Bosch WR430-3K Installation Operation & Maintenance page 3

DIMENSIONS
Figure 1
Maximum Hydrostatic water pressure - 1.03 MPa (150 p.s.i.)
Maximum recommended working pressure - 0.69 MPa (100 p.s.i.)
Minimum working pressure - 0.09 MPa (13 p.s.i.) no piping attached
Reccomended pressure for showers and domestic, 0.27 MPa (40 p.s.i.)
Model Type of Gas
natural gas
WR430-3.K..
propane
• The high altitude ratings listed are Canadian Gas Association high altitude ratings and are valid only in Canada. In the U.S., the
National Fuel Gas Code, ANSI Z223.1-1988, recommends for high altitude installations above 2,000 feet, that the input rate be
reduced 4% for each 1,000 feet above sea level. - See page 14.
Altitude Input
0 - 2 000 ft 130 000 Btu/hr (38 kW)
2 - 4 500 ft 116 000 Btu/hr (34 kW)
0 - 2 000 ft 125 000 Btu/hr (36 kW)
2 - 4 500 ft 112 000 Btu/hr (33 kW)
EXTERIOR
TERMINATION
Main Burner Orifices
Size, mm Qt.
1.20 diam. 18
0.79 diam. 18
1.20 diam. 18
0.79 diam. 18
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