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664Y4300.E
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4x Ø 6,5 (M8)
Ø 112
GEnEral
The units are delivered fully assembled, tested and packed on a timber base
with shockproof edges; the package is protected by a heat-shrunk plastic film.
Upon receipt and after unpacking, check the equipment for transport damage.
For transport purposes, refer to the dimensions and weights given below:
MaxiMuM opEratinG conditions
Maximum service pressure (tank full of water)
- Heating circuit:
3 bar
- Hot water circuit:
10 bar
Test pressure (tank full of water)
- Heating circuit:
4.5 bar
- Hot water circuit:
13 bar
Operating temperature
- Maximum temperature: 90°C
wATEr quAlITY
• Chlorides:
< 150 mg/l
• 6 ≤ ph ≤ 8
BurnEr chaMBEr platE
[oil or BloWn Gas]
The burner chamber plate has 4 threads (M 8) for attaching the burner. It is
protected from heat by a blanket insulation.
tECHNICaL CHaraCtErIstICs
GEnEral charactEristics
delta pro &
pro pack 25
delta pro &
pro pack 45
delta pro 55
Input power [Input]
kW
27,9
50,0
61,0
Useful nominal power [output]
kW
26,0
45,0
55,0
Max. useful output 80/60°C
%
89,6
90
90,1
Total capacity
l
158
127,5
151
Primary capacity
l
83
62,5
68
Heating connection
Ø
1" [F]
1" [F]
1" [F]
Domestic hot water connection
Ø
3/4" [M]
3/4" [M]
3/4" [M]
DHW cylinder heat exchange surface
m2
1,59
1,99
2,46
Heating circuit pressure drop
mbar
15
25
37
Flue gas circuit pressure drop
mbar
0,25
0,30
0,45
doMEstic hot WatEr pErforMancE
delta pro &
pro pack 25
delta pro &
pro pack 45
delta pro 55
system operating at 80°c
Peak flow rate at 40°C [ T = 30°C]
l/10'
268
316
362
Peak flow rate at 40°C [ T = 30°C]
l/60'
806
1284
1533
Continuous flow rate at 40°C [ T = 30°C]
l/h
645
1161
1405
tank refill time at 60°c
Initial heating time
Minutes
32
16
16
After drawing off 140 litres at 45 °C
Minutes
15
9
7
