5.3102.25 Installation of Lead—Lag Controls for Boilers

Topic: 
Hydronic Heating (Hot Water and Steam)
Subtopic: 
Equipment Installation
Desired Outcome: 
Minimize cyclic boiler operation, increase system efficiency and boiler life
TitleSpecification(s)Objective(s)
5.3102.25a
Equipment selection

Optimum combination of boiler sizes and firing rate turndown ratio will be determined to match the seasonal heating load profile of the installation (consider boilers of varying size)

Minimize number of firing cycles in periods of light heating load
5.3102.25b
Controls selection

Lead-lag system will be selected to properly match the requirements of the equipment selected above, in terms of number of boilers and firing rate turndown ratio

Improved system efficiency and boiler life
5.3102.25c
Equipment and controls installation

Boilers, burners, and control system will be installed in accordance with relevant manufacturer specifications and local codes and standards

Ensure proper operation of equipment
5.3102.25d
Equipment and controls commissioning

Burner fuel turndown ratios will be set up in accordance with equipment selection criteria above

Lead-lag system will be set up in accordance with manufacturer specifications and system designer requirements

Correct relationship between burner/boiler operating controls and modulating controls will be set to minimize cyclic operation using boiler manufacturer specifications where available

Maximize boiler life and system efficiency
5.3102.25e
Education

Completed work will be reviewed with the building/property management team and operations staff

Building/property management team and operations staff will be educated on the safe and efficient operation and maintenance requirements of the installed item

Ensure building/property management team and operations staff is informed of the safe, efficient operation and maintenance requirements of the installed item