Wiring Fr-5 Thermostat - Saturn KDB - 161 GOM Manual

4. Mount the back plate to the wall using either of the above techniques(depending on the construction of the wall).
Recheck all connections both inside the unit and at the thermostat. Be careful not to pinch the control wires. Pinched
or shorted wires will prevent the system from operating. Do not over tighten wire nut connecting wires together.
5. Use countersunk type screws.
FR-5 Thermostat
CAREFULLY TIGHTEN THE 2 SCREWS WHEN CONNECTING THE WIRES. DO NOT APPLY EXCESSIVE
FORCE.
IF THE INSULATION OF THE WIRES IS DAMAGED OR IF THE TERMINALS ARE ON POOR CONTACT, THE
ROOM THERMOSTAT WILL NOT WORK PROPERLY. BE CAREFUL TO PROTECT THE INSULATION OF THE
WIRES.
Boiler
DC 20V

[Wiring FR-5 Thermostat]

- 44 -
Main
Controller
AC 220V, 50/60Hz
Grounded Power Supply
to Boiler
2 Orange Wires
KDB-GOM
Series