Immergas Hercules Condensing 26 3 ErP Instruction And Recommendation Booklet page 33

1st Level 2nd Level Options
P66
P67
P68 0s ÷ 500s
P69 0s ÷ 255s
P70 0s ÷ 840s
P71
SERVICE
AUTO
P72 09 L/M
12 L/M
15 L/M
RELE1-0
RELE1-1
RELE1-2
RELE1
RELE1-3
(optional)
RELE1-4
RELE1-5
RELE2-0
RELE2-1
RELE2-2
RELE2-3
RELE2
(optional)
RELE2-4
RELE2-5
RELE2-6
(password must be entered)
With the external probe present it defines at which minimum external
temperature the boiler must operate at the maximum flow temperature
P66/C (see graph Fig. 1-6) (can be set between -20°C and 0°C)
N.B.: to continue one must confirm the parameter (press "D" or exit
adjustment "P66" by pressing "C")
With the external probe present it defines at which maximum external
temperature the boiler must operate at the minimum flow temperature
P66/D (see graph Fig. 1-6) (can be set between 5°C and +25°C)
N.B.: to continue one must confirm the parameter (press "D" or exit
adjustment "P66" by pressing "C")
In winter mode the pump is always powered and so functions continu-
P67.1
ously
In winter mode the pump is managed by the room thermostat or by the
P67.2
remote control
In winter mode the pump is managed by the room thermostat or by the
P67.3
remote control and by the boiler flow probe
The boiler is set to ignite the burner immediately after a request for cen-
tral heating. In the case of particular systems (e.g. area systems with mo-
torised thermostatic valves etc.) it could be necessary to delay switch-on
The boiler has an electronic timing device that prevents the burner from
igniting too often in the central heating phase.
The boiler performs an ignition ramp to arrive from minimum power to
nominal heat output.
Boiler ignition for heating the domestic hot water occurs when the water
P71.1 contained in the storage tank falls by 3°C with respect to the temperature
(-3°C) set.
Solar function deactivated
Boiler ignition for heating the domestic hot water occurs when the water
contained in the storage tank falls by 5°C with respect to the temperature
P71.2
set.
(-5°C)
Solar function active, if the input domestic hot water has a sufficient
temperature the boiler does not switch on
OFF
This function does not affect the correct functioning of this boiler model.
Relay 1 not used
In a system divided into zones, relay 1 controls the main zone
The relay signals the intervention of a boiler block (Can be coupled to an
external signalling device, not supplied)
The relay signals that the boiler is on and in the heating stage
(Can be coupled with an external circulator pump, not supplied)
Controls the opening of an external gas valve in concomitance with an
ignition request of the boiler burner
In the event the boiler circulator pump is replaced with a traditional fixed
speed circulator pump one must connect the new circulator pump to the
relay board.
Relay 2 not used
In a system divided into zones, relay 2 controls the secondary zone
The relay signals the intervention of a boiler block (Can be coupled to an
external signalling device, not supplied)
The relay signals that the boiler is on and in the heating stage
(Can be coupled with an external circulator pump, not supplied)
Controls the opening of an external gas valve in concomitance with an
ignition request of the boiler burner
Function not available in this boiler model
In the event the boiler circulator pump is replaced with a traditional fixed
speed circulator pump one must connect the new circulator pump to the
relay board.
M5 menu
Description
33
Value
Default set
value by the tech-
nician
-5°C
25°C
P67.2
0 seconds
180 seconds
180 seconds
(3 minutes)
P71.1
AUTO
RELE1-1
RELE2-0