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7. TECHNICAL INFORMATION
Certification 63AT4528
Category II2H3B/P
Thermal Capacity min/max kW 8/24
Usable Thermal Power min/max (30/40°C) kW 8.8/26.1
Usable Thermal Power min/max (60/80°C) kW 7.9/23.3
Usable Thermal Power min/max (30/50°C) kW -/24.5
Power for Hot Water Production min/max kW 7.9/23.3
Efficiency at Nominal Thermal Capacity (30/50°C) % 102.2
Efficiency at 30% of Nominal Thermal Capacity (47°C of return) % 96.4
Efficiency at 30% of Nominal Thermal Capacity (30°C of return) % 103.6
Gas Consumption after 10 Minutes* m
3
0.42
Maximum Heat Loss to the Casing (∆T=50°C) % 0.6
Flue Heat Loss with Burner Operating % 2.1
Flue Heat Loss with Burner Off % 0.2
Maximum Discharge of Fumes Kg/h 35.1
Maximum Temperature of Discharge Fumes °C 66.7
Temperature of Discharge Fumes when Heating 30/40°C (1 m of coax.) °C 42.9
Minimum Room Temperature °C5
Heating Temperature min/max (High Temperature range) °C 42/82
Heating Temperature min/max (Low Temperature range) °C 30/75
Temperature of Water for Domestic Use min/max °C 36/56
Class NOX 5
CO
2
Content % 9.3
O
2
Content % 4
CO Content ppm 53.5
Inlet Pressure/Methane Gas G20 (boiler at maximum) mbar 20
Inlet Pressure/Liquid Gas G30 - G31 (boiler at maximum) mbar 30
Residual Discharge Head mbar(Pa) 0.65(64)
Maximum Head Loss on Water Side (∆T=20°C) mbar 200
Residual Head of System (60/80°C) bar 0.2
Maximum Heating Pressure bar 3
Maximum Water Content in System l 130
Expansion Vessel Capacity l 7
Expansion Vessel Pre-load Pressure bar 1
Pressure of Water for Domestic Use min/max bar 0.2/8-10
Nominal Capacity of Hot Water for Heating (residual head 0.25 bar) l/h 820
D.H.W. Flow Rate: ∆T=25°C l/min 13.4
∆T=30°C l/min 11.1
∆T=35°C l/min 9.6
D.H.W. Flow Minimum Rate l/min 2.5
Quantity of Condensed Water with a (30/40°C) l/h 1.8
pH Condensation Value 3.5÷4
Electrical Supply V/Hz 230/50
Power Consumption W 130
Protection Grade of Electrical System IP 4XD
Internal Fuse Rating A 3.15 SLOW
Width mm 465
Height mm 890
Depth mm 385
Central Heating Connections BSP 3/4
Domestic Hot Water Connections BSP 1/2
Gas Connection BSP 3/4
Net Weight Kg 45
G.C. Number 41-116-17
63AT4528
II2H3B/P
8/24
8.8/26.1
7.9/23.3
-/24.5
7.9/23.3
102.2
96.4
103.6
0.42
0.6
2.1
0.2
35.1
66.7
42.9
5
42/82
30/75
36/56
5
9.3
4
53.5
20
30
0.65(64)
200
0.2
3
130
7
1
0.2/8-10
820
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1.8
3.5÷4
230/50
130
4XD
3.15 SLOW
465
890
385
3/4
1/2
3/4
44.5
41-116-03
24 MFFI 24 RFFI SYSTEM
*Calculated at 70% maximum output
23 99 84 1439 112
Manufacturer: Merloni TermoSanitari SpA - Italy
Commercial subsidiary: MTS (GB) LIMITED
MTS Building
Hughenden Avenue
High Wycombe
Bucks HP13 5FT
Telephone: (01494) 755600
Fax: (01494) 459775
Internet: http://www.mtsgb.ltd.uk
E-mail: info@mtsgb.ltd.uk
Technical Service Hot Line: (01494) 539579