Table of Contents
Advertisement
18.5 Air Handler
The Combi Boiler can control the operation of an Air Handler when thermostat is used in combination with the
Air Handler.
The Air Handler function is designed to stop the Air Handler's pump and fan operation when the Combi Boiler's
operation is not suitable for the Air Handler.
* In order to set up the Air Handler, from Installer Mode [I:08_Air] should be activated. (Refer to page 62)
Refer to page 51 for electrical wiring instructions.
* In case of installing external water feeder.
PRESSURE
PRESSURE
REDUCING VALVE
GAUGE
BACKFLOW
PREVENTER
MAKE UP WATER
AIR SEPARATOR
Not to install an external pump upstream
an expansion tank in heating supply pipe.
BALL VALVE
(TYPICAL)
EXTERNAL
PUMP
EXPANSION
TANK
Not to exceed 4 pipe Dia
or Max. 12 in. APART
Optional LWCO
(See on the page 44)
Heating
Return
Heating Supply
BALL VALVE
Air Handler
BALL VALVE
DHW Cold
Water Supply
DHW Supply
Auto Feeder
Recommended Pressure Setting
: 15-30 psi
Wiring Diagram
[I:09 EP] should be
"ON" in lnstaller Mode to
activate this terminal.
[CN237]
Pump
[CN233]
T - T
[CN232]
A/H
Air Handler
Air Handler PCB
Plumbing Applications
EXTERNAL
PUMP
Room
Thermostat
77
Advertisement
Table of Contents
