Instruction manual
Figure 5 shows an example of a domestic solar heating system based on an indirect water
heater with two coils. The domestic water can be heated by the solar system as well as the
boiler.
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cold water
hot water
solar collec
tor array
anti-scald valve
expansion tank
ll/purge valves
air separator
circulator w/
isolation
anges
solar
controller
solar indirect water heater w/
two coils
pressure
relief
valve
air vent w/ shut
o valve
boiler
boiler
circulator
w/ check
valve and
isolation
anges
pressure
reducing
valve
backow
preventer
air separator
purge
valve
Figure 5: Single tank system with boiler backup
SECTION IV: INSTALLATION (cont.)