8
PART 1. GENERAL INFORMATION
(FIGURE 1-2) EVO CLEARANCES
(NOTE:
THE EVO IS RATED AT ZERO
CLEARANCE TO COMBUSTIBLES.)
3/4"=1'
Reference dimensions are ± 10%
All dimensions are ± 1"
Custom
Dwg No.
Customer / Job name:
Scale:
Description:
Drawn/
Revised by:
Checked/
Apv. by:
Revision:
MM/DD/YY
Date:
D. PRE INSTALLATION REQUIREMENTS
C. DIMENSIONS (continued)
The EVO models 299–599 are
designed to be installed using a
factory designed and supplied rack
or frame (see Figure 1-3 for details).
Consult factory for details of wall
mount bracket. It can be installed
in alcoves, basements, and utility
rooms, as well as standard equipment
rooms. Choose a location for your
EVO, centralized to the piping system,
along with consideration for Electrical
(Part 2, Gas Connection (Part 3),
Venting (Part 4), and Condensate
Drain (Part 4, Section F).
The EVO heat exchanger must be
level as installed, and the mounting
surface must be designed to support
the weight (see previous page,
Table 1-2 for weights). Be sure the
appliance is adequately secured to
the mounting surface.
The front cover is secured by a
threaded screw and two clasp style
latches; it can only be installed one
way.
When removing the front
cover of the EVO unit, you must
make sure all electric power to
the appliance is turned off
. Then
remove the screw at the bottom
of the panel, undo the latches and
remove the cover (see Figure 1-4 on
the next page).
If the EVO is set up for liquefied
petroleum (LP) gas, some geographic
areas follow the Uniform Mechanical
Code, section 304.6, “Liquefied
petroleum gas burning appliances
shall not be installed in a pit,
basement or similar location where
heavier-than-air gas might collect.
Appliances so fueled shall not be
installed in a below grade under-
floor space or basement
unless
such location is provided with an
approved means for removal of
unburned gas
.”
Note:
A water chemistry analysis
should be performed prior to any
installation. If the water quality
exceeds any of the following levels,
then a water chemistry analysis must
be performed:
• Water hardness can be no more
than 12 grains (205 ppm or mg/l)
• TDS (total dissolved solids) can
be no more than 450 ppm or
mg/l
• PH—below 6.5 or above 7.5
For total combined hardness
over 15 grains (250 ppm or mg/l)
or longer pipe lengths, contact
Hamilton Engineering for correct
pump sizing. Combined, the
hardness and TDS can be no more
than 450 ppm. Our internal term
for this is the TCH (Total Combined
Hardness).
3/4"=1'
Reference dimensions are ± 10%
All dimensions are ± 1"
Custom
Dwg No.
Customer / Job name:
Scale:
Description:
Drawn/
Revised by:
Checked/
Apv. by:
Revision:
MM/DD/YY
Date:
Zero Clearance
from back of unit
to wall
18"
Clearance
from
bottom
of
unit
24"
Clearance
from
front
of
unit
12" Clearance
from top of unit
3"
Clearance
from
side
of
unit
RECOMMENDED SERVICE CLEARANCES
(FIGURE 1-3 )
EVO MOUNTING DETAIL
