Maintenance; Adjustments; Heat Request Type; Gas Valve Calibration - Riello Residence Condens IS n Installer And User Manual

T.outlet envisaged - Tshift
TMR =
20 - min. design external T.
Tshift = 30°C standard system
25°C floor installations.
If the calculation produces an intermediate value between two
curves, you are advised to choose the compensation curve nearest
the value obtained.
Example: if the value obtained from the calculation is 1.3, this is be-
tween curve 1 and curve 1.5. Choose the nearest curve, i.e. 1.5.
The selection of the thermoregulation curve must be carried out by
acting on the trimmer TMR (5a) accessible under the control panel.
The settable TMR values are as follows:
- Standard system: 1.0-1.5-2.0-2.5-3.0
- Floor installation: 0.2-0.4-0.6-0.8.
HEAT REQUEST TYPE (modifiable parameter with remote
control only) (fig. 37-38-39)
If an ambient thermostat is connected to the boiler (parameter 51 =
0 - factory default setting)
The heat request is made by the closure of the room thermostat con-
tact, while the opening of the contact produces a switch-off. The de-
livery temperature is automatically calculated by the boiler, although
the user may interact with the boiler. Using the interface to modify
the HEATING (2a), you will not have the HEATING SET-POINT val-
ue available, but a value that you can set as preferred between +5
and -5°C. The modification of this value will not directly modify the
delivery temperature, but will automatically affect the calculation that
determines the value of that temperature, altering the reference tem-
perature in the system (0 = 20°C).
If a remote control is connected to the boiler (type REC 08)
When the heat request is made by the REC remote control, the ther-
moregulation is managed by the said remote control (refer to the spe-
cific instruction manual for this product).
4.10

Maintenance

Periodic maintenance is essential to the safety, efficiency and lifetime
of the boiler.
It allows for the reduction of consumption, polluting emissions and
keeping the product reliable over time.
Before starting maintenance operations:
- perform the analysis of the combustion products to check the boiler
operation status then cut the electrical supply by turning off the
system's general switch (fig. 40).
- turn off the fuel and water taps of the heating and domestic hot
water system.
After performing the necessary maintenance operations, the
original adjustments must be restored and the combustion
product analysis must be performed to check the correct oper-
ation.
After routine and extraordinary maintenance operations have
been carried out, fill the siphon, following the instructions in the
section "First commissioning".
4.11

Adjustments

The RESIDENCE CONDENS IS n boiler is provided for operation
with Methane gas (G20) and is factory set as shown on the rating
plate.
If adjustments have to be redone, for example after extraordinary
maintenance, after the gas valve replacement or after conversion
from methane gas (G20) to propane (G31) or vice versa, the follow-
ing procedures must be followed.
The adjustments of the maximum and minimum output, the
maximum heating and the slow ignition, must be carried out in
the sequence indicated and exclusively by the Technical Assis-
tance Service.
- Power the boiler.
- Set the mode selector to
- Unscrew the 4 Allen screws (A) and remove the control panel B
(fig. 42).
- Act on the trimmers in the sequence indicated below and adjust
them until the values shown in the table are achieved (fig. 43):
(off/reset) (fig. 41)
1. MAX (1a) maximum number of fan rotations
Table 1
Maximum number of
DHW fan rotations gas (G20)
30 IS n
2. MIN (2a) minimum number of fan rotations
Table 2
Minimum number
of fan rotations
gas (G20)
(heating/dhw).
30 IS n
MIN (2a) minimum number of fan rotations in the case of collective
smoke pipes under pressure (with specific accessory only)
Minimum number
of fan rotations
gas (G20)
(heating/dhw).
30 IS n
3. IGN (4a) slow ignition
The slow ignition IGN must be strictly adjusted after the calibra-
tion of all other trimmers.
Table 3
Fan rotations with
slow ignition gas (G20)
30 IS n
4. HTG (3a) maximum number of heating fan rotations
Table 4
Maximum number of
heating fan rotations gas (G20)
30 IS n

GAS VALVE CALIBRATION

- Open the gas tap.
- Set the mode selector to
- Press the combustion analysis button CO.
- Wait for the burner to fire. "CO" is displayed on the digit and the
boiler operates at the maximum heating output. The chimney
sweep function is active for a time limit of 15 minutes; the burner
shuts down if an outlet temperature of 95° C is reached. It will ignite
again when the temperature falls below 75° C.
- Insert the analyser probes in the specific positions on the air distri-
bution box, after removing screw C and cap D (fig. 44)
- Turn the HTG trimmer clockwise until the number of revolutions
foreseen for maximum DHW output is reached (see table 1).
- Check the CO value: if the value does not comply to that indicated
2
in the table, turn the adjustment screw of the gas valve maximum
output (clockwise to decrease) until the required value is reached.
Max. CO
2
gas (G20)
30 IS n
- Turn the HTG trimmer anti-clockwise until the number of revolu-
tions minimum output is reached (see table 2).
- Check the CO value: if the value does not comply to that indicated
2
in the table, turn the adjustment screw of the gas valve minimum
output (clockwise to increase) until the required value is reached.
Min. CO
2
gas (G20)
30 IS n
- Return the HTG trimmer to the number of revolutions of the maxi-
mum heating output (see table 4).
- Exit this function by turning the extension under the knob 1a to
(winter) or (summer), then position it back on
(fig. 45).
- Remove the analyser probe and close the combustion analysis
socket with the screw.
Methane Liquid gas
propane (G31)
56 56
Methane Liquid gas
propane (G31)
14 14
Methane Liquid gas
propane (G31)
19
Methane Liquid gas
propane (G31)
33 33
Methane Liquid gas
propane (G31)
47 47
(off/reset) (fig.40)
Methane Liquid gas
propane (G31)
9,0 10,0
Methane Liquid gas
propane (G31)
9,0 10,0
ENGLISH
rpm
rpm
rpm
rpm
rpm
%
%
(off/reset)
13