Technical data

6
for Machines Specification for General
Requirements
BS EN 60335 - Part 1
Safety of Household and Similar Electrical
Appliances General Requirements
BS EN 55014
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
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.
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
- On/Off ONLY)
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 or top* of the
appliance. One of the pair is for connection
for the flue whilst the other is a screened
combustion air intake.
* specified at time of ordering.
WARNING
(SEE FLUE INSTALLATION 2.5)
Burner
The induced draught multi 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which can be easily withdrawn through the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
Model No 12 20 30 42 50
Output kW
12 19.6 29.4 39.2 49.0
Model No 60 72 95 120 145
Output kW
58.8 72.0 96.0 120.0 144.0