Viadrus NAOS K4, Manual

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User
21
100
95
90
85
80
75
70
65
60
55
50
45
40
35
30
25
20
20,0 15,0 10,0 5,0
0
-5,0 -10,0 -15,0 -20,0
Ž
á
d
a
n
á
t
e
p
lo
ta
t
o
p
n
é
v
o
d
y
°C[
]
k ř ivka 4
k ř ivka 8
k ř ivka 12
k ř ivka 16
k ř ivka 20
k ř ivka 25
k ř ivka 30
Outside temperature [° С ]
Fig. № . 9
By pressing
i
K3
pushbutton twice, it is possible to see following information:
1time PT1000 temperature (solar sensor temperature), if sensor is not connected, LCD shows ---
2time OTC temperature, if sensor is not connected, LCD shows ---
Value stays on the LCD for 5 sec. (after releasing
i
K3
push button):
Frost protection
Frost protection is enabled in all the specified operating modes.
Legionella protection
The design of the boiler tank is activated protection against legionella.
Supply over temperature on DHW mode
This functionality is valid for all of 5 DHW mode configurations.
During a DHW heat demand, the temperature value read by the supply sensor is continuously monitored.
5.3 Lockout condition codes
Lockout condition is given with the capital "E" (error) on the status display and error code on the temperature display:
Symbols or are being shown only in case of lockout condition which needs to be solved by Service people.
Error code Description
E01 Ignition Lockout indication
E02 False flame indication
E03
High limit temperature protection (supply or return sensor)
E05 No frequency feedback from fan after 1 minute
E08 Flame circuit failure
E09 Valve feedback error
E12 EEPROM integrity lockout
E15 Drift sensors check failed
E16 Supply sensor stuck_at test failed
E17 Return sensor stuck_at test failed
E18 Cracked sensor test failed
E21
Adc failure
E33 Return water temperature sensor error
E35
Supply water temperature sensor error
E82 Flame loss
C
H
s
e
t
p
o
in
t
[°
С
]
OTC curve 30
OTC curve 25
OTC curve 20
OTC curve 16
OTC curve 12
OTC curve 8
OTC curve 4