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Stovax View High Output Boiler Stoves Manual

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Installation Instructions
10. Fully Pumped System
10.1 In many installations (especially new build) a fully pumped
system is the best choice to give increased control.
WARNING - To prevent the risk of boiling it is essential
to arrange the pipe work and position the hot water
cylinder and heat leak radiator so that gravity
circulation can take place when the pump is not
running. Any motorised valves fitted in this circuit must
return to the fully open position when the power is
interrupted.
11. Sealed (Pressurized) System
11.1 Do not fit this appliance to sealed or pressurised systems or
an unvented hot water cylinder.
12. Pipework Diagrams
12.1 See below for a typical layout of a pumped central heating
and gravity hot water circuit.
HEATING SYSTEM CONTROLS
CONTROLS GENERAL
1.1 The controls fitted to the system will provide two functions:
— To control the comfort level in the house.
— To maintain safety in the event of misuse or mechanical
failure.
COMFORT CONTROLS
1.2 This primarily consists of a time clock wired into the pump.
The pump is switched on when heat is required and when it
is not, the pump is switched off.
The time clock, when combined with a room thermostat and
or thermostatic radiator valves, enhances the comfort levels
in the house.
Some room thermostats combine the function with the
time clock and can be programmed to reduce the room
temperature rather than turning the system off. This is
effective in not allowing the rooms to become too cold and
speeding up recovery time.
1.3 The hot water cylinder can also be fitted with a thermostatic
valve which turns off the flow when the cylinder has reached
the desired temperature but the heat leak radiator will have
to be bigger to cope with the extra load when the tank is
isolated.
SAFETY CONTROLS
1.4 This primarily consists of a high limit thermostat fitted to
thegravityflowpipesetat80˚C,thisthermostatshould
be connected to the pump so that the pump is turned on if
thetemperatureexceeds80˚C.Thiswillpreventaccidental
boiling in the gravity circuit.
1.5 It is also recommended to fit a low limit thermostat on the
centralheatingreturnsetat45˚C,thisthermostatwillturnthe
pumpoffifthereturntemperaturefallsbelow45˚C.Thiswill
prevent corrosion and condensation within the appliance.
CONDENSATION
1.6 When filling the boiler with water for the first time, the cold
water entering the water jacket can cause condensation to
form on the surfaces of the appliance (inside and outside).
1.7 In certain conditions this condensation could result in a
considerable amount of water, in some cases enough to fill
the bottom of the appliance. This could be even worse if the
house has recently been re-decorated, wet plastered or any
other work has been undertaken which could result in high
humidity.
1.8 Precautions must be taken to ensure that this build up of
condensate does not overflow from the appliance onto any
surrounding fabric of the room e.g. carpets.
NOTE - THIS CONDENSATION IS NORMAL DURING
FILLING AND DOES NOT INDICATE A FAULTY OR
LEAKING APPLIANCE.
NORMAL RUNNING
1.9 During normal running this condensation should be minimal
if the system is fitted with the low limit thermostat as detailed
in 1.5. This low limit thermostat prevents the system pump
from running until the appliance has reached temperature.
SEASONAL USE
1.10 If this appliance is unused for lengthy periods of time it
should be periodically checked to ensure that condensation
is not building up within the appliance.
NOTE – THIS CONDENSATION IS NORMAL AND DOES
NOT INDICATE A FAULTY OR LEAKING APPLIANCE.
If the appliance is going to be unused for very long periods
of time it is recommended to drain the system.
NOTE – Further information on solid fuel central heating
systems can be found in the HETAS engineers training
manual.
LINK UP SYSTEMS
For information on how to link solid fuel boilers to other
heating appliances see Information For Dual System Link
Up Methods (PM286). This can be obtained through Stovax.
Call (01392) 474011, email info@stovax.com or visit
www.stovax.com for details.
Always seek the advice of a competent person* before
linking another heating system to a solid fuel boiler.
*Registered on the Competent Persons Scheme (GB
only) see page 39/ INFO (Republic of Ireland).
… 29 …


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