AERCO KC1000 Heater w/Mod-Box Controller - Manual (Page 8)

INSTALLATION PROCEDURES
3
2.3 INSTALLATION
The unit must be installed with the prescribed
clearances for service as shown in Fig 2.1
These are the minimum clearance dimensions
required by AERCO. Local building codes may
require more clearance and take precedence.
WARNING !
KEEP UNIT AREA CLEAR AND FREE
FROM COMBUSTIBLE MATERIALS AND
FLAMMABLE VAPORS AND LIQUIDS.
2.3.1 SETTING THE UNIT
Locate the lifting lugs, shipped with the unit, and
attach them to the 5/8” x 11 studs at the top of
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 THE LIFTING LUGS TO MOVE THE
UNIT.
Figure 2.2
Lifting Lug Location
The KC-1000 is U/L approved for installation on
combustible flooring. A 4” to 6" high
housekeeping concrete pad is recommended
and allows for sufficient drainage of the
condensate.
The unit must be secured using only the holes
provided in the frame base. Do not use piping to
secure the unit in place. See drawing AP-A-576
in Appendix E 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 maintenance
requirements must be given. All piping must
include ample provision for expansion.
2.3.2 WATER INLET AND OUTLET
PIPING
The locations of the 2" NPT cold water inlet and
hot water outlet piping connections are shown in
Figure 2.4. Flow rates through the unit are
limited to 30 gpm continuous and 40 gpm
intermittent.
Shut-off valves and union conections must be
installed in the inlet and outlet lines for
maintenance. The use of dielectric unions is
recommended. Install the piping and
accessories as per the following drawings,
located in Appendix F of this manual.
•
SD-B-424 for single units
•
SD-B-425 for multiple units
•
SD-B-432 for single units with a stratified
tank
•
SD-B-434 for multiple units with a stratified
storage tank
NOTE:
All piping must be arranged so that it does
not interfere with removal of any cover,
inhibit service or maintenance, or prevent
access between the unit and walls, or
another unit.
Figure 2.3
Inlet and Outlet Location
2.3.3 TEST HOSE BIB
A Test Hose Bib connection, upstream of the
shut off valve on the hot water outlet, is required