Hardy KBP270, Инструкция по установке и эксплуатации

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HARDY MANUFACTURING CO., INC (MODEL KBP270) PAGE 8
2-2 Location of Plumbing and Electrical Lines
To locate the connection points for plumbing and electrical lines you will need to
remove the rear access panel of the heater. The plumbing and electrical lines for your
unit must be installed underground in a water tight pipe or other suitable insulation
means. The water lines must be buried below the frost line to prevent freezing. Verify
the correct depth according to local building codes prior to installation.
The installation will require a trench wide enough to accommodate a 4” watertight pipe
or other insulation means. All plumbing and electrical lines should be installed inside
the 4” water tight pipe or other insulation means for a standard installation. An
additional pipe may be required if more than 1 zone or location is to be heated. If more
than one location is to be heated, a second 4” or single 6” watertight pipe or other
insulation means will need to be installed underground for the water lines and
thermostat wires of the second location.
This pipe will run from the rear of the unit to the location to be heated. Contained Inside
the 4” watertight pipe is a minimum of two water lines and electrical supply wire. The
listing below describes each line and related function.
1. One water supply line to heating system
2. One water return line from heating system
(Note: The supply and return lines must be at least 3/4” pipe. 1” pipe may be
required for longer distances. Some hydronic applications also require 1” pipe.)
3. One #12/2 W/Gnd NM type UF underground wire