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SECTION 1.
General Information
WARNING
Keystone units must be installed in accordance with
the procedures detailed in this manual, or the
Triangle Tube warranty will be voided. The
installation must conform to the requirements of the
local jurisdiction having authority, and, in the United
States, to the latest edition of the National Fuel Gas
Code, ANSI Z223.1/NFPA54. In Canada, the
installation must conform to the latest edition of CSA
B149.1 Natural Gas and Propane Gas Installation
Code, and/or local codes. Where required by the
authority having jurisdiction, the installation of
Keystone boilers must conform to the Standard for
Controls and Safety Devices for Automatically Fired
Boilers, ANSI/ASME CSD-1. Any modifications to the
boiler, its gas controls, or wiring may void the
warranty. If field conditions require modifications,
consult the factory representative before initiating
such modifications.
1.1 Introduction
This manual provides information necessary for
the installation, operation, and maintenance of Triangle
Tube Keystone appliances. Read it carefully before
installation.
All application and installation procedures should
be reviewed completely before proceeding with the
installation. Consult the Triangle Tube factory, or local
factory representative, with any problems or questions
regarding this equipment. Experience has shown that
most operating problems are caused by improper
installation.
Keystone is protected against over pressurization.
A pressure relief valve is included with each Keystone.
Some Keystones may require that the PRV be installed
prior to filling the system. Refer to Figures 1-6 for PRV
locations.
IMPORTANT: The inlet gas pressure to the appliance
must not exceed 13" W.C. (3.2kPa).
All installations must be made in accordance with
1) American National Standard Z223.1/NFPA54-Latest
Edition “National Fuel Gas Code” or 2) CSA B149.1
“Natural Gas and Propane Installation Code” and with
the requirement of the local utility or other authorities
having jurisdiction. Such applicable requirements take
precedence over the general instructions contained herein.
All electrical wiring is to be done in accordance
with the local codes, or in the absence of local codes,
with: 1) The National Electrical Code ANSI/NFPA No.
70-latest Edition, or 2) CSA STD. C22.1 “Canadian
Electrical Code - Part 1”. This appliance must be
electrically grounded in accordance with these codes.
1.2 Model Identification
Consult the rating plate on the unit. The following
information describes the model number structure.
(1) Model Series Designation
K = Keystone
(2) Usage
S = Hydronic
W = Volume Water
(3-5) Size
1 9 9 = 199,000 BTU/hr input
2 8 5 = 285,000 BTU/hr input
3 9 9 = 399,000 BTU/hr input
5 0 0 = 500,000 BTU/hr input
6 0 0 = 600,000 BTU/hr input
7 5 0 = 750,000 BTU/hr input
8 5 0 = 850,000 BTU/hr input
(6-7) Fuel
Blank = Natural Gas
1.3 Appliance Overview
See Figures 1 through 6.
Model Nomenclature
1 2 3 4 5 6 7
K
SERIES
K
USAGE
S - HYDRONIC
W -VOLUME
WATER
SIZE
MBTU/h
1 9 9
2 8 5
3 9 9
5 0 0
6 0 0
7 5 0
8 5 0
FUEL
Blank - NATURAL
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