Technical data

BS EN 60204 - Part 1 : 1993
Safety of Machinery - Electrical Equipment
for Machines Specification for General
Requirements
BS EN 60335 - Part 1 : 1988
Safety of Household and Similar Electrical
Appliances General Requirements
BS EN 55014 - 1993
Limits and methods of measurement of radio
disturbance characteristics of electrical
motor-operated and thermal appliances for
household and similar purposes, electrical
tools and similar electric apparatus
BS EN 50165 - 1997
Electrical Equipment of non-electric heating
appliances for household and similar
purposes, safety requirements
The Benson Variante range of gas unit
heaters meet with the governments criteria in
respect of the Enhanced Capital Allowance
Scheme
1.1 Certificates of conformity
Declarations and Certificates are available
upon request from the Quality Control
Department at Benson Heating .
Notified Body PIN Reference is
063BQ5461
1.2 General product information
The Benson Variante range includes for 10
model sizes with outputs from 12.0 kW to
144.0 kW,
Each model can be configured for use as
axial fan crossflow (VRA) centrifugal fan
(VRC) and axial fan downflow (VRE)
Variante heaters are suitable for operation on
natural gas (G20) or LPG (Propane (G31)
The Model Range is made up as follows
Variante heaters have been approved for
alternative flue discharge arrangements
These are detailed in following page’s
Cabinet
Manufactured from electro-zinc coated steel,
finished in a durable stove enamelled
polyester powder paint.
Heat Exchanger
Manufactured from aluminised dimpled steel
tube formed into a W shape to give
enhanced efficiency .
Flue / Combustion Air Spigot
Each heater is fitted with two spigots both of
which are located to the rear of the appliance
One of the pair is for connection for the flue
whilst the other is a screened combustion air
intake
WARNING
(SEE FLUE INSTALLATION 2.5 PAGE 14)
Burner
The induced draught multi in-shot burner
assembly is manufactured from aluzinc
coated steel and mounted to a common steel
manifold which can be easily withdrawn
through the burner access compartment.
Burner Control
The heaters are fitted with automatic ignition
for all models within the range.
Exhaust Fan
Combustion gases are evacuated to
atmosphere via an in built power flue venter
fan which is safety interlocked to the gas
valve via an air pressure proving device
Air Movement Fan
VRA / E) are supplied with an Axial fan for
free blowing applications .
Variante (C) are supplied with Centrifugal
fans suitable for ducted applications
Note
Neither asbestos nor soft soldered joints are
used in the construction or manufacture of
the Benson VRA/C/E range of Heaters.
The materials selected for use can withstand
the mechanical, chemical, and thermal
stresses which they will be subject to during
foreseen normal use when installed in
accordance with the manufacturers
recommendations.
Model No 40 70 100 135 170
Output kW
12 19.6 29.4 39.2 49.0
Model No 200 250 330 410 490
Output kW
58.8 72.0 96.0 120.0 144.0