42332_rev B
Heater Installation Guide
2
3S Heater Installation
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3030 Airway Avenue, Suite B | Costa Mesa, CA 92626 | p 714.384.0384 | www.balboawater.com
Specifications subject to change without notice.
Nomenclature
AGENCY PREFIX
The agency prefix is noted
on the identification label,
which is on the top surface
of the system pack.
In this example the agency
prefix is BP20.
System Pack
Agency Prefixes: BP20, BP21, BP501, BP6
System Pack Without Cover
Heater
Connector
M7 Temperature
Sensor Connectors
Mounting
Nuts
Circuit Board Label
Circuit Board
Identification label
Each connector is labeled
on the circuit board. In this
example the label is J29.
The location of J29 may vary
depending on which system
pack model you have. All
other connector locations
vary, depending on the
system pack model.
A
B
D
Third Temperature
Sensor Switch
Connector
E
Heater
Posts
C
3S Heater
J29 is a heater disable switch input.
