At 08:23 AM 3/2/2011, Dave Mcneely wrote: >so, does that mean that opening the valve to heat the rear heater >would be dumb? It does the same thing -- shunts the coolant from >the delivery hose through the rear heater to the return hose. The valve when full open has a crescent-shaped opening with a small fraction (quick guess would be a fifth) of the area of the inside of the plastic nipple. The two situations are not comparable even without factoring in that the otherwise wasted heat is available at the turn of a switch. Incidentally that valve also does not close completely: there's a tiny channel to allow just enough circulation to keep the coolant in the heat exchanger from becoming stagnant and attacking the aluminum. Yrs, d |
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