8 | © Frio 2021 - Rev. 0.3 - Updated 3/2/2021
3.3.2
Adjusting the GFEP Trip Level
The GFEP Trip Level on the Frio S1 controller is adjustable from 30 mA to 300mA. Frio does not recommend setting
the GFEP threshold above 30 mA. In limited circumstances and always under the guidance of a licensed electrician,
the GFEP threshold may be set to a value above 30 mA. To do this, select
Settings
from the
Main Menu
, then select
Advanced Settings
from the
Settings Menu
. Select
Ground Fault Protection
from the
Advanced Settings Menu
, then
select
GFEP Trip Level
. Enter the desired trip level, then confirm to set the GFEP Trip Level.
NOTE: FRIO DOES NOT RECOMMEND SETTING THE GFEP THRESHOLD ABOVE 30 mA.
3.3.3
Fire Protection Mode
Fire protection mode disables the GFEP circuit such that, in the event of a ground fault condition, the system WILL
NOT turn off the heating circuit but will still send an alarm via the dry contact. Fire protection mode is intended to be
used only in situations where the user would prefer to damage the heat trace system instead of risking turning off the
heating system due to a ground fault condition.
NOTE: FRIO DOES NOT RECOMMEND USING FIRE PROTECTION MODE TO DISABLE THE GROUND FAULT
EQUIPMENT PROTECTION CIRCUIT.
To enable Fire Protection Mode, select
Settings
from the
Main Menu
, then select
Advanced Settings
from the
Settings
Menu
. Select
Ground Fault Protection
from the
Advanced Settings Menu
, then select
Fire Protection Mode
. When
Fire Protection Mode is turned on, the GFEP circuit is disabled.
3.3.4
Testing the GFEP circuit
To test the GFEP circuit, follow the step-by-step instructions in section 4.7
of this manual.
Periodic testing of the GFEP circuit is required in most settings. The results of the test are to be recorded on a test
form such as the one provided with the S1 Installation Instructions in Section 4. The tester shall record on the form
the date the test was performed and the results and shall ensure the form is retained by those in charge of the
building's electrical installation to be available to the authority having jurisdiction.
3.4
C
OMMUNICATION
The Frio S1 device is capable of communication with the Frio cloud platform when an internet connection is available.
Future firmware versions will support connection to other systems such as a BMS via BACnet MS/TP using three-wire
TIA/EIA 485 (RS-485) connection. The network connection may be disabled via the HMI.
To disable the network connection, select
Settings
from the
Main Menu
, then select
Advanced Settings
from the
Settings Menu
. Select
Network Settings
from the
Advanced Settings Menu,
then select
Network Connection
. You
will be asked if you want to
Disable Networking?
Select
Yes
to disable the network. To reenable the network
connection, follow the same directions and select
Yes
when asked if you want to
Connect to Network
.
3.4.1
S1-A Internet Connection
The Frio S1-A connects securely to the internet via a Wi-Fi connection or a wired ethernet connection, as described in
sections 3.4.1.1 and 3.4.1.2.
3.4.1.1
Ethernet
The S1-A can connect to the Frio cloud platform via an ethernet connection and supports 10Mbps and 100Mbps
operation. For firewall requirements, please review section 3.4.1.3 below. Use the Frio Mobile App to configure a
Frio S1-A device connected to ethernet via the BlinkUp process.