Table of Contents
Advertisement
Page 22
4.4.e Ground-Fault Protection
Local codes and regulations may require the use of a ground fault interruption device (GFI Circuit
Breaker). Nuisance tripping of these devices is common and not covered under the terms of the
Manufacturer's warranty.
4.4.f External Controls / Equipment
The Great Big Bopper allows external equipment to control the heat pumps "ON" / "OFF" functionality.
A direct connection for external controllers has been provided on the microprocessor board.
1) Connect the external controller to the terminal block of the microprocessor board using at
least 18-guage low voltage.
2) For a two-wire controller (which has a thermostat) – Connect to the "Y" and "Z" connections
of the block labeled "X-Y-Z". See Figure 16.
3) For a three-wire controller (which does not have a thermostat) – Connect to the block
labeled "FS-2".
4) Program the heat pump to accept an external controller's signal. See section entitled
"Configuring for External Controller" on page 25 for more information.
Data Plate Example
Figure 15
Advertisement
Table of Contents
