Category Archives: Condensing Modulating Gas Boiler

Triangle Tube C105 Install

Boiler Issues

We woke up after a below zero night to the carbon monoxide alarms in the morning. Even though it was below zero I turned off the boiler function and opened the back door to let in fresh air. The alarms … Continue reading

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What Was Wrong with the Boiler Pump?

We came home from vacation to no heat. The boiler was firing but the Grundflos secondary pump was not running to distribute it through the radiant pipes. The first thing I did was turn off the heat function of the … Continue reading

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Boiler Carbon Monoxide Alarm!

We were jarred awake by our carbon monoxide alarms when the temperature was eighteen below zero. We immediately opened a living room and back hall door and let fresh air flow. We tried leaving the boiler on but when the … Continue reading

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A Boiler/Fireplace Boiler/Hot Water Question

Another good question, this one from our volunteer guide, was about the specifics of our radiant hot water and domestic hot water piping. Could I provide a diagram about how it all worked together? I had never put both systems … Continue reading

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Colorado Average Home Gas Use vs. Ours

We are getting ready for the Metro Denver Green Homes Tour on October 1st. Our home was on the tour in 2017. Since then we have finished the LEED certification as a Platinum Green and Net Zero home. So we … Continue reading

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We Get Green Building Visitors and Boiler Set Points

Believe it or not someone read this entire blog. I am amazed because it obviously takes a certain kind of interest to slog through over 630 posts with 9 years of projects. I received a letter from this gentleman and … Continue reading

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Filters and Boiler Maintenance

Fall is falling and some quick chores were completed. We have a Campbell filter on the whole house water supply. It takes a double charcoal filter and it relatively easy to change as long as the water turn off is … Continue reading

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Tweaking the Pump Wiring Again

As part of the pump install I changed the wiring again. In the past I had trouble with the primary and secondary pumps working independently. I thought that was one of the things that wore out the Taco 011 pump … Continue reading

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Heat is Back On

I left the heat off until the days stopped being sunny. During that time the house temperature didn’t go below 64 degrees. Even when it got down to 20 degrees outside at night. We woke up to a steady 64 … Continue reading

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Ach Phooey! Taco Pump Siezed

Since we returned from a trip to see our newest grandson about a week ago, I’d been noticing that the floor was not warm but the radiators in the back were. I thought since I had turned the heat down … Continue reading

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Cleaning the Challenger’s Heat Exchanger

When I was wiring the boiler, I checked the condensate overflow system on the boiler and noticed the plastic drain was full of black gunk. I cleaned it out and about a week later checked it again and it was … Continue reading

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Boiler Wiring Fix

This summer I re-built the zone valves for the boiler. And I planned new logic for the wiring so that I could include the fireplace boiler and hopefully a chiller. I had the new single pump relay using the output … Continue reading

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Current Wiring for the Boiler

Way back last spring when I was finishing up the boiler wiring, I had problems with the secondary pump such that I replaced the used pump I bought on ebay with a brand new Taco 011. That was expensive but … Continue reading

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Pump Problems

Taco seems to be a well-respected name in water pumps. The 00 series is especially popular. These range from an 003 to an 013. Triangle Tube instructions recommend both the Grundfos and the Taco pumps. For a system the size … Continue reading

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Chronicle of Errors

I mentioned there were several things wrong with the first installation of boiler piping. When tested, water was not getting through the system and I believed the pump was just not strong enough to circulate through all the radiant loops. … Continue reading

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Primary/Secondary Piping Complexities

This is the new primary/secondary piping. It follows several boiler piping rules of thumb, although the 009 pump is now a bit over-sized for the primary loop. There is a secondary 011 pump that also is capable of pumping at … Continue reading

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From Simple to Complex

The original boiler piping design was going to be a single loop system. Return water would be pumped through the system to the boiler and hot would flow out to replace it. One Taco 009 pump was chosen for the … Continue reading

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Double Double Toil and Trouble

This old brown pump came with the house (also an 006) but did not pump. I replaced this one with a different Taco 006 that includes a temperature sensor. The new pump worked, however, it broke the flow control switch … Continue reading

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Hot Water at Last!

YES! Endless hot water @ 2.4 gallons per minute. That was enough for a nice long shower, first one in the house in about a year. So nice to finally have the water system connected and hot water running again. … Continue reading

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More Boiler Business

Even though I thought I did all the research necessary to make a good decision, I have spent time doubting the choice I made for the boiler. The radiant system was sized using the Manual J calculations for the existing … Continue reading

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