5.3102.27 Burner Modulation Controls (Does not Include Burner Replacement)

Topic: 
Hydronic Heating (Hot Water and Steam)
Subtopic: 
Equipment Installation
Desired Outcome: 
Optimized efficiency and prevention of short cycling
For supporting material, see Referenced Standards.
TitleSpecification(s)Objective(s)
5.3102.27a
Assessment

Existing boiler, burner, gas valve, and gas pressure booster will be capable for modulation

Compatibility between specified controls and existing burner will be confirmed

Remaining existing controls will be confirmed as installed correctly

Current settings will be documented

Document the status of existing controls

5.3102.27b
Repair

Existing installation will be corrected if settings do not match specified scope of work

Appropriate repairs will be made to the following components in accordance with scope of work and manufacturer specifications:

  • Linkage
  • Gas/oil valves
  • Air damper on burner
  • Combustion controls

Ensure boiler modulates to optimize efficiency

Reduce short cycling

5.3102.27c
Replacement of modulation control

Existing controls will be removed

All new pressure controls will be free of mercury

New controls will be installed in accordance with manufacturer specifications

New control will be set to temperature settings (hot water boiler) and pressure settings (steam boiler) as stated on scope of work

Applicable burner linkages, nozzles, cams, oil pump pressure setting, and gas valve will be adjusted to specified burner firing range

Ensure boiler modulates to optimize efficiency

Reduce short cycling

5.3102.27d
Disposal of mercury-containing modulation control

Removed modulation control will be disposed of in accordance with EPA EPA U.S. Environmental Protection Agency, www.epa.gov regulation

Prevent mercury from entering the environment

5.3102.27e
Upgrade/install modulation control

All new pressure controls will be free of mercury

New controls will be installed in accordance with manufacturer specifications

New control will be electrically connected to burner panel and supplied with power in accordance with manufacturer specifications

New control will be set to temperature settings (hot water boiler) and pressure settings (steam boiler) as stated on scope of work

Applicable burner linkages, nozzles, cams, oil pump pressure setting, and gas valve will be adjusted to specified burner firing range

Ensure boiler modulates to optimize efficiency

Reduce short cycling

5.3102.27f
Testing

For steam boiler, pressure gauges will be checked for accuracy

For hot water boiler, pressure and temperature gauges will be checked for accuracy

Contractor will observe and confirm boiler operation over a minimum of three cycles

Ensure proper installation

Ensure proper operation

5.3102.27g
Education

Property manager will be educated on the operation and purpose of controls and settings

Ensure proper use of controls

Maintain optimal settings to ensure modulation occurs