LP Conversion, Main Burner Flame Check

9.After reassembling, turn gas on and check all joints for gas leaks using a soapy solution. All leaks must be repaired im- mediately.

Clearances

Measure from face of orifice to the batck side of the manifold,

29.3+_11"5mm "\k,,..k--..j,.,.r_

LP Conversion

the furnace rating plate for the LP conversion accessory kit part

IAn accessory kit shall be used to convert to propane gas use, see number.

CARBON MONOXIDE POISONING HAZARD.

Failure to follow this warning can result in death, property damage and/or personal injury.

NOx inserts for use with Natural Gas units

ONLY. If LP Gas is required, NOx inserts must be removed.

FIRE, EXPLOSION, UNIT DAMAGE HAZARD.

Failure to follow this warning can result in death, property damage and/or personal injury.

An LP conversion accessory kit is required when operating the furnace with LP gas.

*8MPLs and N8MPLs contain NOx inserts.

For LP conversion remove screws that secure the NOx insert and discard insert.

Reinstall screws. See Figure 37

NOTE: It is very important to reinstall the NOx insert mounting screws.

Removing NOx inserts

25-40-03

Main Burner Flame Check

Allow the furnace to run approximately 10 minutes. Then inspect the main burner flames. See Figure 38.

Check for the following:

•Stable and blue flames. Dust may cause orange tips or wisps of yellow, but flames MUST NOT have solid, yellow tips.

•Flames extending directly from burner into heat exchanger.

•Flames do NOT touch sides of heat exchanger

If any problems with main burner flames are noted, it may be nec- essary to adjust gas pressures or check for drafts.

Main Burner

10-10-78

NOTE: For Ignitor location see Figure 39.

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8MPN125J20B1, N8MPL050B12B1, N8MPL100F20B1, 8MPN050B12B1, 8MPL075F16B1 specifications

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