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GUIDE SPECIFICATIONS
This specification specifies [Lennox Industries LF24] gas−fired unit heaters. Revise specification section
number and title below to suit project requirements, specification practices and section content. Refer to CSI
MasterFormat for other section numbers and titles.
This specification utilizes the Construction Specifications Institute (CSI) Manual of Practice, including
MasterFormatt, SectionFormatt and PageFormatt. Optional text and text requiring a decision is indicated
by bold brackets[ ] and proprietary information is indicated by bold italic brackets[ ]; delete text not required
in final copy of specification. Specifier Notes typically precede specification text; delete notes in final copy of
specification. Trade/brand names with appropriate symbols typically are used in Specifier Notes; symbols are
not used in specification text. Metric conversion, where used, is soft metric conversion.
SECTION 23 55 33
PART 1 GENERAL
1.1
SUMMARY
A.
Section Includes: Gas−Fired unit heaters
Specifier Note: Revise paragraph below to suit project requirements. Add section numbers and titles per CSI
MasterFormat and specifier's practice.
B. Related Sections:
Specifier Note: Article below may be omitted when specifying manufacturer's proprietary products and recommended
installation. Retain Reference Article when specifying products and installation by an industry reference standard. If
retained, list standard(s) referenced in this section. Indicate issuing authority name, acronym, standard designation and
title. Establish policy for indicating edition date of standard referenced. Conditions of the Contract or Division 1
References Section may establish the edition date of standards. This article does not require compliance with standard,
but is merely a listing of references used. Article below should list only those industry standards referenced in this
section. Retain only those reference standards to be used within the text of this Section. Add and delete as required for
specific project.
1.02 REFERENCES
A.
Certifications:
1.
CSA International
2.
For use with natural or LPG/propane gas
3.
California Energy Commission (CEC)
B.
ISO 9001, units manufactured to quality standard
Specifier Note: Article below should be restricted to statements describing design or performance requirements and
functional (not dimensional) tolerances of a complete system. Limit descriptions to composite and operational properties
required to link components of a system together and to interface with other systems.
1.03 SYSTEM DESCRIPTION
A.
Electrical Requirements:
1.
60 Hz.
2.
115 V
3.
Single phase
4.
115V/24V or 120V/24V transformer
B.
Fuel Requirements: [Natural gas] [and][/][or] [LPG/propane]
Specifier Note: Article below includes submittal of relevant data to be furnished by Contractor before, during or after
construction. Coordinate this article with Architect's and Contractor's duties and responsibilities in Conditions of the
Contract and Division 1 Submittal Procedures Section.
1.04 SUBMITTALS
A.
General: Submit listed submittals in accordance with Conditions of the Contract and Division 1 Submittal Procedures.
B.
Product Data: Submit product data for specified products.
C.
Shop Drawings:
1.
Submit shop drawings in accordance with Section [01330 − Submittal Procedures].
2.
Indicate:
a. Equipment, piping and connections, together with valves, strainers, control assemblies, thermostatic
b. Piping, valves and fittings shipped loose showing final location in assembly.
c. Control equipment shipped loose, showing final location in assembly.
d. Field wiring diagrams.
e. Dimensions, internal and external construction details, installation clearances, recommended method of
f. Detailed composite wiring diagrams for control systems showing factory installed wiring and equipment
T−Class Packaged Gas / Electric 7.5 to 12.5 tons / Page 8
FUEL−FIRED UNIT HEATERS
controls, auxiliaries and hardware and recommended ancillaries which are mounted, wired and piped
ready for final connection to building system, its size and recommended bypass connections.
installation, sizes and location of mounting bolt holes.
on packaged equipment or required for controlling devices or ancillaries, accessories, controllers.
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