AquaStar 80 VPS - Manual (Page 4)

4
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.
Fig. 1 Schematic Diagram of Combination Potable Water and Space Heating System
Radiant Floor,
Low Temperature
Fan Coil Units,
Baseboard Heaters,
Indirect Water Heater,
Snow Melt, or
Root-zone Grid
Room
Thermostat
Pump (Grundfos
UP26-99BF,
Taco 0011B
or equivalent)
Dip Tube
Secondary
Pump
Hot
Water
Out
Boiler Drain
Pressure
Relief
Valve
Cold
Water
In
Full Port
Ball Valve
Full Port
Ball Valve
Aquastat
Sensor