Balancing The System For Piping Head Loss - Hussmann Proto-Aire Installation Manual

Balancing the System for Piping Head Loss

If the store were designed so that each Protocol™ condenser was identical; the flow rate
(GPM) for each condenser could be set from a simple table. Balancing Head Loss for
Length of Piping Run could be equated to Degrees of Closure on each Circuit Setter.
By accounting for Head Loss and Flow Rate (GPM) for each Protocol™ in a system, a
Preset Value for each Protocol™ unit's Circuit Setter may be established.
Page 25 is a Preset Worksheet, which allows the installer to estimate the adjustments
required for the Circuit Setters. It is designed to provide a starting place. Since each
installation is unique, all Protocol™ units must be carefully monitored during store startup.
Once all Protocol™ units are running, the water loop must be checked, and final balancing
performed.
Table 1 shows a proportional Closure for the Circuit Setter based on Protocol™ GPM
requirements.
GPM
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
Table 1
° Closure GPM ° Closure
0 42
0 41
1 40
1 39
2 38
2 37
3 36
3 35
4 34
4 33
5 32
5 31
6 30
6 29
7 28
7 27
55
Protocol™ Installation and
GPM ° Closure
8 26 16
8 25 16
9 24 17
9 23 17
10 22 18
10 21 18
11 20 19
11 19 19
12 18 20
12 17 20
13 16 21
13 15 21
14 14 22
14 13 22
15 12 23
15
Service Manual