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)
* The wall bracket is only required for the WR 325 K … when mounted directly to combustible construction. The WR
400 K… T2 may be mounted directly to combustible construction.
** 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.
Model A B C D E F G H
400 755 250 155 85
130
diam.
410 320
17 1/4" 29 3/4" 9 3/4" 6" 3 1/4"
5"
diam.
16 1/8" 12 5/8"
460 760 225 130 52
130
diam.
18 1/8" 29 7/8" 8 7/8" 5 1/8" 2"
5"
diam.
WR325
WR400
NA NA
Size, mm Qt.
Natural
29.30kW (100,000Btu/hr) 1.25 diam. 14
Propane 27.83 kW (95,000Btu/hr) 0.79 diam. 14
Natural
26.37kW (90,000Btu/hr) 1.25 diam. 14
Propane 25.05 kW (85,000Btu/hr) 0.79 diam. 14
Natural
1.20 diam. 18
Propane 0.79 diam. 18
Natural
1.20 diam. 18
Propane 0.79 diam. 18
34.28 Kw
(117,000Btu/hr)
30.85 kW
( 105,000Btu/hr)
standard
(0 - 2,000 ft.)
high**
(2,000 - 4,500 ft.)
standard
(0 - 2,000 ft.)
high**
(2,000 - 4,500 ft.)
Main Burner orifices
Model Type of gas Altitude Input
WR325
WR325
WR400
WR400
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