34000 Autry Street, Livonia, MI 48150 | 800.968.5530 | Fax 734.419.0209 | www.hamiltonengineering.com | LIT91127US REV 5/2018
Page 10
GENERAL INFORMATION
D. PRE INSTALLATION REQUIREMENTS
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). Models 79–199.1 may also
be installed using an optional wall bracket. If the wall bracket is used,
care must
be exercised to insure that the wall structure is sufficient to support the
weight of the connected load
(see weights in Table 1-2, pg.9). 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
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:
(FIGURE 1-3)
EVO MOUNTING DETAIL
(FIGURE 1-2) EVO CLEARANCES
RECOMMENDED SERVICE 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:
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
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).
