42332_rev B
Heater Installation Guide
4
3S Heater Installation
©2019 Balboa Water Group. Single Source Solution. All rights reserved.
3030 Airway Avenue, Suite B | Costa Mesa, CA 92626 | p 714.384.0384 | www.balboawater.com
Specifications subject to change without notice.
Step 4
Disconnect both M7 temperature sensors (A) from J16
and J17 on the circuit board. The connectors have
locking tabs (refer to page 1). Depress the locking tab
before disconnecting the sensor from the circuit board.
Step 5
Remove the heater from the system pack. The heater
is mounted to the system pack with two nuts on
mounting posts (D). Loosen the nuts with an open
ended 3/8” (9.5mm) wrench, and remove the heater.
Step 6
Install the new heater into the system pack, and
tighten the two mounting nuts (D).
Step 7
Connect the M7 temperature sensors (A) to J16 and
J17 on the circuit board. The locking tabs only align
one way on the J16 and J17 connectors (refer to page
1). Misalignment may cause damage.
Step 8
Connect the third temperature sensor switch (view “E”
on page 2) to the circuit board at J29. The connector
has alignment tabs that only align one way on the J29
connector (view “E” on page 1). Misalignment may
cause damage.
Confirm that “HTR DISBL” or “HTR DSBL” is written near
J29
on the wiring diagram (view “H” and “ I “ on page
1). If J29 isn’t thus labeled as Heater Disable, the 3S
heater is incompatible with this system pack.
If something is already connected to J29,
please contact our technical support at
Step 9
If the agency prefix is BP501 or BP6, use an applicator
stick to apply Nyogel 760G to the three metal contacts
(G) on J46.
Step 10
If the agency prefix is BP501 or BP6, connect the heater
connector (B) to J46 on the circuit board.
If the agency prefix is BP20 or BP21, connect the heater
connector (B) to J44 on the circuit board.
You will hear a click when the connection is secure.
Step 11
Install the system pack lid and tighten the two
mounting screws (F).
Step 12
Power On the system pack at the GFCI
or circuit breaker.
If the agency prefix is BP20 or BP21, use an applicator
stick to apply Nyogel 760G to the three metal contacts
(G) on J44.
Cover all surfaces of the metal contacts. Nyogel
provides corrosion protection.
System pack with cover
F
Three Metal Contacts
G
