Bosch KBR42-3A Installation And Maintenance Instructions For Contractors

Information about the appliance
21
Greenstar FS/Combi FS – 6 720 810 590 (2020/04)
3.14 Technical data heating boiler KBR 35-3
Table 7
Input / Output Unit NG LPG (Propane)
Max. input rate 180/79 °F (82/26 °C) BTU/hr (kW) 131,900 (38.6) 129,100 (37.6)
Max. output rate 104/86 °F (40/20 °C) BTU/hr (kW) 122,800 (36.0) 122,800 (36.0)
Max. output rate 122/86 °F (50/30 °C) BTU/hr (kW) 121,800 (35.7) 121,800 (35.7)
Max. output rate 176/140 °F (80/60 °C) BTU/hr (kW) 116,700 (34.2) 116,700 (34.2)
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) 35,100 (10.3) 46,100 (13.5)
Max. output rate 122/86 °F (50/30 °C) BTU/hr (kW) 34,800 (10.2) 45,700 (13.4)
Max. output rate 176/140 °F (80/60 °C) BTU/hr (kW) 31,700 (9.3) 42,000 (12.3)
Gas connection value
Natural gas - H
s
=1,010 BTU/ft
3
(37.3MJ/m
3
)ft
3
/hr (m
3
/h) 130 (3.7) -
Liquid Propane Gas - HD-S = 2,500 BTU/ft
3
(37.3MJ/m
3
)ft
3
/hr (m
3
/h) - 52 (1.5)
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 15.7/4.5 15.2/5.6
Flue gas temperature 176/140 °F (80/60 °C) at max./min. nominal output °F ( °C) 162/135 (72/57) 162/135 (72/57)
Flue gas temperature 104/86 °F (40/30 °C) at max./min. nominal output °F ( °C) 127/91 (53/33) 127/91 (53/33)
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 KBR42-3A Specifications

General

Brand	Bosch
Model	KBR42-3A
Category	Boiler
Language	English