ApenGroup Aermax Series, Use, Installation And Maintenance Manual

Page: 47 / 60

47 code HC0100.00GB ed.A-1509
HY
AQUAPUMP HYBRID
HYBRID HEATER
Parameter Menu
The
Par
submenu allows the access to "b" and "d" parameters:
from b1 to b15
burner parameters
from d0 to d9 boiler operation configuration.
For the meaning and the default values, please refer to the
parameter table. Besides "b" and "d" parameters, the following
parameters can be changed:
S1
Modulation probe enabling
SP1
ST1 hysteresis (only if the probe is used as temperature
limit)
tH1
Maximum temperature of the modulation probe,
switches the burner off regardless of the other
conditions set
S2 Not used
P2 Not used
S5
Activates water circuit pressure control
P5
Hysteresis on ST5 value, water pressure.
S6 Activates water flow control
P6 Hysteresis on ST6 value, water flow
H11
Activates circulator speed electronic control
H41
Hysteresis on fumes control.
I/O menu - Inputs outputs
From
I/O
menu it is possible to display the values measured
by the sensors.
NTC1
Water delivery temperature
NTC2
Not used (-10 is displayed)
NTC3
Fumes temperature
An1
0/10V input - if used
PrH
Water pressure in the circuit
FLH water flow in the circuit (multiply by 10)
rPu
no. of FAN revolutions
Pu2
circulator output % value (only if electronic)
uSA
Not used
IOn
Measures the ionization current; 0 to 100 for currents
0 to 2 microamperes, 100 above 2 microamperes
Flt Menu (Fault)
It displays the fault event log; use the arrow keys to scroll the
list of error codes and press
ENTER
to display the historical
value of the selected fault.
The first visible value, rst
, is used to reset the fault event log; this
operation must not be performed by the user but by the service
centre. The reset operation can be carried out by changing the
parameter to 1 and confirming it by pressing and holding ENTER
for at least 3 seconds.
After the reset,
rst
returns to 0.
The list and the meaning of all faults is contained in FAULT table
Fumes temperature control
This function controls that, during flame modulation phase,
the exhaust fumes temperature is near a curve of values set
according to the heat output of the equipment.
To activate it, it is necessary that d5=1; if the NTC3 probe is not
present the PCB signals the fault F43, if d5=0 the PCB signals
the fault F99 "configuration error".
6.9. Exchanger maintenance
Precautions for use
The boiler heat exchanger must be used in the following
conditions:
• The fuel used must have a sulphur content according to
the European standard, namely: maximum peak, for short
periods, 150 mg/m
3 , annual average lower than 30 mg/m 3 ;
• Combustion air must not contain chlorine, ammonia or alkalis;
installation near swimming pools or laundries exposes the
boiler to the effects of such agents;
• Water pH must be within the following limits: 8.2 < pH <
9.5; if the heating system includes aluminium parts, pH must
be lower than 8.5;
• Water hardness, TA, must be within 5°F and 15°F;
•
During the first start-up, the air in the system must be accurately
removed; subsequently, do not close the automatic vent
valves installed as standard on the boiler;
• The use of inhibitors to prevent the exchanger steel oxidation
is absolutely necessary. The antifreeze recommended by
APEN, FERNOX11, serves as inhibitor and preserves the
exchanger from oxidation.
Maintenance
The experience gathered over time about the exchanger by APEN
demonstrates that the annual maintenance of the exchanger
would not be necessary, however the safety regulations require
to perform the following checks on a yearly basis:
• Combustion chamber:
If, during the annual inspection,
some deposits inside the combustion chamber are observed,
it is necessary to aspirate them; if the deposits are strongly
attached, the pipes must be brushed. The use of sharp
objects and the use of acid substances or alkalis is forbidden.
• Insulation:
The insulation of the combustion chamber,
placed in the lower area, must be inspected on a yearly
basis; if signs of deterioration are detected, it must be
compulsorily replaced. In this case the condensation
drain must be checked, because the damage causes the
stagnation of the condensation inside the exchanger.
Checks
During annual maintenance, the following components must
be checked:
• Burner Flange gasket
If gaskets are damaged, they must be replaced.
The silicone gasket of burner flange must be compulsorily
replaced every two years.
Burner
No maintenance is required. If the burner surface is damaged,
replace the burner
Electrodes
Check the position, the absence of alumina deposits and the
integrity of the ceramic. In case of damage, replace the electrode
and the relevant sealing gasket.
N.B.: Use APEN original spare parts only.