16. Check for Gas Leaks
Brush a soapy water solution on each connection in the
main gas and pilot gas lines. Look for bubbles. If there
are any gas leaks, shut off the main gas supply and fix
any leaks before continuing. Repeat steps 1 through 6.
Do not use a match or other types of fire to locate a gas
leak.
17. Adjust The Burners
Forced draft burners can only be properly set up by
using combustion test equipment. These burners cannot
be set up on how the flame looks. Refer to the burner
manual in the product literature section for proper carbon
monoxide, carbon dioxide, and excess oxygen levels.
18. Burning Tuning Objectives
The following measures are approximations only. Data
may vary by location, environment, fuel, gas pressure,
BTU content and more.
REFER TO BURNER
NAMPLATE AND BURNER MANUAL FOR MORE
SPECIFIC INSTRUCTIONS,
including low-NOx burner
instructions for California and Texas.
Required Gas
Maximum 14" w.c.
Pressure
Required Gas
Minimum varies by
Pressure
burner
Manifold Pressure
See burner nameplate
02
4.5% to 7.5%
CO2
8% to 10%
co
Less than 1 00 ppm
NO
x
Less than 60 ppm
Stack Temperature
425
°
F to 475
°
F
Efficiency
80% to 83%
14
19. Pressuretrols
Allow the boiler to reach its operating pressure. Check
the pressuretrols to be certain they're are set as
described and functioning properly.
20. Level Controls
Make certain the level control feeds water into the boiler
and maintains a proper water level.
21. Odor
It is normal for a new boiler to give an odor when it first
fires. This odor will generally go away within two days.
