ACV Delta Pro 25, Инструкция по установке, эксплуатации и обслуживанию

Страница: 4 / 36

EN • 4
664Y4300.E
E
ngl
is
h
F
R
A
n
Ç
A
is
n
E
D
E
R
l
A
n
D
s
E
s
p
A
ñol
iT
A
l
iA
n
o
D
E
u
T
s
c
h
p
o
l
s
K
i
WorKinG principlE
The Delta Pro boiler is a high performance hot water producer using indirect
heat transfer due to its Tank-in-Tank technology.
At the centre of the Delta Pro there is a stainless steel cylinder through
which the flue tubes pass. It is surrounded by a mild steel shell containing the
primary water (neutral fluid). The outer shell extends down to the combustion
chamber and also surrounds the flue gas tubes. The heat exchange surface is
therefore larger than that of traditional direct fired hot water boilers.
The gas or oil burner heats the primary fluid which indirectly heats the stainless
steel cylinder containing the hot water. As with all Tank-in-Tank systems, the
cylinder is corrugated over its full height and suspended in the boiler by its hot
and cold water connections.
The fact that the cylinder expands and contracts as it is used and that cold
water is not in contact with the intense heat of the burner flame prevents scale
formation. This resistance to scale, along with the anti-corrosion properties of
the stainless steel mean that sacrificial anodes are not needed.
The Delta Pro has a major advantage over other hot water boilers: it heats hot
water with a primary circuit, which allows the primary fluid to also be used
for heating.
standard EquipMEnt
DElTA PrO MODElS 25/45/55 hAVE ThE
FOllOwING COMPONENTS AS STANDArD:
- on/off switch
- summer/winter selector
- thermostat adjustable from 60 °C to 90 °C
- temperature-pressure gauge
- limit thermostat (auto-reset) 95 °C
- manual reset safety thermostat 103 °C
- primary safety valve 3 Bar
- hot water safety valve 7 Bar
- drain down valve
- body fully insulated with rigid polyurethane foam
DElTA PrO PACk MODElS 25/45 hAVE ThE
FOllOwING COMPONENTS AS STANDArD:
- on/off switch
- summer/winter selector
- thermostat adjustable from 60 °C to 90 °C
- temperature-pressure gauge
- limit thermostat (auto-reset) 95 °C
- manual reset safety thermostat 103 °C
- primary safety valve 3 Bar
- hot water safety valve 7 Bar
- manual four-way valve (servomotor available as an option)
- circulator with automatic air eliminator
- primary expansion tank 10 litre
- hot water expansion tank 2 litre
- drain down valve
- body fully isolated with rigid polyurethane foam
optional EquipMEnt
DElTA PrO 25/45 & PrO PACk 25/45
- Balanced flue kit
(except for Delta Pro 55)
- Control Unit kit
(Delta Pro Pack only)
- Servomotor
(Delta Pro Pack only)
construction fEaturEs
CASING
The boiler is covered by a steel casing which has been scoured and phosphated
before being stove enamelled at 220 °C.
BOIlEr BODY
The boiler body containing the primary fluid is constructed with STW 22 steel.
This is tested at a pressure of 4.5 bar (maximum service pressure = 3 bar).
TANk-IN-TANk ACCuMulATOr/hEAT ExChANGEr
The internal ring-shaped inner tank is constructed from Chrome/Nickel 18/8
stainless steel and has a large heat exchange surface area to quickly heat the
water. It is corrugated over its height by an exclusive manufacturing process
and is entirely argon arc welded using the TIG (Tungsten Inert Gas) method.
COMBuSTION GAS CIrCuIT
This includes:
• The flue tubes:
The different DElTA Pro models include, depending on their power, 4 or 8
steel flue tubes with an internal diameter of 64 mm. Each tube is equipped
with a stainless steel turbulator designed to improve thermal exchange and
reduce flue gas temperature.
• The sealed combustion chamber:
The combustion chamber of all the DElTA Pro models is entirely water
cooled.
INSulATION
The boiler body is fully insulated by rigid polyurethane foam with a high
coefficient thermal insulation, sprayed-on without the use of CFCs.
dEscription of thE BoilEr
DElTA PrO 25/45/55 & PrO PACk 25/45 MODElS
1. Flue reduction collar with easy access for servicing
2. Rigid polyurethane foam insulation
3. PVCC dip tube with cold water diffuser
4. Control thermostat and thermometer bulb
5. Burner chamber plate with refractory ceramic fibre
insulation
6. 95 °C cut-off thermostat and manual reset safety thermostat
bulb
7. Flue tubes
8. Turbulators
9. Stainless steel "Tank-in-Tank" hot water cylinder
10. Primary circuit (heating)
11. Combustion chamber
12. Boiler base
13. Heating flow
14. Heating return
15. Domestic hot water outlet
16. Domestic cold water supply
17. Primary hot water safety valve [7 bar]
18. Primary heating safety valve [3 bar]
19. Flue connection Ø 100 mm
20. Drain down valve
DElTA PrO PACk 25/45 MODElS
21. Hot water expansion tank [2 litres]
22. Heating circulator with built-in automatic air eliminator
23. Four-way mixer valve (optional motor)
24. Heating expansion tank [10 litres]
DEsCrIptIoN