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AquaStar 125 VP Installation And Operating Instructions Manual page 4

Suitable for water (potable) heating and space heating

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CAUTION: RULES FOR SAFE OPERATION
If you are using the AquaStar for combined space heating and potable water heating ( see
schematic diagram below), all piping and other components connected to the system must
be suitable for potable water, (b) toxic chemicals such as those commonly used for boiler
treatment to prevent corrosion and freezing must not be introduced into the system, and
(c) if the space heating requires water temperatures higher than those required for do-
mestic, potable water, a mixing valve or other similar device must be provided to reduce
scald hazard potential. DO NOT CONVERT AN EXISTING, CLOSED HOT WATER HEATING
SYSTEM TO A COMBINATION SPACE AND POTABLE WATER HEATING SYSTEM USING
THE AQUASTAR OR ANY OTHER HEAT SOURCE.
Hot
Water
Out
Radiant Floor,
Low Temperature
Fan Coil Units,
Baseboard Heaters,
Indirect Water Heater,
Snow Melt, or
Root-zone Grid
Fig. 1 Schematic Diagram of Combination Potable Water and Space Heating System
Cold
Water
Pressure
In
Relief
Valve
Boiler Drain
Full Port
Ball Valve
Dip Tube
Aquastat
Sensor
4
Full Port
Ball Valve
Pump (Grundfos
UP26-99BF,
Taco 0011B
or equivalent)
Secondary
Room
Pump
Thermostat

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This manual is also suitable for:

125 vps