1
CHAPTER 1
CHAPTER 1 - PRE-INSTALLATION REQUIREMENTS
1.1. EXALT Boilers - Code Compliance
The EXALT units must be installed by a qualied installer
in accordance with the following:
• All applicable local, state, national and provincial
codes, ordinances, regulations and laws.
• For installations in Massachusetts, code requires
the EXALT to be installed by a licensed plumber
or gas tter, and if antifreeze is utilized, the
installation of a reduced pressure back-ow
preventer device is required in the boiler’s cold
water ll or make up water supply line.
• For installation in Massachusetts, all direct vented
appliances must comply with the guidelines as
outlined in Section 2.8 on page 10.
• The National Fuel Gas Code (NFPA54/ ANSI Z 223.1).
• National Electric Code (ANSI/NFPA 70).
• For installations in Canada - Installation Code
for Gas Burning Equipment (CAN/CSA B149.1),
Canadian Electrical Code Part 1 (CSA C22.1).
• Standards for Controls and Safety Devices for
Automatically Fired Boilers (ANSI/ASME CSD-1),
when required.
The EXALT gas manifold and gas controls
meet the safe lighting and other performance
requirements as specified in ANSI Z21.13.
Where recommendations in this manual dier from
local or national codes, the local or national codes take
precedence.
1.1.1 Code Restrictions
The single wall heat exchanger in the EXALT Combi
water heater complies with National Standard Plumbing
Code, provided that:
• Boiler water (including additives) is practically non-
toxic, having toxicity rating or class of 1, as listed in
Clinical Toxicology of Commercial Products, and
• Boiler water pressure is limited to maximum 30
psig by approved relief valve.
Single wall heat exchangers are permitted under the
Uniform Plumbing Code - Paragraph L3.2. and L3.3 if
they satisfy all of the following requirements.
• The heat transfer medium is potable water or
contains only substances which are recognized
as safe by the U.S. Food and Drug Administration.
• The pressure of the heat transfer medium is
maintained less than the normal minimum
operating pressure of the potable water system.
NOTICE
• The equipment is permanently labeled to
indicate that only additives recognized as safe
by the FDA shall be used in the heat transfer
medium.
Other heat exchanger designs may be permitted where
approved by the Administrative Authority.
1.1.2 Operating Restrictions
• Maximum EXALT Combi DHW outlet
temperature is 149ºF, when mixing valve is
installed.
• Maximum boiler water temperature rating is 210ºF.
• Maximum DWH working pressure is 150 psig.
• Maximum boiler (CH) working pressure is
50 psig.
• Water quality limitations (based on E.P.A National
Secondary Drinking Water Regulations):
Ū Chloride, less than 150 ppm or mg/l
Ū pH value min. 6, max. 8
Ū Total hardness 3 - 7 grains/gallon or 50-120
ppm or mg/l.
Ū Total Dissolved Solids (TDS), less than 120
ppm or mg/l.
Ū Iron less than 0.3 ppm or mg/l.
Ū Aluminum, less than 0.2 ppm or mg/l.
Ū Copper, less than 1 ppm or mg/l.
Ū Manganese, less than 0.05 ppm or mg/l.
Ū Zinc, less than 5 ppm or mg/l.
BEST PRACTICEBEST PRACTICE
In hard water areas (more than 7 grains of
hardness) soften the cold domestic supply
water to the appliance to prevent scaling.
• Any water conditioning system must be
installed and maintained in accordance
with manufacturer’s specifications.
• Do not install the EXALT Combi in any
application if the boiler piping contains
non-oxygen barrier tubing or if the boiler
piping is considered an “open system”.
Exposing the internal circulator to oxygen
contamination will lead to premature
failure and denial of the warranty.
NOTICE
To Next Page
Loading...
Need help?
General