Instanta WMSP156 15 Litre Wall Mounted Auto Fill Water Boiler
Product Description
The Instanta WMSP156 is a wall-mounted, auto-fill water boiler designed to provide a continuous supply of near-boiling water throughout the working day. It draws directly from the mains cold water...
Specifications
- Capacity (litres)
- 15
- Country of origin
- UK
- External depth (mm)
- 250
- External height (mm)
- 530
Product Description
The Instanta WMSP156 is a wall-mounted, auto-fill water boiler designed to provide a continuous supply of near-boiling water throughout the working day. It draws directly from the mains cold water supply and refills automatically, so there is no need for manual topping up and no risk of running dry during a busy service period. The stainless steel construction holds up well to the demands of a commercial environment.
This type of unit is commonly found in cafés, hotel serveries, staff canteens, hospitality suites, and smaller restaurant operations where hot water is needed reliably but a large free-standing boiler would be impractical. Keeping the unit off the worktop and floor is often a genuine operational advantage in compact or high-traffic service areas, and the wall-mounted format addresses that directly.
Several features help manage running costs and reduce day-to-day maintenance demands:
- ECO mode reduces energy draw during quieter periods without affecting availability
- Adjustable temperature control lets operators match output to the application
- A 7-day programmable timer aligns the boiler's operating hours with your actual service schedule
- A filter change indicator removes guesswork from maintenance and supports consistent water quality
- Built-in diagnostics flag issues early, helping to avoid unexpected downtime
Installation requires a mains cold water connection and a hardwired single-phase electrical supply. Both services need to be accessible at the intended mounting position, which is worth confirming before ordering — particularly in older or refurbished premises where pipework and electrical points may not be where you need them. A qualified plumber and electrician will be required for installation.
The WMSP156 suits small to medium-volume sites where demand is steady and worktop or floor space is limited. If your operation runs multiple service points simultaneously or has significantly higher peak throughput, it is worth exploring higher-capacity alternatives before committing.
If you are weighing this up against your service volumes or are unsure about the installation requirements at your site, feel free to have a conversation with the team before placing an order.
Key Features
- Mains-fed auto fill maintains continuous hot water supply without manual topping up
- Wall-mounted stainless steel construction keeps floor and counter space clear
- 7-day programmable timer aligns operating hours with your service schedule
- ECO mode reduces energy consumption automatically during low-demand periods
- Built-in filter change indicator and diagnostics support proactive maintenance
Operational Benefits
- Eliminates manual refilling, reducing interruptions during busy service periods
- Frees up valuable worktop and floor space in compact service areas
- Programmable operation cuts energy use outside of trading hours
- Early fault alerts help prevent unexpected downtime during service
- Consistent water quality maintained through timely filter change prompting
Specifications
- Capacity (litres)
- 15
- Country of origin
- UK
- External depth (mm)
- 250
- External height (mm)
- 530
- External width (mm)
- 370
- Extra information
- WRAS approved
- Gtin
- 0791689617435
- Heat-up time
- 16 mins
- Machine output
- 57 litres per hour
- Material
- 304 grade stainless steel
- Power rating (kw)
- 6
- Power type
- Single Phase Hardwired
- Rapid draw-off ltr
- 15
- Tap protrusion
- 90
- Temperature range (deg c)
- 80 - 98
- Weight (kg)
- 12.4
Downloads
sureflow premium wall mounted installation user manual 2359500d-4f79-4f23-b419-59370bcd654fwmsp156 specification sheet
Frequently Asked Questions
- A 15 litre auto-fill boiler works well for sites with steady, moderate hot water demand — a café serving filter coffee and teas throughout the day, a hotel servery, or a staff canteen, for example. Because it refills automatically from the mains, available capacity is less of a constraint than it would be with a manual-fill unit, but if you are running multiple service points simultaneously or experiencing very high peak demand, a higher-capacity model is likely to be a better fit.
- The unit requires a mains cold water connection and a hardwired single-phase electrical supply, both accessible at the intended wall position. You will need a qualified plumber and electrician to carry out the installation. It is worth confirming that both services are in the right location before ordering, particularly in older or refurbished premises where existing infrastructure may not run where you need it.
- Yes — the WMSP156 includes a 7-day programmable timer, which allows you to set the boiler to come on ahead of your opening time and power down after service closes. Combined with the ECO mode, this makes it straightforward to avoid unnecessary energy use overnight or on days when the site is closed.