Viessmann VITODENS 222-F Service Instructions Manual page 62

Code 2
Heating Circuit 1, 2 and 3
Coding in the factory setting
C5:20
C6:74
D3:14
D4:0
D5:0
D6:0
D7:0
D8:0
E1:1
DO NOT ADJUST
E2:50
62
(continued)
Electronic minimum flow
temperature limit 68° F
(20° C)
Electronic maximum flow
temperature limit 165° F
(74° C)
Heating curve slope = 1.4
Heating curve shift = 0
The external heating program
changeover changes the
heating program to "Constant
operation with reduced room
temperature" or "Standby
mode"
Heating circuit pump stays in
control mode at signal
"External blocking"
Heating circuit pump stays
in control mode at signal
"External demand"
No heating program changeover
via extension EA1
--
With remote control: No display
correction for the actual room
temperature
Vitodens 222-F B2TA 19 and 35 Service
Possible change
C5:1 Minimum limit adjustable from 1 to
to 260° F (127° C) (limited by boiler-
C5:127 specific parameters).
C6:10 Maximum limit adjustable from 50
to to 260° F (10 to 127° C) (limited
C6:127 by boiler-specific parameters).
D3:2 Heating curve slope adjustable
to from 0.2 to 3.5 (see page 38).
D3:35
D4:–13 Heating curve shift adjustable from
to –13 to 40 (see page 38).
D4:40
D5:1 The external heating program
changeover changes to "Constant
operation with standard room
temperature" (subject to coding
address 3A, 3B and 3C).
D6:1 Heating circuit pump stops at signal
"External blocking" (subject to
coding addresses 3A, 3B and 3C).
D6:2 Heating circuit pump starts at signal
"External blocking" (subject to
coding addresses 3A, 3B and 3C).
D7:1 Heating circuit pump stops at signal
"External demand" (subject to
coding addresses 3A, 3B and 3C).
D7:2 Heating circuit pump starts at signal
"External demand" (subject to
coding addresses 3A, 3B and 3C).
D8:1 Heating program changeover
via input DE1 at extension EA1.
D8:2 Heating program changeover
via input DE2 at extension EA1.
D8:3 Heating program changeover
via input DE3 at extension EA1.
--
E2:0 Display correction –5 K
to to
E2:49 Display correction –0.1 K.
E2:51 Display correction +0.1 K
to to
E2:99 Display correction +4.9 K.
--