General guidance only. Check the standard itself and take advice from your own competent person for the job in front of you. Last reviewed 2 November 2026.
What an O&M manual is
O&M stands for operation and maintenance. For a fire alarm it is the set of documents you hand over with the system, so the responsible person and whoever services it later know what is installed, how it works and how it should be maintained. Many contracts ask for a formal O&M manual. BS 5839-1 sets out the documents that should be provided at handover, and those form the core of it. Check your contract or specification for anything extra.
What to include
| Item | What it is for |
|---|---|
| Design, installation and commissioning certificates | Record that the system was designed, installed and commissioned to the standard, with the category and any variations stated. |
| Acceptance and handover certificate | Signed by the client or their representative when the system is handed over. |
| Zone plan | The geographic plan fitted next to the panel and each repeater. A copy goes in the manual. |
| As-fitted drawings | The final installation, including cable details. They should be complete and up to date. |
| Cause and effect | What each device or input triggers, as agreed in the design. |
| Cable and insulation resistance test records | Evidence of the tests carried out during installation. |
| Specification and agreed variations | The designer's specification and a written list of variations from the standard. |
| Product manuals and user instructions | For the panel, devices and power supply, so the client can operate the system. |
| System log book | Issued to the responsible person with the operating instructions. |
Many contracts also ask for the standby battery calculation, a maintenance schedule, contact and call-out details for the maintainer, and the commissioning engineer's programming records. Add what the specification asks for.
How to put one together
- Check the contract first. Find out what the client expects and in what format, on paper or as a PDF.
- Collect the records as you go. Certificates, test results, drawings and manuals are easier to gather during the job than at the end.
- Check the as-fitted drawings and zone plan. They must match what is on site, not what was on the design.
- Index it. A contents page, section tabs or bookmarks in a PDF, and a revision and issue date on the front.
- Issue it with the log book. Hand over the log book and operating instructions to the responsible person, and record who received them and when.
- Keep a copy. You will need it if there is a query, or when the system is extended.
- Update it after changes. Reissue the affected drawings, plans and certificates when the system is altered.
A contents list you can copy
- Cover sheet: site, address, system description, category, date of handover and the contractor's details.
- Handover certificates: design, installation and commissioning, with any variations and the declaration of who signed.
- Drawings: zone plan, as-fitted floor plans, cause-and-effect matrix, cable schedule and schematic.
- Equipment schedule: panel, devices, power supplies and batteries, with model, quantity and location.
- Operating instructions: how to silence, reset, isolate and test, and what to do on a fault, in plain English.
- Manufacturer data: manuals and data sheets for the main components.
- Maintenance schedule: servicing frequency and the tests to carry out at each visit.
- Log book: the record of weekly tests, false alarms, faults, servicing and changes.
- Contacts: who to call for service, out-of-hours support and monitoring, and the named responsible person.
Who gets a copy
The client keeps the master copy, in a place the staff can find it. The servicing company needs a copy before its first visit, and a short summary of the system is useful beside the panel. A digital copy means everyone has the same version and replacements are easy.
Keeping it current
An O&M manual is only useful if it matches the system on site. Every time the system is altered, update the equipment schedule and drawings and reissue the affected pages with a revision date. A manual that describes the building as it was at handover is worse than none, because people trust it.
Common mistakes
- Handing over a pile of manufacturer manuals with no site-specific information.
- Leaving out the operating instructions the client's own staff need.
- No contact for out-of-hours faults.
- Different versions of the drawings in different places.
Related guides: how to create a zone plan and how to do an as-fitted drawing.
Common questions
What is a fire alarm O&M manual?
An O&M manual is the set of documents handed over with a fire alarm system so the responsible person and the maintainer know what is installed, how it works and how it should be maintained.
Is an O&M manual a requirement of BS 5839-1?
BS 5839-1 sets out the documents that should be provided at handover, such as certificates, drawings, the log book and user instructions. Whether you also need a formal O&M manual depends on the contract or specification, so check it.
What goes in a fire alarm O&M manual?
The certificates, zone plan, as-fitted drawings, cause and effect, test records, specification and variations, product manuals and user instructions, and the system log book. Many contracts ask for extras such as the battery calculation and a maintenance schedule.
Who should get the O&M manual?
The client or responsible person, who signs for the handover. Keep a copy yourself.
How long should an O&M manual be?
As long as it needs to be to run and maintain the system, and no longer. A small system might be a dozen pages. Site-specific pages matter more than a thick stack of manufacturer literature.
Is an O&M manual a legal requirement?
It is part of good handover practice and the documentation expected under BS 5839-1. Check your contract and the standard for what is required on a given job.
Can the O&M manual be digital?
Yes, as long as the client can open it, it is backed up, and a copy is available at or near the panel when it is needed.
How Compliar helps
Compliar has certificate templates for the design, installation, commissioning, handover and servicing stages of a fire alarm, referenced to BS 5839-1:2025, with branded PDFs sent to the customer when you finish. The digital fire log book and the drawings sit on the same site record.
Less paperwork. More progress.
Book a demo and Keiran will walk through your own jobs. Early adopters lock their price for 3 years, with no contract.