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3.1.6
Minimum clearance from combustibles.
Table 11
MODEL
HORIZONTAL
60
0
ABOVE
BELOW
SIDE
FRONT
BACK
FRONT
BACK
Ultra 7 & 7/3.5
670
670
950
225
1000
1340
670
Ultra 14 & 14/7
1000
1000
2000
335
1000
2840
1255
Ultra 21 & 21/10.5
1365
1365
2480
365
1090
3080
1365
Ultra 28 & 28/14
1510
1510
2590
405
1210
3680
1670
Ultra 42 & 42/21
2260
2260
3890
500
1505
5520
2510
3.2
Gas Supply
3.2.1
Natural Gas - G20 at 20mbar nominal supply pressure (appliance cat 2H).
Model Max. Supply Pressure
Min Supply Pressure
Setting Pressure
Gas Connection
Ultra 7
25 mbar
17 mbar
19.0 mbar
Rc - ½
Ultra 14
25 mbar
17 mbar
18.8 mbar
Rc - ½
Ultra 21
25 mbar
17 mbar
18.7 mbar
Rc - ½
Ultra 28
25 mbar
17 mbar
18.2 mbar
Rc - ½
Ultra 42
25 mbar
17 mbar
17.5 mbar
Rc - ½
3.2.1.1 Installation pipes should be fitted in accordance with National and Local Regulations. Pipes of a smaller size than
the appliance connection (Rc - ½) should not be used and the pipework must be designed to achieve the nominal
gas supply pressure of 20 mbar, measured at the appliance inlet pressure test point.
A union service cock MUST be fitted as close as practicable upstream of the appliance to enable the gas train to be
removed for maintenance or repair.
It is essential to provide a flexible metallic hose, which must conform to National or Local Regulations, to connect the
appliance to the gas supply. Minimum size to be ½" (12.7mm) bore.
3.2.2
LPG - G31 (Propane) at 50mbar nominal supply pressure (appliance cat 3P).
Model Max. Supply Pressure Min Supply Pressure Setting Pressure Gas Connection
Ultra 7
57.5 mbar
42.5 mbar
50.0 mbar
Rc - ½
Ultra 14
57.5 mbar
42.5 mbar
50.0 mbar
Rc - ½
Ultra 21
57.5 mbar
42.5 mbar
50.0 mbar
Rc - ½
Ultra 28
57.5 mbar
42.5 mbar
50.0 mbar
Rc - ½
Ultra 42
57.5 mbar
42.5 mbar
50.0 mbar
Rc - ½
Содержание Ultra 14
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