Buderus Logano plus GB312 Applications Manual page 8

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Boiler size (output - no. of heat exchanger
sections)
Connection ST (B-kit)
Diameter GAS
Tab. 1 Dimensions and connection sizes
1.2.2 Specifications
Observe all standards and guidelines appli-
cable to the installation and operation of the
heating system in your country. The informa-
tion on the boiler rating plate is definitive and
it is imperative that it is observed.
Boiler size (output - no. of heat exchanger sec-
tions)
Natural gas
I-B-R Input
I-B-R gross output 180/80 ° F
I-B-R net rating 180/80 ° F
Rated heat input 122/86 ° F
(50/30 ° C)
Flue gas mass flow rate 180/80 ° F
Flue gas mass flow rate 122/86 ° F
Flue gas temperature 180/80 ° F
Flue gas temperature 122/86 ° F
CO2 content, natural gas
Available flue pressure
(flue draft + air supply pressure)
Air supply volumetric flow rate
Blower
Honeywell gas valve
Gas injector diameter
Natural gas calorific value 1075 BTU/ft3
Heating water circuit
Boiler water capacity
Primary pressure drop
Maximum flow temperature, heating/hot water
mode (at full output)
High temperature cut-out safety limit (manual
reset high limit setting )
Boiler size (output - no. of heat exchanger sec-
tions)
Permissible operating pressure
Electrical data
Enclosure class
Mains power supply
Power consumption
Maximum permissible fuse rating
Appliance dimensions and weight
Transport clearance dimensions, width x depth x
height
Weight
Tab. 2 Specifications
Model 90 - 4
Model 90 - 4
max. load Btu/hr 328,300
min. load Btu/hr 132,150
max. load Btu/hr 305,000
max. load Btu/hr 265,000
max. load Btu/hr 307,090
min. load Btu/hr 128,050
max. load lb/min 4.85
max. load lb/min 5.05
max. load ° F 83
max. load ° F 120
max. load
%
min. load
in. W.C.
cfm 95
mm
US gal-
4.2
lons
psi
° F
° F
Unit 90 - 4
psi
V/Hz
max. load W 84
min. load W 40
A
Inches 34x25x60
lbs
120 - 4 160 - 5
¾ " N P T
" 1 N P T
120 - 4 160 - 5 200 - 6
440,500 588,300 732,600
132,000 176,000 220,000
409,000 544,000 676,000
356,000 473,000 588,000
409,460 545,940 682,430
127,390 171,190 212,310
6.53 9.14 11.40
7.12 9.29 11.61
90 127 138
133 129 131
fm
9.1
0.4 (100 Pa)
95 130 160
G1G 170
V4730C1071 V4730C1097
17.0
4.2 5.3 6.3
Fig. 4 (graph)
180/180
200
120 - 4 160 - 5 200 - 6
50
IP 40
120 V / 60 Hz
150 190 230
40 45 50
10 (slow blow)
42x25x60
455 530 585
GB312 Applications Manual
200 - 6 240 - 7 280 - 8
" 1 N P
1 ¼ " N P T
240 - 7 280 - 8
880,700 1,028,800
264,000 309,000
810,000 944,000
704,000 821,000
818,910 955,400
255,220 298,140
13.88 16.15
14.02 16.65
140 134
131 135
190 220
V4730C10
63
7.1 7.9
240 - 7 280 - 8
270 370
50 50
50x25x60
665 730
T