Home won't stay warm

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Old 12-15-16, 06:52 PM
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Home won't stay warm

I have an e classic centralook boiler 1450 outside wood burner. Water comes in to a plated hx at 185 to 195 degrees with 1 1/4" line and comes out. The house water gets sucked out of hx through propane hx out to the base board heater back through 6 zoning valves and to hx. For the month November the temp stayed at around 20 to 30 degrees worked amazing... now the temperature dropped to 5 to 10 with wind chill in the negative. Now I can't keep my two biggest rooms above 64 degrees with 4 of the zones turned off. I just bought this house old farm house with log cabin addition... farm house 1875 log cabin 2002. There was a 2 person family and didn't really keep the farm house warmer then 40 to 50... I'm heating the whole 2800sq ft home. I'm heating the living room of log cabin and living room dining room and bathroom of farm house (1 zone). Could the HX be under sized? The propane boiler was told heated the whole house but too expensive so they installed boiler 3 years ago. So circulating motor should be good. I turned off all the zones (ball valve) took off circulating pump and made sure it worked. Put everything back together and started pump and bled off everything I could... I felt the cold water flow out to the hx. Any help would be great...
 
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Old 12-16-16, 06:34 AM
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I'd start by measuring the inlet and outlet temperature of both sides of the exchanger. Easiest would be a non-contact IR thermometer.
 
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