Mini-Therm II Hydronic Boiler
Page 11
A means of disconnecting the electrical supply
must be provided within sight of the boiler. The pump
and boiler must be wired as shown to insure that the
pump is running whenever the boiler is firing.
WARNING
The boiler must be electrically grounded in
accordance with the requirements of the authority
having jurisdiction or, in the absence of such
requirements, with the latest edition of the National
Electrical Code, ANSI/NFPA 70, in the U.S. and
with latest edition of CSA C22.1 Canadian Electrical
Code, Part 1, in Canada. Do not rely on the gas or
water piping to ground the metal parts of the boiler.
Plastic pipe or dielectric unions may isolate the
boiler electrically. Service and maintenance
personnel who work on or around the boiler may be
standing on wet floors and could be electrocuted by
an ungrounded boiler.
Hi-Limit Switch: Factory setting is 190°F
(88°C). This setting is correct for normal operations,
and should only be changed by an authorized service
technician. Under no circumstances should the setting
exceed 220°F (104°C).
Flow Switch: If the system includes a flow
switch, it should be wired in series with the high-limit
Figure 9a. Wiring Diagram, Spark Ignition System (JVS).
Figure 9b. Schematic, Spark Ignition System (JVS).
