EZB-Eco Installation Manual

09/01/2020 7 BI601
5. Piping between the EZB-Eco and hydronic system manifolds is shown on drawing BX603. When
following this diagram, the water fill procedure becomes very simple and almost guarantees the
removal of all air or prevents air locking problems. Experienced hydronic heating installers may be
able to eliminate some components but the inclusion of these components guarantees installation and
initial operating success. Material used for piping between the EZB-Eco and the manifolds may
include copper, black iron or oxygen barrier PEX tubing rated for hydronic heating.
6. When connecting pipe of dissimilar metal to the inlet and outlet of the boiler, dielectric unions must
be used.
7. To ensure safe boiler operation, adequate system pressure must be maintained. Once all the air is
purged form the system, adding additional water may be required to bring the system up to operating
pressure, 12psi.
8. Depending upon water conditions, determine whether water additives are necessary.
9. Purge and fill water system. Do not allow the electric element to come on until the system is purged
and you have verified proper water circulation. If the pump is needed, jumper the two orange wires
in order to operate the pump directly from its own 120-volt source.
10. Purge each loop individually, one at a time.
11. Check for leaks.