Instruction manual

17
Instructions for the installer
The condensate drain system must be:
- built in order to prevent the products of combustion di-
scharging in the ambient or in the sewage(siphon);
- sized and built so as to permit the correct flow of the liquid
discharges preventing any eventual leakages;
- installed in such a way to prevent the liquid contained
inside freezing in cold weather
- The condensate, before being evacuated to the sewer,
has to be neutralized, neutralisation which can be obtai-
ned by mixing the drain water coming from washing ma-
chines, dish washers etc., which normally have a base
pH.
To maintain proper flow of condensate the drain pipe must
have an inclination toward the drain of at least 30 mm/m
(3/8 in./ft). The liquid column inside the condensate siphon
needs to be filled with water after installation. Its minimum
height when all the fans are in operation must be at least
25 mm (1 in).
Given the acidity degree (pH 3 to 5 ) only plastic material
can be used for the condensation evacuation pipes (spe-
cial optional neutralization kits are available on request).
* Minimum height safety siphon required by the Standard
** Minimum height with boiler running at maximum output
If the boiler is not installed on a plinth then it can be fitted
directly onto the boiler floor and than a deep well of at
least 100 mm will be required to house the siphon.
3.8 - CONDENSARE DRAIN
Any neutralization devices can be connected to the conden-
sate after the trap.
For the calculation of the neutralization of the charge must be
assessed the state of wear of the neutralizer after a year of
operation.
Based on this information you can extrapolate the total dura-
tion of the charge.
For the neutralization of the condensate neutralizer kits are
available NH 300 and NH 1500-P.
KIT NEUTRALIZATION NH 300 - code 00262827
L 'NH neutralization unit 300 is designed to:
- Appliances with power up to 300 kW
- Works well with condensate drain the boiler placed lower
down the condensate drain the boiler.
This unit does not require neutralization of the electrical con-
nections.
KIT NEUTRALIZATION NH 1500-P - code 00262829
The 'unit of neutralizing NH 1500-P is designed to:
- Appliances with power up to 1500 kW
- Works well with condensate drain the boiler placed higher
condensate drain the boiler.
This unit requires the neutralization of electrical connections.
Flue chamber
Base (H min 100 mm)
To the condensate
drain
The upper part of the drain pipe
must not be higher then the tray bottom
Boiler room floor
Initial trap
filling-up plug