Table of Contents
Advertisement
Start-Up
Maintenance
For a typical HVAC environment - especially with upstream
filtration - there should be little to no required
maintenance. In extreme cases or for mishaps (bearing
grease in the taps for example), the flow meter is easily
cleanable. The fan inlet airflow measuring system is
extremely simple: a few pressure taps, a few fittings, and
some tubing. Although unlikely, if any tap were to get
clogged, simply disconnect each side of the transmitter
and blast air in a reverse direction through the system.
Table 15. Constant K Factors
Fan Size (inches)/Type
10.50 AF direct-drive plenum
12 AF direct-drive plenum
13.50 AF direct-drive plenum
15 AF direct-drive plenum
16 AF direct-drive plenum
18 AF direct-drive plenum
20 AF direct-drive plenum
22 AF direct-drive plenum
24 AF direct-drive plenum
27 AF direct-drive plenum
30 AF direct-drive plenum
15.70 motorized impeller
17.70 motorized impeller
19.70 motorized impeller
22.00 motorized impeller
24.80 motorized impeller
Note: This table to be used for the updated tap design - mid-2014 and beyond. Refer to prior editions of this publication for the previous design.
70
Constant K Factor
The constant K factor is unique for each fan and is
primarily a function of the area and other geometric
properties of the fan inlet. Pre-engineered factors are
available from the factory for fan types where the airflow
measurement system is available.
Fan Class
Any
10 TF, 10 TR, 10 UF, 10 UR
Any
12 TF, 12 TR, 12 UF, 12 UR
Any
13 TF, 13 TR, 13 UF, 13 UR
Any
15 TF, 15 TR, 15 UF, 15 UR
Any
16 TF, 16 TR, 16 UF, 16 UR
Any
Any
Any
Any
Any
Any
Any
Any
Any
Any
Any
Fan Name
18 TF, 18 TR
20 TF, 20 TR
22 TF, 22 TR
24 TF, 24 TR
27 TF, 27 TR
30 TF, 30 TR
15VP
17VP
19VP
22VP
24VP
K-Factor
576
945
965
1227
1519
1822
2186
2714
3285
3998
4945
1747
2231
2612
3233
4071
CLCH-SVX013B-EN
Hide quick links:
Advertisement
Table of Contents
