Bosch HDS7152U Installation Instructions - Page 25

Yellow Flames, Yellow Tips on Outer Cones, Soft Blue Flames

Page 25 highlights

Installation Yellow Flames: Further adjustment is required. Yellow Tips on Outer Cones: Normal for LP Gas. Soft Blue Flames: Normal for Natural Gas. If the flame is completely or mostly yellow, verify that the regulator is set for the correct fuel. After adjustment, retest. Some yellow streaking is normal during the initial start-up. Allow unit to operate 4-5 minutes and re-evaluate. Figure 24: Checking Flame Characteristics When correct color, carryover and size are verified, installation is complete. English 23

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Installation
English 23
When correct color, carryover and size are verified, installation is complete.
Figure 24: Checking Flame Characteristics
Yellow Flames:
Further adjustment is required.
Yellow Tips on Outer Cones:
Normal for LP Gas.
Soft Blue Flames:
Normal for Natural Gas.
If the flame is completely or mostly yellow, verify that the regulator is set for the
correct fuel. After adjustment, retest.
Some yellow streaking is normal during the initial start-up. Allow unit to
operate 4-5 minutes and re-evaluate.