Table of Contents
Advertisement
12. Commissioning the Appliance
Ensure that no foreign matter is left in the system as this could
cause damage to the appliance.
Benchmark Water Treatment: For optimum performance after
installation, this boiler and its associated central heating
system should be flushed in accordance with the guidelines
given in BS7593:1992 - Treatment of water in domestic hot
water systems. Full instructions are supplied with proprietary
cleansers sold for this purpose. If an inhibitor is to be used
after flushing, it should be used in accordance with the
inhibitor manufacturers instructions.
Suitable flushing agents and inhibitors are available from Betz
Dearborn Tel: 0151 4209595 and Fernox Tel: 01799 550811.
Instructions for use are supplied with these products.
IMPORTANT: Any system cleanser must be flushed from the system
before an inhibitor is added.
12.1 Check that the electrical supply to the appliance is switched off.
12.2 When commissioning the appliance after initial installation
follow the procedure from 12.3, otherwise follow the procedure
from 12.4.
12.3 Prepare the heating system
1. After initial installation as previously described in Section 11,
drain down the system sufficiently to add a flushing agent.
After flushing drain the system before re-filling
2. Refill the system.
12.4 Prepair the boiler
1. Remove the burner as described in Section 5.1—5.5. On an RS
flue system, release the flexible duct by unscrewing the jubilee
clip.
NOTE: If the oil hose is to be disconnected, isolate the oil supply
at both the bulkhead isolating valve (see Fig. 2), and tank isolat-
ing valve.
2. Check the nozzle lies central to the combustion head hole.
3. Remove the sponge O-ring seal and combustion head, and
check the nozzle and electrode settings shown in Fig. 22.
4. Check for any visible defects.
5. Re-assemble the burner.
6. Check the position of the thermostat phials, by releasing the
split pin and carefully removing the thermostat phials. Re-install
the thermostat phials in the correct order as indicated in Fig. 2.
7. Install the burner.
8. Check the appliance is correctly wired as described in Section 10.
9. Turn the isolating valve fully clockwise to close the valve.
10. Fit a pressure gauge and manifold to the burner oil pump
port, indicated in Fig. 6.
11. Turn the isolating valve fully anti-clockwise to open the valve.
12. Turn on the electricity to the appliance.
13. Bleed the burner.
Single pipe system only
Release the fuel bleed port on the manifold and place a suitable
recepticle beneath. Turn on the boiler thermostat and allow the
burner to run through to lockout. Wait two minutes and reset
the remote lockout reset button positioned beneath the control
box assembly. Repeat the procedure at least three times or until
a steady stream of oil, without air, is exhausted from the bleed
port. Re-lock the bleed port.
Double pipe system
A double pipe system will automatically vent the air back to the
oil tank. Turn on the boiler thermostat and allow the burner to
run through to lockout. Wait two minutes and reset the remote
lockout reset button positioned beneath the control box assem-
bly. Repeat the procedure until the burner fires and runs in a
steady state. This may take several attempts depending on the
oil pipe length and height.
Single pipe suction lift system with de-aerator
A single pipe suction lift system with de-aerator will automati-
cally vent air through the de-aerator by turning on the boiler
thermostat and allowing the burner run to lockout. Wait two
minutes and reset the remote lockout reset button positioned
beneath the control box assembly. Repeat the procedure until
the burner fires and runs in a steady state.
On long oil pipe runs from the oil tank to the boiler it is recommend-
ed that the de-aerator be primed to prevent damage to the oil pump.
To prime the de-aerator follow the following procedure:
a) Disconnect the flexible oil inlet hose end nearest the
de-aerator and place in a container of oil.
b) Place an empty container to collect oil from the oil
inlet pipe connection from the de-aerator.
c) Prime the de-aerator and reconnect the de-aerator
to the flexible oil inlet hose.
12.5 Adjust the air shutter and pump pressure to the settings rec-
ommended in Table 2 and 3. After a pre-ignition period of approxi-
mately 15 seconds the burner should ignite. Flame sensing is car-
ried out by means of a photocell mounted in the burner body.
Should the boiler fail to establish a normal firing pattern (or should
flame failure occur during running), the absence of a flame is
sensed and the control box is monitored to a safe lockout condi-
tion and the boiler is shut down. The lockout indicator light in the
boiler fascia panel will permanently illuminate indicating that the
burner has gone to lockout. In this instance wait two minutes and
press the remote lockout reset button positioned beneath the con-
trol box assembly as shown in Fig. 2. Another start sequence is
then initiated. Repeat the procedure until a flame is established.
Note: Persistent lockout when running indicates a fault and a
Service Engineer should be consulted.
12.6 Run the boiler for approximately 3 minutes and switch off
checking that there is no after-spurting from the nozzle. This can
be detected by oil saturation on the combustion head. If after-
spurting occurs remove the burner from the boiler, unscrew the
nozzle, and while holding the burner in a vertical position, fill the
nozzle holder with oil. Refit the burner and continue to run the
boiler for three minute periods until after-spurting stops.
12.7 Run the boiler for a further 15 minute period and then
finally fine tune the air shutter setting to give the CO
specified in Table 2 and 3 less 0.5% CO
smoke will be emitted due to the burning of the organic binder
in the access door insulation board. Smoke readings will there-
fore be inaccurate at this point.
Note: A flue gas sampling point is located in the front of the flue
plate on the right-hand side.
12.8 Check that the smoke reading is in the range 0-1. If this
cannot be achieved then check that the burner combustion
head is set correctly and the nozzle is in good condition.
12.9 Check that the flue temperature does not exceed the value
specified in Table 2 and 3. If this is the case then check that the
baffles are correctly located as shown in Fig 23. If the baffles are
correctly located then reduce the pump pressure since nozzle
variations of up to + or – 15% may occur.
12.10 Turn off the electricity supply.
12.11 Turn the isolating valve fully clockwise to close the valve.
12.12 Remove the oil pressure gauge and manifold and check
all oil system joints for any signs of leakage.
12.13 Turn the isolating valve fully anti-clockwise to open the valve.
12.14 Turn on the electricity supply.
12.15 Allow the burner to run for a further five minutes and
then recheck the CO
level and adjust the air setting if required.
2
12.16 Replace the sample point plug.
12.17 Refit the cabinet front panel and control box assembly as
described in Section 5.1—5.4 in the reverse order.
12.18 When the heating circuit has reached full operating
temperature check the whole system for any leaks. This is
particularly important if the appliance is installed under a
'permenant' work surface as access later will be difficult.
21
level
2
. During this period some
2
Hide quick links:
Advertisement
Table of Contents
