8
5813 312 - 01
Vitocell 300-W/V, EVIA/EVIB Installation, Operating and Service
119 USG (450 L) Tank Connections
Installation
* Optional for Solar applications only.
Legend
DHW
Domestic Hot Water supply
RT
Recirculation Tapping (DHW)
TS
Clamp (behind the thermal insulation) for tank
Temperature Sensor or temperature controller
BWS
Boiler Water Supply
BWR
Boiler Water Return
DCW/D Domestic Cold Water supply/Drain
Supplied component sizes
Quantity
Component
Size
A
Cap
1 in. NPT
1
B
Tee
1
a
in. NPT
1
C
Reducer bushing
1
a
to
c
in. NPT
1
D
Temperature and
pressure relief valve
c
in. NPT
1
E
Solar elbow*
1 in. NPT
Optional
42 and 79 USG (160 and 300 L) Tank Installation
IMPORTANT
The temperature sensor for solar operation is included in
the solar control unit package.
The brass elbow with sensor well is available as an option
and must be used when solar connection is required.
Never wrap insulating tape around the sensor. Do not
install solar tank sensor anywhere other than the brass
elbow with sensor well.
1. For solar operation, install the sensor well into the
brass elbow and connect the assembly to the solar
return
line.
2. Insert the temperature sensor until it bottoms out
inside the sensor well.
Temperature sensor installation for solar operation
Connections
Size
BWS, BWR, RT
DHW, DCW/D
in. (male NPT)
in. (male NPT)
1
1
a
