Tjerlund Sideshot Trips out in high wind?

Jack_23

I represent Tjernlund in New England. ALL power ventiers and direct vent equipment are tested to meet a 40mph wind load. It is the standard test criteria. The B1 wiring from the A-stat is a good idea imho.

Mark Wolff

Problems; I need solutions.

I installed a nice system for a guy who lives up on a hill. He gets a fair amount of wind where he is at (he clearcut his entire property!) Anyways, the system worked fine till the first good storm we got. The side shot is running then for some reason turns off wrong? and the primary control trips.

I've checked the wiring and it is right. The only time it trips is during a wind storm, the direction of wind doesn't matter either. Has anyone ever run into something like this? I am getting frustrated and don't even know what to do other than camp out at the customers house in a wind storm.

I thought the fan proving switch might have part of the blame. If a gust of wind blows against the vent opening when it is testing for air flow it could shut down, but the powerventer doesn't register any trouble codes.

Robert O'Connor_4

According

to Tjerlund you can turn off the dip switch that prevents the powerventer from starting if the proving switch is already closed. It may already be closed if there is a stiff wind.

If this is an oil job I reccomend bringing on the powerventer from b1 instead of the primary control. This way the burner won't lock out if there is a powerventer problem, It just won't get powered.

Tjerlund shows this wiring as an alternate and it makes troubleshooting very easy. Thats why I like it!

Mark Wolff

Thanks.

I spoke with someone today at the factory and they said the exact same thing. It turns out the sideshots are tested at 40 mph wind speed but the factory says they are fine to 65 mph. We often see higher speeds "in bays and passes" as the weather service calls it.

The manual said to never turn dip switch 9 off, but the factory said in high wind you have to. I learned something new today! AND I wrote the guys name down who told me to for liability!

Jim Davis

I have found that certain modifications to the termination can overcome most wind conditions. Not sure of the design of this venter, waiting for a product catalog from Tjerlund. Is this an all enclosed venter that sits outside or does it install inside like a side-winder?

Jack_23

Side-Shots

The SSI & II are mounted inside with only the Stainless Steel termination on the outside of the building. The SS's differ from other power venters in that they blow the flue gases straight out the end of the venter and not down. The termination has an inverted cone installed into its throat. That cone creates resistance, which in turn creates pressure and the pressure drives the flue gases away from the building. If firing at less than 168,000BTU use the SSII...alsways. From 168,000-225,000 it is the SSI. The SSII is a better venter for less money.