Viessmann VITOTRONIC300 Installation And Service Instructions Manual page 59

Vitotronic 300, GW2B Installation and Service
Checking Actuators and Sensors
Display
"Burner stage 1"
"Full load"
"Burner stage 1 + 2"
"Burner modulation"
"Burner modulation"
"Burner modulation"
"Output 20"
"Output 52"
"Output 52"
"Output 52"
"DHW tank prim pump"
"DHW circ pump"
"Output 29"
"Central fault mess."
"Htg circ pump HC2"
"Mixing valve HC2"
"Mixing valve HC2"
"Htg circ pump HC3"
"Mixing valve HC3"
"Mixing valve HC3"
"EA1 output 1"
"AM1 output 1"
"AM1 output 2"
"Solar circuit pump"
"Solar circ pump min"
"Solar circ pump max"
"SM1 output 22"
(continued)
Explanation
ON Burner stage 1 is switched on.
ON Mod. burner operates at max. output.
ON Burner stages 1 and 2 are switched ON.
Open Modulating burner.
Neutral Modulating burner.
Closed Modulating burner.
ON Output 20 enabled.
Open -
Neutral -
Closed -
ON Output for circulation pump for DHW tank heating enabled.
ON Output for DHW recirculation pump enabled.
ON Output 29 enabled.-
ON -
ON Output for heating circuit pump enabled (heating circuit with mixing valve M2).
Open Output "Mixing valve open" enabled (heating circuit with mixing valve M2).
Closed Output "Mixing valve closed" enabled (heating circuit with mixing valve M2).
ON Output for heating circuit pump enabled (heating circuit with mixing valve M3).
Open Output "Mixing valve open" enabled (heating circuit with mixing valve M3).
Closed Output "Mixing valve open" enabled (heating circuit with mixing valve M3).
ON
Contact" P - S" on plug aBJ for extension EA1 closed.
ON Output enabled.
ON Output enabled.
ON
Output for solar circuit pump sF at solar control module, type SM1 enabled.
ON
Output for solar circuit pump sF at solar control module, type SM1, switched
to minimum speed.
ON
Output for solar circuit pump sF at solar control module, type SM1, switched
to maximum speed.
ON
Output sS at solar control module, type SM1, enabled.
Note: During burner operation, the pumps connected
to the control unit are started.
Checking sensors
1. Press OK and simultaneously for approx. 4 sec.
2. "Diagnosis"
3. Select group (see page 65).
4. Scan actual temperature of the relevant sensor.
Commissioning
59