Hello,
in our case (120 sqm (1300 sq ft) living area with underfloor heating, 60 sqm (650 sq ft) basement corridor area with standalone heaters), a 14 kW Wolf gas-solar heating system is planned. We are considering installing standalone heaters in two rooms in the basement, which is fully insulated. However, the plumbing company argues that the 14 kW system is not sufficient and recommends a 20 kW unit.
I find this a bit confusing and believe I have read that oversizing can lead to higher operating costs and increased wear (among other reasons, due to the minimum modulation level).
For now, I have declined this proposal. Presumably, it would make more sense to calculate the actual heating load instead of just "going for it." However, I think increasing the heating capacity just because of two standalone heaters is exaggerated.
Is there anyone in this forum who has an opinion on this?
in our case (120 sqm (1300 sq ft) living area with underfloor heating, 60 sqm (650 sq ft) basement corridor area with standalone heaters), a 14 kW Wolf gas-solar heating system is planned. We are considering installing standalone heaters in two rooms in the basement, which is fully insulated. However, the plumbing company argues that the 14 kW system is not sufficient and recommends a 20 kW unit.
I find this a bit confusing and believe I have read that oversizing can lead to higher operating costs and increased wear (among other reasons, due to the minimum modulation level).
For now, I have declined this proposal. Presumably, it would make more sense to calculate the actual heating load instead of just "going for it." However, I think increasing the heating capacity just because of two standalone heaters is exaggerated.
Is there anyone in this forum who has an opinion on this?
K
knalltüte8 Oct 2020 20:57Hi, you might want to reconsider the 14kW capacity. Our demand is 5.3kW (according to the energy consultant) for about 300m² (3,230 ft²)!
So, calculate the heat load for each individual room first, then size the heating system accordingly. Without a heat load calculation, it will just be done "as usual," which doesn’t always mean well suited or properly sized!
So, calculate the heat load for each individual room first, then size the heating system accordingly. Without a heat load calculation, it will just be done "as usual," which doesn’t always mean well suited or properly sized!
Ötzi Ötztaler20 Oct 2020 21:47
Insist on a room-specific heating load calculation according to DIN xxx
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