5.3103.4 Distribution Load Balancing

Topic: 
Hydronic Heating (Hot Water and Steam)
Subtopic: 
Piping (Distribution Installation)
Desired Outcome: 
Even heating distribution
For supporting material, see Referenced Standards.
TitleSpecification(s)Objective(s)
5.3103.4a
Evaluate balancing options

Use of automatic or manual balancing valves will be evaluated in terms of life cycle cost (installation labor, hardware, labor to balance, and impact on energy consumption)

Determine a balancing strategy that ensures balance throughout peak heating and shoulder seasons

5.3103.4b
Check for presence of asbestos-containing materials (ACMs)

Potential ACMs will be handled in accordance with SWS 2.0110.2 Potential Asbestos-Containing Materials

Ensure a safe work environment

5.3103.4c
Installing balancing devices

Prior to installation of balancing devices, the distribution will be cleaned of any debris that can clog the new devices

Balancing devices in building will be repaired or replaced by a contractor to ensure a balanced system

Flow direction will be checked to ensure proper orientation of balancing device

System will be refilled and air will be eliminated

Ensure even heating distribution during peak and shoulder months

5.3103.4d
Testing and verification

Contractor will confirm performance to manufacturer specifications

Water flow will be measured in accordance with ANSI ANSI American National Standards Institute, www.ansi.org / ACCA ACCA Air Conditioning Contractors of America, www.acca.org Standard 5 or ANSI ANSI American National Standards Institute, www.ansi.org / ASHRAE ASHRAE American Society of Heating, Refrigerating and Air-Conditioning Engineers, www.ashrae.org Standard 111 and adjusted to meet design requirements

Ensure system operates safely and efficiently

5.3103.4e
Reinsulate area

Where insulation was removed, valve will be reinsulated with new insulation to IECC IECC International Energy Conservation Code and ASHRAE ASHRAE American Society of Heating, Refrigerating and Air-Conditioning Engineers, www.ashrae.org 90.1, at a minimum

Reduce energy loss

Maintain safe surface temperature

5.3103.4f
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