eco-spark® for pre-heating
Solar hot water storage tank
Magen eco-Spark
®
Installation manual. © 2012, all rights reserved
P a g e
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50
10.
Hot water distribution station for users.
System must be designed by a professional engineer considering the following:
Flow rates
-
The flow in each panel should be an average of 300 l/h (1.3 gpm).
-
Bank arrangements should not exceed more than 3 banks in one series (consider specific conditions
to determine number of banks).
Piping
-
Design the pipe diameters so that the waters' velocity will not exceed 1.7 m/s (5.5 ft/s).
-
Piping must resist high temperatures. Use PEX/PPR/CPVC certified or authorized for drinking water
contact.
-
Take into account that the plastic expands and contracts with temperature changes. Allow movement
of pipes and fittings accordingly.
-
Make sure that the diameter of the pipes you are adding is not smaller than the diameter of the pipes
in the auxiliary system
.
Control
-
A controller that commands both the auxiliary heating and solar systems will provide the maximum
performance.
-
The control system in the drawing is the basic system for operation. If required a more complex
control system can be installed in order to measure the energy delivered to the user.
-
A professional control system should record the measured parameters of the system and the ambient
parameters.
Storage tank
-
Storage tank's volume should be about 60% of daily water demand.
-
Account for 1m
²
(10')
collectors' area for each 75 liters (20 gallons) storage volume.
-
All accessories and maintenance of storage tank must comply will local health codes to avoid the
breading of the Legionellosis bacteria.
