AERCO KC1000 Low NOx Boiler equipped with C-More 2003 - Manual (Page 10)

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 additional 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 Fig. 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 inch 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-816 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.
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 Appendix
G. For applications other than standard 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.
Every boiler plant must have a source of make-
up water to it. As with any closed loop hydronic
system, air elimination and expansion equip-
ment must be provided as part of the overall
installation. All piping MUST include ample
provision for expansion.