The Drayton LP522 5/2 Day Electronic Programmer (25475) is a two-channel programmer offering independent timings for heating and hot water, with the flexibility of separate weekday and weekend schedules. Rather than switching on as early at weekends as during the working week, the LP522's 5-day/2-day programme option lets each channel follow a schedule that actually matches how the household lives.
With up to 3 on/off periods per day on each channel, integral boost and advance modes, and a backlit display for easy programming, the LP522 is a popular mid-range step up from a single-channel timeswitch — and is Boiler Plus compliant when installed alongside a room thermostat.
5/2 Day
Programme Type
2 Channel
Heating & Hot Water
3
On/Off Periods per Day
230V
Supply Voltage
93×148×31mm
H×W×D
1.5 Years
Guarantee
Separate Heating & Hot Water Timings
Two independent channels give separate on/off timings for central heating and hot water, rather than tying both to a single schedule.
5-Day / 2-Day Programming
Set one schedule for weekdays and a different one for weekends, so the system doesn't have to switch on as early on Saturdays and Sundays.
Boost & Advance Functions
The integral boost and advance modes allow extra heating or hot water on demand, or let the programme skip ahead to the next scheduled period.
Boiler Plus Compliant
When installed with a room thermostat, the LP522 meets the additional control requirements introduced under Boiler Plus regulations.
Backlit Screen & Simple Display
A clear backlit screen and straightforward controls make setting up heating and hot water schedules quick, even for less confident users.
Suitable for Pumped & Gravity Systems
Works with both fully pumped and gravity-fed hot water systems, giving flexibility across a wide range of existing installations.
Important Safety Information
The LP522 is designed for fixed wiring only, in accordance with current IET wiring regulations (BS 7671). Installation and wiring should be carried out by a competent person, with the mains electrical supply isolated before starting work.
Please Note
The LP522 is Boiler Plus compliant when installed alongside a room thermostat. Where a room thermostat is not already fitted, one should be added to meet current Building Regulations requirements for new or replacement boiler installations in England.
Technical Specification
Identification
Brand
Drayton
Model
LP522
Manufacturer Part Number (MPN)
25475
Range
Lifestyle LP
Country of Origin
UK
Programme & Control
Timer Cycle
5-day / 2-day (weekday and weekend schedules)
Number of Channels
2 (heating and hot water, independent timing)
Switching Periods
Up to 3 on/off periods per day, per channel
Boost / Advance
Yes
Holiday Mode
Yes
Time Change
Automatic summer/winter (BST/GMT)
Electrical
Supply Voltage
230V, 50Hz
Contact Rating
2(1)A
Wiring
Fixed wiring only
Physical
Height
93mm
Width
148mm
Depth
31mm
Colour
White
Mounting
Industry-standard wallplate
Standards & Warranty
Compliance
BS 7671, Boiler Plus compliant with room thermostat
Manufacturer Guarantee
1.5 years
Typical Applications
Households with weekday/weekend routines that differ, needing separate programmes rather than one 24-hour schedule. Fully pumped or gravity-fed systems requiring independent heating and hot water control. Boiler Plus-compliant installations when paired with a room thermostat on a new or replacement boiler.
Frequently Asked Questions
What does '5/2 day' programming mean?
It means the programmer holds one schedule for the 5 weekdays and a separate schedule for the 2 weekend days, so heating and hot water don't have to come on as early at weekends as they do during the working week.
Can heating and hot water run on different schedules?
Yes. The LP522 has two independent channels, so heating and hot water can each follow their own timings rather than sharing a single programme.
Is the LP522 Boiler Plus compliant on its own?
The LP522 is Boiler Plus compliant when installed alongside a room thermostat. A programmer alone does not meet the full requirement — a room thermostat is also needed.
How many on/off periods can be set per day?
Each channel supports up to 3 on/off periods per day, giving flexibility for morning, midday and evening heating or hot water windows.
Is this suitable for gravity-fed hot water systems?
Yes, the LP522 is suitable for both fully pumped and gravity-fed hot water systems, making it compatible with a wide range of existing installations.
BTU & WATT Calculator
Room Dimensions
Room Type
Living Room
Bedroom
Kitchen
Bathroom
Conservatory
Hallway
Glazing Type
Single Glazed
Double Glazed
Triple Glazed
External Walls
0 Wall
1 Wall
2 Walls
3 Walls
4 Walls
Insulation Level
Poor
Average
Good (New Build)
Required Heating
0
Watts
0
BTUs
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