Commissioning And Testing; Initial Lighting - IDEAL imax W45 Installation And Servicing Manual

51 COMMISSIONING AND TESTING

A. ELECTRICAL INSTALLATION
1. Checks to ensure electrical safety should be carried out
by a competent person.
2. ALWAYS carry out the preliminary electrical system
checks, i.e. earth continuity, polarity, resistance to earth
and short circuit, using a suitable meter.
WARNING. Whilst effecting the required gas soundness test and purging air from the gas
installation, open all windows and doors, extinguish naked lights and DO NOT SMOKE.

52 INITIAL LIGHTING

1. Check that the system has been filled and the boiler is not
air locked - air in the boiler could damage the heat
exchanger. For this reason the airvent located in the left top
side must never be shut off.
2. Check that all the drain cocks are closed and any valves in
the flow and return are open.
3. Check that the GAS SERVICE COCK IS ON.
4. Fill the condensate trap with water before putting the unit
into operation (see Frame 66 for condensate trap removal).
5. Check the indication on the pressure gauge. If the
pressure is less than 1 bar the installation should be filled
up first (sealed system only).
6. Switch the electricity supply ON and check that all the
external controls are calling for heat. Check burner switch
is set to on.
7. The boiler will commence the ignition sequence. If after 5
attempts the boiler has failed to light then it will lock out.
Press the reset button to restart the ignition sequence.
Gas Rate
8. Operate the boiler for 20 minutes and check the gas rate (Table
1). You should be able to read at least 90% of the nominal.
53 GENERAL CHECKS
Make the following checks for correct operation.
1. The correct operation of ANY secondary system controls
should be proved. Operate each control separately and
check that the main burner or circulating pump, as the case
may be, responds.
2. Water circulation system;
a. With the system HOT examine all water connections for
soundness.
b. With the system still HOT, turn off the gas, water and
electricity supplies to the boiler and drain down to
54 HANDING OVER
ROUTINE OPERATION
Full instructions covering routine lighting and operation of the
boiler are given on the Lighting and Operation Instruction Label
located on the inside of the lower controls door.
Draw the attention of the boiler owner or his representative to the
Lighting and Operating Instruction Label. Give a practical
demonstration of the lighting and shutting down of the boiler.
Describe the function of the boiler and system controls and show
how they are adjusted and used.
Hand these Installation and Servicing Instructions, User's
Instructions and Log book to the customer and request him to
keep them in a safe place for ready reference. For IE, it is
38
INSTALLATION
B. GAS INSTALLATION
1. The whole of the gas installation, including the meter,
should be inspected and tested for soundness and then
purged in accordance with the recommendations of the
relevant standards listed on page 4.
In IE refer to I.S.813:2002.
9. To ensure the boiler operates at maximum rate without
modulating set the fan speed to maximum.
10. To set the fan speed to maximum. Press and hold in the
'mode' and '+' buttons simultaneously. The display will
show
H
operating at maximum rate.
11. To ensure the boiler operates at minimum rate without
modulating, set the fan speed to minimum
12. To set the fan speed to minimum. Press and hold in the
'mode' and '-' buttons simultaneously. The display will
show
L
operating at minimum rate.
13. Press the 'reset' button to return to normal operating mode.
Note.
It is possible to switch off the CH/DHW systems if the mode
and +/- buttons are not held simultaneously. Refer to Frame 35
under the heading CH/DHW Systems for guidance.
complete the flushing process.
c. Refill and vent the system, clear all air locks and again
check for water soundness.
d. Balance the system.
3. Check the condensate drain for leaks and check it is
discharging correctly.
4. Finally set the controls to the User's requirements.
Note. If an optional programmer kit is fitted then refer to the
instructions supplied with the kit.
necessary to complete a "Declaration of Conformity" to indicate
compliance to the appropriate standard.
IMPORTANT. Point out to the owner that the boiler must have
regular maintenance and cleaning, at least annually, in order to
ensure reliable and efficient operation. Regular attention will
also prolong the life of the boiler and should preferably be
performed at the end of the heating season.
After servicing, complete the service section of the log book and
return to the owner or their representative.
Recommend that a contract for this work should be made with
the regional gas authority or a CORGI registered heating
installer. In IE servicing work must be carried out by a
competent person.
as the first digit indicating the boiler is
as the first digit indicating the boiler is
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Installation & Servicing