Start-Up - Viessmann Vitocrossal 300 Series Service Instructions Manual

Service
Example Layout 4
Equipment required
Pos. Designation
Boiler with
A
Control unit
Vitocrossal 300 with
Vitotronic 200, type KW6A
Outside temperature sensor ATS
DHW heating by the boiler
DHW tank
B
Tank temperature sensor STS
T
DHW recirculation pump ZP
C
DHW pump UPSB
D
Zone circuit 1 [output 157]
F
Heating circuit pump, heating circuit A1
Zone circuit 2
H
AM1 extension module function output A1 33:6 zone circuit pump 2
G
AM1 extension module function output A2 34:7 zone circuit pump 3
I
Zone circuit 3
E
Thermostat zone circuits 1, 2, 3

Start-up

Legend
A Fault indicator (red)
B ON indicator (green)
C Reset button
D ON/OFF switch
46
(continued)
Vitocrossal 300 CU3A 26 to 199 Service
Starting the heating system
1. Check the heating system pressure at the pressure
gauge. The heating system pressure is too low if
the indicator is below 14 psi.
In this case, top up with water or notify your local
heating contractor.
2. For room air dependent operation:
Check that the ventilation opening of the installation
room are open and unrestricted.
Note: With room air dependent operation, the
combustion air is drawn from the boiler room.
3. Open the gas shut-off valve.
Note: Ask your heating contractor to explain the
positioning and handling of these components.
4. Switch ON the power supply, e.g. at a separate
power switch or fuse.
5. Turn the ON/OFF switch "8" ON. After a short time,
the standard menu is displayed and the green ON
indicator illuminates. Your heating system and, if
installed, your remote controls are now ready for
operation.
Refer to operating instructions for steps
on shut down the system.