Installation / Operation Instruction Manual

Page 42
BRADFORD WHITE CORP .
again.
5. Turn Brute LX on.
6. After placing the appliance in operation, the
Burner Safety Shuto Device must be tested:
(a) Close gas shuto valve with burner operating.
(b) Flame will go out and blower will continue to run
for the post purge cycle. Three additional attempts
to light will follow including pre-purge, ignitor on,
valve/ame on and post purge. Ignition will not
occur as the gas is o. The ignition control will
lockout.
(c) Open gas shuto valve. Reset the boiler control
by pressing the RESET button on the control or
on the display. Restart the appliance. The ignition
sequence will start again and the burner will start.
The appliance will return to its previous mode of
operation.
CAUTION
Should any odor of gas be detected, or if the gas
burner does not appear to be functioning in a normal
manner, CLOSE MAIN SHUTOFF VALVE. Do not
shuto󰀨switch.Contactyourheatingcontractor,gas
company, or factory representative.
10.2.2 Measure and Adjust CO2 at the Gas
Valves
1. Measure the CO
2
in the ue products at high re.
The Brute LX can be forced to high re to allow
for easier setup. Refer to Section 8 for instructions
on how to access the forced rate menu. The CO
2
readings should be between the range shown in
Table 17. If the CO
2
is not within the range shown,
adjustments may be made. To adjust the high re
CO
2
, locate the high re adjuster screw (Figure
28). Using a 2.5 mm Hex wrench, slowly make
adjustments in 1/16 of a revolution increments
until the CO
2
is within the range identied.
2. Measure the CO
2
in the ue products at low re.
Brute LX can be forced to low re to allow for
easier setup. Refer to Section 8 for instructions on
how to access the forced rate menu. CO
2
readings
should be between the range shown in Table 17. If
the CO
2
is not within the range shown, adjustments
may be made. To adjust the low re CO
2
, locate
the low re adjuster screw. Using a 4 mm Hex
wrench, slowly make adjustments in 1/16 of a
revolution increments until the CO
2
is within
the range identied. (see Figure 28)
3. Repeat steps 1 and 2 to conrm that the CO
2
ranges
are within the required ranges. High and Low
Fire CO2 settings should be approximately equal.
Adjust if necessary.
If any CO2 readings cannot be adjusted to the
specied ranges (see Table 17), please consult the
factory for further information.
WARNING
Improper adjustment may lead to poor combustion
quality, increasing the amount of carbon monoxide
produced. Excessive carbon monoxide levels may
lead to personal injury or death.
10.3 Shutting Down Brute LX
1. Turn o the main electrical disconnect switch.
2. Close all manual gas valves.
3. If freezing is anticipated, drain Brute LX and be
sure to also protect building piping from freezing.
All water must be removed from heat exchanger
and condensate trap or else damage from freezing
may occur.
This step to be performed by a qualied service person.
10.4 To Restart Brute LX
If drained, go back to Section 10! in this manual for
proper lling and purging, prior to continuing.
1. Turn ON the main electrical disconnect switch.
2. Open all manual gas valves.
3. WAIT FIVE (5) MINUTES.
4. Set the temperature controller to the desired
temperature setting and switch on electrical power.
5. Burner will go through a prepurge period and
ignitor warm-up period, followed by ignition.