Liberty Pumps Ascent II User Manual
Page 7
©Copyright 2013 Liberty Pumps Inc. All rights reserved.
7
3-5-3
If you wish the unit to pump vertically and horizontally you may calculate 3 feet of vertical lift is equivalent to 30 feet of “horizontal”
run. Each bend or change of direction gives a pressure drop, which must be calculated into the total head of the unit. As an
estimate, reduce discharge height by 3 feet for each 90° bend.
For example: 1” SCH. 40 PVC pipe is used for the discharge and runs horizontally for 1’; then turns 90° and rises 5’ vertical.
Then it travels horizontal with another 90° turn (3 turns in total) and connects with the soil-stack. See illustration below.
Calculations:
Total vertical lift 5’ 5’ vertical
Total Horizontal run 43’ 4.3’ vertical
Total of three 90° elbows 9’ vertical
Now add the three together we get 18.3’ of vertical lift. Reading the
performance curve below indicates the application would result in a flow
rate of 23 gal/min(60Hz).
Tub / Shower should be installed
on a riser to accommodate the P trap
All fixtures must be properly vented