Page 87 - HVAC Pump Handbook

Rishel_CH03.qxd 20/4/06 5:35 PM Page 84

Piping System Friction

Other coils

Pump discharge fittings 338' E Pump head Chiller loss F G 43 Expansion tank pressure 23 ft. (10 psig) b. Hydraulic gradient vertical development

D 258 Pump suction fittings Coil #1
342 C 262 23
400 350 300 278 250 200 System head - ft. 150 100 B 50 A 0
Pump shut-off head 365 F7. (158 psig)

Expansion tank, 10 psig Coils Chiller bypass with automatic control valve. Two-way control valves Variable speed primary pumps on chiller discharge HVAC system for a vertical building. (From: Patterson Pump Company HVAC Pumps and Systems Manual, 2004.)

a. Vertical building development
23' B C
A

Coil no.1 OP Chiller Chiller

43' G F D

E C
Figure 3.14

84

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