LAARS MagnaTherm MGV - Installation, Operation and Maintenance Instructions - Manual (Page 63)

MagnaTherm Boilers and Water Heaters Page 59
9.11 – Combustion Setup Procedure
In this section, we will explain how to set up the gas
valve so the boiler will run efficiently at both the
High Fire and Low Fire conditions.
Required tools: Screwdrivers, Torx bits, Allen
Wrench Set, Combustion Analyzer
WARNING
Improper adjustment may lead to poor combustion
quality, increasing the amount of carbon monoxide
produced. Excess carbon monoxide levels may
lead to personal injury or death.
1. On the Main Gas Valve, locate the adjustments
for high fire throttle, and low fire offset. See
Fig. 98 and 99.
Refer to Table 17 for appropriate CO2 ranges.
2. Press the Control Icon at the center of the
Home Screen
.
Menu 22. ‘Home’ screen
3. The system will present the Status Summary
screen.
Menu 23. Status Summary Screen
4. Press the ‘Configure’ button in the lower left
corner.
Menu 24.
Configuration Menu
5. From the “Configuration” menu, select the line
“Burner Control Ignition.”
Menu 25. Burner Control Ignition
Once there select “Pilot Test Hold” and turn
this feature “ON.” This feature will allow
the pilot to stay lit for setup and will NEVER
fire the main burner. Give the unit a call for
heat and the boiler will begin its sequence of
operation (Refer to Section 12.8 for sequence
of operation, and Table 14 for required pilot
valve pressures.)
6. Once the pilot has lit, adjust pilot regulator
pressure to that described in Table 14. With
pilot still lit, view the flame through the sight
glass. An adjustment to the pilot regulator
may be needed if a yellow flame is visible.
Use the regulator adjustment to adjust pilot
flame to a nice blue hue while ensuring that
the pressure in the pilot valve (See Table 14).
7. Once the desired pilot has been established,
turn the call for heat OFF and return to
“Burner Control Ignition” in the “Configure”
menu to turn “OFF” the pilot test hold.