Boiler; Dhw - Viessmann Vitoladens 300-W Installation And Service Instructions For Contractors

Codes
Coding level 1
(cont.)
Coding in the delivered condition
Supply temperature setpoint with external demand
9b:70 Set flow temperature for external
demand 70 °C

Boiler

Coding
Coding in the delivered condition
Burner service in 100 hours
21:0 No service interval set (in hours
run)
Service interval in months
23:0 No time set for burner service in-
terval
Service status
24:0 "Service" not shown on the dis-
play
Filling/venting
2F:0 Venting program/filling program
disabled

DHW

Coding
Coding in the delivered condition
DHW temperature setpoint reheating suppression
67:40 For solar DHW heating: set DHW
temperature 40 °C. Above the se-
lected set temperature reheating is
suppressed.
Enable DHW re-circ pump
73:0 DHW circulation pump: "ON" ac-
cording to time program
42
Possible change
9b:0 Set flow temperature for external de-
to mand adjustable from 0 to 127 °C
9b:127 (limited by boiler-specific parame-
ters)
Possible change
21:1 The number of hours run before the
to burner should be serviced is adjust-
21:100 able from 100 to 10,000 h
One adjusting step
23:1 Time interval adjustable from 1 to
to 24 months
23:24
24:1 "Service" is shown on the display
(address is automatically set and
must be manually reset after a serv-
ice has been carried out)
2F:1 Venting program enabled
2F:2 Filling program enabled
Possible change
67:0 Set DHW temperature adjustable
to from 0 to 95 °C (limited by boiler-
67:95 specific parameters)
73:1 "ON" from once per hour for 5 min
to up to 6 times per hour for 5 min dur-
73:6 ing the time program
73:7 Constantly "ON"
≙
100 h