17-11-2016, 01:49 PM
It's not a combi-boiler, Sam.
I could well believe that, Jeffrey. After all, when on, the water will be 70 degrees or so. The mass of water sitting in the heat exchanger will gradually cool, but the mechanisms for heat loss are limited. Conduction via the pipes will be one, air flow through the flue will be limited because the fan has been off. There won't be much air movement at all inside the boiler because the casing is sealed. Mine has some insulation on the outer cover - not sure if yours does - but certainly mine stays warm long after it has stopped working at 10PM each night. Bear in mind my flow temperatures are much lower than yours because of WC. Perhaps only 35 or 40 degrees at the moment. And I've for all 4 of my pipes connected up, so I've more conduction via the water happening.
EDIT: Posts crossed...
I could well believe that, Jeffrey. After all, when on, the water will be 70 degrees or so. The mass of water sitting in the heat exchanger will gradually cool, but the mechanisms for heat loss are limited. Conduction via the pipes will be one, air flow through the flue will be limited because the fan has been off. There won't be much air movement at all inside the boiler because the casing is sealed. Mine has some insulation on the outer cover - not sure if yours does - but certainly mine stays warm long after it has stopped working at 10PM each night. Bear in mind my flow temperatures are much lower than yours because of WC. Perhaps only 35 or 40 degrees at the moment. And I've for all 4 of my pipes connected up, so I've more conduction via the water happening.
EDIT: Posts crossed...
