Chimney Sweep Function; Pump Anti-Block Function; Three-Way Anti-Block Function; Radiators Antifreeze Function - Immergas HERCULES SOLAR 26 2 ErP Instruction And Recommendation Booklet

1st Level 2nd Level
RELE3
(optional)
P76
PAR 1
PAR 2
SOLAR
PAR 3
PAR 4
PAR 5
PAR 6 60°C ÷ 95°C
PAR 7 10°C ÷ 90°C

3.9 "CHIMNEY SWEEP FUNCTION"

If this function is activated it takes boiler func-
tioning to the adjustable power of the central
heating selector switch. In this state all adjust-
ments are excluded and only the safety thermo-
stat and the limit thermostat remain active. To
activate the chimney sweep function press the
Reset button "C" for 8 to 15 seconds in absence of
domestic hot water and heating requests. Its acti-
vation is signalled by the relative symbol (22 Fig.
2-1). This function allows the technician to check
the combustion parameters. After the checks
deactivate the function, switching the boiler off
and then on again using the Stand-by button.

3.10 PUMP ANTI-BLOCK FUNCTION.

The boiler has a function that starts the pump at
least once every 24 hours for the duration of 30
seconds in order to reduce the risk of the pump
becoming blocked due to prolonged inactivity.
3.11 THREE-WAY ANTI-BLOCK
FUNCTION.
Both in "domestic hot water" and in "domestic
hot water-central heating" phase the boiler is
equipped with a function that starts the three-
way motorised group 24 hours after it was last
in operation, running it for a full cycle so as to
reduce the risk of the three-way group becoming
blocked due to prolonged inactivity.
(password must be entered)
Options
RELE3-0 Relay 3 not used
Check the storage tank recirculation pump
RELE3-1
(not used on this model)
The relay signals the intervention of a boiler block (Can be coupled to an
RELE3-2
external signalling device, not supplied)
The relay signals that the boiler is on and in the heating stage
RELE3-3
(Can be coupled with an external circulator pump, not supplied)
Controls the opening of an external gas valve in concomitance with an
RELE3-4
ignition request of the boiler burner
RELE3-5 Function not available in this boiler model
In the event the boiler circulator pump is replaced with a traditional fixed speed
RELE3-6
circulator pump one must connect the new circulator pump to the relay board
With S34 = On. If the reading of the external probe is not correct it is possible
-15°C ÷ to correct it in order to compensate any environmental factors
+14°C CE With S34 = Off and system supervisor connected set the parameter to
maximum until CE value is displayed
Solar operating mode.
0 = Disabled
1 = Solar active with automatic pump
0 ÷ 3
2 = Solar active with continuous pump
3 = Solar active with automatic pump (CH integration cannot be acti-
vated on this boiler)
∆T Enabling differential.
1 ÷ 20K Collector pump.
∆T Disabling differential.
1 ÷ 20K Collector pump.
Antifreeze function.
0 ÷ 1 0 = Deactivated
1 = Active
100°C ÷
Maximum temperature accepted by the collector
200°C
Maximum temperature accepted by the storage tank
Minimum temperature accepted by the collector
3.12 RADIATORS ANTIFREEZE
FUNCTION.
If the system return water is below 4°C, the boiler
starts up until reaching 42°C.
3.13 P.C.B. PERIODIC SELF-CHECK.
During functioning in central heating mode or
with boiler in standby, the function activates
every 18 hours after the last boiler check/power
supply. In case of functioning in domestic hot
water mode the self-check starts within 10 min-
utes after the end of the withdrawing in progress,
for duration of approx. 10 seconds.
N.B.: during self-check, the boiler remains off.

3.14 AUTOMATIC VENT FUNCTION.

In the case of new central heating systems and
in particular mode for floor systems, it is very
important that dearation is performed correctly.
To activate function "F8" press buttons "A and
B" at the same time (Fig. 2-1) for 5 seconds with
the boiler in stand-by. The function consists of
the cyclic activation of the pump (100 s ON, 20
s OFF) and the 3-way valve (120 s domestic hot
water, 120 s central heating). The function ends
after 18 hours or by switching the boiler on using
the ignition button "
M5 menu
Description
".
37
Value
Default set
value by the tech-
nician
RELE3-0
0°C
1
6
4
0
140
80
10