AERCO KC1000 Boiler July 2011 - Manual (Page 34)

INITIAL START-UP
4-2
SSOV
1/8" NPT PLUG
(INSTALL
MANOMETER
HERE)
Figure 4.1
1/8” Gas Plug Location
4.2.3 PREPARING THE FLUE VENT
PROBE HOLE
1. If the unit has been installed using the
recommended AL29-4C vent, there will be a
3/8” hole, 18” to 24” above the exhaust
manifold. The outer vent section, that covers
vent section connections must be loosened
and moved to uncover the hole (see
Fig. 4.2).
2. If equipped with one, adjust the stop on the
combustion analyzer probe so that it
extends into the flue gas flow without hitting
the opposite wall of the flue. Do not insert
the probe at this time.
3/8" - 1/2"
HOLE FOR
COMBUSTION
ANALYZER
PROBE
EXHAUST
MANIFOLD
12" - 18"
Figure 4.2
Analyzer Probe Hole Location
IMPORTANT
The unit is shipped from the factory set up for
either natural gas or propane, as specified by
the Style No. on the Sales Order.
For propane units, refer to paragraph 4.4 for
some additional setup procedures unique to
propane units. The oxygen and carbon
monoxide levels in Tables 1, 2 and 3 apply to
both natural gas and propane. However, it
should be noted that in Table 2 the oxygen and
carbon monoxide levels are measured at 13%
for natural gas and 16% for propane.
4.3 NATURAL GAS COMBUSTION
CALIBRATION
The KC-1000 is shipped combustion calibrated
from the factory. Recalibration as part of a start-
up is necessary due to altitude, gas BTU
content, gas supply piping and supply
regulators. Factory test data sheets are shipped
with each unit as a reference.
The following combustion calibration procedure
closely follows the factory procedure. By
following this procedure, readjustment of the
combustion settings will be kept to a minimum.
1. Open the water supply and return valves to
the unit and ensure that the system pumps
are running.
2. Open the gas supply valve(s) to the unit.
3. If a lockup style regulator is installed as a
gas supply regulator, adjust the gas supply
until a reading of 12” W.C. static pressure is
obtained.
4. Set the ON/OFF switch to the OFF position.
Turn on AC power to the unit. The display
will show LOSS OF POWER and the time
and date.
5. Set the unit to the Manual Mode by pressing
the AUTO/MAN switch. A flashing Manual
Valve Position message will be displayed
with the present Air/Fuel Valve position in %
open. Also, the MANUAL LED will light.
NOTE:
For a review of control panel operating
procedures, refer to Section 3.
6. Adjust the Valve Position to 0% by pressing
the ▼ arrow key.
7. Set the ON/OFF switch to the ON position.
8. Change the Valve Position to 25% using the
▲ arrow key. This will put the unit into the
starting sequence.