Viessmann C3TB, Installation And Service Instructions For Contractors

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95
Parameter address A5:... With heating circuit pump logic function: Heating circuit pump "OFF"
7
to OT
>
RT
set
–
1 K
15 OT
>
RT
set
–
9 K
Coding in the delivered condition Possible change
Extended economy function, adjusted outdoor temperature
A6:36 Extended economy mode disa-
bled
A6:5
to
A6:35 Extended economy mode enabled:
The burner and heating circuit pump
will stop at a variable value, adjusta-
ble between 5 and 35 °C plus 1 °C.
Mixer is being closed. Basis for this
is the adjusted outside temperature.
This is composed of the actual out-
side temperature and a time con-
stant that takes account of the way
an average building cools down.
Extended economy function, mixer
A7:0 Only for heating circuit with mixer:
Without mixer economy function A7:1 With mixer economy function (exten-
ded heating circuit pump logic):
Heating circuit pump also "OFF":
■
If the mixer has been trying to
close for longer than 20 min.
Heating circuit pump "ON":
■
If the mixer changes to control
function
■
If there is a risk of frost
Pump idle time, transition reduced Operation
A9:7 With pump idle time: heating circuit
pump "OFF" when set value is
modified by changing the operating
mode or changing the set room
temperature A9:0 Without pump idle time
A9:1
to
A9:15 With pump idle time, adjustable from
1 to 15.
1 = short idle time
15 = long idle time
Weather-compensated/room temperature hook-up
b0:0 For heating circuit with mixer and
remote control only:
Heating mode/reduced mode:
Weather-compensated b0:1 Heating mode: Weather-compensa-
ted
Reduced mode: With room tempera-
ture hook-up
b0:2 Heating mode: With room tempera-
ture hook-up
Reduced mode: Weather-compen-
sated
b0:3 Heating mode/reduced mode: With
room temperature hook-up
Economy function room temperature
b5:0 For heating circuit with mixer and
remote control only:
Without room temperature-de-
pendent heating circuit pump logic
function b5:1
to
b5:8 Heating circuit pump logic function,
see the following table.
Codes
Coding level 1
(cont.)
5775 636 GB
Codes