User manual HONEYWELL T6376

[. . . ] XE70 SERIES THERMOSTATS HEATPUMPS & SMALL AIR CONDITIONERS PRODUCT SPECIFICATION SHEET The T6376 and T6377 are designed to control the valves, the fan and the compressor in split units, heatpumps and small air conditioners. The thermostat operates the compressor to provide either heating or cooling (as selected by the system switch) at the desired setpoint temperature. [. . . ] Compressors of greater than 0. 5 kW capacity should be switched via a contactor. Operational life : Greater than 100, 000 cycles (all loads) for thermostat contacts at 230 V~ Greater than 6, 000 operations for all manually operated switches Operating temperature range 0 to 40oC Shipping and storage temperature range -20 to 50oC Humidity range 0 to 90% rh, noncondensing Approvals : CE mark, complying with standards EN60730-1 (1995), EN55014-1 (1997), EN55014-2 (1996). Product must be wired as shown for CE compliance. DIMENSIONS EN0R8405 R3 1998 2 T6376/T6377 THERMOSTATS HEATPUMPS & SMALL AIR CONDITIONERS INSTALLATION Location The XE70 Series thermostat is the temperature control element in the fan-coil or air-conditioning system, and must be located in a position with good air circulation, on an inside wall about 1. 5 m above the floor to sense the average temperature. Do not position the thermostat in draughts, near hot or cold air sources or where it will be affected by radiant heat from the sun or other appliances. Mounting the thermostat Any XE70 Series thermostat can be directly mounted on the wall or on a conduit box (see diagram). Mounting screws are supplied for both alternatives. Wiring the thermostat The standard wiring access is via a hole in the base of the thermostat, near the top edge. The installer must be a trained service engineer 2. Disconnect the power supply before beginning installation OPERATION Sensing element The thermostat sensing element comprises two circular, flexible metal plates welded together at the rims and encapsulating a gas/liquid combination whose pressure changes in response to variations in temperature. This dualdiaphragm expands and contracts with ambient temperature changes to operate a snap-acting switch which controls the heating or cooling circuit. Switches All switches are slide switches for ease of operation. [. . . ] In both these cases the fan can be controlled separately, either by the system ON/OFF switch or by the FAN AUTO/CONT switch. Heat anticipator It is recommended that the heat anticipator is always connected for both heating and cooling operation. APPLICATION Ventilation 2-pipe fan-coil Application 4-pipe fan-coil Heatpump Air-conditioner Heat or Cool Heat/cool Changeover (auto or manual) Fan control (auto or cont) Fan speed control Valve control Compressor control T6376B T6377B T6377B T6377B 1004 1003 1011 1045 [ [ [ manual either [ [ [ [ manual cont [ manual either [ manual either Control Capability [ [ [ [ [ [ [ [ [ [ [ 3 EN0R8405 R3 1998 T6376/T6377 THERMOSTATS HEATPUMPS & SMALL AIR CONDITIONERS WIRING ANTICIPATOR HEAT C/O COOL C/O HEAT /COOL COOLING HEATING FAN REVERSING VALVE REVERSING VALVE COMPRESSOR LOAD LOAD ANTICIPATOR REVERSING VALVE COMPRESSOR HEAT C/O HEAT/COOL FAN HEAT-PUMP ANTICIPATOR HEAT C/O COOL C/O HEAT/ COOL COMPRESSOR FAN REVERSING VALVE REVERSING VALVE HEATING COOLING HEAT/ COOL COMPRESSOR LOAD FAN HEAT-PUMP AIR CONDITIONER Honeywell Control Systems Limited Newhouse Industrial Estate Motherwell ML1 5SB United Kingdom http://europe. hbc. honeywell. com EN0R8405 R3 1998 [. . . ]