Bradford BALBOA M3, Installation & Operation Manual

Page: 21 / 50

Residential Spa
pg. 21
File: RES_Hottub_manual_021116
Installing Your Spa
Remote Equipment Only - Installing Freeze Sensor
When freezing conditions are present (the temperature drops below 38˚F), the freeze sensor on your
equipment pack will activate on all pumps to prevent the water from freezing. The freeze sensor is
connected to the equipment pack by a 25’ cord.
To install the freeze sensor:
1. Locate the labeled wire connected to the freeze sensor.
2. Place the freeze sensor in the area that is most susceptible to freezing conditions.
NOTE: The area that is most susceptible to freezing will differ, depending on where you placed the
equipment pack. For example, it could be an area that is not exposed to direct sunlight. For a two
pump system, make sure the sensor is installed on the jet pump (return line).
To install the freeze sensor: 1.
1. Install the freeze sensor mounting into the
tee location. To prevent water leaks, use
Teflon tape, silicone, or a polyurethane
sealant.
CAUTION: Do not use petroleum-based sealants.
2. Loosen the domed sealing nut (#1) on the
fitting.
3. Insert the freeze sensor (#2) into the fitting
(#3) until the cable end of the sensor is flush
with the domed sealing nut (#1).
4. Tighten the domed sealing nut (#1) onto the
fitting (#3). Make sure water is not leaking
into the fitting.
Figure 7 : Freeze Sensor tee mounting
Connecting the Equipment Pack to Your Power Source
The Electronics/Control Module on your equipment pack must be connected to your power source
before you can test your spa setup. See (Appendix A) for the electrical requirements for one and two
pump configurations using both electric and gas heaters. See the appropriate manual for hooking up
a gas heater or heat exchanger.
DANGER! ALL ELECTRICAL WORK MUST BE DONE BY A LICENSED ELECTRICAL CONTRACTOR IN STRICT
ACCORDANCE WITH THE NATIONAL ELECTRICAL CODE AND/OR LOCAL CODES. The following steps
are for reference only, and should not be attempted by an unlicensed contractor. Failure to take
precautionary steps could lead to serious injury or death.
There are two separate sets of wires running from the circuit breaker box to the equipment pack.
Refer to the electrical schematics on your equipment pack.