Bidex 500 Service manual

INSTALLATION
INSTRUCTIONS

Fitting Instructions
The following items should be included in the box
1/ Heater unit
2/ 2 x flexible hose with isolation valves
3/ Facia grills with fixing screw pack
4 / instruction manual
Step 1 Location
Select a location in a cavity beneath a kitchen cupboard ensuring the area is clean
and level. Care should be taken not to store perishable goods in the cupboard directly
above the heater unit
Step 2 Central heating water supply
Supply should be through a 2 15mm pipe pumped central heating system
Step 3 Electrical supply
Warning: This application must be earthed
A fused (3amp) electrical spur with a switch should be fitted in an easily accessible
position. Do not locate the spur immediately above the heater
Note: Electrical installation must comply with local or national regulations
1

Step 4 Preparation
This product is normally fitted directly onto the floor. Once the position has been
decided, mark out and cut the plinth to the dimensions as shown below.
It is recommended that a gap of 20mm is left between the top of the plinth and the
shelf of the cupboard to ensure adequate airflow
A B
320 mm 100 mm
A= Width of cutout
B= Height of cutout
•Floor mounting
•Plinth mounting
Step 5 Water Connections
Fit the valve end of the flexible hoses to the Plinth Heater and the other ends to the
central heating flow and return pipe work. Note the direction of flow arrows on the valves
are not important in this application
Isolating
Valves
System
pipe work
2
Flexible
hoses

•Air vent screw
Step 6 System Venting
Fill the System and vent the air from the heat exchanger using the air vent screw. Close
the vent screw ensuring that there are no leaks.
Note: You may need to balance the central heating system if the plinth heater is installed on the same circuit
as panel radiators.
Step 7 Fitting
Ensuring that the flexible hoses do not kink and the electrical cable is not in contact with any
hot surfaces slide the plinth heater under the cupboard until the front edge is just behind the
line of the plinth.
Replace the plinth and pull the heater through the opening till the front edge projects 8mm
through the plinth.
8mm
3

A
Step 8 Fitting the Grill
Screw the Grill to the front of the Plinth Heater using the 2 shorter screws at point “A” Secure
the grill to the plinth using the longest screws at point “B”
B
Operation
Switch the unit on at the socket. Set the heating switch to the red disc position. Select the
fan speed to Low or Boost. The fan will start to rotate provided hot water is circulating
through the heat exchanger at or above 43degrees C. If the central heating system has just
been switched on there may be a delay in the fan starting till the system reaches 43degrees
C.
When the central heating system switches off and the system temperature drops below
43degrees C the fan will stop automatically.
During the summer the plinth heater can be used for air circulation without heat.
Set the heating switch to the Blue disc position. In this position the fan will run until the
unit is manually reset.
4
“I” Low
“0” Off
“II” Boost
“0” Winter switch
“1” Summer switch

Safety Notice
This appliance is not intended for use by persons (including children) with reduced
physical, sensory or mental capabilities, or lack of experience and knowledge,
unless they have been given supervision or instruction concerning use of the
appliance by a person responsible for their safety. Children should be supervised
to ensure that they do not play with the appliance.
Maintenance
Before any maintenance is carried out on the unit the electrical supply must be
isolated.
Maintenance should be restricted to dust and lint removal around the unit.
Do not tamper with any electrical parts
A installer should be used for other maintenance requirements.
Technical Data
Test Pressure: 20 bar
Maximum working pressure:10 bar
Electrical supply: 220-240 V –50 Hz.
Water connections: 15mm compression
5
Fault Finding
1. Fan does not run on any switch setting. a). Check the power supply is switched ON.
b). Check fuse in fused spur.
c). Check the wiring connections at the
fused spur.
2/ Heater does not switch on when a) Check switch is set to low or Boost
Central heating is on b) Check the unit is not air locked. Use
bleed valve in front of unit to release
any air
c) Balance the central heating system if
installed on same circuit as panel
radiators and increase the circulating
pump speed if required.
d) Increase the boiler temperature