AQUAKOND AKY
CONDENSING BOILER
15
code HC0048.10GB ed.B-1811
AKY
3.4. INAIL components
SAFETY, PROTECTION AND CONTROL DEVICES
component
abbreviation model
description
hydrometer
IDROM PB3204BB06
pressure gauge class UNI2.5, scale 0-4bar
WATTS INDUSTRIES
p
max,es.=
+25% f.s., T=-20/90°C compliant with INAIL
limit pressure switch
IPMAX PMR/5-R2
pressure switch p=1÷3bar
ITALTECNICA
INAIL approval certificate No. 0605/10/EC
minimum pressure switch IPMIN LPR/5
pressure switch p=0,5÷1.7bar
ITALTECNICA
INAIL approval certificate No. 0206/08/EC
ITALTECNICA
INAIL approval certificate No. PS/001/10
inspection well
PIT
PGUA0TT003
control well L=45mm, 1/2” connection
WATTS INDUSTRIES
compliant with INAIL
3-way control valve
R3VIE 403R14
3-way valve, 1/4” connection,
WATTS INDUSTRIES
T
max,es
=90°C, P
max,es
=15bar compliant with INAIL
thermometer
TERM PT4A507011
1/2" connection with well
WATTS INDUSTRIES
T=0/120°C accuracy class UNI 2, compliant with INAIL
expansion reservoir
VE
13S6001006
10-litre capacity, 3/4” connection,
pre-charge 0.75bar
ZILMET
P
max,es
=3bar, T
max,es
=99°C certified 97/23/EC directive
safety valve
VS
527427
1/2"Fx3/4"F connections, 2.7 bar calibration, 15-mm diameter,
CALEFFI 152.2 kW drain output. Tmax=110°CV
INAIL approval certificate No.VS/319/00
safety thermostat
TS
2BD
NC contact thermostat, opening T=90±3°C,
T&P
closing T=80±4°C,
IMQ CA02.02231 certified
NOTE: Water circuit test
According to INAIL standard, the boiler body is tested at a pressure of 4.5 bar, i.e. 1.5 times the maximum working pressure.
NOTE: Distance between the expansion reservoir and the safety valve [AKY050/070/100 only].
According to INAIL standard, the distance between the expansion reservoir centreline surface and the safety valve centreline
surface is 450mm.
NOTE: Fuel cut-off valve [AKY050/070/100 only].
In case of equipment above 35kW, INAIL standard
compulsorily requires
that a fuel cut-off valve must be used. The boiler is
equipped with the well for the sensitive component of the fuel cut-off valve: the valve kit is available as an accessory (code C09073).
This well is suitable for the Caleffi fuel cut-off valve;
to use other valves it is necessary to check their coupling.
NOTE: Expansion reservoir
All boilers are equipped with a 10-litre expansion reservoir, whose pre-charge is 1.0 bar (1.3 bar for AKY050/070/100).
When the system water content exceeds 65-70 litres, an expansion reservoir with suitable capacity must be added.
Boiler water contents are summarised below; as far as pipes are concerned, refer to page 17 in this manual.
WATER CONTENT
Boiler
AKY032 3.5 litres
Boiler
AKY034 4.0 litres
Boiler
AKY050 6.3 litres
Boiler
AKY070 7.0 litres
Boiler
AKY100 9.0 litres
