User manual HONEYWELL W7762A

[. . . ] The models all have similar housings and mounting procedures. IMPORTANT It is recommended that devices be kept at room temperature for at least 24 hours before applying power to allow any condensation resulting from low shipping/storage temperatures to evaporate. Wiring All wiring must comply with applicable electrical codes and ordinances. Refer to job or manufacturers' drawings for details. Power Input power provided must be 24 Vac (±20%), 50 or 60 Hz. For US installation, power must come from an energy-limited Class II Power Source (transformers must not exceed 100 VA). [. . . ] -- For installations, try to avoid areas of high electromagnetic noise (EMI). -- Some T7770 Wall Modules used with Hydronic controllers have a daisy-chain connection for the E-Bus to provide network access via built-in jack. -- For more information; see E-Bus Wiring Guidelines, form number 74-2865. Fig. IMPORTANT (US only) If the W7762 Controller is used on UL 1995 Heating and Cooling Equipment and the transformer primary power is more than 150 Vac, connect the transformer's secondary to earth ground. For these applications, only one Excel 10 controller can be powered by each transformer. Communications Wire the controller communications E-Bus using level IV 22 AWG (Belden part number 9D220150) or plenum-rated level IV 22 AWG (Belden part number 9H2201504) nonshielded, twisted pair, solid conductor wire. When possible, use Honeywell AK3781, AK3782, AK3791, or AK3792 cable (US part numbers). See E-Bus Wiring Practices, form number 74-2865, for more information including maximum lengths. Pull the cable to each controller on the E-Bus and connect to terminals 19 and 20. W7762 HYDRONIC CONTROLLER Wall Modules A variety of Excel 10 wall modules can be used with W7762 Hydronic Controllers. See T7460 Wall Modules Installation Instructions, form number 95-7610; T7560 Digital Wall Module Installation Instructions, form number 95-7620; and T7770 Wall Modules Installation Instructions, form number 95-7538 for installation details. NOTE: Wall Modules with fan speed switches must not be used with W7762 controllers. W7762 HYDRONIC CONTROLLER 19 20 19 20 BROWN ORANGE TERMINATION MODULE (209541B) Fig. Termination module connection (daisy-chain network configuration). 95-7563-3 2 W7762A, B HYDRONIC CONTROLLERS Wiring Details Connections to the Hydronic controllers are made at 2 internal terminal blocks accessible beneath the front cover. No tools are required to remove the front cover. Simply pull away from the subbase as shown in Fig. 4. IMPORTANT Screw-type terminal blocks are designed to accept 2 no more than one 14 AWG (2. 5 mm ) conductor. 2 Multiple wires that are 14 AWG (2. 5 mm ) can be connected with a wire nut. Include a pigtail with this wire group and attach the pigtail to the individual terminal block. Wire to the terminal blocks as follows: 1. Insert the wire in the required terminal location and tighten the screw to complete the termination. Ensure that the wire entering the terminal block does not extend above the numbered face of the terminal block to avoid contact between the wires and the printed circuit board on the underside of the front cover (see Fig. Use a minimum wire size of 20 AWG (0. 5 mm ) for all input / output connections. [. . . ] Attaching two or more wires at terminal blocks. OCCUPANCY SENSOR, CHANGEOVER CONTACT, AIRFLOW CONTACT, WINDOW CONTACT, MOTION SENSOR, etc. W7762 HYDRONIC CONTROLLER 1 2 3 4 5 6 7 8 9 10 NOT USED NOT USED NOT USED DIGITAL INPUT DGND LED BYPASS SETPT (for W7762B, only) SENSOR GND 24 VAC 24 VAC COM OUT 1 COM OUT 1 OPEN OUT 1 CLOSE OUT 2 COM OUT 2 OPEN OUT 2 CLOSE E-BUS (LON) E-BUS (LON) 11 12 13 14 15 16 17 18 19 20 24 VAC 24 VAC COM 120/240 VAC HEAT COM + OPEN CLOSE COM OPEN CLOSE COOL 6 T7560A, 5 T7460A, 4 T7460B, or 3 T7460E 2 1 WALL MODULE - LONWORKS NETWORK IN LONWORKS NETWORK OUT Fig. Hydronic Controller terminal assignments. Output assignments for various actuator types. Output type Floating 1-stage 2-stage 3-stage PWM Thermal Out 1 Terminal 14 15 open close on/off -- stage 1 stage 2 stage 1 stage 2 stage 3 24 Vac PWM -- 24 Vac on/off -- 13 24 Vac 24 Vac 24 Vac 24 Vac Out 2 Terminal 17 18 open close on/off -- stage 1 stage 2 stage 1 stage 2 stage 3 24 Vac PWM -- 24 Vac on/off -- 16 24 Vac 24 Vac 24 Vac 24 Vac Home and Building Control Honeywell Inc. [. . . ]