connection with the furnishing, performance, or use of
these materials.
TAG-0090_B • GF-5056 • 2/20/2020
AERCO International, Inc. • 100 Oritani Drive • Blauvelt, NY 10913
USA: T: (845) 580-8000 • Toll Free: (800) 526-0288 • AERCO.com
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
Heating and Hot Water Solutions
© 2020 AERCO

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Summary of Contents for Watts Aerco INN 600N

  • Page 1 Venting and Combustion Air Design Guide Innovation Water Heaters With Edge [i] Controller Applies to models: • INN 600N • INN 800N • INN 1060N • INN 1350N Disclaimer The information contained in this manual is subject to change without notice from AERCO International, Inc.

  • Page 2: Table Of Contents

    Innovation Water Heaters – Edge [i] Controller Venting and Combustion Air Design Guide Table of Contents CODES, SAFETY & VENTING SYSTEMS ........... 3 1.1. Introduction ........................3 1.2. Applicable Federal Codes ....................3 1.3. Gas Vent Categories ...................... 4 1.4. Certified Venting Materials for Flue Pipe Systems ............

  • Page 3: Codes, Safety & Venting Systems

    Innovation Water Heaters – Edge [i] Controller Venting and Combustion Air Design Guide 1. CODES, SAFETY & VENTING SYSTEMS 1.1. Introduction The AERCO gas-fired water heater is a high efficiency, forced draft, domestic hot water heating unit with unique venting capabilities. All venting options (which include horizontal and vertical discharges, direct vent, and manifolded vent breeching), typically exceed the capabilities of competing combustion equipment.

  • Page 4: Gas Vent Categories

    Innovation Water Heaters – Edge [i] Controller Venting and Combustion Air Design Guide WARNING! • FOR CORRECT INSTALLATION OF VENT SYSTEM, READ ALL OF THESE INSTRUCTIONS REFER VENT PIPE MANUFACTURER’S INSTRUCTIONS. • FAILURE TO USE THE VENTING SYSTEM DESCRIBED IN THIS DOCUMENT WILL VOID THE MANUFACTURER’S WARRANTY AND MAY RESULT IN RAPID DETERIORATION OF THE VENTING SYSTEM, CREATING A POTENTIAL HEALTH HAZARD.

  • Page 5: Certified Venting Materials For Flue Pipe Systems

    Innovation Water Heaters – Edge [i] Controller Venting and Combustion Air Design Guide 1.4. Certified Venting Materials for Flue Pipe Systems Innovation Water Heaters are a Category II and IV or Type BH appliance, which require special attention to exhaust venting and combustion air details. The exhaust vent MUST be UL listed for use with Category II and IV appliances.

  • Page 6: Exhaust Vent Connection Components

    Innovation Water Heaters – Edge [i] Controller Venting and Combustion Air Design Guide 1.5. Exhaust Vent Connection Components Figure 1 shows the components and part numbers for connecting the exhaust vents for the Innovation-Edge models. Exhaust Vent Adapters INN 600N, INN 800N, INN 1060N, INN INN 600N 1350N 4”...

  • Page 7: Pressure Range

    Innovation Water Heaters – Edge [i] Controller Venting and Combustion Air Design Guide 1.6. PRESSURE RANGE • For individually vented units, the exhaust system must be designed so that pressure measured at every point is in the range from -0.10” W.C. to +0.81” W.C. (-25 Pa to 202 Pa).

  • Page 8: Combustion Air System

    Innovation Water Heaters – Edge [i] Controller Venting and Combustion Air Design Guide 2. COMBUSTION AIR SYSTEM WARNING AIR OPENINGS TO COMBUSTION AREA MUST NOT BE OBSTRUCTED. USE THE INFORMATION BELOW TO ENSURE THAT ADEQUATE COMBUSTION AIR IS MAINTAINED. 2.1. Combustion Air Requirements Innovation water heaters require the following combustion air volumes when operated at full capacity: INNOVATION-EDGE...

  • Page 9: Combustion Air From Within The Building

    Innovation Water Heaters – Edge [i] Controller Venting and Combustion Air Design Guide 5. The mechanical room must not be under negative pressure under any circumstances (even when the combustion air is direct ducted). If necessary, ventilate the room to prevent this condition from occurring.

  • Page 10: Combustion Air From Outside The Building

    Innovation Water Heaters – Edge [i] Controller Venting and Combustion Air Design Guide OPENING OPENING Figure 2: All Combustion Air from Adjacent Indoor Spaces through Indoor Openings 2.3. Combustion Air from OUTSIDE the Building Outdoor combustion air shall be provided through opening(s) to the outdoors in accordance with the methods described below.
  • Page 11 Innovation Water Heaters – Edge [i] Controller Venting and Combustion Air Design Guide TOP OPENING Figure 3: All Combustion Air From Outdoors - Inlet Air From Ventilated Crawl Space and Outlet Air to Ventilated Attic Figure 4: All Combustion Air from Outdoors – Through Ventilated Attic TAG-0090_A •...

  • Page 12: One Permanent Opening Method

    Innovation Water Heaters – Edge [i] Controller Venting and Combustion Air Design Guide 2. When communicating with the outdoors through horizontal ducts, each opening shall have a minimum free area of 1 inch per 2,000 BTU/hr. (654 mm /0.59 kW) of total input rating of all appliances in the space (see Figure 5).
  • Page 13 Innovation Water Heaters – Edge [i] Controller Venting and Combustion Air Design Guide OPENING Figure 6: All Combustion Air from Outdoors Through Single Combustion Air Opening The following table lists the minimum required air openings in square inches (square centimeters) freely communicating with the outdoors for mechanical room combustion and ventilation air for each unit.

  • Page 14: Combustion Air Pipe Sizing

    Innovation Water Heaters – Edge [i] Controller Venting and Combustion Air Design Guide TABLE 2: Summary of Minimum Required Air Openings For Mechanical Room Combustion & Ventilation Air Two Horizontal Single Two Openings Two Direct or Model Ducts, Each Permanent from within the Vertical Duct having an...

  • Page 15: Common Combustion Air Systems

    Innovation Water Heaters – Edge [i] Controller Venting and Combustion Air Design Guide Rule-of-Thumb Examples – Standard North American units of measure: 1. A 40 foot length of combustion air pipe and 1 sharp 90° elbow plus two termination 90° elbows add up to 40 ft.
  • Page 16 Innovation Water Heaters – Edge [i] Controller Venting and Combustion Air Design Guide Figure 7a: Individual Vents – PREFERRED Installations NOTE 1: For high wind, wind blocked sites, a tee may be installed at the fresh air inlet. The leg of the tee connects to the combustion air intake.
  • Page 17 Innovation Water Heaters – Edge [i] Controller Venting and Combustion Air Design Guide VENT VENT NOTE 2 NOTE 2 Individually Sealed Combustion Manifolded Sealed Combustion Located on Different Wall From Exhaust Located on Different Wall From Exhaust VENT VENT VENT Manifolded Sealed Combustion Individual Sealed Combustion Manifolded Sealed Combustion Figure 7b: Individual Vents –...

  • Page 18: Vent System

    Innovation Water Heaters – Edge [i] Controller Venting and Combustion Air Design Guide 3. VENT SYSTEM The heater vent is fundamental for correct operation. Being a condensing heater, combustion gases are discharged at a very low temperature. It is therefore necessary for the venting system to be perfectly impermeable to combustion products condensate and to be made of corrosion resistant materials.

  • Page 19: Vent Installation

    Innovation Water Heaters – Edge [i] Controller Venting and Combustion Air Design Guide The vent system for Innovation-Edge heaters must be installed in accordance with AERCO’s installation instructions described in this guide. CAUTION For Category IV and II Heaters, the vents must be installed to prevent accumulation of condensate, and have means provided for drainage of condensate.
  • Page 20 Innovation Water Heaters – Edge [i] Controller Venting and Combustion Air Design Guide STRAIGHT VENT STARTER PIPE MINIMUM 24” (61 cm) WORM-DRIVE HOSE CLAMP EXHAUST CONNECTOR 1/4" CAP SCREW [4X] (6.4 mm) CLEAN BOTH SURFACES, THEN APPLY 1/4" FLAT WASHER [4X] (6.4 mm) HIGH TEMP SILICON SEALANT HERE...

  • Page 21: Installation Requirements For Venting Through A Wall

    Innovation Water Heaters – Edge [i] Controller Venting and Combustion Air Design Guide 3.2. Installation REQUIREMENTS for Venting Through a Wall The minimum distances from adjacent public walkways, adjacent buildings, operable windows and building openings shall not be less that those values specified in the National Fuel Gas Code, ANSI Z223.1 and/or CAN/CSA B149, Installation Codes.
  • Page 22 Innovation Water Heaters – Edge [i] Controller Venting and Combustion Air Design Guide Vent terminations must be at least 3 feet (0.9 m) from inside corners. Category II or IV must not terminate over public walkways or over areas Vent terminations must be where condensate or vapors could 4 feet (1.2 m) from below create a nuisance or hazard.

  • Page 23: Installation Requirements For Vertical Venting

    Innovation Water Heaters – Edge [i] Controller Venting and Combustion Air Design Guide 3.3. Installation REQUIREMENTS for Vertical Venting WARNING DO NOT INSULATE OR OTHERWISE WRAP VENT PIPE OR FITTINGS. FOLLOW THE VENT PIPE MANUFACTURERS INSTALLATION INSTRUCTIONS FOR VERTICAL VENTING. The vent termination must be located as follows (refer to Figure 10): a.

  • Page 24: Vent Pipe Sizing

    Innovation Water Heaters – Edge [i] Controller Venting and Combustion Air Design Guide 3.4. Vent Pipe Sizing The maximum length is the combined length of straight horizontal and vertical runs, and the equivalent straight length of fittings and transition pieces of pipe. The maximum equivalent lengths and minimum pipe diameters are given below in Table 4 for each heater.
  • Page 25 Innovation Water Heaters – Edge [i] Controller Venting and Combustion Air Design Guide REQUIRED APPROVED Figure 11a: Recommended Connections to Common Vent Breeching Interconnection of groups of units must never be accomplished via a “tee”. As shown in Figure 11b, change the direction with one of the mains and then connect the second three diameters (common section diameter) from this turn via a 45°...

  • Page 26: Common Vent Condensate Drainage

    Innovation Water Heaters – Edge [i] Controller Venting and Combustion Air Design Guide Figure 12: Transition Vent Sections The vent system should always be pitched up 1/4 inch per foot (21 mm/m) of run towards the vent termination (see Figure 13). This will enable condensate to drain back to the unit for disposal. Low spots in the vent must be avoided.

  • Page 27: Combustion Air Duct Pressure Drop Tables

    Innovation Water Heaters – Edge [i] Controller Venting and Combustion Air Design Guide 3.7. Combustion Air Duct Pressure Drop Tables The tables in this section list the pressure drop in sealed combustion air ducts for the Innovation- Edge models at various outside air temperatures and duct diameters. 3.7.1 Corrections For Altitude The table below lists correction factors for installation altitudes above sea level.

  • Page 28: Innovation 600N Combustion Air Duct Pressure Drop Tables

    Innovation Water Heaters – Edge [i] Controller Venting and Combustion Air Design Guide 3.7.2 Innovation 600N Combustion Air Duct Pressure Drop Tables • Values for Straight Run are equivalent feet per foot or meters per meter • Values for 90° Elbow, 45° Elbow, and Ent. Loss are equivalent feet (equivalent millimeters) TABLE 5: Innovation 600N MBTU (176 kW) Water Heaters Outside Air Temperature...
  • Page 29 Innovation Water Heaters – Edge [i] Controller Venting and Combustion Air Design Guide TABLE 5: Innovation 600N MBTU (176 kW) Water Heaters Outside Air Temperature Inlet Duct Duct -30 °F -15 °F 0 °F 20 °F 40 °F 60 °F 80 °F 100 °F 120 °F...
  • Page 30 Innovation Water Heaters – Edge [i] Controller Venting and Combustion Air Design Guide TAG-0090_A • GF-5056 • 2/20/2020 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 30 of 39...

  • Page 31: Innovation 800N Combustion Air Duct Pressure Drop Tables

    Innovation Water Heaters – Edge [i] Controller Venting and Combustion Air Design Guide 3.7.3 Innovation 800N Combustion Air Duct Pressure Drop Tables • Values for Straight Run are equivalent feet per foot or meters per meter • Values for 90° Elbow, 45° Elbow, and Ent. Loss are equivalent feet (equivalent millimeters) TABLE 6: Innovation 800N MBTU Water Heater Outside Air Temperature...
  • Page 32 Innovation Water Heaters – Edge [i] Controller Venting and Combustion Air Design Guide TABLE 6: Innovation 800N MBTU Water Heater – Continued Outside Air Temperature (°F) Inlet Duct Duct -30 °F -15 °F 0 °F 20 °F 40 °F 60 °F 80 °F 100 °F 120 °F...

  • Page 33: Innovation 1060N Combustion Air Duct Pressure Drop Tables

    Innovation Water Heaters – Edge [i] Controller Venting and Combustion Air Design Guide 3.7.4 Innovation 1060N Combustion Air Duct Pressure Drop Tables • Values for Straight Run are equivalent feet per foot or meters per meter • Values for 90° Elbow, 45° Elbow, and Ent. Loss are equivalent feet (equivalent millimeters) TABLE 7: Innovation 1060N MBTU Water Heater Heater Outside Air Temperature...
  • Page 34 Innovation Water Heaters – Edge [i] Controller Venting and Combustion Air Design Guide TABLE 7: Innovation 1060N MBTU Water Heater Heater – Continued Outside Air Temperature Inlet Duct Duct -30 °F -15 °F 0 °F 20 °F 40 °F 60 °F 80 °F 100 °F 120 °F...

  • Page 35: Innovation 1350Ncombustion Air Duct Pressure Drop Tables

    Innovation Water Heaters – Edge [i] Controller Venting and Combustion Air Design Guide 3.7.5 Innovation 1350NCombustion Air Duct Pressure Drop Tables • Values for Straight Run are equivalent feet per foot or meters per meter • Values for 90° Elbow, 45° Elbow, and Ent. Loss are equivalent feet (equivalent millimeters) TABLE 8: Innovation 1350N MBTU Water Heater Heater Outside Air Temperature...
  • Page 36 Innovation Water Heaters – Edge [i] Controller Venting and Combustion Air Design Guide TABLE 8: Innovation 1350N MBTU Water Heater Heater – Continued Outside Air Temperature Inlet Duct Duct -30 °F -15 °F 0 °F 20 °F 40 °F 60 °F 80 °F 100 °F 120 °F...

  • Page 37: Flue Vent Pressure Drop Tables

    Innovation Water Heaters – Edge [i] Controller Venting and Combustion Air Design Guide 3.8. Flue Vent Pressure Drop Tables The tables below list the pressure drop in flue vents in equivalent feet (eq. ft.) or equivalent meters (eq. m.) for single Innovation-Edge water heaters at various duct diameters. All values are based on the assumption of 140°F (60°C) Water Temperature and 70°F (21°C) Rise at Sea Level.
  • Page 38 Innovation Water Heaters – Edge [i] Controller Venting and Combustion Air Design Guide Example using standard North American units of measure: 1) An installer is trying to figure out if he can save some money by using a 4-inch vent (exhaust) design versus a 6-inch when installing a single Innovation 600N water heater.
  • Page 39 Innovation Water Heaters – Edge [i] Controller Venting and Combustion Air Design Guide Change Log: Date Description Changed by 9/4/2019 Rev A: Initial release Rev B: Added Section 3.7.1: Altitude Correction Table 2/20/2020 Modified Figure 10: Acceptable Combustion Air Inlet & Vent Outlet Configuration, in Section 3.3.

This manual is also suitable for:

Aerco inn 800nAerco inn 1060nAerco inn 1350n

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