AQUAKOND AKY
CONDENSING BOILER
28
code HC0048.10GB ed.B-1811
AKY
Circulator
Filling tap
"C"
AKY050/070/100
AKY032/034
Circulator
Water return tap
"A"
Filling tap
"C"
Water delivery tap
"A"
REFILL:
•
Make sure that connections between the internal and
external units have been carried out correctly, respecting
delivery and return direction;
•
Make sure that automatic vent valves, placed on the
circulator, are open.
For AKY032/034 models:
•
Gradually open "A” cut-off taps (see figure to the side)
located on the boiler delivery and return connections.
For AKY050/070/100 models:
•
After removing the cover from "C" filling tap, connect it, by
means of a 1/2” flexible hose, to a pump for system test
with reservoir filled with water and glycol. Load the mix until
a pressure of approx. 2 bar is reached.
For all models:
•
Vent the pipe;
•
When venting operation is over check, through the display,
that the pressure inside the circuit is greater than 1bar; lower
values will cause an F80 because of the activation of water
minimum pressure switch [calibration 0.6bar].
N
ote: it is compulsory to perform an adequate air bleed
inside the hydraulic circuit, especially if the boiler is
installed higher with respect to the corresponding fan heater.
[See first level menu FRC Section 4.2.4]
Water-glycol mix restoration
In the event of water leakage and/or need to refill the hydraulic
circuit, after having detected and solved any leakages, it is
necessary to restore water-glycol mix by following the instructions
described in “For AKY050/070/100 models” paragraph.
GLYCOL
For its AKY boilers, APEN GROUP tested and recommends
to use
ALPHI 11
glycol by Fernox; the following KITS contain
packs with different capacity:
code
capacity
C07200-05
5 litres
C07200-25
25 litres
The use of glycol having different chemical composition
shall invalidate the exchanger warranty.
N.B. The indicated glycol percentages refer to the parts contained
in the mix (water/glycol) and not in addition to water, e.g.: a
10-litre mix with 30% glycol is composed of 7 litres of water
(70%) and 3 litres of glycol (30%).
N
ote: Glycol percentages and limit temperatures
indicated on page 17 have information purposes; we
remind that the boiler is certified for use with external
temperatures up to, and not exceeding, -15°C.
Expansion reservoir
•
The reservoir pre-charge pressure must be the same as
the system's refill value;
•
Before refilling the circuit check the expansion reservoir
pre-charge pressure.
