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Logicboks · Optimiser compensator · BACnet
SYX661
SYX661 is a compact heating optimiser compensator for NTC10 sensors, with versions to replace Trend, Honeywell AQ2000, Satchwell CSC and Drayton Theta II controllers.
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Part numberSYX661-CSC-V-T
Datasheet, PDF
- Quotes answered within 24 hours, no account needed
- DHL, under 15 kg £13.50 ex VAT
- Technical support from the people who commission it
Specification
Communication
- Interface
- Ethernet 10/100 Base-T with built-in web server
- Protocol
- BACnet server over Ethernet
Electrical
- Power supply
- 110 to 230 V AC ±10%, 50/60 Hz, 21 VA (time-delay fuse 1.25 A); relays do not supply voltage
Environment
- Operating temperature
- 0 to 50 °C
- Humidity
- Up to 95 % r.h., non-condensing
- Protection
- IP20 (controller) IP rating
Performance
- Inputs
- 7 analog, including outside, VT flow, space, boiler flow, boiler return and hot water flow temperatures; 2 digital, volt-free normally open, for overrides
- Outputs
- 1 analog; 6 relay outputs, 250 V AC, 5 (3) A: valve open, valve close, pump enable, boiler 1 enable, boiler 2 enable, hot water
- Approvals
- CE: EN 61000-6-3:2001 (emissions), EN 61000-6-2:2001 (immunity)
- Sensor element
- NTC10
Physical
- Mounting
- DIN rail; removable terminal blocks
- Dimensions
- 143.5 x 90 x 67 mm (controller only)
- Weight
- 500 g (controller only)
Part numbers
From the manufacturer's datasheet for SYX661.
Overview
The SYX661 is an optimiser compensator controller for simple heating circuits, designed around NTC10 temperature sensors. It controls a single compensated heating zone through a mixing valve or boiler modulation, with a heating time schedule, pump control with optional room sensor influence, and a hot water output. It is available as a direct replacement for Trend controllers and in versions for Honeywell AQ2000, Satchwell CSC (with or without time clock) and Drayton Theta II controllers, all using NTC10 sensors. The controller has a backlit text display with set knob and buttons, plus a built-in web server so settings, time schedules and overrides can be changed from a browser. Functions include optimum start and stop, day economy, three-stage frost protection, pump run-on, up to two boilers with lead rotation, valve and pump exercise, a 30 minute service mode, four heating periods per day and Auto, Summer, Continuous, Frost and Service overrides. Alarm messages are logged with the event time. It mounts on a DIN rail and runs from a 110 to 230 V AC supply. A TPC35 or TPC56 remote colour touch panel (as SYX-TPC35 or SYX-TPC56) or a TPC070 (SYX-TPC070) can be added, and mounting brackets and a wall box are listed separately.