Supplied By www.heating spares.co Tel. 0161 620 6677
5.4
DOMESTIC HOT WATER FLOWRATE
5.5
FINAL CHECKS
32
FITTING THE CASING PANELS
5.6
IGNITION LOCKOUT
5.7
OVERHEAT THERMOSTAT
5.8
FROST PROTECTION
5.9
OTHER FEATURES
5.10
USERS INSTRUCTIONS
DHW flow rate is low. If modulation is suspected, open all
DHW taps to maximise flow and re-check burner pressure)
If it is necessary to adjust the DHW burner pressure the
method is described in section 9.6 Gas valve replacement.
e)
Close the DHW tap and ensure that the ‘burner on’ neon
(Fig. 31) goes off, the burner goes out, and the pump stops
after an overrun period.
f)
Ensure that the room thermostat (if fitted) is calling for heat.
Turn the heating control knob (Fig. 31) to maximum (fully
clockwise), then turn the clock override switch (Fig. 31) to
the
I
position. The burner will light.
NOTE:
that the central heating burner pressure is factory set and is not adjustable.
g)
Set the clock to the desired times by setting the tabs.
h)
Slide the clock override switch to the ‘timed’ (Auto) position and
check the operation of the clock and room thermostat (If fitted).
A flow regulator is supplied factory fitted to the appliance to ensure
that no adjustment is necessary. Should the mains flow rate be below
the minimum required it is possible to remove the flow regulator
from the appliance as instructed in section 9 (Fig. 38).
a)
Turn the appliance off and remove the manometer and
tighten the burner pressure test point screw. Re-light burner
and test for gas soundness.
b)
Fit the boiler casing as described and illustrated in Figure 32:
Fit each side panel (both are identical) with two screws at the
top and bottom of each panel. Fit the upper front panel in
position and locate by gently sliding it downwards over the
supporting tabs. Screw into position using the single fixing
screw at the top of the casing. Fit the lower front panel by
placing in a horizontal position, pushing it towards the boiler
ensuring that the locating pins are engaged, then rotating it
upwards - fit badge to front of casing.
c)
Set the heating and hot water controls (Fig. 31) to the required
settings. Ensure that the clock override switch is in the timed
position, and check that the time clock is set at the desired time
periods. Set the room thermostat (if fitted) to the required setting.
In the event of an ignition failure, the safety lockout LED will flash.
Turn off the electrical power supply to the appliance (or remove
the demand for heat - either CH or DHW), wait 10 seconds, and
restore the power supply (or demand for heat).
a)
This appliance is fitted with an overheat thermostat. In the event
of overheating, the appliance will shut down and the safety
lockout LED will light continuously. If an overheat condition occurs
allow the appliance to cool, then press the overheat reset button
once (located underneath the appliance at the left hand side).
a)
This appliance is fitted with a frost protection device. In the
event of very cold conditions (when the internal pipework
temperature falls below 5°C) the boiler will light for a few
minutes to protect the appliance and system from potential
frost damage.
The following additional features are included in the appliance
specification:
ANTI-CYCLE DEVICE
When the appliance cycles on it’s central heating control setting a
slow cycle device operates. This allows the water to heat up slowly
thus preventing rapid cycling of the burners.
ANTI PUMP SEIZURE DEVICE
Providing that a power supply is maintained, The pump will
operate for at least 20 seconds every 23 hours (regardless of heat
demand) to prevent pump seizure during periods where the
appliance is not used.
WATER FLOW SWITCH
This device prevents the burner from igniting if there is inadequate
water flow through the main heat exchanger.
Upon completion of commissioning and testing the system, the
installer should draw the user’s attention to the following.
a)
Give the ‘Users Instructions’ to the householder and
emphasise their responsibilities under the ‘Gas Safety
(Installation and Use) Regulations 1994’ (as amended).
b)
Explain and demonstrate the lighting and shutdown procedures.
c)
Advise the householder on the efficient use of the system,
including the use and adjustment of all system controls for
both DHW and CH.
d)
Advise the user of the precautions necessary to prevent
damage to the system, and to the building, in the event of the
system remaining inoperative during frost conditions.
e)
Explain the function of the boiler overheat thermostat, and
how to re-set it. Emphasise that if cut-out persists, the boiler
should be turned off and the installer or service engineer
consulted.
f)
Stress the importance of an annual service by a registered
heating engineer.
g)
The electrical mains supply to the appliance must remain on
for the frost protection circuit to operate.
•
FIT
BADGE
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