Giersch GIEGA NTG, Assembly, Installation And Maintenance Handbook

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INSTRUCTIONS FOR THE INSTALLER
9.
SPECIFICATIONS
Model GIEGA NTG 24 NTG 33 NTG 43 NTG 53 NTG 63 NTG 74
Efficiency class (Dir. Rend. 92/42CEE)
MAX. Pn= KW 24,0 33,0 43,6 53,0 63,0 74,5
Rated output
MIN. Pn= KW 20,0 28,0 36,0 46,0 55,0 64,0
Nominal thermal capacity MAX. Qn= KW 27,0 36,5 47,9 57,9 68,4 80,5
Efficiency at nominal load % 88,8 90,5 90,9 91,4 92,0 92,5
Efficiency at 30% reduced load % 89,9 91,4 91,7 92,0 92,5 92,8
Outgoing flue gas temperature (20°C) °C 215 190 187 184 175 170
G20 kg/h 49,4 65,7 85,6 102,6 120,6 141,2
Flue gas flow rate
Diesel fuel kg/h 40,0 53,2 69,3 83,1 97,7 114,5
Load loss on water side (
∆
t=20°C) Pa 4800 5600 6000 7100 10000 11200
Minimum water flow rate l/h 680 950 1230 1520 1800 2150
Dispersion through the casing (
∆
t=50°C) Pd= % 1,80 1,40 1,10 0,80 0,70 0,50
Heat loss at stack with burner on Pf= % 9,40 8,10 8,00 7,80 7,30 7,00
Heat loss at stack with burner off Pfbs= % 0,1
Load loss combustion circuit
∆
pf= Pa 8 22 30 32 45 60
Numbers of elements N. 3 4 5 6 7 8
Boiler weight Kg 139 161 188 215 242 269
Width of boiler Mm
Width of combustion chamber Mm 238 344 450 556 662 768
Volume of combustion chamber Dm
3
14,91 22,37 29,83 37,29 44,75 52,21
Volume of flue gas side Dm
3
21,83 31,82 41,72 51,66 61,50 71,52
Water capacity L 14,6 18,2 21,8 25,4 29,0 32,6
Burner fixing diameter Mm 150
Flue gas outlet diameter Mm 150/153
Operating max. pressure Pms Bar 4
Boiler setting range °C 50°÷90°
Water intake/outlet fittings 1"1/4
Fuel G20 gas or fuel oil 1,4°E - 20°C ( NHV 10210 kCal/kg)
Power supply 2N~230V - 50 Hz
10.
OVERALL DIMENSIONS AND FITTINGS (expressed in mm)
1"1/4
564 min.
137
329 134
149 min.
528
MODEL FUEL OIL:
GIEGA NTG 24
GIEGA NTG 33
GIEGA NTG 43
"A"
MODEL GAS:
GIEGA NTG 24
GIEGA NTG 33
GIEGA NTG 43
"B"
MODEL GAS:
GIEGA NTG 53
GIEGA NTG 63
GIEGA NTG 74
18 "A"
600
285 min.
850 min.
Model Model "A" (mm) "A" (mm)
GIEGA NTG 24 GIEGA NTG 24
GIEGA NTG 33
GIEGA NTG 33
GIEGA NTG 74 GIEGA NTG 74
GIEGA NTG 63 GIEGA NTG 63
GIEGA NTG 53 GIEGA NTG 53
GIEGA NTG 43 GIEGA NTG 43
760 760
865
865
910 910
805 805
700 700
970 970
"B" (mm) "B" (mm)
660 660
765
765
870
870