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Assure FGHR
Combi
Domestic Hot
Water
Assure FGHR
Combi
Blending
Valve
Domestic Hot
Water
Assure FGHR
Expansion
Vessel
15 mm
Single
Check Valve
22 mm
System
3 bar
Boiler
Pressure
Reducer
Stop
Valve
Scale
Reducer
C.H. Flow &
(recommended if
Return
22 mm
water hardness level
> 200 ppm of calcium
22 mm
carbonate)
Mains
Cold Water
Fig. 33
Expansion
Vessel
Mains
Cold Water
Single Check
Valve
Combi Boiler Application
Fig. 31
(schematic diagram)
Expansion
Vessel
Mains
Cold Water
Single Check
Valve
Combi Boiler Application
incorporating Blending Valve
Fig. 32
(schematic diagram)
15 mm
A
Temp./Pressure
Relief Valve
Expansion
Vessel
22 mm
Tundish
Pressure
Relief Valve
Discharge
Pipe
System Boiler Application
(schematic diagram)
1. Certain circumstances require the installation of an
expansion vessel on the mains inlet - see the relevant
section of the boiler Installation & Servicing Instructions.
2. System boilers - Ensure that the components of the
System Boiler Application kit (7736697 - includes a swept
tee) are fitted in accordance with Fig. 33.
1. Apply the SAP label to the boiler (Fig. 34) and continue
with the installation and commissioning procedure.
2. The Assure FGHR will operate at full effectiveness after
approximately 24 hours operation.
1. There are no specific maintenance requirements
applicable to the Assure FGHR.
2. It is recommended that every time the boiler is serviced
the Assure FGHR is subjected to a visual inspection of its
overall condition and that of the flue & pipework
connections.
Domestic Hot
Unvented
Cylinder
Domestic
Hot
Water
Primary
B
15 mm
Single
Check Valve
22-22-15
Swept Tee
From
to
A
B
(note direction
outlet to cylinder) pipe
of sweep)
should be insulated and
kept as short as possible
5.0 Completion
5.1
Pipework (Figs. 31, 32 & 33)
NOTE: To comply with water regulations & byelaws an
approved single check valve or some other no less
effective backflow prevention device must be fitted at the
point of connection between the supply and the device.
SYSTEM BOILER APPLICATIONS. It is recommended
that the cylinder thermostat is set to 60 °C and that the
main heat source is enabled for at least one continuous
hour per week for pasteurisation.
5.2
Label
5.3
Inspection
Water
Apply SAP Label
(GasSaver
Fig. 34
11
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