HARDY MANUFACTURING CO., INC (MODEL H25) PAGE 20
Section IV 4-2 Typical Diagram for Plumbing
Hydronic System
Water Pipes must be designed for hot water service (ex. Copper, cpvc, or
polybutylene.) Pipes should be installed in a 4” watertight pipe or some other
type of insulating means to prevent heat loss from heater to heating system. Use
only copper, brass, or stainless steel fittings. Do not use galvanized or black iron.
Turn off the makeup water for the existing system. Manual filling of the wood heater
or the electric fill option will supply makeup water for the wood heater and the
existing hydronic. Close all automatic air vents on the existing system.
Valving arrangement may
be located on suction side
of pump if space is limited
on pump discharge.
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