7.8104.6 Recirculation System Temperature Modulation Controls

Topic: 
Water Heating
Subtopic: 
Distribution
Desired Outcome: 
Safe and reliable hot water delivery system that meets the needs of occupant/building management/building operations staff at the lowest possible life cycle cost
TitleSpecification(s)Objective(s)
7.8104.6a
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 decommissioning 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

7.8104.6b
Electric safety

Electric circuit will be disconnected before removing or installing controls

Ensure the health and safety of the worker/occupant/building management/building operations staff

7.8104.6c
Removal of controls

Decommissioned controls will be removed or labeled as abandoned

Allow system to be maintained

7.8104.6d
Mounting

Controls will be mounted on a stable and sturdy surface

Controls will be installed in accordance with manufacturer specifications

Ensure safe and effective installation

7.8104.6e
Identification

Controls will be clearly identified or labeled to identify associated equipment ("this device controls boiler #2," etc)

Location and purpose of controls for water heating equipment (e.g., boiler, storage type water heater) will be clearly identified or labeled

Allow system to be maintained

7.8104.6f
Integration with other system controls

Purpose and function of controls integral to water heating equipment (including input data from sensors) will be identified before installing additional controls

Existing hot water supply set points will be logged

Function and set point of anti-scald mixing valve will be determined

Location and interaction of sensors and controls will be sketched or described

Location of sensors and interaction of final control configuration will be sketched or described

Maintain the integrity of the hot water system and components

7.8104.6g
Installation

Sensors and controls will be installed in accordance with manufacturer specifications

When controls are using low voltage, the low voltage and line voltage wiring will be separated

Controls, sensors, wiring, and other components will be installed in a manner that does not expose occupant/ building operations staff/property manager to hazardous conditions

Controls, sensors, wiring, and other components will be installed in a manner that does not pose an unnecessary risk to the integrity of the installation (e.g., wiring, sensors)

Allow proper and effective function of the controls

Ensure long-term safety and durability of components

7.8104.6h
Mounting

Controls will be mounted on a stable and sturdy surface

Controls will be installed in accordance with manufacturer specifications

Ensure safe and effective installation

7.8104.6i
Site security

All trash and unused materials will be removed from work site daily

Protect the occupant from exposure to potential hazards

7.8104.6j
Commissioning

Modulation of hot water supply temperature will be verified in accordance with settings

Proper operation of anti-scald mixing valve, if present, will be verified

Transmission of monitored data (or data logging) will be verified in accordance with settings

Operator/owner manual will be updated or completed with site-specific data

Ensure proper and effective function of the controls

Allow for long-term maintenance or monitoring of the system

7.8104.6k
Education

Operator/owner manual will be provided

Site staff will be educated

Manual and education will include:

  • Purpose of control system
  • How to identify expected control modes
  • How to identify system or component failure modes
  • Which failures to fix
  • Which failures to have a plumber fix
  • Which failures require a different specialist
  • Contact information for controls installer/manufacturer

Educate occupant/building operations staff/property manager about the safe, efficient operation and maintenance of the system