Bosch KBR28-3A User Manual

Information about the appliance
Greenstar FS/Combi FS – 6 720 810 590 (2020/04)
22
3.15 Technical data heating boiler KBR 42-3
Table 8
Input / Output at elevation 0 - 2000 feet (0 - 610 metres) Unit NG LPG (Propane)
Max. input rate 180/79 °F (82/26 °C) BTU/hr (kW) 151,600 (44.4) 148,300 (43.5)
Max. output rate 104/86 °F (40/20 °C) BTU/hr (kW) 137,500 (40.3) 137,500 (40.3)
Max. output rate 122/86 °F (50/30 °C) BTU/hr (kW) 137,500 (40.3) 137,500 (40.3)
Max. output rate 176/140 °F (80/60 °C) BTU/hr (kW) 134,400 (39.4) 134,400 (39.4)
Max. input rate 180/79 °F (82/26 °C) BTU/hr (kW) 36,000 (10.5) 46,400 (13.6)
Max. output rate 104/86 °F (40/20 °C) BTU/hr (kW) 35,500 (10.4) 46,400 (13.6)
Max. output rate 122/86 °F (50/30 °C) BTU/hr (kW) 35,100 (10.3) 46,100 (13.5)
Max. output rate 176/140 °F (80/60 °C) BTU/hr (kW) 31,700 (9.3) 24,000 (12.3)
Input / Output at elevation 2000 - 4500 feet (611 - 1372 metres)
Max. input rate 180/79 °F (82/26 °C) BTU/hr (kW) 136,440 (40.0) 139,402 (40.9)
Max. output rate 104/86 °F (40/20 °C) BTU/hr (kW) 123,750 (36.3) 129,250 (37.9)
Max. output rate 122/86 °F (50/30 °C) BTU/hr (kW) 123,750 (36.3) 129,250 (37.9)
Max. output rate 176/140 °F (80/60 °C) BTU/hr (kW) 120,960 (35.3) 126,336 (37.0)
Input / Output at elevation 4500 - 7000 feet (1373 - 2143 metres)
Max. input rate 180/79 °F (82/26 °C) BTU/hr (kW) 125,828 (36.9) 129,021 (37.8)
Max. output rate 104/86 °F (40/20 °C) BTU/hr (kW) 114,125 (33.5) 119,625 (35.1)
Max. output rate 122/86 °F (50/30 °C) BTU/hr (kW) 114,125 (33.3) 119,625 (35.1)
Max. output rate 176/140 °F (80/60 °C) BTU/hr (kW) 111,552 (32.7) 116,928 (34.3)
Gas connection value
Natural gas - H
s
=1,010 BTU/ft
3
(37.3MJ/m
3
)ft
3
/hr (m
3
/h) 149 (4.2) -
Liquid Propane Gas - HD-S = 2,500 BTU/ft
3
(37.3MJ/m
3
)ft
3
/hr (m
3
/h) - 59 (1.7)
Permissible gas inlet pressure
NG in. W.C. (mbar) 3.5 - 10.5” (8.7-26.1) -
LPG (Propane) in. W.C. (mbar) - 8-13” (19.9-32.3)
Flue gas
Flue gas mass flow at maximum/minimum nominal output gps 18.0/4.5 17.5/5.6
Flue gas temperature 176/140 °F (80/60 °C) at max./min. nominal output °F ( °C) 171/135 (77/57) 171/135 (77/57)
Flue gas temperature 104/86 °F (40/30 °C) at max./min. nominal output °F ( °C) 133/91 (56/33) 133/91 (56/33)
CO
2
at maximum nominal output % 9.4 11.0
CO
2
at minimum nominal output % 8.6 10.4
Condensate
Maximum condensate quality (t
R
= 86 °F (30 °C)) gph (l/h) 0.32 (1.2) 0.32 (1.2)
pH level approx. 4.8 4.8
General
Voltage Vac 120 120
Frequency Hz 60 60
Max. power consumption (central heating mode) W 205 205
Max. power consumption (standby mode) W <6 <6
Sound pressure level dB (A) ≤33 ≤33
Max. supply temperature °F ( °C) 190 (88) 190 (88)
Max. permissible operating pressure (P
MS
) heating psi (bar) 30 (2.07) 30 (2.07)
Permissible ambient temperature °F ( °C) 32-122 (0-50) 32-122 (0-50)
Nominal water capacity (heating) Gall (L) 0.925 (3.5) 0.925 (3.5)
Weight (without packaging) lbs (kg) 150 (68) 150 (68)
Maximum overall dimensions W x H x D inch (mm) 21
15
/
16
x 41
1
/
4
x 21
7
/
8
557 x 1048 x 555
21
15
/
16
x 41
1
/
4
x 21
7
/
8
557 x 1048 x 555

Bosch KBR28-3A Specifications

General

Brand	Bosch
Model	KBR28-3A
Category	Boiler
Language	English