38
HANDING OVER
ROUTINE OPERATION
Draw the attention of the boiler owner or his representative
to the Lighting and Operating Instruction User Guide. 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
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 efcient 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 Gas Safe Registered Engineer.
In IE servicing work must be carried out by a competent person.
39
SAFETY
It is the law that any service work must be carried out by a Gas
Safe Registered Engineer. In IE service work must be carried
out by a competent person.
WARNING. Always turn off the gas supply at the gas
service cock, and switch off and disconnect the electricity
supply to the appliance and any external controls before
servicing or replacing components.
IMPORTANT. After completing the servicing or replacement
of components always:
• Test for gas soundness.
• Test the burner manifold anges for soundness. This can
be done with leak detection spray whilst operating the
boiler. The gas valve and controls must be shielded from
the spray.
• Check the water system is correctly lled and free of air.
Air in the boiler could cause damage to the heat exchanger.
For this reason if an automatic air vent is tted it must
never be shut off.
• Check the module cover is correctly tted.
• With the system hot examine all water connections for
soundness.
• Check the gas rate and measure the combustion CO/CO
2
content. Refer to Frame 34 for reference on how to force
the burner to maximum and minimum gas rates. The CO/
CO
2
ratio of the ue gas on each module should not be
greater than 0.004 ratio. The CO
2
values should be correct
to the gures in Table 1 on Page 2.
• Carry out functional checks as appropriate.
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
complete the ushing process.
c. Rell 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 optional kits are tted then refer to the instructions
supplied with the kits.
37
GENERAL CHECKS
INSTALLATION
34
- Installation & Servicing
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