Worcester C1, Инструкции по установке и обслуживанию

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17. Operational Flow Diagrams
MAIN SWITCH
ON
Green Light
On
Room
thermostat
and/or mains
programmer
(or link) On
AND
Electronic
facia
programmer
(if fitted) On
AND
ST13 link in
AND
CH control
knob On
CENTRAL
HEATING
DEMAND
CH light On.
Pump On.
Fan ON/
ignition
Sequence.
Burner Light
On.
Three minute
wait
Gas valve Off.
(CH light still
on. Pump still
On)
Over tempera-
ture shut-
down if flow
temperature
5°C above set
value
Two minute
minimum
burner
pressure then
ramp up
pressure over
next one
minute
Modulate gas
to maintain
flow
temperature
set by control
knob
DEMAND
END
Overrun
function
(see overleaf)
CENTRAL HEATING FUNCTION
AND
AND
AND
DOMESTIC HOT WATER FUNCTION
MAIN SWITCH
ON
Green Light
On
Flow switch
On
(Tap open)
DOMESTIC
HOT WATER
DEMAND
(Priority over
CH demand)
Pump continue
4 seconds if
primary temp
above DHW
setting. Burner
to MAX for 4
seconds
Modulate gas
to maintain
delivered
water
temperature
set by control
knob
Is CH
interrupted?
DHW temp
drops to user
set point
Over
temperature
shut-down if
water
temperature
above 85°C
Primary
temperature
115°C
DEMAND
END
Overrun
function
(see overleaf)
YES
NO
Ignition
sequence and
burner to MAX
for 4 seconds
Gas valve off.
Fan on 35
seconds.
Pump on until
temp drops to
60°C
Primary
75°
Gas valve off.
Fan on.
Pump on