5.3104.7 Combined Heat and Domestic Hot Water Systems Tuneup (Includes Hot Water)

Topic: 
Hydronic Heating (Hot Water and Steam)
Subtopic: 
Equipment Maintenance, Testing, and Repair
Desired Outcome: 
Increased efficiency of existing system
TitleSpecification(s)Objective(s)
5.3104.7a
Assessment

Field and site conditions will be verified to determine if scope of work is applicable

Assessment will determine whether higher efficient system is possible

Ensure optimal system is applied
5.3104.7b
Tuneup

Heat exchanger will be flushed and cleaned of scale

Performance of heat exchanger will be in accordance with manufacturer specifications and confirmed by a contractor

Intent of control strategy will be confirmed by a contractor:

  • Winter and summer modes/operation
  • Domestic hot water ( DHW DHW Domestic hot water ) priority
  • Lead-lag/sequencing
  • Modulation
  • Pumps

Burner will be tuned for optimal combustion efficiency

Also refer to SWS 5.3104.14 Tune-up and Upgrades

Ensure optimal operation of existing system
5.3104.7c
Testing

Heating and DHW DHW Domestic hot water production, distribution system, and delivery temperature will be tested for proper and safe operation

Combustion efficiency will be verified using combustion analyzer for all fuel types, and if applicable, at multiple firing rates

Ensure system operates safely and efficiently
5.3104.7d
Education

Property manager will be educated on proper operation and maintenance

Maintain optimal performance