Boiler Design; Safety Devices - Glow-worm Ultrapower sxi Series Installation And Servicing

Boiler Design

This boiler is designed as a high efficiency central heating
appliance, close coupled to an un-vented cylinder. The
pumps, expansion vessels and associated safety devices are
all fitted within the appliance, providing a one box solution
for properties requiring a high domestic hot water demand.
The intelligent control system is designed for both simple
operation and maximum control.
the boiler will operate automatically.
Additionally a thermostatically controlled immersion heater
with manual reset is fitted to the cylinder as a back up
for domestic hot water in the event of the boiler being
inoperable. It is intended for use as a back up should the
boiler fail, it will not give optimum DHW performance.
Electrical Supply Failure
The boiler will not work without an electrical supply.
Normal operation of the boiler should resume when the
electrical supply is restored.
Reset any external controls, to resume normal operation of
the central heating.
If the boiler does not resume normal operation press the
reset button. If the boiler does not resume normal operation
after this, refer to fault finding.
Overheating Safety
In the event of the boiler overheating the safety devices
will cause a safety shutdown. A "Reset" may be required
if a fault code ('F' followed by a number) appears on the
digital display, refer to 'F' codes, section 14 Fault Finding. A
manual reset button is also provided on the thermostat in the
immersion heater.
Safety Discharge Valves
Three safety discharge valves and discharge pipes are fitted
to the boiler, two PRV's and one pressure/temperature relief
valve. The valves must not be touched.
Should there be any discharge from the pipes, isolate the
boiler electrical supply and call your installer or Glow-worm's
own service organisation using the telephone number on the
inside front cover of this booklet.
Servicing, Maintenance
Servicing and Maintenance
To ensure the continued efficient and safe operation of this
boiler, it is recommended that it is checked and serviced as
necessary at regular intervals. The frequency of servicing will
depend upon the particular installation conditions and usage.
If this boiler is installed in a rented property there is a duty
of care imposed on the owner of the property by the current
issue of the Gas Safety (Installation and Use) Regulations,
Section 35.
Servicing/maintenance should be carried out by a competent
person in accordance with the rules in force in the countries
of destination.
"Benchmark" scheme
Glow-worm support the Benchmark initiative. It is very
important that the service record is completed by the
installation engineer and handed over to the user.
Boiler
Once the controls are set

Safety Devices

Design
Pluming from flue terminal
Like all condensing boilers this appliance will produce a
plume of condensation from the flue terminal in cool weather.
This is due to the high efficiency and hence low flue gas
temperature of the boiler. This is normal and not an indication
of a fault.
Condensate Drain
A plastic drain pipe must be fitted to allow discharge of
condensate to a drain.
Condensate should, if possible, be discharged into the
internal household draining system. If this is not practical,
discharge can be made externally into the household
drainage system or a purpose designed soak away, see
section 6 for more details.
Frost protection
The appliance has a built in frost protection device that
protects the boiler from freezing. With the gas and electric
supplies ON and irrespective of any room thermostat setting,
the frost protection device will operate the pump when the
temperature of the boiler water falls below 8
After 10 minutes the pump will be stopped if the temperature
is higher than 10 C or has already reached 35
O
The burner will activate if the boiler temperature does not
reach 10 C after 30 minutes or at any time if the temperature
O
drops to 5 C.
O
The burner will switch off when the temperature reaches
35 C.
O
Frost protection is also built into the cylinder.
Should the cylinder temperature fall below 10
re-heated to a temperature of 15
The cylinder has a built in disinfection cycle which raises the
water temperature to 70
2:00am.
Condensate Drain Blockage
As a safety feature the boiler
condensate drain becomes blocked. During freezing
conditions this may be due to the forming of ice in the
condense drain external to the house. Release an ice
blockage by the use of warm cloths on the pipe, the boiler
should then restart.
and Spare Parts
Spare Parts
Remember, when replacing a part on this appliance, use only
spare parts that you can be assured conform to the safety
and performance specification that we require. Do not use
reconditioned or copy parts that have not been clearly
authorised by Glow-worm.
If a part is required contact Glow-worm's own service
organisation.
Please quote the name and model of the boiler.
The name badge is on the front of the appliance and the model
type is positioned on the top edge of the tank module front
panel.
If in doubt seek advice from the local gas company or Glow-
worm's own service organisation using the telephone number
on the inside front cover of this booklet.
6
C.
O
C.
O
C, the tank is
O
C.
O
C for 1 hour every Wednesday at
O
will stop working if the