Drayton LP522 Thermostat Instruction Manual
Drayton LP522 Thermostat
Drayton LP522 Thermostat
Drayton LP522 Thermostat
Drayton LP522 Thermostat Instructions
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Drayton LP522 Thermostat Specifications
| Feature | Specification |
|---|---|
| Product type | Dual-channel 5/2-day electronic programmer (central heating and hot water) |
| Product range | Drayton Lifestyle LP / LPSi |
| Part number | LP522: 25475 / LP522Si: 25491 |
| Program type | 5/2-day (Monday to Friday block and Saturday/Sunday block) |
| Channels | 2, central heating (CH) and hot water (HW), programmed independently |
| Timing periods | Up to 3 ON/OFF periods per day, per channel |
| Operating modes | OFF, TIMED, ONCE, ON (selected separately for each channel) |
| Power supply | 230V a.c. +10% / -10%, 50Hz |
| Switch rating | 2(1)A 230V a.c. each switch |
| Output | 230V a.c. (programmers) |
| Mains fuse | 3A fused mains input required |
| Operating temperature | 0 °C to 45 °C (installation instructions); 0 °C to 50 °C (technical datasheet) |
| Storage temperature | -20 °C to 50 °C |
| Ambient humidity | Operating 25% to 90%; storage 15% to 95% (non-condensing) |
| Timing and programming resolution | 1 minute |
| Without mains power | Display goes blank; time and program times are always kept |
| Wiring | Fixed wiring only, to current IET wiring regulations (BS7671) |
| Mounting | Industry-standard wall-plate (universal backplate) |
| Dimensions (manufacturer drawing) | 148 mm x 93 mm |
| Required clearance | 70 mm to the right, 25 mm above, plus screwdriver access underneath |
| Recommended mounting height | 1.4 m above floor level |
| Wall fixing | No. 6 x 1" (25 mm) woodscrews with wall plugs, or a UA1 (BS4662) flush box with M3.5 x 14 bolts |
| System link setting | P (fully pumped) or G (gravity-fed hot water) |
| Terminals | N, L, 1 (HW OFF), 2 (CH OFF), 3 (HW ON), 4 (CH ON) |
| Insulation | Double-insulated (no earth needed; earth continuity terminal provided) |
| Pollution degree | 2 |
| Software class | 2 (installation instructions) / A (technical datasheet) |
| Ball pressure test temperature | 75 °C |
| Rated impulse voltage | 2.5kV |
| Directives | 2014/30/EU EMC, 2014/35/EU LVD, 2006/66/EC Batteries, 2011/65/EU RoHS |
| Applied standards | EN60730-1; EN60730-2-7 |
| Building regulations | Part L compliant (Part J in Scotland) |
| Technical helpline | 0333 7000 622 |
Drayton LP522 Thermostat Details
The Drayton LP522 is sold as a thermostat, but it is really a 5/2-day dual-channel programmer from the Lifestyle range. It switches central heating and hot water on and off according to time periods you choose. It does not sense room temperature. That job stays with the room and cylinder thermostats, so heating will not run if the room thermostat has switched it off, and hot water will not heat once the cylinder thermostat is satisfied.
From the factory, the LP522 runs a standard program where heating and hot water work together. On weekdays it switches ON at 6.30am, OFF at 8.30am, ON at 4.30pm and OFF at 10.30pm. At weekends it uses 7.00am to 9.00am and 4.00pm to 11.00pm. The middle period, ON2 and OFF2, is set to 12.00pm for both times, so it does nothing until you change it. To return to this program at any point, press SET and + together.
Programming follows a fixed order. Press SET? to see "SET PROG?", then press YES to work through four blocks in turn: CH Monday to Friday, HW Monday to Friday, CH Saturday and Sunday, and HW Saturday and Sunday. You change times with the – and + buttons in 1-minute steps, or in 10-minute steps if you hold the button down. To keep a time as it is, press SET? to skip it. If you press nothing for two minutes, the unit goes back to normal operation.
There are some rules for setting times. Periods must be entered in order (ON1, OFF1, ON2, OFF2, ON3, OFF3), and the display flashes a warning if they are out of order. ON1 cannot be the last timing before midnight. OFF3 can be after midnight as long as it is no more than 23 hours 59 minutes after ON1. The Advance button moves a channel on to its next ON or OFF point and shows ADV. It only works in TIMED or ONCE mode.
Each channel has its own Boost button. Press and hold it to add one hour, shown as BST on the display. Press again for two or three hours, and press once more to cancel. Each channel also has its own SELECT button for the OFF, TIMED, ONCE and ON modes. Changing the mode never deletes your stored times. You can go back to them simply by selecting TIMED again.
The holiday switch-off turns the system off for a set number of days. Each pass through midnight counts as one day, so leaving on Saturday morning and wanting heat again on Tuesday morning means setting 3 days. The clock is set at the factory and changes for British Summer Time on its own, using the DLS setting. The day of the week is worked out from the date, so if the weekday is wrong, you need to correct the date. The backlit LCD and red LEDs show when each channel is on.
The unit must be installed by a qualified electrician or heating engineer. It clips onto an industry-standard wall-plate, and in many cases it can replace an older programmer without changing the existing wiring. The P/G link on the back must match the system type. Always switch off the mains before removing the unit, and never fit it to a live wall-plate. The LP522Si version adds a boiler service reminder: it gives a warning 30 days before the service is due and lowers the comfort level if the service is not done.
Frequently Asked Questions (FAQs)
Can't find the answer you need? Here are some frequently asked questions about the Drayton LP522 Thermostat, and we answer them below.
