Installation | 4020 Nozzle-Mix Pilot Tip
Pressure gauges or taps
Observation port
Pressure gauges or taps
Observation port
P
P
Air from burner body = 0.1-1.0 osi
Air pres. = 4.0-16 osi
Limiting orifice gas valve Gas pressure = air pressure at approx. 100% excess fuel
Limiting orifice gas valve Gas pressure = 3x-6x air pressure
P
Suggested piping arrangement for 4020-LP
Suggested piping arrangement for 4020-HP/CB
¾ " Observation port
Pilot Accessories (Optional) 4-5635-1
Air flow adjustment
Spark Plug with Purge Holes Manual Light Plug (#8 DRILL)
Air pres. = >4.0 osi
OA2-0401-1 4-20667-1 R590-8545 R930-4066 R930-6055
Orifice/valve
"HP" Air Orifice/Valve for -0 HP only Pipe Tee 1" ¾ " ¾ " -0 HP only
P
1⁄8 " Gas Valve for -0 tips 3⁄8 " Gas Valve for -2, -3 tips ½ " Gas Valve for -4, -5 tips ¾ " Gas Valve for -6 tips
Gas
1807-01 1807-0
Small needle valve
Suggested piping arrangement for 4020-0-HP (with orifice)
1807-1
1" Gas Valve for -7 tips
NPT TO BSPT ADAPTERS FOR 4020 GAS INLET CONNECTION
Part Number
Description
R590-0210 R590-0211 R590-0212 R590-0213 R590-0220 R590-0221 R590-0223
316 Stainless Steel adapter, male 1⁄8 " NPT to female 1⁄8 " BSPT 316 Stainless Steel adapter, male ¼ " NPT to female ¼ " BSPT 316 Stainless Steel adapter, male 3⁄8 " NPT to female 3⁄8 " BSPT 316 Stainless Steel adapter, male ½ " NPT to female ½ " BSPT 316 Stainless Steel reducing adapter, male 1⁄8 " NPT to female ¼ " BSPT 316 Stainless Steel reducing adapter, male ¼ " NPT to female 3⁄8 " BSPT 316 Stainless Steel reducing adapter, male ½ " NPT to female ¾ " BSPT
NPT
BSPT
Bulletin 4020 Page 5
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