|reply to norbert26 |
Re: Boiler heating pipes and extended power outage.
As previously mentioned, a proper glycol mix in the water will protect the pipes from freeze down to your most likely hard freeze point. If you had PEX tubing for the water to the rads, that CAN freeze without bursting (not recommended, but it will recover when thawed).
Don't forget that warm water (room temperature or higher to begin with) with glycol will take a fairly long time to freeze even if the power goes out, and even if it gets close to its freezing point it will still not freeze quickly as long as it's circulated (ie. a poor man's backup can be hooking the circulator to an inverter connected to a couple of car batteries for a few minutes every 30 minutes).
Best bet is to get a small inverter generator (Honda or Yamaha) and have a few cans of gas around. The boiler/circulators draw very little power, and if your house is even moderately insulated running the generator for 15 minutes per hour and firing the boiler then will get you through the worst if you layer-up - this presumes that you want to 'sip' gas and make a small supply last as long as possible.
if you provide the make and model of yer pump, and the size of your system, i can give you an estimate wether glycol will require a pump change. if it would have to be changed, no biggie as 90% of residential hydronic pumps have the same flange-flange length, no mods necessary. pumps are bout 200 max. cheaper than a dedicated auto genset. glycol is about 10-20 a gallon, with most rezzy systems using 20-30 gallons max
if it aint broke, tweak it!!
currently on FiOS (kick aZZ!)