Vito Love

There are many ways to skin a cat.... or in our industry save energy. This summer I took on a boiler replacement job. The existing system was a single temperature RFH with gyp and two 400 btu cast iron boilers. Now here is the key to the story, as with many of our customers this is an absentee homeowner. So when the customer left he simply turn down the t stats. When I walked into the mech room this summer I almost melted, it was at least 100F. So there was lots of energy to be saved. We installed two Vitodens 200 15-60 boilers, which is roughly half the existing boilers inputs. When installing two of the Vitodens boilers a Viessmann cascade control is required(Vitocontrol S).

Old system was 180 degree primary loop with DHW, Snowmelt, injection loop with lower temperature RFH. Now we have a 4 temp system. #1 RFH occupied mode based on 68F room temp. #2 RFH unoccupied mode based on 45F room temp. #3 DHW priority 167F and finally #4 external demand for snowmelt at 140F. So when the customer is there the system is at a 68F heating curve, but when they are gone the heating curve is based around 45F room temp.

The icing on the cake is we also installed a phone dialer for the customer to turn up and down the home, the Vitocontrol S is connected with the alarm contacts to call when the boilers have any problems, and there is a temperature sensor for freeze protection.



Two points of my thread. #1 Viessmann has the solutions to saving energy and providing comfort like no other. Anyone, who disagrees does not understand.

#2 There are a lot of ways to save energy other than alternatives, Start with the basics boilers are the first place to start with energy efficiency.

We should all learn from Viessmann's efforts to strive for energy and comfort solutions.

There is a lot of energy to be saved out there so get some.



The last time I checked my blood is still red!



Jeffrey