HVACopediaGlow Brand · Boiler · Other
Anti-legionella cycle
What happens, in order
- Applies to DHW mode 1 (indirect tank with sensor) with parameter 2.206 enabled
- Control checks that the unit reached the control temperature at least once every 7 days
- If not, it fires and starts the pump to push the tank over the control temperature
- Display shows ALEg with the DHW sensor temperature and the faucet icon blinks
- Boiler does not answer normal CH or DHW demands while the special operation runs
Timings and thresholds
| Item | Value |
|---|---|
| Check interval | 168 h (7 days) |
Applies to: B85, B120, B160
Models
B85B120B160
More Glow Brand boiler sequences
- Power-up and de-air · Startup
- Ignition and retry · Ignition
- Central heat call and post purge · Heating
- Indirect tank call and priority · Domestic hot water
- Anti-frost pre-heat · Freeze protection
Take it to the job
Sequences of operation, error codes and tips work offline in the HVACopedia app.
Source: Glow Brand B85/B120/B160 Installation and Operating Manual (sections 10.2, 11.7, 11.8, 11.10, 12.1). Written in our own words; timings can differ by model and software version, so check the manual for your exact unit.
For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.