Heat Transfer Phoenix Evolution Installation & Operation Manual Download

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PREPARATION / DOMESTIC WATER PIPING

3. Total Dissolved Solids

Total dissolved solids (TDS) is a measure of all minerals and solids that are dissolved in the water.
The concentration of total dissolved solids is usually expressed in parts per million (ppm) as
measured in a water sample. Water with a high TDS concentration will greatly accelerate lime and
scale formation in the hot water system. Most high TDS concentrations will precipitate out of the
water when heated. This can generate a scale accumulation on the heat transfer surface that will
greatly reduce the service life of a water heater. This scale accumulation can also impede the ability
of the heat exchanger to transfer heat into the water. A heat exchanger that is damaged or blocked
by lime/scale accumulation must be replaced. Failure of a water heater due to lime scale build up
on the heating surface is non-warrantable. The manufacturer of the water heater has no control
of the water quality, especially the TDS levels in your system. Total dissolved solids in excess of
2,000 ppm will accelerate lime and scale formation in the heat exchanger. Heat exchanger failure
due to total dissolved solids in excess of 2,000 ppm is a non-warrantable condition.
The Phoenix Evolution is designed with a highly efficient combustion heat exchanger that transfers
heat rapidly into the domestic hot water. The minerals in the water will precipitate out when the
water is heated and can cause accelerated scale accumulation on the heat exchanger that will
affect the efficiency and service life of the unit. The Evolution Heating Module is designed with
highly efficient plate type heat exchanger on the hydroninc closed loop side that transfers energy
from one side of the plate to the other side. Water quality can also greatly impact the long term
operation of this heat exchanger so it is important to check water prior to operating the unit. Failure
of the storage tank and heat exchanger of the Phoenix Evolution will affect the warranty if the limits
listed below are exceeded. You must consult a water quality company to have the water analyzed
and treated.

Hardness : 7 grains
Chloride Levels : 100
PH levels : 6-8
TDS : 2000

PART 4: DOMESTIC WATER PIPING

A TEMPERATURE AND PRESSURE RELIEF VALVE FOR DHW

A temperature and pressure relief valve is installed into the marked port (upper right). We recom-
mend a WATTS, 40XL5 valve or equivalent for 130,000 BTU models or above input, meeting the
requirements for relief valves for hot water heaters as per ANSI Z21.22B by a nationally recognized
lab that maintains a periodic inspection of production of such listed safety device. The pressure rat-
ing of the valve must not exceed the listed working pressure of this appliance, and must be rated to
the proper BTU/hr capacity of the water heater.

PART 3: PREPARE WATER HEATER LOCATION

(CONTINUED)

CAUTION

Failure of a heat exchanger due to lime scale build-up on the heating surface, low pH
or other chemical imbalance is non-warrantable.

WARNING

Do not, under any circumstances, thread a cap or plug into the relief valve! Explosion,
serious injury or death may result! Relief valve piping must be directed to the floor or
to an open drain, but not connected directly.