Check Gas Piping; Verify Flame Pattern And Combustion - TriangleTube PRESTIGE Excellence 110 Installation & Maintenance Manual

CHAPTER 11 - START-UP PROCEDURES

11.3.4 Check Gas Piping

Check around the unit for gas odor following the proce-
dure outlined in this manual on page 54.
DANGER
If any gas leaks are found or suspected, shut
the unit down immediately. Use a gas de-
tection device or bubble test to locate the
source of the gas leak and repair at once. Do
not operate the unit until the leak is correct-
ed. Failure to comply with this procedure will
result in substantial property damage, seri-
ous injury, or death.

11.3.5 Verify Flame Pattern and Combustion

1. Check the flame pattern through the observation
port of the heat exchanger. The flame should be
blue and stable. The flame should be over the
length of the burner head.
NOTICE
Combustion testing and adjustments must be
performed by a qualified installer, service agen-
cy or the gas supplier. All combustion mea-
surements must be performed with recently
calibrated equipment (1 year max.) to ensure
proper reading and accuracy.
2. Test for CO 2 or O 2 and for CO during high firing
rate. The combustion readings must be within the
range listed in Table 4 on page 57. The CO level
must not exceed 100 ppm for natural gas and
150 ppm for propane gas when combustion is
correct. Perform the following procedure to manu-
ally place the burner into high fire.
a. Press the round INSTALLER button. Reference
Section 9.1 on page 37.
b. Enter the installer access code "054" by using
the LEFT and RIGHT buttons to select a digit
and the UP and DOWN buttons to change the
digit. Press the OK button to enter the access
code.
c. Press the RIGHT button to highlight the Manual
Operation icon
d. Press the OK button while the FAN icon is high-
lighted to manually fire the burner and power
the CH circulator(s).
56
then press the OK button.
Manual Operation
Released
FAN
CH1
DHW
CH2
NOTICE
An adequate CH load must be present to dissi-
pate the heat generated during the combustion
test. If an adequate CH load is not available, an
indirect water heater can be used to dissipate
the heat by creating a DHW call which will en-
able the DHW circulator.
e. Press the RIGHT button to adjust the firing rate
from 1% to 100%. Hold down the RIGHT but-
ton to rapidly increase the firing rate.
Press the OK button while the FAN icon is high-
f.
lighted to shutdown the burner.
3. If the combustion levels during high fire (100%) are
outside the acceptable levels, adjust the THROTTLE
SCREW (see Fig. 14 on page 28) according to Ta-
ble 3 on page 57.
4. Once the combustion level is set at high fire (100%),
manually place the boiler into low fire (1%) mode
by pressing the LEFT button to adjust firing rate
down.
5. Verify the combustion levels during low fire (1%) are
within the acceptable combustion levels in Table 4
on page 57.
WARNING
If the combustion levels at low fire (1%)
are not within the range given in Table 4 on
page 57, shut the boiler down and contact
ACV-Triangle Tube Technical Support. Failure
to comply with this requirement can result in
substantial property damage, serious injury,
or death.
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