AERCO KC1000 Boiler July 2011 - Manual (Page 12)

INSTALLATION
2-2
2.3 INSTALLATION
The unit must be installed with the prescribed
clearances for service as shown in Figure 2.1.
The minimum clearance dimensions, required by
AERCO, are listed below. Local building codes
may require more clearance and take
precedence
Minimum clearances required:
Sides
24"
Front 18"
Rear 18"
Top 18"
All gas piping, water piping, and electrical
conduit or cable must be arranged so that they
do not interfere with the removal of any cover, or
inhibit service or maintenance of the unit.
WARNING!
KEEP UNIT AREA CLEAR AND FREE
FROM COMBUSTIBLE MATERIALS AND
FLAMMABLE VAPORS AND LIQUIDS .
2.3.1. SETTING THE UNIT
Remove the unit from the wooden skid and
place in position using a block and tackle or
hoist attached to the lifting lugs, (see Figure
2.2). USE ONLY THE LIFTING LUGS TO
MOVE THE UNIT.
The KC-1000 is U/L approved for installation on
combustible flooring. A 4” to 6" high house-
keeping concrete pad is recommended and
allows for sufficient drainage of the condensate.
It is suggested that units be secured using the
holes provided in the frame base. Piping must
not be used to secure the unit in place. See
drawing AP-A-568 in Appendix F for the base
frame dimensions.
In multiple unit installations, it is important to
plan the position of each unit. Sufficient space
for piping connections and future maintenance
requirements must be given. All piping must
include ample provision for expansion .
If installing a Combination Control (CCP)
system, it is important to identify and place the
Combination Mode units in the proper physical
location.
LIFTING LUGS
Figure 2.2
Lifting Lug Location
2.3.2 SUPPLY AND RETURN PIPING
The locations of the 4" flanged system supply,
and return piping connections, to the unit are
shown in Figure 2.3. The return connection is
located on the left side near the base of the
unit’s shell. The supply connection is located on
the left side near the top of the unit’s shell.
Whether installing single or multiple units, install
the piping and accessories as shown in the
appropriate piping diagram located in the
Appendix G. For applications other than stan-
dard space heating, consult the AERCO Boiler
Application Guide, GF-1070, or AERCO for the
appropriate piping schematics.
The minimum flow rate through the unit is 25
GPM and the maximum flow rate is 150 GPM.
Each unit is fitted with 4" flanges for high flow
application and the system velocity at the unit
return should not exceed 5 feet per second.
Each unit must have individual valves on the
supply, and return, for maintenance. In multiple
unit installations, the flow through each unit must
be balanced.
MASSACHUSETTS INSTALLATIONS
For boiler installations within the
Commonwealth of Massachusetts, the
boiler must be installed by a plumber or
gas fitter who is licensed within the
Commonwealth. In addition, the boiler
installation must comply with all
requirements specified in Section 1
(Safety Precautions), pages 1-2 and 1-3.