Triangle Tube outdoor reset settings

t300

I have a Triangle Tube instinct combi 199, in Manitoba. Winter lows -30c, average -15c, and summers get to +25-30c. It was installed without outdoor reset. I bought one, about to hook it up, just wondering on initial settings. I have unit heating at max 150f which seems to work well. Below settings to start seem appropriate?

Parameter	Description	Setting
Parameter	4	Description	CH Max Setpoint	Setting	150°F (Default 186f)
Parameter	10	Description	CH Min Setpoint	Setting	110-120°F (Default 64f)
Parameter	11	Description	Outdoor Temp at Max Setpoint	Setting	-25 to -30°C (-13 to -22°F) (default 0f)
Parameter	12	Description	Outdoor Temp at Min Setpoint	Setting	10-15°C (50-59°F) (default 86f)

LRCCBJ

It is difficult to provide guidance on the setting simply because we don't know the size of the building, the radiation it has, and the the amount of insulation and air sealing that it has.

Your values are fine IF the building can maintain your desired indoor temperature (not stated). Personally, I would guess that 150°F would not make it at -22°F but the data tells the tale.

If the boiler easily maintains indoor temperature at 150°F supply, experiment with 145°F. You'll get to the point where it will not maintain indoor. Now you are very close to your CH max limit. This must be done at -22°F or so. If warmer, it will skew the results.

Regarding CH min, you'll have to wait until summer to determine. I'd suggest that 100°F would be a good starting point for that. You don't need much heat at 55°F.

t300

Thank you for this.

• newer house build, 2000sq foot ICF walled basement, 2000sq foot main floor
• 5 main heat zones. heat exchanger in forced air furnace, basement floor heat, garage floor heat, garage air handler, and DHW which is currently not in use
• system has zero problem keeping up on -35c days, mostly due to the floor heat basement, ton of concrete with ICF construction and its insulated extremely well and pretty air tight (too air tight actually which is a different air quality discussion).

As an example, in winter we typically keep the house (furnace) at 20.5c, and turn to 19c for night. Floor heat setpoint is static. If its -35c outside, furnace will kick on at its scheduled 6am 20.5c time and take a couple hours to get to setpoint which is totally fine by us. I have the boiler itself and each zone monitored and trended to a database so easy to see the impact of any system changes. My base assumption is that its better to run lower temp and longer cycle times than hotter and short cycle.

I'll hook it up this week and report back.