Robur GAHP-W, Инструкция по установке, эксплуатации и обслуживанию, Страница: 27 / 68

Overview and technical specifacions
Ed. 2014-08
25
The appliance and its gas connection must be leak tested before placing it in
operation. Purge all air from gas lines.
Do not use an open flame to check for leaks. An open flame could lead to
explosion, which could result in property damage, serious injury or death.
Vertical gas pipes must be equipped with a siphon with a drain for the condensate. It may
also be necessary to insulate the gas pipe to prevent the formation of excessive
condensate.
Supplying gas to the appliance at higher pressures than those indicated above can
damage the gas valve, which could result in property damage, serious injury or
death.
This appliance is orificed for operation up to 3,000 feet altitude. Consult the factory for
installations above 3,000 feet elevation. Conversions for operation at high altitude must be
performed by factory authorized personnel only.
INLET GAS PRESSURE
For natural gas the maximum inlet gas pressure must not exceed 14” w.c.
The minimum inlet gas pressure is 5” w.c.
For LPG the maximum inlet gas pressure must not exceed 14” w.c. The minimum inlet
gas pressure is 11” w.c.
MANIFOLD GAS PRESSURE
SPECIFIC GRAVITY OF NATURAL GAS
BTU CONTENT PER CU.FT.
0,55 0,6 0,65 0,7
950 3,15 3,43 3,72 4,01
975 2,99 3,26 3,53 3,80
1000 2,84 3,10 3,36 3,61
1025 2,70 2,95 3,20 3,44
1050 2,58 2,81 3,04 3,28
1075 2,46 2,68 2,90 3,13
1100 2,35 2,56 2,77 2,99
1125 2,24 2,45 2,65 2,86
OUR REFERENCE:
SPECIFIC GRAVITY OF NATURAL GAS
BTU CONTENT PER CU.FT.
0,555
1014 2,8 IN. W.C.
Table 13 - Manifold pressure based on gas input of 95,500 Btu/hr USING 0.21” orifice.
GAS TYPE NATURAL GAS LP GAS
MANIFOLD PRESSURE
2.8 WC INCHES 5.1 WC INCHES
NOZZLE DIAMETER
0.21” 0.14”
Table 14 - Manifold pressure and nozzle diameter.