AERCO KC Series Equipped with C-More Controller for Massachusetts Only - Manual (Page 16)

INSTALLATION
2-6
2.5 ELECTRICAL SUPPLY
The AERCO Gas Fired Equipment Electrical
Power Wiring Guide, (GF-1060), must be
consulted in addition to the following material
before wiring to the unit is started. AC power
connection to the unit are made at the Power
Box.This box is located on the front right side of
the unit as shown in Figure 2.7.
POWER BOX
BLOWER
SSOV
ACTUATOR
FRAME
Figure 2.7
AC Power Box Location
NOTE:
All electrical conduit and hardware should
be installed so that it does not interfere with
the removal of any cover, inhibit service or
maintenance, or prevent access between
the unit and walls or another unit.
2.5.1 ELECTRICAL REQUIREMENTS
Electrical requirements for each unit are 120
VAC, 1 Phase, 60 Hz, 20 Amps from a dedicated
electrical circuit. No other devices should be on
the same electrical circuit as a KC1000 unit.
A means for disconnecting AC power from the
unit (such as a service switch) must be installed
near the unit for normal operation and
maintenance. All electrical connections should
be made in accordance with the National
Electrical Code and/or with any applicable local
codes.
The electrical wiring diagram is shown in Figure
2.8. Conduit should be run from the knockouts in
the side of the box in such a manner that it does
not interfere with the removal of any sheet metal
covers. A flexible electrical connection may be
utilized to allow the covers to be easily removed.
USE COPPER CONDUCTORS ONLY FOR FIELD WIRING
60 HZ
DISCONNECT POWER BEFORE SERVICING
DANGER: HIGH VOLTAGE
20 AMP
120 VAC,
NEUTRAL
GROUND
LINE
POWER BOX
AERCO INTERNATIONAL INC.
INPUT POWER
Figure 2.8
AC Power Wiring Diagram
2.6 FIELD CONTROL WIRING
Each unit is fully wired from the factory with an
internal operating control system. No field control
wiring is required for normal operation. However,
the KC1000 control system does allow for some
control and monitoring features. Wiring for these
features can be accomplished in the I/O Box
behind the left side panel (Figures 2.9 and 2.10).
The I/O Box is common to both KC1000 water
heaters and boilers. While some of the inputs
and outputs are common to both water heaters
and boilers, some are not applicable to both.
These are noted in the following paragraphs.
CAUTION!
DO NOT make any connections to the I/O
Box terminals labeled “NOT USED”.
Attempting to do so may cause equipment
damage.