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Commissioning the System. Commissioning. Use Service form 1A Proof of performance Speeds up Tech support Reduces recalls. Balancing Orifices. Works with all plenums 15, 35, 50% Easy to re-balance system. Airflow Checks. U tube or Slope Gauge – best way Delta T in cooling 25-28 deg. - PowerPoint PPT Presentation
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Commissioning the System
Commissioning the System
• Use Service form 1A
• Proof of performance
• Speeds up Tech support
• Reduces recalls
CommissioningCommissioning
Balancing OrificesBalancing Orifices
• Works with all plenums
• 15, 35, 50%
• Easy to re-balance system
Airflow ChecksAirflow Checks
• U tube or Slope Gauge –
best way
• Delta T in cooling 25-28 deg.
• Electric Heat Delta T check
• Motor Amperage
Fan Curve ESP-4860D
Upper Static Limit
Lower Static Limit
1.000
1.100
1.200
1.300
1.400
1.500
1.600
1.700
1.800
1.900
2.000
2.100
2.200
2.300
500 600 700 800 900 1000 1100 1200 1300 1400 1500
Air Volume (CFM)
Ex
tern
al S
tati
c P
res
su
re (
in w
g)
Curve 1
Curve 2
Curve 3
Static Pressure Static Pressure Affects on Fan Affects on Fan PerformancePerformance
Electric Heat AirflowElectric Heat Airflow
• Convert KW to BTU (3413 X KW = BTU)
•DeRate for 208 (.8)
• Cfm’s x1.08 x’s Temp. Diff. = BTU
• Compare to unit data
Winterizing Cooling Winterizing Cooling Only UnitsOnly Units
• Winter supply shut-offs
• Seal the return
• Winterize condensate
• Shut off breaker