HVACopediaRinnai · Air handler · Heating
Heating call, single-stage thermostat
What happens, in order
- Thermostat calls for heat and closes R to W2
- Hot water circulating pump is energized
- After a short delay the blower starts (R to G circuit)
- Hot water from the tankless unit or boiler is moved through the coil and blown into the ducts
- Thermostat is satisfied and the call for heat ends
- Blower keeps running for its off delay, then stops
Timings and thresholds
| Item | Value |
|---|---|
| Blower on delay (default) | 5 s |
| Blower off delay (default) | 120 s |
Applies to: Rinnai Canadian hydronic air handler (heat pump and A/C versions)
Models
More Rinnai air handler sequences
- Heating call, two-stage thermostat · Heating
- Cooling call, single-stage thermostat · Cooling
- Cooling call, two-stage thermostat · Cooling
- Circulating pump exercise · Pump/purge
- Continuous fan · Other
Related
Rinnai error codes · Rinnai tips · Rinnai parts · All Rinnai sequences
Take it to the job
Sequences of operation, error codes and tips work offline in the HVACopedia app.
Source: Rinnai Canadian Hydronic Air Handler Installation and Operation Manual (600000023), thermostat operation section. 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.