Optional Accessories - Viessmann VITOCROSSAL 300 Technical Data Manual
For operation with natural gas and liquid propane gas
floor mounted, gas-fired condensing boiler
heating input 19 to 199 mbh
5.6 to 58 kw
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Also See for VITOCROSSAL 300:
- Service instructions manual (164 pages) ,
- Service instructions for contractors (148 pages) ,
- Service manual (108 pages)
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Accessories
Sensors
Boiler Temperature Sensor
The boiler temperature sensor is connected at the control
unit for weather-responsive operation and is built into the
boiler.
Specification sensor type: Viessmann NTC 10K ohms
Max. ambient temp.
- at operation:
- when storing
or transporting:
DHW Tank Temperature Sensor
- integrated DHW temperature sensor
Immersion Temperature Sensor
To capture the low loss temperature
(if the LLH is used)
Specification
Lead length fully wired:
Permissible ambient temp.
- during operation:
- when storing
or transporting:
Optional Accessories
Supply Temperature Sensor
(strap-on sensor, included with mixing valve actuator
accessory kit),
- when storing
or transporting:
Installed with a strapping band.
Cable length 19.7 ft. (6 m), ready to plug in.
Max. ambient temp.
- at operation:
- when storing
or transporting:
12
(supplied)
at 77ºF (25ºC)
32 to 266ºF (0 to 130ºC)
- 4 to+158ºF (-20 to+70ºC)
(supplied)
(accessory)
12 ft. (3.75 m),
32 to 194°F (0 to 90°C)
- 4 to+158°F (-20 to+70°C)
-4 to+158°F (-20 to+70ºC)
32 to 212ºF (0 to 100ºC)
-4 to+149ºF (-20 to+70ºC)
Vitocrossal 300 CU3A 26 to 57 Technical Data
Outdoor Temperature Sensor
Sensor location:
- North or northwest wall of building
- 6.6 to 8.2 ft. (2 to 2.5 m) above ground or in case
of a multi-storey building approximately halfway up
the second floor
Electrical connection:
- 2-wire cable, max. cable length 115 ft. (35 m)
with a wire size of min. AWG 16 copper
- Cable to the outdoor sensor must not be laid near
line voltage wiring (120/240V)
Max. ambient temp.
- at operation:
- when storing
or transporting:
KM BUS Expansion Module
To connect 2 to 9 devices (mixing valve actuator,
Vitotrol, input module, etc.) to the single KM BUS
connection of the boiler.
Specification
Lead length
Permissible ambient temp.
- during operation
- during storage and
transport:
(supplied)
32 to 194ºF (0 to 90ºC)
- 4 to+158ºF (-20 to+70ºC)
10 ft. (3.0 m), fully wired
32 to 104°F (0 to 40°C)
- 4 to+149°F (-20 to+65°C)
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