Ouellet OTH770 Manuals

OTH770 400-609-011-A 2009-07-29 1/3 OTH770 User Guide Non-programmable Thermostat The OTH770 thermostat has been designed for floor heating systems. It has built-in ground fault protection and an input for connecting a floor sensor, supplied with the thermostat. Depending on the mode of application you choose, each thermostat can be used to control the floor temperature (F mode) or to control the ambient temperature while keeping the floor temperature within comfortable and safe limits (AF mode). Your thermostat has Vacation Mode which can be activated by connecting an Aube telephone controller (CT240 or CT241) or any other remote control device equipped with a normally open (NO) dry contact. 1 Switch the thermostat Off when it is not in use (e.g., during sum- mer). To reset the ground fault protection, switch the thermostat to Off and back to On. 2 The image disappears when heating is off. 3 The temperature limits are used only if your thermostat is config- ured in AF mode. 4 When the ground fault protection is activated, GFI appears on the screen and the TEST button-light at the top of the thermostat illumi- nates (see section 7). n Turn off power to the heating system at the service panel in order to avoid any risk of electrical shock. o To remove the thermostat faceplate, loosen the screw at the bot- tom of the thermostat and lift the bottom of the faceplate out- wards towards you. (The screw remains captive on the base.) p Connect the thermostat wires to the power supply and to the load using solderless connectors for copper wires. n Description 1. Floor Limit Off On Temperature adjustment buttons On/Off switch 1 Heating intensity 2 Temperature display Appears when the setpoint temperature is displayed Vacation mode indicator (see section 4) Ground fault indicator 4 Floor temperature limit button 3 o Installation 2. CAUTION • Installation must be carried out by a qualified electrician and must comply with national and local electrical codes. • Use this thermostat only for resistive load. • Do NOT install the thermostat in an area where it can be exposed to water or rain. • To prevent severe shock or electrocution, always turn the power OFF at the service panel before working with wiring. • Install the thermostat onto an electrical box. • This thermostat has tinned copper wires for line and load con- nections. Use special CO/ALR solderless connectors if you connect the thermostat to aluminum wires. Base Faceplate L2(N) L1(L) L2(N) L1(L) Load Power supply Red Black Red (White) Red Black Black Black 240 V (120 V) Red (White)