User Guide

TruFLOW_ExtKit_IS_8-06, Copyright © 2006 Uponor, Printed in the United States
Uponor
, Inc. Uponor Ltd.
5925 148th Street West 655 Park Street
A
pple
V
alley
, MN 55
1
24
Regina, SK S4N 5N1
T
el
:
(
800
)
32
1
-
4739
T
el [phone]
Fax:
(
952
)
891-1409 Fax [phone]
Web: www.uponor-usa.com Web: www.uponor.ca
E-mail: [e-mail] E-mail: [e-mail]
Valve Setting
To balance and preset the manifold
assembly
, proceed as follows.
1. Using the chrome allen key
(6mm), turn main valve clockwise
until it stops.
2. Using the small brass key, turn
memory stop clockwise until it stops.
3. Using the chrome allen key, turn
the main valve counter-clockwise
t
o set the loop flow or balancing
turns for that loop.
4. Using the small brass key, turn
memory stop counter-clockwise
until it stops.
Balancing Chart
How to Determine Balancing Turns
T
o balance the manifold correctly, determine the flow (gpm)
and pressure drop (ft/hd) for each loop on the manifold.
To find the required turns, follow directions below:
1
. On the manifold to be balanced, find the loop with the
highest pressure drop (ft/hd). This loop does not need
any balancing, and will be fully open (4.25 turns from
c
losed position).
2
. To balance all other loops on the manifold, find the
pressure drop (ft/hd) for each loop and subtract from
the loop with the highest pressure drop (same as the
loop figured in step 1). The difference is the delta
ft/hd. Use this number on the balancing chart to find
the required number of balancing turns.
Example: If the highest pressure-drop loop has 7 ft/hd
and the loop that needs to be balanced has 5 ft/hd.
Subtract 5 from 7 for a difference of 2 delta ft/hd.
3. Locate the delta ft/hd number on the vertical scale
located on the left side of the balancing chart.
4. Locate the gallons per minute (gpm) on the horizontal
scale at the bottom of the balancing chart.
5. Locate where the delta ft/hd and gpm intersect on
the chart.
6. The closest diagonal line to this intersection represents
the number of full valve turns from closed to open
to accurately balance the loop. If the intersection falls
between two diagonal lines, estimate the distance
between the lines and adjust the turns accordingly.
Full Turns from Closed Position
Flow (gpm)
Delta Pressure Drop (∆ ft/hd)