Supplied By www.heating spares.co Tel. 0161 620 6677
18
COMMISSIONING & TESTING
5
5.1
OPEN VENTED WATER SYSTEMS
a)
Fill and flush the system with all valves open. Refill the system
and check for water leakage. Vent the system including
radiators and make sure the pump isolating valves, the
bypass and motorised valves (if fitted) are fully open.
b)
Turn on gas and check for gas soundness around boiler
components using leak detection fluid. DO NOT USE A
NAKED FLAME.
c)
Remove the outlet pressure test screw and fit pressure test
gauge (see Figure 29).
d)
Ensure that all secondary controls (timer, room thermostat and
cylinder thermostat where fitted) are turned to maximum.
29
MULTI FUNCTIONAL
GAS CONTROL VALVE
e)
Turn on the electrical supply and check the pump is working
and is circulating water through the system.
f)
Turn the boiler thermostat fully clockwise to its maximum
setting. After a few seconds the boiler will light. The burner
flame can be viewed through the viewing glass in the front of
the sealed case.
g)
If the boiler fails to light, and the ignition reset neon
illuminates, wait 15 seconds and reset the ignition by
depressing the reset button once. (Fig 24)
h)
Allow the boiler to operate for 10 minutes
i)
Check the burner pressure is in accordance with the data in
section 2.1. If this does not comply, check that the dynamic
inlet pressure is 37mb. Adjust the inlet govenor on the gas
supply if necessary.
j)
Turn off the boiler and remove the pressure test gauge and
refit the pressure test screw. Check for gas soundness with
leak detection fluid.
k)
Refit the painted right hand inner case using the two screws,
then fit the control knob.
l)
Make sure all secondary controls (e.g. timer, thermostat, etc.)
do control the boiler correctly.
m)
Balance the system and adjust the pump to give the required
flow rate. Refer to section 2.3.
n)
The boiler and system should now be allowed to reach its
maximum working temperature and examined for water leaks.
o)
Turn off the heating system and drain whilst still hot.
p)
Refill, and vent ensuring all air is cleared from the system.
q)
Turn the boiler thermostat and all external controls to the
required setting and refit the front case.
NOTE: The Control System incorporates an Anti-cycle
device of 3 minutes.
5.2
SEALED WATER SYSTEMS
a)
Perform the operations as in Section 5.1.(a) to 5.1.(n), then
proceed as following.
b)
Turn OFF the heating system.
c)
Remove the pump and flush the system. Replace the pump
and fill the system until the pressure gauge reads 1.5bar.
d)
Check the operation of the safety valve which should be set
within 0.3 bar of the maximum preset system pressure.
e)
Charge the water system to the initial design pressure, light
the boiler and allow to run to maximum working temperature.
Turn off boiler. Check for leaks and drain system whilst still
hot.
f)
Refill and vent system. Adjust to initial design pressure and
set any pointer on the pressure gauge to coincide with design
pressure. Check for leaks.
5.3
USER INSTRUCTIONS
Hand the users instructions to the user for retention and instruct in
the efficient and safe operation of the boiler and heating/hot
water system. Advise the user of the precautions necessary to
prevent damage to the heating/hot water system and the building
in the event of the system remaining inoperative during frost
conditions.
Finally advise the user that for continued efficient and safe
operation of the boiler it is important that adequate servicing is
carried out at intervals recommended.
CHECKS TO ENSURE ELECTRICAL SAFETY SHOULD BE
CARRIED OUT BY A COMPETENT PERSON. DO NOT USE
THE BOILER WITHOUT THE SEALED INNER CASING BEING
FITTED CORRECTLY.
OUTLET PRESSURE
TEST SCREW
(BURNER)
INLET PRESSURE
TEST SCREW
(SUPPLY)
GAS COCK
SHOWN IN
THE
ON
POSITION
SLOT HORIZONTAL
FOR
OFF
GOVENOR
TO ADJUST BURNER
PRESSURE, REMOVE
CAP TO ADJUST
SCREW INWARDS TO
INCREASE BURNER
PRESSURE (CLOCKWISE)
