Technical data

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Energy saving high efficiency performance
Models for 11°C ∆t and 20°C ∆t systems
Robust cast iron heat exchanger
Simple design, reliable performance
Tolerant of older heating systems
Fully assembled for faster installation
Close control and accurate load matching
The Purewell VariHeat is the simple direct
replacement for cast iron atmospheric boilers,
with low emissions and durability built in as
standard. All models comfortably exceed the
minimum seasonal efficiency requirements for
the Building Regulations (Amendment 2006),
making the Purewell VariHeat the perfect
choice for existing buildings
and new buildings.
Occupying the same small space as its
predecessors, but with up to 50% more
output, the Purewell VariHeat is a high
efficiency boiler range that can suit
condensing or non condensing systems,
and is available in 5 condensing models with
outputs from 70kW to 180kW, and 4 non
condensing models, 65kW to 125kW.
Purewell VariHeat boilers feature a control
system that uses an LPB bus communication
system, which simplifies the controls
requirements. Clip-in modules integrate the
boiler and building control capabilities with
an extensive range of options which include
boiler sequencing for up to 12 boilers
in a multiple boiler installation.
Completing the Purewell VariHeat
package is a range of optional pipework
kits to simplify design and procurement.
The pipework kits are available for 2, 3 or 4
multiple boilers and are factory tested and
part assembled for ease of installation.
Purewell VariHeat is the fully compliant
direct replacement for cast iron
atmospheric boilers, with 50% more
output, matched system temperatures
and comprehensive controls capability.
B E N E F I T S
Purewell VariHeat high efficiency condensing boilers with a Dorchester DR-FC
condensing water heater.
Purewell VariHeat
High Efficiency, Condensing
& Non Condensing
Fully Modulating, Pre-mix
Modular Gas Fired Boilers
Options
Boiler sequencing
cascade controller
Room sensors
LPB bus communications
modules
Outside air sensor
Zone controller
DHW cylinder sensor kit
Pipework header kit