23
2.3. Hydraulic diagram
fig. 4
1.
Condensate draining syphon
2.
Modulating gas valve
3.
Safety thermostat
4.
Delivery line temperature sensor
5.
Modulating fan
6.
Condensing primary exchanger
7.
Fumes temperature probe
8.
Ignition and detection electrode
9.
Expansion vessel
10.
Fan control sensor
11.
Return line temperature sensor
12.
3 bar safety valve
13.
Pressure transducer
14.
Air draining system
15.
Circulator
16.
Drain cock
17.
Supply valve
18.
Flow meter with cold water filter
19.
Secondary plate exchanger
20.
Temperature sensor for domestic use hot
water
21.
Integrated automatic by-pass on the plate
heat exchanger
22.
3-way motorised valve
S
Condensate drain
G
Gas inlet
M
Heating system delivery line
C
Hot water for domestic use outlet
F
Hot water inlet
R
Heating system return line
Play Entry 20
2.4. Technical data on the operation
The pressures inside the burner shown in the following page must be checked after the boiler has run for 3 minutes.
Production of hot water for domestic use with ΔT 45°C = 8 l/min
Production of hot water for domestic use with ΔT 40°C = 9 l/min
Production of hot water for domestic use with ΔT 35°C = 10 l/min
Production of hot water for domestic use with ΔT 30°C = 11 l/min
Production of hot water for domestic use with ΔT 25°C = 14 l/min
Play Entry 20
Function
Heating thermal
capacity
[kW]
Heating thermal
capacity
(80-60°C)
[kW]
Heating thermal
capacity
(50-30°C)
[kW]
Supply
pressure
[mbar]
O
2
value
of the fumes
[%]
CO
2
value
of the fumes
[%]
min
max
min
max
min
max
From
To
From
To
G20 methane gas
2.8
20
2.5
19.2
2.9
20.7
20
5,7
4,0
8,5
9,5
GPL Gas
2.8
20
2.5
19.2
2.9
20.7
30/37
5,9
4,5
10,0
10,9
Table 5: Play Entry 20 Calibration data
