Service manual

7
* Minimum operation pressure and flow based on temperature set point and inlet water conditions.
Model
HD50e 26i - HD50i
Units
Installation External Internal
G20 Nat Gas Press Low 1.29 1.75 mbar
G20 Nat Gas Press High 6.81 9.35 mbar
G31 Propane Press Low 2.21 2.36 mbar
G31 Propane Press High 11.2 11.1 mbar
Flue System Direct Forced Exhaust Forced, Room Sealed
Temp. Range Controllers 37-46, 48, 50, 55, 60, 65, 75 °C
Temp. via dip switches 40, 42, 50, 55, 60, 65, 75, 85 °C
Ignition Direct Electronic Ignition
Gas Consumption & Capacities min conditions ( H
i
= net calorific value H
s
= gross calorific value )
G20 Nat Gas: Input Q
m:
Hi/Hs | Useful output P
m
3.93/4.36 | 3.49 3.93/4.36 | 3.49 kW
G20 Nat Gas flow V 0.42 0.42 m
3
/hr
G31 Input Q
m
: Hi/Hs | Useful output P
m
4.01/4.36 | 3.49 4.01/4.36 | 3.49 kW
G31 flow normal operating conditions M
m
0.31 0.31 Kg./hr
Gas Consumption & Capacities nominal condit.
( H
i
= net calorific value H
s
= gross calorific value )
G20 Nat Gas: Input Q
n
: Hi/Hs | Useful output P
n
49.8/55.3 | 45.9 48.6/54.0 | 44.8 kW
G20 Nat Gas flow ref. conditions V
r
5.27 5.14 m
3
/hr
G31 Input Q
n
: Hi/Hs | Useful output P
n
50.9/55.3 | 45.9 49.7/54.0 | 44.8 kW
G31 flow normal operating conditions M
n
3.95 3.86 Kg./hr
Country of destination GB/IE
Gas category and pressure I
2H
G20-20mbar / I
3P
G31-37mbar
Type A3 Outdoor C13/33 Indoor
Max Flow 32 32 L/min
Min Operation Flow ON = 2.4* / OFF = 1.7* ON = 2.4* / OFF = 1.7* L/min
Water Pressure (P
w
) 1.4* - 10.0 bar
Power Supply 230 V / 50 Hz
Electric Consumption (normal/stand-by/anti-frost) 50 / 2 / 100 66 / 2 / 100 Watts
Noise Level 50 50 dB (A)
Ignition safety time T
SAmax
4.2 Sec.
Weight 23 24 Kg.
TECHNICAL DETAILS