Combustion Setup; Combustion Setup Procedure - Bradford White Brute BNTH Installation And Operation Instructions Manual

Page 50
8.10.1 – 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
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.
Refer to Table 1 for appropriate CO2 ranges.
2. Press the Control Icon at the center of the
Home Screen
.
Menu 25. 'Home' screen
3. The system will present the Status Summary
screen.
Menu 26. Status Summary Screen
4. Press the 'Configure' button in the lower left
corner.
WARNING
Menu 27. Configuration Menu
5. Brute is equipped with a zero governing, negative
regulator valve. The valve throttle should
be adjusted only at high fire, and the offset
adjustment is only to be done at low fire. From the
"Home" screen, touch the control icon, then press
the 'Operation' button.
From the 'Operation' Menu, you can select 'Firing
Rate' which will prompt you for a password. Once
installer level password has been entered, press the
'Firing Rate' box again.
6. Press the box for Firing Rate again. The controller
will present the Manual Firing Rate screen shown
in Figure 41
Menu 28. Manual Firing Rate
7. Notice the three options on the left side of the
screen:
Auto -
The firing rate will be set automatically by the
controller, based on the heat load. Set this item to
B W
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