Full Product Manual

664A0300 - Rev. B
11
Filling the Inner (Domestic Water) Tank
• Never use the Excellence unless inner and
outer tank of the water heater is completely
filled with water.
• Inner tank of the Excellence water heater
must be completely filled and pressurized
before pressurizing outer tank.
1. Close domestic water drain valve.
2. Open domestic water isolation valves on the
water heater piping.
3. Vent air from inner (domestic water) tank by
opening nearest hot water faucet. Fill domes-
tic water tank completely by allowing water to
run until there is a constant flow of water.
4. Close hot water faucet.
Filling the Outer (Boiler Water) Tank
• Never use the Excellence unless inner and
outer tank of the water heater is completely
filled with water.
• Inner tank of the Excellence water heater
must be completely filled and pressurized
before pressurizing outer tank.
Reference the PRESTIGE Excellence boiler
manual for boiler start-up and guidelines for
filling the boiler.
If antifreeze is used in boiler water, check concen-
tration. Boiler water (including additives) must be
practically non-toxic, having toxicity rating or class
of 1, as listed in Clinical Toxicology of Commercial
Products.
Do not use automotive, ethylene glycol or
petroleum-based antifreeze. Do not use any
undiluted antifreeze. This can cause severe
personal injury, death or substantial property
damage.
Setting the Thermostatic Mixing Valve
The thermostatic mixing valve controls the
outlet hot water temperature delivered to
the faucets.
POTENTIAL SCALD HAZARD. The mix-
ing valve must be installed on the Excellence.
Removal or adjustment of the mixing valve
will create a potential scald hazard resulting
in severe personal injury or death.
If any adjustment needs to be made to the valve’s
temperature setpoint refer to the manufacturer’s
instructions included with the valve.
NOTICE
NOTICE
WARNING
WARNING
CAUTION
CAUTION
Water Heater Start-Up