3
Operation Flow Chart
Heating Mode
Domestic Hot Water Mode (DHW Mode)
Operation Flow Chart
Chapter 1. – Product Overview
Burner
Air & Gas
Mixing
Burner
Plate Heat
Exchanger
Air & Gas
Mixing
Plate Heat
Exchanger
Primary Heat
Exchanger
Secondary Heat
Exchanger
Primary Heat
Exchanger
Secondary Heat
Exchanger
Circulation Pump
Gas
Condensate
Cold Water Inlet
(DHW)
Hot Water Outlet
(DHW)
Pressure Relief Valve
(DHW)
Pressure Relief Valve
for Heating
Circulation Pump
Gas
Condensate
Auto Feeder Valve
Heating Supply
Heating Return
Auto Feeder Valve
Pressure Relief Valve
for Heating
DHW Plate
Heat Exchanger
Burner
Air & Gas
Mixing
Burner
Plate Heat
Exchanger
Air & Gas
Mixing
Plate Heat
Exchanger
Primary Heat
Exchanger
Secondary Heat
Exchanger
Primary Heat
Exchanger
Secondary Heat
Exchanger
Circulation Pump
Gas
Condensate
Cold Water Inlet
(DHW)
Hot Water Outlet
(DHW)
Pressure Relief Valve
(DHW)
Pressure Relief Valve
for Heating
Circulation Pump
Gas
Condensate
Auto Feeder Valve
Heating Supply
Heating Return
Auto Feeder Valve
Pressure Relief Valve
for Heating
DHW Plate
Heat Exchanger
The Condensing Gas Combi Boiler discharges condensate
.
When heat from the exhaust gas is collected within the secondary heat
exchanger, condensation occurs from moisture in the exhaust gas and
the resulting water is discharged from the drain pipe (approx. 2 gallons/
hour (7.5 liters/hour) maximum).
It is not a water leak. Do not plug or block the drain line as it must always
be allowed to freely flow.
Note: The condensate discharged is acidic with a pH level of
approximately 2-3. A condensate neutralizer may be required by local
code prior to disposal.
C
on
de
ns
at
e
Pipe
Condensate
comes out from
here.
Summary of Contents for CB180-DV
Page 9: ...9 ...
Page 37: ...37 Memo ...
