Technical Manual

Standard Equipment/Product Installation
8 VITOCELL 300-B
Standard Equipment
79 USG / 300 ltr capacity DHW Tank
DHW tank made from high-alloy stainless
steel with fitted PUR hard foam thermal
insulation.
– 2 thermometers °F / °C
– adjustable leveling bolts
The following are packed separately and
attached to the crate:
– 1 Loctite package
– 1 temperature and pressure relief valve
– 2 reduction couplings (1”x½”)
– 2 sensor wells
– 2 insulation blankets for sensor wells
– 7 brass adaptors (1”)
– 1 brass tee (1”)
– 1 brass hex bushing (1”x¾”)
– 1 brass cap (1”)
Must be ordered separately:
– 1 brass elbow with sensor well for solar
collector return, Part No. 7175 213
Product Installation
Domestic hot water connection
119 USG / 450 ltr capacity DHW Tank
DHW tank made from high alloy stainless
steel and separately packed soft PET
thermal insulation.
– 2 thermometers °F / °C
– adjustable leveling bolts
The following are packed separately and
attached to the crate:
– 1 Loctite package
– 1 temperature and pressure relief valve
– 2 reduction couplings (1”x½”)
– 2 sensor wells
– 2 insulation blankets for sensor wells
– 7 brass adaptors (1¼”)
– 1 brass tee (1¼”)
– 1 brass hex bushing (1¼”x¾”)
– 1 brass cap (1¼”)
Must be ordered sepatarely:
– 1 brass elbow with sensor well for solar
collector return, Part No. 7219 729
Domestic hot water supply
DHW recirculation line
DHW recirculation pump
Spring-loaded flow check valve
Discharge pipe
Pressure and temperature relief valve
Shut-off valve
Drain
Domestic cold water supply lines
Backflow preventer
Domestic cold water inlet
Precharged expansion tank
(required where backflow preventer is
installed; check local plumbing codes
and requirements)
Thermostatic mixing valve/anti-scald
valve for solar applications (field supply)
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Due to the potentially high DHW
temperatures generated by the solar
heating system, the domestic hot
water temperature must be limited to a
maximum of 140°F/60°C by installing
a mixing device, e.g. a thermostatic
mixing valve. The mixing device does
not completely eliminate the risk of
scalding at the tap. The installation of a
mixing tap is required.
WARNING