Raypak AVIA 264 - Gas Line Sizing; Maximum Equivalent Pipe Length ft (m); EFFECTS OF LOW GAS PRESSURE

Gas Line Sizing
Maximum Equivalent Pipe Length ft (m)
Natural Gas 1000 BTU/FT
3
0.60SpecicGravity@0.5in.WCPressureDrop
Propane Gas 2500 BTU/FT
3
1.53SpecicGravity@0.5in.WCPressureDrop
Model No.
Size 3/4” Size 1” Size 1-1/4” Size 1-1/2”
NAT PRO NAT PRO NAT PRO NAT PRO
264
15
(4.6)
35
(10.7)
50
(12.2)
125
(38.1)
210
(64.0)
480
(146.3)
445
(135.6)
404
*
15
(4.6)
20
(8.8)
55
(16.8)
95
(29.0)
225
(68.6)
215
(65.5)
280
(85.3)
GAS SUPPLY
EFFECTS OF LOW GAS PRESSURE
• Pulsatingburnerame/Flamelost
• DelayedIgnition/Hardlighto
• Exposure to condensation
• Emissions not at compliance levels
• Damage burner
• Sooting
• Ignition failure
7
*A3/4”gaslinecanbeusedforupto5’(1.5m)maximumlengthfromthegasvalveinadditiontothesedimenttrap.