Bosch WR400-1K Series Installation Operation & Maintenance page 2

DIMENSIONS
Figure 1
Maximum hydrostatic water pressure – 1.03 Mpa (150 p.s.i.)
Maximum recommend working pressure – 0.69 Mpa (100 p.s.i.)
Minimum working pressure – 0.0138 Mpa (2 p.s.i.) at 2 Litres/min. (0.5 U.S. Gallons/min) free discharge
Minimum recommended inlet water pressure for use with showers 40 p.s.i.g.
Dimensions in Milimetres (inches)
Model dimensions
milimetres
WR400 - 1
inches
Model Type of gas
Natural
WR400
Propane/LP
Natural
WR400
Propane/LP
* The high altitude ratings listed are Canadian Gas Association high altitude ratings and are only valid in Canada. In the
U.S., the National Fuel Gas Code, ANSI Z223. 1 /NFPA 54, 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 8.
2
A B
460 755 130 diam.
18 1/8 29 3/4 5 1/8 diam.
Altitude
standard
(0 - 2,000 Pieds)
high*
(2,000 - 4,500 Pieds)
D E
740 542
29 1/8 21 11/32
Input
34.28 kW
(117,000Btu/hr)
30.85 kW
( 105,000Btu/hr)
F
Main Burner Orifices
Size, mm
1.20 diam.
0.79 diam.
1.20 diam.
0.79 diam.
Qt.
18
18
18
18