16
5696 675 - 04
Vitocell 300-H, EHA Series Installation
Domestic Water Connections
(continued)
42 and 53 USG (160 and 200 L) capacity
92 and 119 USG (350 and 450 L) capacity
Legend
A
Domestic hot water supply
B
DHW recirculation line
C
recirculation pump
D
Spring loaded check valve
E
Discharge pipe
F
Pressure and temperature relief valve
G
Shut-off valve
H
Drain
K
Domestic cold water supply lines
L
Back-flow preventer
M
Domestic cold water inlet
N
Precharged expansion tank
(required where back-flow
preventer is installed; check local
plumbing codes and requirements)
Connections