King Electric GPT 3 - Manual (Page 15)

Page 15 of 21
Custom Settings
General
The performance of the GPT–3 can be adjusted to match the needs of the application
using the DIP switch as shown in Figure 6. Accessing this switch usually requires removing
the electronic assembly from its housing. Figure 7 shows the screws that need to be removed to
access the DIP switch.
Make any DIP switch changes before making the supply voltage and heater connections.
Otherwise, it will probably be necessary to break and re-make these connections.
DIP switch poles that do not require change are labeled ‘NC’. Spare switch poles are
labeled ‘---’.
GFEP
Mode
Fire protection sprinkler and certain other critical applications consider GFEP secondary in
importance to freeze protection. The GPT–3 accommodates these applications by warning of a
ground fault condition while it exists. Heaters operate independent of the ground fault condition.
Automatic GFEP Reset Setting
Pole 1 2 3 4 5 6
Setting On NC NC NC --- ----
GPT ® –3
TRACON ®
GFEP
FAULT SUPPLY
HEATER
GFEP
RESET
TEST
HEATER
FAULT
Temperature
20
15
68
59
25
77
10
5
50
41 °C
°F
We Manage Heat ®
http://www.networketi.com
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Figure 7. Removing electronic assembly from housing