AERCO KC1000 Heater 2002 - Manual (Page 30)

INITIAL START-UP
4-2
SSOV
1/4" NPT PLUG
(INSTALL
MANOMETER
HERE)
Figure 4.1
1/4” 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 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.
3/8" - 1/2"
HOLE FOR
COMBUSTION
ANALYZER
PROBE
EXHAUST
MANIFOLD
12" - 18"
Figure 4.2
Analyzer Probe Hole Location
4.2.4 INSTALLING THE DIFFERENTIAL
REGULATOR ADJUSTMENT TOOL
1. Remove the cap from the differential pres-
sure 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
.
REGULATOR
ADJUSTMENT
TOOL (P/N 122643)
DIFFERENTIAL
PRESSURE
REGULATOR
REGULATOR CAP
CAP GASKET
Figure 4.3
Differential Regulator Adjustment Tool
Installation
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.
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 follow-
ing this procedure readjustment of combustion
will be kept to a minimum.