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KESTON qDUET RANGE
QUDOS 28s WITH qSPA WATER STORAGE
7 - 28KW, 120 - 210 LITRES – COMPLETE PREFABRICATED
SYSTEM
The Keston qDuet is a harmonised blend
of the Keston Qudos 28s modulating condensing boiler
and the Keston unvented qSpa water storage cylinder
with full controls.
Keeping in line with Keston's
unswerving commitment to cost-efficiency, innovation
and simplifying installation,
the company pioneered the ultimate domestic heating
system, the Keston qDuet. The appliance combines
the Keston Qudos 28s modulating condensing boiler,
the
unvented Keston qSpa water storage cylinder with
full controls in one compact ready-to-install unit,
all
contained in a pre-assembled, pre-plumbed and pre-wired
floor-standing rig. The invented qSpa water storage
cylinder in this rig is available in 120L, 150L
and 210L volumes. Due to the high quality stainless
steel
construction of the Keston qSpa, no cylinder anode
is required and the cylinder offers rapid heat
recovery with dramatic savings through reduced boiler
cycling.
SIMPLIFYING FOR THE INSTALLER
The Keston
qDuet has all the cost and energy-saving benefits
of condensing technology, combined with
speedy and uncomplicated installation.
PREFABRICATED
SYSTEMS – WHY?
In todays busy market the installation
time for heating systems is being constantly
squeezed. Whilst combination
boiler solutions such as our C36 Combi
provide an answer for smaller properties with less
hot
water
demand, houses with multiple bathrooms
need
water storage to meet their needs.
The qDuet
provides the answer whilst maintaining the ability
to deliver rapid installation
times and all
within an extremely compact space. The
units are pre-assembled at our factory
and fully
tested prior
to shipment. The qDuet is to a high equipment
specification and meets the demanding
Chess HR2 recommended
Best Practice system specification. Simply
locates, add
power and water and a room thermostat
of the customer choice.
In addition, for multiple
installations Keston is able to modify the design
to
provide a
bespoke solution to meet any customer needs.
This can
involve additional
equipment as well as alternative product combinations from the Keston
range – contact
Keston for more details.
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Related technical information
DATA
REFERENCE TABLE
Product Brochure
installation Manual
User Guide
FEATURES & BENEFITS
HEATING FEATURES
- Qudos 28s “A” rated
gas condensing system boiler
- System filling loop
- 8 litre heating expansion
vessel
- Automatic bypass valve
- 3-bar sealed system
safety valve
- 22mm 2-port heating valve
- Flow and return
isolation valves
HOT WATER FEATURES
- qSpa
stainless steel unvented hot water cylinder
- 22mm 2-port
hot water valve
- Potable water expansion
vessel
- Cylinder thermostat/overheat control
- 3kW
immersion heater
- CWS pressure reducing valve
set
- CWS expansion relief valve
- Potable discharge
tundish
ELECTRICAL FEATURES
- Wiring centre
- 2 channel programmer
- Switched fused spur
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