SOURCE-LINKED REGULATION GUIDE
UN R122 — Vehicle heating systems
Examine heating-system safety and its role in vehicle approval.
Explore the scopeWhat does it cover?
UN R122 applies to M-, N- and O-category vehicles fitted with a heating system. It addresses approval of a vehicle type with regard to its heating system and approval of the heating system for operational safety in separate parts. A project must consider both subjects while keeping their scopes distinct.
Who is it for?
Vehicle-heater manufacturers, bus and motorhome body builders, and thermal-system teams.
Which subjects are addressed?
- Heating-system scope
- Vehicle type approval
- Operational safety of the heater
- Vehicle versus component
Common question
Are heater approval and vehicle approval the same?
No. Part I concerns the vehicle type; Part II concerns operational safety of the heating system. Use this distinction to identify the assessments relevant to a project.
Source documents and references
Work with this regulation in RegsUP.
Read the text with its edition and sources. Assess available comparisons, relevant dates and question-and-answer features against your work needs.
Discuss access options