Assessments - 3, GPA: 4
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The master thermostat controls a single or multiple floor heating zones driven by slave units. The master thermostat can control up to 10 slave units. Each slave unit drives its own zone and is equipped with a GFCI test button and warning light as well as an On/Standby switch to facilitate maintenance on specific zones of the floor installation. 2. Operation Master Thermostat The master unit controls the temperature and sends a signal to slave units when heating is required. The floor sensor is connected to the master unit. The master unit is powered by the slave units. Slave Unit The slave unit receives the signal sent by the master unit and activates its load. NOTE: There must be a minimum of one slave unit ON to power the master unit. 3. Installation Turn off power to the heating system at the main power panel to avoid electrical shock. Installation should be carried out by an electrician. 3.1 Wiring Guidelines • The wire distance between the master thermostat and slave unit should not exceed 500 ft. (150 m). • The floor sensor cable should not exceed 200 ft. (60 m). • A 3-wire 20 AWG cable is recommended. 3.2 Slave Units - Installation and Wiring The slave units can operate on different voltages (e.g. 5 units @ 120 V and 5 @ 240 V). • Required parts: CT230-120GA, -120GB, -240GA or -240GB • Installation: On an electrical box • Location: Installation near the master thermostat is not required (i.e. can be installed in a utility room). • Wiring: The power bases are joined through a daisy chain connection. .. Connect the 120 V or 240 V power base wires to the power (line) and to the load (floor) using solderless connectors for copper wires, and secure the base to the electrical box. .. Affix the wiring sticker (in the CT230 box) to the base. .. Connect the slave power bases together as per FIGURE 1. .. Once installation and wiring is complete, mount the CT230 interface: a) Align the bracket tabs of the CT230 with the holes located on top of the power base. b) Secure the CT230 interface using the screw (captive). .. Switch all slave power bases to STANDBY by sliding the protective door upwards and positioning the switch to STANDBY. Install and connect the master unit (see 3.3). MASTER THERMOSTATS TH113-A/F/AF (12VDC) TH114-A/F/AF (12VDC) TH115-A/F/AF (12VDC) TH116-A/F/AF (12VDC) FIGURE 1 Connections Installation Instructions SLAVE UNITS CT230-120GA CT230-120GB CT230-240GA CT230-240GB 3.3 Master Thermostat - Installation and Wiring WARNING: Make sure all slave units are in STANDBY mode. •Required parts: TH113-A/F/AF (12VDC), TH114-A/F/AF (12VDC), TH115-A/F/AF (12VDC) or TH116-A/F/AF (12VDC) • Location: anywhere easily accessible to users. Temperature control: AF (ambient with floor limit) / A (ambient) • Install the master thermostat in the controlled area. • Choose a location about 5 ft. above the floor in an area where the temperature is stable. • Avoid locations where there are air drafts (top of staircase, air outlet), dead air spots (behind a ...
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