User manual HONEYWELL ST699

[. . . ] ELECTRONIC DUAL ZONE TIMER PRODUCT DATA The ST699 electronic dual zone timer is used to control gravity, primary or fully pumped central heating systems requiring a single 24 hour programme with two ON/OFF periods per day. [. . . ] Remove the terminal cover to allow access to the wiring terminals as shown in fig. 2. Connect the systems wiring as shown by the specific applications wiring diagram. A maximum of two 2. 5 mm2 (cross sectional area) wires can be connected to each terminal as shown in fig. 3. Each wire should be stripped of insulation to a length no greater than 7mm to safeguard against the possibility of electrical shorts. 2 Systems Wiring Basic Wiring DHW ON DHW OFF CH ON CH OFF PUMP CLOCK CLOCK ST699 ST699 *A link must be provided between L-5-8 on the subbase of ST699 for all Sundial Plans, or fully controlled pumped primary systems Basic System 2 - with room thermostat BOILER Basic System 3 - as System 2 except boiler cycling controlled by room thermostat when DHW is switched OFF BOILER FUSE PUMP PUMP ROOM THERMOSTAT ROOM THERMOSTAT CLOCK CLOCK ST699 ST699 3 EN0R 8439 R0 ST699 ELECTRONIC DUAL ZONE TIMER SUNDIAL PLAN WIRING DIAGRAMS Y-Plan ROOM STAT. MID-POSITION VALVE S-Plan HEATING V4043H 2 PORT ZONE VALVE V4043H 2 PORT ZONE VALVE HOT WATER ROOM STAT. CYLINDER STAT. 3 A max PUMP PUMP CLOCK BOILER CLOCK BOILER ST699 ST699 C-Plan T6360/T4360 ROOM STAT. L641 CYLINDER STAT. V4043H 2 PORT ZONE VALVE W-Plan T6360/T4360 ROOM STAT. L641 CYLINDER STAT. V4044 DIVERTING VALVE 3 A max PUMP 3 A max PUMP CLOCK BOILER CLOCK BOILER ST699 ST699 Final Assembly NOTE: In the Sundial S, W, and Y Plan wiring diagrams, connections are shown to basic boilers only. [. . . ] a pencil) Honeywell Control Systems Limited Newhouse Industrial Estate Motherwell ML1 5SB United Kingdom Helping You Control Your World EN0R 8439 R0 [. . . ]