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DANGER & CAUTION
CAUTION: ALL WATER JACKET INSTALLATIONS MUST BE DONE BY A QUALIFIED
PLUMBING CONTRACTOR.
CAUTION: DO NOT OPERATE YOUR STOVE WITHOUT THE WATER JACKET AND
PLUMBING SYSTEM FILLED WITH WATER. AN EXPLOSION COULD RESULT. REPLACE THE
WATER JACKET WITH THE REAR FIRE BRICK BEFORE OPERATING.
CAUTION: PRESSURE TEMPERATURE RELEASE VALVES (PTR’s or PTV’s) SHOULD BE
TESTED AT LEAST ONCE A YEAR. PTV’S SHOULD BE REPLACED IF SPONTANEOUSLY
ACTIVATED FOUR OR MORE TIMES.
CAUTION: PRESSURE TEMPERATURE RELEASE VALVES (PTR’s or PTV’s) MUST BE
PLUMBED TO A DRAIN OR TO THE OUTDOORS IN SUCH A WAY THAT RELEASED HOT
WATER AND STEAM CANNOT MAKE CONTACT WITH BYSTANDERS.
THREE PRESSURE TEMPERATURE RELEASE VALVES (PTR’s or PTV’s) ARE REQUIRED IN
ANY SYSTEM – ONE LOCATED ON THE HOT WATER OUTLET PIPE NEAR THE TOP OF THE
STORAGE TANK; ONE LOCATED WITHIN TWO FEET OF THE WATER JACKET ON THE HOT
WATER OUTLET PIPE; AND A THIRD ON THE COLD WATER INTAKE PIPE WITHIN TWO
FEET OF THE WATER JACKET.
A hot water system can explode with life-threatening consequences if not installed properly, with
correctly rated and properly drained and located pressure temperature relief valves (PTV’s).
Wood-heated hot water systems produce scalding hot water and steam. Ensure your system includes
an operational and properly installed tempering valve. Keep yourself, children and pets away form
the faucet when turning on the hot water.
Test and replace pressure temperature release valves according to the manufacturer’s directions.
Replace PTV’s if spontaneously activated four or more times.
Never cap or remove a PTV, even temporarily.
Wood-fired hot water jackets can produce scalding hot water. A properly installed and functioning
tempering valve must be installed in the hot water outlet pipe from the storage tank, to allow cold
water to “temper” the heat of the hot water.
Replace any worn or leaking components immediately, especially pressure temperature release
valves and tempering valves. (Leaking valves are often a sign of excessive pressure build-up.)
Discontinue operating the stove, or replace the water jacket with the original firebrick, until the
defective parts are repaired or replaced.
Do not use plastic pipe with a water jacket installation.
Use only fittings rated for appropriate pressure and temperature extremes. Do not substitute
inappropriately rated fittings.
Calcification, corrosion and lime build-up restrict the flow of water and / or prevent pressure
temperature release valves (PTV’s), tempering valves, check valves, water jacket and piping from
operating properly. The system and individual fittings require regular maintenance and inspection.
Never close or cap water lines to or from the water jacket. Do not install gate valves anywhere in
the system. A water jacket and associated plumbing can explode with life-threatening force if the
flow of water to and from the jacket is restricted in any way.
Never allow the water jacket or plumbing to run empty or develop air pockets. Do not operate the
stove if the water jacket and system are not fully charged with water.
DO NOT use plumbing pipes as an electrical ground.