5.3003.3 Evaluating Air Flow

Topic: 
Forced Air
Subtopic: 
System Assessment and Maintenance
Desired Outcome: 
Air flow is properly tested
Note: 
The authority having jurisdiction may require that a licensed professional perform certain tasks outlined in this detail.
TitleSpecification(s)Objective(s)
5.3003.3a
Total air flow

See redline change(s)

Total system air flow will be measured by:

  • Temperature rise
  • Flow plate
  • Fan depressurization device (e.g., Duct Blaster, DucTester)

Ensure equipment operates as designed

Ensure equipment operates efficiently

Ensure equipment provides comfort

Ensure equipment operates safely

Ensure equipment is durable

5.3003.3b
External static pressure

External static pressure will be in accordance with manufacturer specifications

Ensure equipment operates as designed

Ensure equipment operates efficiently

Ensure equipment provides comfort

Ensure equipment operates safely

Ensure equipment is durable

5.3003.3c
Pressure

Pressure drop across cooling coils will be in accordance with manufacturer specifications

Ensure equipment operates as designed

Ensure equipment operates efficiently

Ensure equipment provides comfort

Ensure equipment operates safely

Ensure equipment is durable

5.3003.3d
Pressure drop: filter

Pressure drop across filter will be in accordance with manufacturer specifications

Ensure equipment operates as designed

Ensure equipment operates efficiently

Ensure equipment provides comfort

Ensure equipment operates safely

Ensure equipment is durable

5.3003.3e
Balancing room flow: new ductwork

Air flow will be measured at each register to ensure proper air flow delivery

Ensure equipment operates as designed

Ensure equipment operates efficiently

Ensure equipment provides comfort

Ensure equipment operates safely

Ensure equipment is durable

5.3003.3f
Supply wet bulb and dry bulb

Supply wet bulb and dry bulb air temperatures will be recorded

Ensure equipment operates as designed

Ensure equipment operates efficiently

Ensure equipment provides comfort

Ensure equipment operates safely

Ensure equipment is durable

5.3003.3g
Return wet bulb and dry bulb

Return wet bulb and dry bulb air temperatures will be recorded

Ensure equipment operates as designed

Ensure equipment operates efficiently

Ensure equipment provides comfort

Ensure equipment operates safely

Ensure equipment is durable

5.3003.3h
Temperature rise: gas and oil furnaces only

Temperature rise between the supply and return will be in accordance with manufacturer specifications

Ensure equipment operates as designed

Ensure equipment operates efficiently

Ensure equipment provides comfort

Ensure equipment operates safely

Ensure equipment is durable

TitleSpecification(s)Objective(s)
5.3003.3a
Total air flow

Total system air flow will be measured by:

  • Temperature rise
  • Flow plate
  • Fan depressurization device (e.g., Duct Blaster, DucTester)

Ensure equipment:

  • Operates as designed
  • Operates efficiently
  • Provides comfort
  • Operates safely
  • Is durable
5.3003.3b
External static pressure

External static pressure will be in accordance with manufacturer specifications

Ensure equipment:

  • Operates as designed
  • Operates efficiently
  • Provides comfort
  • Operates safely
  • Is durable
5.3003.3c
Pressure

Pressure drop across cooling coils will be in accordance with manufacturer specifications

Ensure equipment:

  • Operates as designed
  • Operates efficiently
  • Provides comfort
  • Operates safely
  • Is durable
5.3003.3d
Pressure drop: filter

Pressure drop across filter will be in accordance with manufacturer specifications

Ensure equipment:

  • Operates as designed
  • Operates efficiently
  • Provides comfort
  • Operates safely
  • Is durable
5.3003.3e
Balancing room flow: new ductwork

Air flow will be measured at each register to ensure proper air flow delivery

Ensure equipment:

  • Operates as designed
  • Operates efficiently
  • Provides comfort
  • Operates safely
  • Is durable
5.3003.3f
Supply wet bulb and dry bulb

Supply wet bulb and dry bulb air temperatures will be recorded

Ensure equipment:

  • Operates as designed
  • Operates efficiently
  • Provides comfort
  • Operates safely
  • Is durable
5.3003.3g
Return wet bulb and dry bulb

Return wet bulb and dry bulb air temperatures will be recorded

Ensure equipment:

  • Operates as designed
  • Operates efficiently
  • Provides comfort
  • Operates safely
  • Is durable
5.3003.3h
Temperature rise: gas and oil furnaces only

Temperature rise between the supply and return will be in accordance with manufacturer specifications

Ensure equipment:

  • Operates as designed
  • Operates efficiently
  • Provides comfort
  • Operates safely
  • Is durable