©
Viessmann 5443202
9
|
SCU124
Adjustment Channels
Channel
Description
Factory setting
Page
Arr
x
System
2
20
DT O
x
Switch-on temperature difference
12.0 °Ra [6.0 K]
20
DT F
x
Switch-off temperature difference
8.0 °Ra [4.0 K]
20
DT S
x
Nominal temperature difference
20.0 °Ra [10.0 K]
20
RIS
x
Rise control R1
4 °Ra [2 K]
20
n1MN
x
Minimum pump speed R1
30 %
20
S MX
x
Maximum tank temperature
140 °F [60 °C]
21
EM
x
Emergency temperature collector
270 °F [130 °C]
21
Emergency temperature collector if ODB is activated:
200 °F [95 °C]
21
OCC
x
Option collector cooling
OFF
22
CMX
x*
Maximum collector temperature
230 °F [110 °C]
22
OSYC
x
Option system cooling
OFF
22
DTCO
x*
Cooling switch-on temperature difference
40.0 °Ra [20.0 K]
22
DTCF
x*
Cooling switch-off temperature difference
30.0 °Ra [15.0 K]
22
OSTC
x
Option tank cooling
OFF
23
OHOL
x*
Option holiday cooling
OFF
23
THOL
x*
Holiday cooling temperature
110 °F [40 °C]
23
OCN
x
Option minimum limitation
OFF
23
CMN
x*
Minimum collector temperature
50 °F [10 °C]
23
OCF
x
Option antifreeze
OFF
23
CFR
x*
Antifreeze temperature
40.0 °F [4.0 °C]
23
O TC
x
Option tube collector
OFF
24
TCST
x*
OTC starting time
07:00
24
TCEN
x*
OTC ending time
19:00
24
TCRU
x*
OTC runtime
30 s
24
TCIN
x*
OTC standstill interval
30 min
24
OHQM
x
Option energy metering
OFF
24
FMAX
x*
Maximum flow
6.0 l
24
MEDT
x*
Antifreeze type
1
24
MED%
x*
Antifreeze concentration
45 %
24
AH O
s
Switch-on temp. for thermostat 1
110 °F [40 °C]
10
AH F
s
Switch-off temp. for thermostat 1
120 °F [45 °C]
10
t1 O
s
Switch-on time 1 thermostat
00:00
10
t1 F
s
Switch-off time 1 thermostat
00:00
10
t2 O
s
Switch-on time 2 thermostat
00:00
10
t2 F
s
Switch-off time 2 thermostat
00:00
10
t3 O
s
Switch-on time 3 thermostat
00:00
10
t3 F
s
Switch-off time 3 thermostat
00:00
10
ODB
x
Drainback option
OFF
25
tDTO
x*
ODB switch-on condition - time period
60 s
25
tFLL
x*
ODB filling time
5.0 min
25
tSTB
x*
ODB stabilization time
2.0 min
25
OTD
s
Option thermal disinfection
OFF
11
PDIS
s*
Monitoring period
01:00
11
DDIS
s*
Heating period
01:00
11
TDIS
s*
Disinfection temperature
140 °F [60 °C]
11
SDIS
s*
Starting time
00:00
11
MAN1
x
Manual operation R1
Auto
26
MAN2
x
Manual operation R2
Auto
26
LANG
x
Language
En
26
UNIT
x
Temperature unit
°C
26
RESE
x
Reset - back to factory defaults
26
W0040100
Version number
Legend:
Symbol
Specification
x
Channel is available
x*
Channel is available if the corresponding option is activated.
s
Channel is specifically available in this system layout
s*
System-specific channel, only available if the corresponding option is activated
