0503RHC8RJLGBEN
16/34
3.7 E
LECTRICAL SUPPLY
The electrical installation may only be carried out by
appropriately qualified persons observing the rules in force.
Check the electrical specification is in accordance with the
specification on the appliance data plate.
A unique appliance wiring diagram is supplied as a separate
document attached to this one plus an additional copy
attached to the air heater.
RHC 8000(M) RJL air heaters must be earthed.
The electrical controls are phase sensitive 230V 1N/50Hz.
The connections for neutral and line must be respected.
Ensure that when planning the controls circuitry, power will
be supplied at all time to the air heater, even when control is
switched in the
heat off
mode. This is necessary to ensure
that the air-circulating fan can operate independently of the
heating control.
Therefore, never incorporate automatic controls that
electrically isolate the appliance.
Ensure that electrical supply cables do not touch the
very hot combustion collector box.
The final connection must be made in the terminals
provided in the control compartment. Follow the wiring
diagram provided with the air heater or air handler.
Electrical supply cable conductor size should be 1.5 mm.
The length of conductors between the cord grip and the
terminals must be such that in the event that the cable
becomes taut the line conductors do so before the earth
conductor.
3.8 G
AS
C
ONNECTION
Attention : gas service connection Rc 3/4 for models
RHC 8000 RJL & Rc 5/4 for models RHC 8000M RJL
RHC 8000(M) RJL air heaters are designed to operate on
either natural gas (G20) or propane (G31) / butane (G30)
gas. Refer to the specifications in section 2 of this document
and to the data plate for details of supply pressures.
The gas meter and gas service must be checked by the
supply undertaking to ensure that they are adequate to deal
with the total load of all gas fired apparatus installed.
Connection to a gas service may only be carried out by
appropriately qualified persons. The gas installation must
comply with the rules in force using materials appropriate
for gas installations.
Check that the gas category is in accordance with the data
described on the air heater.
An adequate gas supply sized to provide the dynamic
pressure for the volume required for the air heater(s) is
essential to maintain the nominal heat input.
Account of other gas fired plant using the same gas service
must also be taken into account.
A 90° action, positive stopped gas service tap must be fitted
adjacent to the appliance, fitted in a manner to facilitate
appliance burner removal for service purposes, see figure 6.
Ensure that the gas service includes a filter and has been
tested and purged in accordance with prescribed practice
prior to commissioning and taking the appliance into
service.
As a rule, gas service pipes should not be routed through
air ducts. Should it be necessary to do so then pipe work
joints must not be made within the air duct.
Figure 9 : Detail of gas connection Rc 3/4 or Rc
5/4