33
Harrier GTS -
Installation & Servicing
INSTALLATION
52 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.
B. FOR 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.
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.
53 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.
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.
Unscrew the safety thermostat (overheat) reset button cap
(7) and press the reset button.
5.
Set the boiler thermostats (3) to maximum.
6.
Switch the electricity supply ON and check that all the
external controls are calling for heat. Set the main boiler
switch (1) to ON ( ).
7.
The burner will commence the ignition sequence. If the
burner has failed to light then it will lock out. Press the reset
button to restart the ignition sequence.
8.
Operate the boiler for 20 minutes and for gas fired boilers
check the gas rate (Table 1).
9.
Refer to the burner instructions for specific operating
features.
10.
Set the boiler thermostats (3) to the appropriate settings
ensuring the second stage is 5
o
C lower than the first stage if
a 2 stage burner is fitted.
54 GENERAL CHECKS
Make the following checks for correct operation.
1.
The correct operations 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 or oil burner,
water and electricity supplies to the boiler and drain
down to 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.
Finally set the controls to the User's requirements.
Note.
We advise never to set the boiler thermostat below position
4
(approx. 40
o
C) in order to avoid the risk of combustion products
condensing on the walls of the boiler.
55 HANDING OVER
ROUTINE OPERATION
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.
IMPORTANT.
Point out 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.
Recommend that a contract for this work should be made
with the regional gas authority or a CORGI registered heating
installer for gas fired boilers.
INST
ALLA
TION
