Instanta WMSP156 15 Litre Wall Mounted Auto Fill Water Boiler
Product Description
The Instanta WMSP156 is a wall-mounted, auto-fill water boiler that draws directly from the mains cold water supply and maintains a continuous supply of near-boiling water throughout the service day....
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 that draws directly from the mains cold water supply and maintains a continuous supply of near-boiling water throughout the service day. Because it refills automatically, there is no manual topping up and no risk of running dry during a busy period. The wall-mounted format keeps the unit off worktops and floors entirely, which is a practical advantage in compact service areas, hospitality suites, and staff canteens where counter space is often at a premium.
In day-to-day service, the unit performs reliably at steady throughput levels typical of small to medium-volume sites — cafés, hotel serveries, smaller restaurant operations, and similar environments where hot water demand is consistent rather than exceptionally high. The stainless steel construction holds up well under commercial use, and the built-in diagnostics help flag issues before they cause unexpected downtime.
Several features are worth noting from an operational standpoint:
- ECO mode reduces energy draw during quieter periods without affecting water availability
- Adjustable temperature control lets operators match output to the application
- A 7-day programmable timer aligns operating hours with your actual service schedule
- A filter change indicator removes guesswork from maintenance routines
- Built-in diagnostics support early fault detection and help reduce unplanned downtime
Installation requires a mains cold water connection and a hardwired single-phase electrical supply. Both services must be accessible at the intended mounting position — worth confirming before ordering, particularly in older or refurbished premises where pipework and electrical points may not be ideally located. A qualified plumber and electrician will be needed for the installation.
The WMSP156 is well suited to sites where demand is steady and space is limited. If your operation runs multiple simultaneous service points or faces significantly higher peak throughput, it is worth considering a higher-capacity model before committing to this one.
If you would like to talk through whether this unit matches your service volumes or want to clarify the installation requirements at your site, the team is happy to help before you go ahead.
Key Features
- Auto-fill from mains supply eliminates manual topping up during service
- Wall-mounted design frees worktop and floor space in compact kitchens
- 7-day programmable timer aligns operating hours with your service schedule
- ECO mode reduces energy consumption during low-demand periods
- Built-in diagnostics provide early warning of faults before downtime occurs
Operational Benefits
- Continuous hot water supply maintained throughout the full service day
- Reduced running costs through scheduled operation and ECO mode
- Filter change indicator keeps water quality consistent with minimal guesswork
- Wall-mounted format suits high-traffic areas where floor space is restricted
- Reliable performance at steady demand levels typical of small to medium sites
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
- The WMSP156 is well matched to small and medium-volume sites with steady, consistent demand throughout the day. If your peak periods involve very high simultaneous throughput — for example, a large café with multiple service points all drawing hot water at once — it is worth discussing a higher-capacity unit before ordering, as a larger boiler may serve you better.
- The unit requires both a mains cold water connection and a hardwired single-phase electrical supply at the mounting position. You will need a qualified plumber and a qualified electrician to carry out the installation. Before ordering, it is sensible to confirm that both services are accessible in the right location, particularly in older premises where existing pipework or electrical points may not line up with where you plan to mount the boiler.
- The 7-day timer lets you set the boiler to switch on and off in line with your actual service hours, so it is not drawing power overnight or on days when the site is closed. Combined with ECO mode, which reduces energy draw during quieter periods within the service day, this can make a meaningful difference to running costs over time without affecting water availability when you need it.