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Hot water function
GREENSPRING CWi47 – 6 720 646 322 (2015/04)
12 Hot water function
Fig. 76
Fan speed
OK?
waiting
time of 10s
passed?
water tap
open?
Water flow
> 1.9 l/min
(see WF calc.)
NO
NO
NO
NO
YES
YES
YES
YES
NO NO NO
NO
YES
YES
Start sparking
IDLE
Open the gas
valve
1st
Safety time
of 5s passed?
Ionization
detected?
6720646322-20.1V
NO
NO
NO
NO
YES
YES
YES
See error
code table
Post purge of
fan for 10 sec.
Stay blocked
till RESET
close second
gas valve
Post purge of
fan for 10 sec.
water tap
closed
<1.9 l/m?
safety
devices
OK?
close one gas
valve
waiting
time of
1s passed?
flame off?
Hot water
delivered at
selected temp.
Appliance
ready to start?
Fan speed = correct
Ionization = off
Temp. limiter = closed
Temp. sensors = ok
Over heat protection = ok
See error code table
INPUTS:
- FANSPEED
- WATER TEMP.
- WATERFLOW
OUTPUTS:
- FANSPEED
- WATERFLOW
YES
YES
YES YES
2nd
Safety time of
5s passed?
3rd
Safety time
of 5s passed?
Water flow
Calculus
WF =
Burner ON
Burner ON
Minimum Power
(Set point - Inlet)
NO
YES
YES
Burner shutdown at:
Set point +9°F (5°C)
WF < 1.7 l/min ± 0.2 l/min
Burner shutdown at:
Set point +14°F (8°C)
WF < 1.7 l/min ± 0.2 l/min
2 l/min < WF <6 l/min
WF > 6 l/min
NO
Water flow procedure
58


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