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CHAPTER 1
CHAPTER 1 - PRE-INSTALLATION REQUIREMENTS
1.1. INSTINCT boilers - Code Compliance
The INSTINCT units must be installed by a qualied in-
staller in accordance with the following:
• All applicable local, state, national and provin-
cial codes, ordinances, regulations and laws.
• For installations in Massachusetts, code re-
quires the INSTINCT 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), Ca-
nadian Electrical Code Part 1 (CSA C22.1).
• Standards for Controls and Safety Devices for
Automatically Fired Boilers (ANSI/ASME CSD-1),
when required.
The Instinct 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 lo-
cal or national codes, the local or national codes take
precedence.
1.1.1 Code Restrictions
The single wall heat exchanger in the INSTINCT Combi
water heater complies with National Standard Plumb-
ing 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 op-
erating pressure of the potable water system
NOTICE
• The equipment is permanently labeled to indi-
cate that only additives recognized as safe by
the FDA shall be used in the heat transfer me-
dium.
Other heat exchanger designs may be permitted where
approved by the Administrative Authority.
1.1.2 Operating Restrictions
• Maximum INSTINCT Combi DHW outlet tem-
perature 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 Nation-
al 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 PRACTICE
In hard water areas (more than 7 grains of
hardness) soften the cold domestic supply wa-
ter to the appliance to prevent scaling.
• Any water conditioning system must be in-
stalled and maintained in accordance with
manufacturer’s specifications.
• Do not install the INSTINCT Combi in any
application if the boiler piping contains
non-oxygen barrier tubing or if the boiler
piping is considered an “open system”. Ex-
posing the internal circulator to oxygen
contamination will lead to premature fail-
ure and denial of the warranty.
NOTICE
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