EPH Controls A27-HW 2 Zone Programmer - 230V Wired Timeswitch for Heating & Hot Water, 5/2 Day & 7 Day Modes

The EPH Controls A27-HW 2 Zone Programmer is a versatile, easy-to-use timeswitch designed for independent control of hot water and heating zones in domestic central heating systems, with three programmable modes for flexible scheduling.

Product Description

The EPH A27-HW is a 2-zone wired programmer that provides ON/OFF control for one hot water and one heating zone (or two heating zones). It features three operating modes – 24h, 5/2 day and 7 day – allowing users to set up to 3 ON/OFF periods per day. The large backlit LCD screen, simple push-button interface, and copy function make programming straightforward. Ideal for standard S-Plan or Y-Plan systems, it includes a holiday mode, +1hr boost, advance function, and built-in frost protection.

Key Features

• 3 operating modes: 24h, 5/2 day and 7 day for flexible scheduling.
• 3 ON/OFF periods per day: Per zone for precise control.
• Backlit LCD display: Clear, easy-to-read screen with blue backlight.
• Copy function: Quickly duplicate daily programmes.
• Holiday mode: Temporarily suspends heating.
• +1HR boost and advance: Manual overrides for convenience.
• Frost protection: Built-in 5°C safeguard.
• Keypad lock: Prevents accidental changes.

Technical Specifications

• Model: A27-HW – 2 Zone Programmer.
• Power supply: 200–240 V AC, 50/60 Hz, 8 VA.
• Switch rating: 230 V AC, 3(1) A per channel.
• Contact type: Volt-free SPST (2 channels).
• Operating modes: 24h, 5/2D, 7D.
• Programme periods: 3 ON/OFF per day per zone.
• Ambient temperature: 0°C to 45°C.
• IP rating: IP20.
• Backlight: Blue LED.
• Memory backup: 3 months (battery).

Dimensions & Weights

• Width: 140 mm.
• Height: 99 mm.
• Depth: 35 mm.
• Weight: 220 g (approx.).

System & Application Notes

• Ideal for S-Plan and Y-Plan central heating systems with separate hot water and heating zones.
• Compatible with most 230V room thermostats and wiring centres.
• Installation: Surface or recessed mounting; simple 6-terminal wiring.
• 5-year manufacturer warranty.
• Professional installation recommended for electrical connections.