119 Usg (450 L) Tank Connections; And 79 Usg (160 And 300 L) Tank Installation - Viessmann VITOCELL 300-W Installation, Operating And Service Instructions

Installation

119 USG (450 L) Tank Connections

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

42 and 79 USG (160 and 300 L) Tank Installation

8
Vitocell 300-W/V, EVIA/EVIB Installation, Operating and Service
Supplied component sizes
Component
A Cap
B Tee
C Reducer bushing
D Temperature and
pressure relief valve
E Solar elbow*
* Optional for Solar applications only.
Connections
BWS, BWR, RT
DHW, DCW/D
Temperature sensor installation for solar operation
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.
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.
IMPORTANT
Never wrap insulating tape around the sensor. Do not
install solar tank sensor anywhere other than the brass
elbow with sensor well.
Quantity
Size
1 in. NPT
1a in. NPT
1a to c in. NPT
c in. NPT
1 in. NPT Optional
Size
1
in. (male NPT)
1a
in. (male NPT)
1
1
1
1