page no. 51 of 68
LX Range Users, Installation & Servicing Instructions Doc Ref M110 issue 1.0 Dec 2020.
Gas Safety (Installation & Use) (Amendment)
Regulations
It is law that all gas appliances are installed,
adjusted and, if necessary, certed by
qualified persons* in accordance with the
current issue of the above regulations.
Failure to install appliances correctly can lead to
prosecution. It is in your own interests and that of safety
to ensure that the law is complied with.
* Gas Safe Registered Engineer
All Powrmatic heaters have been fired, preset and fully
tested to stringent approved test procedures prior to
dispatch.
NOTE: If a suspended air heater is to be
serviced do not lean ladders against the
heater. Ensure that an access tower or
equivalent is used.
NOTE: The access door to the controls section
may be removed to improve access.
Open the door to 90°, remove the earth cable
at the bottom, and then lift the door vertically
upwards to disengage the hinge plates. Refit in reverse
order. Ensure that the earth cable is refitted.
2.6.1. Electrical Installation
Checks to ensure electrical safety must be carried out by
a qualified person and must include.
i) Ensure that a two pole electrical isolator having a
minimum separation between pole of 3.0mm is fitted
adjacent to the module.
ii) That the correct value fuse and cable size has been
used.
iii) That the module is correctly earthed.
iv) That polarity at the module is correct.
v) That connections to the module are as per the wiring
diagram.
vi) That the main air fan is interlocked with the module so
that the module will not function if there is no air flow.
vii) That installation wiring has not been routed adjacent
to components that will become hot when the module is
working. e.g. burners, exhaust header box.
2.6.2. Gas Installation
For new installations, the whole of the gas installation,
including the meter, should be inspected and tested
for tightness and purged in accordance with the
recommendations of IGE/UP/1 (Edition 2) or IGE/UP/2A
as appropriate.
NOTE: On initial lighting of the heater(s), it may
take some time to purge the internal pipe work
of air.
2.6.3. Air Distribution System
The system should be checked to ensure that the
installation work has been carried out in accordance with
the design requirements.
Particular attention should be given to the correct
arrangement of delivery ducts and registers, return air
ducts and grills and general adequacy of return air paths.
Ensure that any fitted duct work is balanced so that the
specified motor running currents are achieved.
(See section 1.2)
2.6.4. Checks before Operating the Air
Heater
The following preliminary checks should be made before
lighting the heater(s)
a) Ensure that the ELECTRICAL supply to the heater is
switched OFF.
b) Check that all warm air delivery outlets are open.
c) Check that all external controls are calling for heat.
d) Check that all controls/BMS are calling for heat.
1. Ensure that the gas service valve is closed. Switch
on the electrical supply at the isolator and the ignition
sequence will commence. After a delay of approximately
20-30 seconds the ignition spark will be generated and
the main gas valve energised.
2. If the LED on the front of the heater pulses amber,
the heater is in high limit. For LX15-70 units, the reset
is located next to the LED. For LX90-140 units, a single
pulse denotes a high limit of the stat closest to the burner.
The reset is located next to the LED. A dual pulse denotes
a high limit of the stat furthest away from the burner.
This reset is located at the opposing end of the heater to
the burner/controls. Unscrewing the cover cap exposes
the reset button which can then be depressed. The
LED indicator will go out and the ignition sequence will
commence. After a delay of approximately 20-30 seconds
the ignition spark will be generated and the main gas
valve energised.
3. The burners will fail to light as the gas service valve is
closed. The control box will attempt ignition a further five
times and then go to lockout and the lockout LED on the
R2R board will indicate a steady amber. To restart the
ignition sequence depress the reset switch.
2.6 Commissioning and Testing
To Next Page
Loading...
Need help?
General
