Installation manual

10.3 Connection to Unvented Indirect HW System (Mains Pressure)
SOLAR
PANEL ON
ROOF
10mm RETURN
8mm FLOW
PUMP
Stop tap
Cold water
inlet
Thermostatic
mixing valve
Unvented fittings
including pressure
reducing valve and 6
bar pressure relief
valve refitted before
MonoSolar
Unvented
hot water
tank
Blended
Hot water
out
MONOSOLAR
THERMAL
STORE
The Atmos MonoSolar can be installed as a pre-heat tank to an unvented hot water
tank. The unvented tank will be fitted with a pressure reducing valve and 6 bar safety
relief valve (UV assembly) on the cold water inlet side. When installing the MonoSolar
tank, ensure that this UV assembly is on the inlet side of the MonoSolar, and that there
is no valve between the hot water outlet and the cold water inlet of the unvented hot
water tank.
The water in the MonoSolar can reach 85
o
C in the summer, and the UV assembly is not
be suitable for use with water at this temperature, which is why it must be situated on
the cold water side. Furthermore a thermostatic mixer valve must be fitted on the hot
water outlet to prevent scalding.
MonoSolar & Solar Panels Installation Manual Page 25 of 29