7.8102.2 Storage-Type Appliance

Topic: 
Water Heating
Subtopic: 
Installation and Replacement
Desired Outcome: 
Safe and reliable hot water source provided that meets occupant needs at lowest possible cost of ownership
Note: 
The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail.
TitleSpecification(s)Objective(s)
7.8102.2a
Hazardous material removal

Health concerns in the removal and replacement of equipment (e.g., asbestos, other hazardous materials) will be identified

Written notification will be provided to occupants of the discovery of hazardous material, including contact information for regional EPA EPA U.S. Environmental Protection Agency, www.epa.gov asbestos coordinator

Occupant will be asked to contract with an EPA EPA U.S. Environmental Protection Agency, www.epa.gov -certified asbestos contractor to conduct abatement before equipment removal and replacement (occupant is responsible for abatement or remediation)

Remediate health hazards using EPA EPA U.S. Environmental Protection Agency, www.epa.gov -certified contractors

7.8102.2b
Equipment removal

Accepted industry procedures and practices will be followed to:

  • Remove old water heater and associated components in accordance with IRC IRC International Residential Code or authority having jurisdiction
  • Seal any unused chimney openings and penetrations in accordance with IRC IRC International Residential Code or authority having jurisdiction
  • Remove unused oil tank, lines, valves, and associated equipment in accordance with IRC IRC International Residential Code or authority having jurisdiction

All work shall be completed by a licensed plumbing professional where required by the authority having jurisdiction and installed to industry-accepted standards

Ensure the safety of the workers and occupants

Preserve integrity of the building

Remove old equipment in a timely and efficient manner

7.8102.2c
New equipment installation

New water heater and associated components will be installed to accepted industry standards, in accordance with the IRC IRC International Residential Code and manufacturer specifications

The system will be installed to be freeze resistant

Any existing water leaks will be repaired before installation begins

Any penetrations to the exterior of the home created by the installation of the equipment will be sealed

Ensure the safety of the workers and occupants

Preserve integrity of the building

Remove old equipment in a timely and efficient manner

7.8102.2d
Emergency drain pan

An emergency drain pan and drain line shall be installed in accordance with the IRC IRC International Residential Code

Collect and safely dispose of water escaping from the storage tank

7.8102.2e
Expansion tank

Expansion tanks will be installed where required and in accordance with the AHJ AHJ Authority having jurisdiction

Protect the storage tank from expansion

7.8102.2f
Temperature and pressure relief valve

Correct temperature and pressure relief valve will be installed in compliance with IRC IRC International Residential Code and according to manufacturer specifications

Temperature and pressure relief valve discharge tube will be installed in accordance with IRC IRC International Residential Code

Discharge excessive energy (pressure or temperature) from storage tank to safe location

7.8102.2g
Dielectric unions

Dielectric unions will be installed in accordance with the IRC IRC International Residential Code , authority having jurisdiction, and according to manufacturer specifications

Break the stray voltage electrical circuit through the storage tank

7.8102.2h
Backflow prevention

Backflow prevention will be installed in accordance with manufacturer specifications and all applicable codes

Protect water supply from contamination

7.8102.2i
Thermal efficiency

If additional tank insulation is installed, it will be rated a minimum of R-11 and will be installed to manufacturer specifications

If additional insulation is installed, it will be installed based on fuel type, making sure not to obstruct draft diverter, pressure relief valve, thermostats,    hi-limit switch, plumbing pipes or elements, and thermostat access plates 

The first 6' of inlet and outlet piping will be insulated in accordance with manufacturer specifications 

Combustible pipe insulation must maintain a minimum clearance of 6" from gas water heater draft hood and/or single wall metal pipe. Clearance from vent such as "B" vent should be maintained per vent manufacturer's specifications 

Heat traps will be installed on the inlet and outlet piping where not provided by manufacturer 
 

Reduce standby loss Standby loss Heat loss through the outer part of a water heater. Energy that is used even when a device is turned off from near tank piping and storage tank

Ensure insulation does not make contact with flue gas venting

7.8102.2j
Fuel supply

Electric or fossil fuel supply components will be installed to accepted industry standards as per NFPA NFPA National Fire Protection Association, www.nfpa.org 31 and 54, or NFPA NFPA National Fire Protection Association, www.nfpa.org 70 National Electric Code ( NEC NEC National Electrical Code ) for electric components, or authority having jurisdiction

Provide sufficient fuel to the water heater, burner, or element

7.8102.2k
Discharge temperature

Discharge temperature will be set not to exceed 120° or as prescribed by local code

Ensure safe hot water supply temperature to fixtures

7.8102.2l
Commissioning of system

The following will be checked once the system has been filled and purged:

  • Safety controls
  • Combustion safety and efficiency
  • Operational controls
  • Fuel and water leaks
  • Local code requirements

Commissioning will be in compliance with manufacturer specifications and relevant industry standards

Ensure safe system function

Keep cost of ownership as low as possible

7.8102.2m
Occupant safety

Carbon monoxide ( CO CO Carbon monoxide ) alarms will be installed in each dwelling in accordance with ASHRAE ASHRAE American Society of Heating, Refrigerating and Air-Conditioning Engineers, www.ashrae.org 62.2 and authority having local jurisdiction

Occupant will be provided information regarding the health effects and risk of high CO CO Carbon monoxide concentrations as well as a list of monitors that can provide more detail regarding CO CO Carbon monoxide levels

Ensure occupant life safety; CO CO Carbon monoxide alarms are designed to detect levels at which occupants might become unable to evacuate

7.8102.2n
Occupant education

Completed work will be reviewed

Occupants will be educated on the safe and efficient operation and maintenance of the system, including:

  • Adjustment of water temperature and target temperature in accordance with local code
  • Periodic drain and flush
  • Expansion tank and backflow preventer (no occupant maintenance required)
  • Periodic inspection, maintenance, or replacement

Ensure occupant is informed of the safe, efficient operation and maintenance of the system

TitleSpecification(s)Objective(s)
7.8102.2a
Hazardous material removal

Health concerns in the removal and replacement of equipment (e.g., asbestos, other hazardous materials) will be identified

Written notification will be provided to occupants of the discovery of hazardous material, including contact information for regional EPA EPA U.S. Environmental Protection Agency, www.epa.gov asbestos coordinator

Occupant will be asked to contract with an EPA EPA U.S. Environmental Protection Agency, www.epa.gov -certified asbestos contractor to conduct abatement before equipment removal and replacement (occupant is responsible for abatement or remediation)

Remediate health hazards using EPA EPA U.S. Environmental Protection Agency, www.epa.gov - certified contractors

7.8102.2b
Equipment removal

Accepted industry procedures and practices will be followed to:

  • Remove old water heater and associated components in accordance with IRC IRC International Residential Code or authority having jurisdiction
  • Seal any unused chimney openings and penetrations in accordance with IRC IRC International Residential Code or authority having jurisdiction
  • Remove unused oil tank, lines, valves, and associated equipment in accordance with IRC IRC International Residential Code or authority having jurisdiction

All work shall be completed by a licensed plumbing professional where required by the authority having jurisdiction and installed to industry-accepted standards

Ensure the safety of the workers and occupants

Preserve integrity of the building

Remove old equipment in a timely and efficient manner

7.8102.2c
New equipment installation

New water heater and associated components will be installed by a licensed contractor to accepted industry standards, in accordance with the IRC IRC International Residential Code and manufacturer specifications

The system will be installed to be freeze resistant

Any existing water leaks will be repaired before installation begins

Any penetrations to the exterior of the home created by the installation of the equipment will be sealed

Ensure the safety of the workers and occupants

Preserve integrity of the building

Remove old equipment in a timely and efficient manner

7.8102.2d
Emergency drain pan

An emergency drain pan will be installed with sides that extend a minimum of 4" above floor if leakage would cause damage to the home and in accordance with IRC IRC International Residential Code

A ¾" drain line or larger will be connected to tapping on pan and terminated in accordance with IRC IRC International Residential Code

Collect and safely dispose of water escaping from the storage tank

7.8102.2e
Expansion tank

Expansion tanks will be installed where required and in accordance with the AHJ AHJ Authority having jurisdiction

Protect the storage tank from expansion

7.8102.2f
Temperature and pressure relief valve

Correct temperature and pressure relief valve will be installed in compliance with IRC IRC International Residential Code and according to manufacturer specifications

Temperature and pressure relief valve discharge tube will be installed in accordance with IRC IRC International Residential Code

Discharge excessive energy (pressure or temperature) from storage tank to safe location

7.8102.2g
Dielectric unions

Dielectric unions will be installed in accordance with the IRC IRC International Residential Code , authority having jurisdiction, and according to manufacturer specifications

Break the stray voltage electrical circuit through the storage tank

7.8102.2h
Backflow prevention

Backflow prevention will be installed in accordance with manufacturer specifications and all applicable codes

Protect water supply from contamination

7.8102.2i
Thermal efficiency

If additional tank insulation is installed, it will be rated a minimum of R-11 and will be installed to manufacturer specifications

If additional insulation is installed, it will be installed based on fuel type, making sure not to obstruct draft diverter, pressure relief valve, thermostats, hi-limit switch Hi-limit switch A protective electronic switch that keeps a burner from continuing to operate and damage the appliance , plumbing pipes or elements, and thermostat access plates

The first 6' of inlet and outlet piping will be insulated in accordance with manufacturer specifications

Combustible pipe insulation must maintain a minimum clearance of  6'' from gas water heater draft hood and/or single wall metal pipe. Clearance from vent such as "B" vent should be maintained per vent manufacturer's specifications

Heat traps will be installed on the inlet and outlet piping where not provided by manufacturer

Reduce standby loss Standby loss Heat loss through the outer part of a water heater. Energy that is used even when a device is turned off from near tank piping and storage tank

Ensure insulation does not make contact with flue gas venting

7.8102.2j
Fuel supply

Electric or fossil fuel supply components will be installed to accepted industry standards as per NFPA NFPA National Fire Protection Association, www.nfpa.org 31 and 54, or NFPA NFPA National Fire Protection Association, www.nfpa.org 70 National Electric Code ( NEC NEC National Electrical Code ) for electric components, or authority having jurisdiction

Provide sufficient fuel to the water heater, burner, or element

7.8102.2k
Discharge temperature

Discharge temperature will be set not to exceed 120° or as prescribed by local code

Ensure safe hot water supply temperature to fixtures

7.8102.2l
Commissioning of system

The following will be checked once the system has been filled and purged:

  • Safety controls
  • Combustion safety and efficiency
  • Operational controls
  • Fuel and water leaks
  • Local code requirements

Commissioning will be in compliance with manufacturer specifications and relevant industry standards

Ensure safe system function

Keep cost of ownership as low as possible

7.8102.2m
Occupant safety

All homes will have a functioning CO CO Carbon monoxide alarm

If determined to be more than 5 years old, CO CO Carbon monoxide detector/alarm will be replaced

If CO CO Carbon monoxide levels in interior living spaces exceed outdoor levels, potential sources will be investigated and appropriate action taken to reduce them (e.g., have a qualified professional tune, repair, or replace improperly operating combustion appliances; apply weather stripping or conduct air sealing between the garage or crawl space and the home)

Ensure occupant life safety; CO CO Carbon monoxide alarms are designed to detect levels at which occupants might become unable to evacuate

7.8102.2n
Occupant education

Completed work will be reviewed

Occupants will be educated on the safe and efficient operation and maintenance of the system, including:

  • Adjustment of water temperature and target temperature in accordance with local code
  • Periodic drain and flush
  • Expansion tank and backflow preventer (no occupant maintenance required)
  • Periodic inspection, maintenance, or replacement

Ensure occupant is informed of the safe, efficient operation and maintenance of the system