Real Metro Vancouver mechanical work
When boiler controls are not limiting heat, the next step is safety—not a reset.
A reported water condition led to a mechanical-room assessment that found relief discharge, incorrect or failed high-limit control behaviour, and a need to verify shutdown response before returning the system to service.
Request service- Starting condition
- Overheating and relief discharge
- Evidence found
- High-limit and control faults
- Closeout
- Verified operating response

The decision point
A boiler that keeps firing needs a controlled diagnosis.
The work began by stabilizing the condition and checking what the equipment was actually doing—not by treating a relief valve as the cause on its own. Control settings, high limits, sensor wells, power, and shutdown response all formed part of the diagnosis.
Replacement controls and related components were installed only after the condition was narrowed. The final step was to confirm that the equipment could fire and stop as intended, with the remaining follow-up clearly recorded.
A safer mechanical response
Stabilize, isolate, test, verify.
- 01
Control immediate risk
Treat abnormal temperature and relief discharge as an active equipment condition and stabilize the system before changing components.
- 02
Test the limit path
Check settings, sensor response, control operation, wiring, and the equipment response when the limit circuit opens.
- 03
Repair the confirmed faults
Replace failed or unsuitable control components and address related conditions that prevent accurate operation.
- 04
Verify the return to service
Confirm firing, shutoff behaviour, leaks, and the outstanding maintenance or replacement priorities.
Useful result
A building record that explains what changed and what was verified.
The useful handoff is more than a working boiler. It identifies the observed condition, the corrective work, the verification performed, and the next priority for the people responsible for the building.
- Active overheating condition assessed
- Control and limit behaviour tested
- Corrective work tied to the confirmed condition
- Return-to-service verification documented
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