®
29
APPENDIX C
—
Reference Tables & Figures
Obstacle Clearances Needed
# of Collectors from
Fixed Collector:
Permissible Obstacle
Clearance (in):
1
1/4
2
1/2
3
3/4
4
1
5
1
-
1/4
6
1
-
1/2
7
1
-
3/4
8
2
Table 3 | Obstacle Clearance
Under normal movement of a SunSaver
®
bank, each collector will have an
incremental growth and contraction factor of 1/4” for each collector away
from the fix-mounted collector in the bank. The body of the manual suggests a
2” obstacle clearance for installation. Use this table in cases where less than 2”
nominal may be needed.
For example, if there is an obstacle on the right of the second collector to the
right of the fixed collector (2 collector gaps), there should be 1/2” clearance
from the obstacle.
Maximum pressures that CPVC and PVC piping can withstand at higher
temperatures
.
Table 4 | CPVC vs. PVC
Temperature
[
°
F]
80
90
100
110
120
130
140
150
160
170
180
CPVC Pressure
280
255
230
202
182
160
140
118
106
81.2
70.0
PVC Pressure
[psi]
246
210
174
143
112
86.8
61.6
41.3
24.2
*
10.1
*
-
*SunSaver
®
Systems must be rated to a minimum of 30 psi at the bottom header.
Bank Movement Clearances
Plumbing Heat and Pressure Tolerances
