CONTROL METHODS
HeatNet Control V3
Page 40
DHW Method 3: DHW Heating Only, Using a Header Sensor Input
Example: DHW Only Using Header Sensor, Primary/Secondary
– Method 3
MASTER
MEMBER 2
MEMBER 3
HNET
HNET
Tank Sensor
Su
p
p
ly
H
ea
d
er
Se
n
so
r
E
xp
a
n
sio
n
T
an
k
Cold Water
Makeup
Lo
ca
l P
u
m
p
Lo
ca
l P
u
m
p
Domestic
Supply
Domestic
Supply
WM
HeatNet
HeatNet
HeatNet
Lo
ca
l P
u
m
p
DHW METHOD 3: DHW Heating ONLY using a Header sensor input, Multiple Boilers, Reverse Return.
In this method a Heating Setpoint is maintained at the Master’s System Header Sensor located in the DHW tank. The Master’s
Heat Demand
input enables space heating and maintains the Heating Setpoint at the System Header Sensor. Boilers are staged to
meet the setpoint in the DHW tank based on their runtime, and each boiler will enable its local pump when it is running. The
Master modulates the boilers to maintain the Heating Setpoint at the header sensor located in the DHW tank.
