Unical MODULEX EXT Series User Manual

13
Technical Features
ENGLISH
MODULEX EXT 348 EXT 440 EXT 550 EXT 660 EXT 770 EXT 900
Boiler category II
2H3P
II
2H3P
II
2H3P
II
2H3P
II
2H3P
Modulation ratio 1:15.8 1:19.6 1:24.5 1:29.4 1:34.3 1:39.2
Rated heat output on P.C.I. Qn kW 348 432 540 648 756 864
Minimum heat output on P.C.I. Qmin kW 22
E󰀨ective nominal output (Tr 60 / Tm 80 °C) Pn kW 341.7 424.3 530.4 636.5 742.6 849.0
Minimum e󰀨ective output (Tr 60 / Tm 80 °C) Pn min kW 20.6
E󰀨ective nominal output (Tr 30 / Tm 50 °C) Pcond kW 359.2 445.0 557.8 670.1 783.2 900.3
Minimum e󰀨ective output (Tr 30 / Tm 50 °C) Pcond min kW 23.9
Nominal output performance (Tr 60 / Tm 80°C) % 98.2
Minimum output performance (Tr 60 / Tm 80°C) % 93.5
Nominal output performance (Tr 30 / Tm 50°C) % 104
Minimum output performance (Tr 30 / Tm 50°C) % 109
Performance at 30% of the load (Tr 30°C) 106.8 107.3 107.5 108.3 107.8 107.6
Combustion e󰀩ciency at nominal load % 97.8
Combustion e󰀩ciency with reduced load % 98.5
Casing heat loss with burner on (Qmin) % 5.04
Casing heat loss with burner on (Qn) % 0.1
Net ue gas temperature tf-ta (min)(*) °C 31
Net ue gas temperature tf-ta (max)(*) °C 46.0 46.7 46.7 46.7 46.7 45.8
Maximum permitted temperature °C 100
Maximum operating temperature °C 85
Flue gas mass ow rate (min) kg/h 25
Flue gas mass ow rate (max) kg/h 558 693 866 1040 1213 1386
Excess air % 24.25
Heat loss at chimney with burner on (min) % 1.5
Heat loss at chimney with burner on (max) % 2.40 2.58 2.53 2.51 2.58 2.58
Minimum heating circuit pressure bar 0.5
Maximum heating circuit pressure bar 6
Water content L 67 67 80 94 108 122
Methane gas consumption G20 (sup.p. 20 mbar) at Qn m
3
/h 36.80 45.68 57.10 68.52 79.94 91.36
Methane gas consumption G20 (sup.p. 20 mbar) at Qmin m
3
/h 2.33
Gas consumption G25 (sup.p. 20/25 mbar) at Qn m
3
/h 42.80 53.13 66.41 79.69 92.97 106.25
Gas consumption G25 (sup.p. 20/25 mbar) at Qmin m
3
/h 2.71
Propane gas consumption (sup.p. 37/50 mbar) at Qn kg/h 27.01 33.53 41.92 50.30 58.68 67.01
Propane gas consumption (sup.p. 37/50 mbar) at Qmin kg/h 1.71
Chimney base maximum pressure available Pa 100
Max condensate production kg/h 59.1 73.4 91.7 110 128.4 146.7
Emissions
CO at maximum heat output with 0% of O2 (PCI) mg/kWh 55 72 76 87 72 76
NOx at maximum heat output with 0% of O2 (PCI) mg/kWh 56 52 52 58 55 57
(***) Sound pressure level dB (A) 54 54 54 54 54 56
Electrical data
Power supply voltage/frequency V/Hz 230 / 50
(**) Protection rating IP X5D
Room Temperature = 20°C
(*) Temperature detected with appliance operation ow 80°C / ret. 60°C
CO
2
(min/max) See ‘’NOZZLES - PRESSURE’’ table
Seasonal Energy E󰀩ciency
according to 2009/125 EEC (<=400Kw) η
s
- see ErP table
Leaks upon stop at ∆T 30°C - Pstb - see
ErP table
Electricity consumption on standby - Psb - see
ErP table
(***) at 1 m away in free eld.
(**) The IP protection rating is obtained with the cover down
2.4 - OPERATING DATA AND GENERAL FEATURES
For the adjustment data: NOZZLES - PRESSURE - COLLECTORS - FLOW RATES refer to the paragraph ADAPTATION TO
OTHER TYPES OF GAS.

Unical MODULEX EXT Series Specifications

General

Brand	Unical
Model	MODULEX EXT Series
Category	Boiler
Language	English