FAFCO Sunsaver - APPENDIX C - Reference Tables & Figures; Bank Movement Clearances; Plumbing Heat and Pressure Tolerances

®
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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