Fred Marshall wrote:

"David" wrote in message
om...
Hello, I have an AquaTherm furnace connected with a 40 gallon hot
water heater. When the furnace is on and using the hot water heater,
I get either no or only luke warm water in the house. Does anyone
have any idea what the problem is? Is my hot water heater going, or
is there any adjustment that I can make? Thanks in advance!

If the [ommited] diagram is right, that raises another question:
Aren't you supposed to avoid situations where the water system
that drives the houshold heat is sharing/interchanging water
with the potable water supply?

--Goedjn