BENSON GUHA, User Instructions

2.6 Electrical Installation 

 
All electrical wiring and connections must be 
in accordance with the relevant European, 
National, and Local regulations as well as to 
IEE Standards.  

Warning  

Ensure that the Electric and gas supplies are 
turned off before any electrical work is 
carried out on the heater. Also ensure that 
wiring cannot make contact with any metal 
surfaces liable to be subject to high 
temperatures, and where insulation of the 
wiring could be impaired as a result of such 
contact.   
All GUH models must be earthed. 

Caution 

The main electrical supply must not be 
switched off or disconnected as a method for 
stopping the heater, the exception to this is in 
the event of an emergency, or when the 
heater has been allowed to cool sufficiently 
to prevent any damage from being sustained 
to the heater or its controls (ie: during 
servicing).  
Claims for damage will not be considered if 
they have resulted from incorrect wiring or 
the incorrect use of the heater 
Each heater requires a permanent 230V 
50Hz 1ph electrical supply, which must be 
wired through a fused isolator fitted with a 
fuse of the correct rating (see section 7.1). 
The correct supply connection points for the 
live, neutral, and earth are clearly indicated 
on the wiring diagram mounted inside the 
wiring box cover. 
Wiring diagrams are also detailed within this 
manual, (section 6.0 ) 
The electrical supply isolator should be 
mounted adjacent to the air heater in an 
easily accessible position to allow for 
servicing isolation, or emergency shut off. 

2.7 Electrical panel

Warning 

Ensure that the mains isolator is turned OFF 
before undertaking any electrical on the 
heater. 

Access to the electrical panel is gained by 
removing the right hand heater side panel, 
(Lift the panel clear of the lower lip, pull panel 
outwards and let it slide until it is retained by 
the two lugs and the lower lip. 
The panel can be fully removed by tilting one 

of the top corners towards the heater thereby 
disengaging the lugs).   
The cover to the electrical panel can be 
removed by undoing the two screws which 
secure it to the panel.  
 

Warning 

Ensure that all connections are secure and 
that there are no loose strands which could 
bridge across the terminals. 
A minimum conductor size of 1.0 mm 
(diameter) is required.  

Caution 

One electrical 

panel per heater 

is required, 

unless heaters 

are specified for 

multiple heater 

control 

applications. On 

no account 

should more 

than one heater 

be connected to 

a single time 

switch or 

thermostat. The