PKGP-PRC001-EN
21
Performance
Data (12½ - 20 Tons)
*Indicates both downflow and horizontal units.
Table PD-13 — Static Pressure Drops Through Accessories (Inches Water Column)
Economizer with Electric Heater
OA/RA Dampers
1
Accessory (kW)
2
Unit Standard 2 Inch
Tons Model No. CFM Filters
3
Pleated Filters
4
100% OA 100% RA 5-12 14-23 36 54 72
4000 0.05 0.08 0.20 0.02 — 0.03 0.03 0.04 —
12½ WC*150B 5000 0.07 0.11 0.26 0.03 — 0.04 0.05 0.06 —
6000 0.11 0.15 0.35 0.04 — 0.06 0.07 0.09 —
4800 0.07 0.10 0.24 0.03 — 0.04 0.04 0.05 —
15 WC*180B 6000 0.11 0.15 0.35 0.04 — 0.06 0.07 0.08 —
7200 0.15 0.19 0.42 0.05 — 0.09 0.10 0.12 —
6400 0.07 0.11 0.22 0.04 — — 0.06 0.08 0.09
WCD240B 8000 0.11 0.15 0.31 0.05 — — 0.10 0.12 0.14
9600 0.16 0.02 0.44 0.07 — — 0.14 0.17 0.20
20 6400 0.06 0.01 0.22 0.04 — — 0.06 0.08 0.09
WCH240B 8000 0.09 0.13 0.31 0.05 — — 0.10 0.12 0.14
9600 0.13 0.17 0.44 0.07 — — 0.14 0.17 0.20
Notes:
1. OA = Outside Air and RA = Return Air.
2. Nominal KW ratings at 240, 480, 600 volts.
3. Tested with:2" filters 12½-20 tons.
4. Difference in pressure drop should be considered when utilizing optional 2” pleated filters.
