Installation manual

installation manual TWIN 80 EN
(E000129016 - installation manual TWIN 80 EN - 030106v07
30
number
- glow plug protection counter is decremented 1 step per
minute
d
continuous
DHW combi-boiler
heat demand, pump
on, burner off
- burner is in starting-up sequence
- burner starts within 10 seconds
b
continuous
HWS external cylinder
heat demand, pump
on, burner off
- burner is in starting-up sequence
- burner starts within 10 seconds
C.
continuous
Heating
burner is on in heating
mode
heat demand (heating), pump on, burner on, boiler is
operating
d.
continuous
DHW combi-boiler
burner is on in hot
water mode
heat demand (internal tank), pump on, burner on, boiler is
operating
b.
continuous
HWS external cylinder
burner is on in hot
water mode
heat demand (external cylinder), pump on, burner on,
boiler is operating
P/C.
continuous
Heating
burner limited to low
load caused by low
water pressure (0.2-
0.5 bar)
- heat demand (heating), pump on, boiler is operating
- however, with a system water pressure between 0.2 and
0.5 bar, the burner is limited to low load
P/d.
continuous
DHW combi-boiler
burner limited to low
load caused by low
water pressure (0.2-
0.5 bar)
- heat demand (internal tank), pump on, boiler is operating
- however, with a system water pressure between 0.2 and
0.5 bar, the burner is limited to low load
P/b.
continuous
HWS external cylinder
burner limited to low
load caused by low
water pressure (0.2-
0.5 bar)
- heat demand (external cylinder), pump on, boiler is
operating
- however, with a system water pressure between 0.2 and
0.5 bar, the burner is limited to low load
fill the system with water to a
water pressure of 1.5 - 2.0 bar
A/C.
continuous
Heating
burner limited to low
load caused by high
flue gas temperature
(> 90°C)
- heat demand (heating), pump on, boiler is operating
- however, with a flue gas temperature above 90°C, the
burner is limited to low load.
A/d.
continuous
DHW combi-boiler
burner limited to low
load caused by high
flue gas temperature
(> 90°C)
- heat demand (internal tank), pump on, boiler is operating
- however, with a flue gas temperature above 90°C, the
burner is limited to low load
A/b.
continuous
HWS external cylinder
burner limited to low
load caused by high
flue gas temperature
(> 90°C)
- heat demand (external cylinder), pump on, boiler is
operating
- however, with a flue gas temperature above 90°C, the
burner is limited to low load
burner action restores
automatically when the actual flue
gas temperature descends 80°C
- check flue gas sensor
- check the water flow
- check primary heat exchanger
o
continuous
frost protection 8°C
(heating), pump on,
burner off
If the flow sensor temperature is below 8°C, the regulation
starts the pump
o.
continuous
frost protection 3°C
(heating), pump on,
burner on
If the flow temperature goes below 3 °C, the regulation
starts the burner to low load
frost protection is finished, when
the temperature of the return
sensor is above 15°C