UL 795:8ED 2016-12-02

Foreword
Introduction
1 Scope
2 Glossary
3 Units of measurement
4 Components
Construction - mechanical
5 General
Construction - electrical
6 General
7 Servicing and adjustment
8 Electrical enclosures
9 Field wiring connections
10 Internal wiring
11 Separation of circuits
12 Mounting of components
13 Motors and motor overcurrent or overload protection
14 Overcurrent protection of high-voltage control-
    circuit conductors
15 Overcurrent protection of transformers
16 Switches and controllers
17 Capacitors
18 Electrical insulating material
19 Spacings - high-voltage circuits
20 Spacings - low-voltage circuits
21 Accessibility of uninsulated live parts
22 Bonding for grounding
Construction - burner assemblies
23 General
24 Controls
25 Combustion air controls
26 Primary safety controls
27 Ignition systems
28 Fittings and piping
29 Valves and regulators
30 Combination gas-oil burner assemblies
Construction - boilers, furnaces and heaters
31 General
32 Accessibility
33 Baffles
34 Burner equipment
35 Operating controls
36 Limit controls
37 Installation of external controls and fittings on
    boilers
38 Flue dampers, draft regulators, and draft hoods
39 Bleeds and vents
40 Bases
41 Heating surfaces and combustion chambers
42 Radiation shields
43 Materials in air handling compartments
44 Casings
45 Fuel lines and components
46 Flue collars
47 Air filters
Performance
48 General
49 Test installations
50 Test methods
51 Burner assembly tests
52 Operation tests
53 Temperature tests
54 Low water cutoff of boilers - test no. 17A
55 Short-circuit - test no. 18
56 Overload test, high-voltage transformers - test no.
    18A
57 Burnout test, high-voltage transformers - test no.
    18B
58 Dielectric voltage-withstand test - test no. 19
59 Draft hood equipped devices
60 Flame test
61 Strain relief test
Outdoor-use equipment
62 General
63 Enclosures
64 Field wiring connections
65 Wiring
66 Outdoor-use equipment tests
67 Gaskets
68 Chromic acid dropping test - no. 26
Manufacturing and production tests
69 General
Marking and instructions
70 Marking
71 Instructions
Appendix
A Standards for components

This revision of UL 795 dated September 29, 2020 includes editorial corrections to an equation in paragraph 56.1.5 and a table reference in paragraph 43.2.

These requirements apply to factory-built gas appliances having inputs of more than 400,000 Btu per hour, per individual combustion chamber which require flame failure and other precautions and which are intended primarily for commercial and industrial installation.