Instructions for Whole House Water Filter
Product Codes: WH16FIL3 | WH32FIL3
Dear Customer
Thank you for buying our whole house water filter system. We recommend using a professional plumber to install it. It should take them one to two hours, depending on how much pipework needs altering.
Please Note
1) Check your flow rate first. Each unit is designed for a maximum / peak flow rate: 16 litres per minute for WH16 codes (typically a standard property) and up to 32 litres per minute for WH32 codes (typically a larger property). If you go over the rate for your model it won't break the filter, but it won't work properly. So please do a flow rate check in your property before going to the expense of hiring a plumber. See our guide: Finding your water flow rate.
2) Fit a by-pass. A standard by-pass is highly recommended, so the unit can be isolated later for cartridge changes, or to save the filter's life when it isn't needed, eg when watering the garden. Any installer should do this as standard, but you may want to check with them.
3) Fit a Pressure Reducing Valve (PRV). If you don't already have one, insist that your plumber fits a PRV to protect the unit from an unexpected rise in water pressure. This is very rare, but it does happen (eg because of overnight water utility works) and can cause failure or possible flooding. For example, the Watts 2282500 costs about £15.
4) Fitting outside? If the unit is fitted outside the property, insulate it to avoid frost damage. The unit must not freeze.
Future Cartridge Renewals
WH16FIL3
- Filter cartridge: change every 12 months. Re-order code FIL16S.
WH32FIL3
- Filter cartridge: change every 12 months. Re-order code FIL32S.
Notes for the Plumber
Please read the customer information above.
Essential points:
- A system bypass valve should be installed on every system, to make installation easier.
- You must make sure a Pressure Reducing Valve (PRV) is fitted, to protect the unit from an unexpected rise in water pressure.
What you need: a bypass, a PRV, and connections to the 1 inch BSP ports.
The filter ports are 1 inch BSP. Do not use tapered males.
When attaching the pipe connectors, we strongly recommend a liquid sealant such as Loctite 577. If you must use PTFE tape, don't overdo it: use no more than 10 complete wraps. (The brass screw thread is robust, but it might crack if over-forced.)
The water enters the filter on the left-hand side.
Positioning
The system must be operated upright. Do not lay it down while it's in use. It can be placed in any position for shipping and installation, but must be vertical when operating.
Make sure the system is level.
When positioning the unit, allow enough space underneath for cartridge changes. You can remove or adjust the top metal bracket if necessary, but take care that this doesn't put undue stress on the unit.
Do not let the system freeze.
Important: Close the Housing Correctly
The unit must be closed fully, or it may leak sooner or later. The lower white bowls screw up to the head and must click-lock closed. Note the red lock.
You can get fairly close to closed by hand, then use the wrench for the final tightening. BUT if you need a lot of force with the wrench to close it, there is a problem. Check the following:
a) The cartridge inside the housing must be closed properly. On cartridges where a slot joins the lid to the lower housing, these must be slotted correctly (this is very simple to do).
b) Cartridges that screw-tighten must be fully screwed up.
c) The small rubber ring / gasket on top of the cartridge must be seated correctly in its recess / ring.
d) You can test by simulating fitting the white sump to the head: (i) put the cartridge in the white sump, then (ii) simulate the final tightening position. The system must close without problems.
Commissioning the Unit
1) Once the unit is ready, ie the pipework is complete and the flexible hoses are attached, flush the system. Some noise will be heard during flushing.
2) Check for any leaks.
3) Run the cold water tap nearest the filter for 5 minutes to release any trapped air. Repeat with all the other cold water taps in the property, and flush any toilets once.
Specifications
- Inlet / outlet connection: 1 inch BSP straight
- Temperature: 40°F – 110°F (4°C – 43°C)
- pH: 6.5 to 8.5
- Ferrous iron, max: 0.3 mg/L
- Manganese, max: 0.05 mg/L
- Copper, max: 1.3 mg/L
- Water pressure: 15 PSI min, 100 PSI max
Any Problems? Please telephone 020 8761 6611
Important Note re Reminders
It's important to change your cartridge on time.
We will email you reminders when it's time to change, but please make sure you whitelist our email address so these reminders aren't sent to spam. And/or set an alarm now on your mobile.
Your feedback and any suggestions on how we can improve our service are always appreciated.
Thank you
Sales Admin Team
Telephone 020 8761 6611
Water Filter Instructions / Guides for fitting and installing



