Unvented Multipoint Floor Mounted
90 and 140 litre


Suitable for hand washing and dish washing where a number of hot water outlets are required such as kitchens, schools, restaurants, washrooms, healthcare environments and offices. The ideal solution for light industrial, commercial and domestic hot water requirements. Can be used for a shower - check that the capacity is suitable for your flow rates and showering time/ frequency.



• Slender slimline design
• Mains pressure flow rates
• Floor standing, no wall mounting necessary
• Can be used with regular taps, including mixers
• 3.0 kW element for fast heat up time
• Element on indicator
• External mechanical temperature control
• Easy inspection and maintenance
• Access to element and thermal cut out beneath the thermostat housing
• Anode located at the top of the unit meaning only partial drain down is required to inspect or replace
• Patented technology ensures incoming cold water does not immediately mix with stored hot water in the tank making more hot water available
• Glass lined tank, 3 year tank warranty
• Comes complete with unvented accessory kit
• Optional thermostatic mixing valve available
• Erp rating C
• Cable pre-wired (1.5m), to thermostat housing

Technical Specification

Outer Casing
White powder coated steel

Heating Element
Stainless steel incoloy

Mechanical up to 65°C

Water Tank
Glass lined steel

Replaceable grey magnesium anode (inspect at least annually or more regularly in scale/ aggressive water conditions)

High density polyurethane foam (CFC free)

Overheat temperature protection (manual reset).
Factory fitted temperature and pressure relief valve (set at 7 bar 90°C).
Pressure reducing valve (set at 3 bar).
Pressure relief valve at 6 bar.
Use with a thermostatic mixing valve to maintain hot water supplied to user at constant, safe temperature.

IP Rating

Floor standing only. Must be installed vertically.
Plan installation carefully to allow sufficient space for all controls and future maintenance.

Unvented Accessory Kit
Supplied kit must be fitted.
Contains expansion vessel with fixing bracket (8L for SR90, 12L for SR140**), inlet group, flexible hose and 2 tundishes.

Must be installed by a suitably qualified person.
Minimum water pressure 1 bar.
Maximum water pressure to pressure reducing valve 12 bar.
Working water pressure 3 bar.

Water Connection
1/2" MBSP for 90L and 3/4" MBSP for 140L

Electrical Connection
Installation must comply with current IET regulations.
The product should be connected to the fixed wiring of the property via a suitably rated isolating switch with a contact separation of at least 3mm in all poles.

CE, UKCA, KIWA, Building Regulations

Standard Warranty
1 year parts or replacement warranty on electrical components.
3 year tank warranty.

Data Tables

Product CodeCapacity (litres)Power (kW)Heat Up Time (mins)*Standing Loss (kW/day)

* Minimum theoretical heat up time for 70% tank capacity from 10°C to 60°C

** Expansion vessel dimensions, 8L H 305mm x D 220mm, 12L H 315mm x D 260mm (excluding threads)