AERCO KC1000 Heater w/Mod-Box Controller - Manual (Page 23)

INITIAL START-UP
18
1/4" NPT PLUG
(INSTALL
MANOMETER
HERE)
SSOV
Figure 4.1
1/8” Gas Plug Location
4.2.2 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 slid down 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.
Figure 4.2
Analyzer Probe Hole Location
Figure 4.3
Differential Regulator Adjustment Tool
Installation
4.2.3 INSTALLING THE DIFFERENTIAL
REGULATOR ADJUSTMENT TOOL
1. Remove the cap from the differential
pressure regulator (see Fig. 4.3).
2. Place the gasket from the regulator cap onto
the regulator adjustment tool.
3. Prior to Installing the tools on the regulator
pull up the tool's screwdriver blade. Then
thread the tool into the regulator.
4. Engage the tool’s screwdriver blade into the
regulator’s adjustment screw slot.
4.3 COMBUSTION CALIBRATION
The KC-1000 ships 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
combustion will be kept to a minimum.
NOTE:
If the instructions in section 4.2 have not yet
been performed, go back and do so before
continuing.
1. Open the 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.