Figure E1.1 Typical Piping Layouts - Hamworthy F40V Installation, Commissioning And Operating Instructions

Figure E1.1 - Typical Piping Layouts
Expansion pipe
Float
Valve
valve
Mains water
Feed &
expansion
tank
Feed
pipe
VENTED SYSTEM: Single pipe header
Mains water
Automatic
Air Vent
Lockshield
valve
Lockshield
valve
Lockshield Temporary
valve
fill line
UNVENTED SYSTEM: Single pipe header
E 1.13 Minimum System Water Pressure
To comply with guidance note PM5 (Health and Safety Executive), the minimum pressure requirements at the boiler are
given below as examples:-
1) Single installed boiler running at 82°C flow temperature. Minimum head required is not less than 2.0 metres or 0.2 bar.
2) Single installed boiler running at 90°C flow temperature. Minimum head required = 3.0 metres or 0.30 bar.
3) Modular boiler installation running at 82°C flow temperature and 11°C rise across system.
Minimum head required = 4.4 metres or 0.43 bar.
4) Modular boiler installation running at 82°C flow temperature and 15°C rise across system.
Minimum head required = 6.5 metres or 0.64 bar.
Figure E1.4 Cold Feed and Vent Pipe Sizes
HAMWORTHY HEATING LTD
Drain
P
Safety
valve
Module Module Module
1 2 3
Hamworthy Modular Boilers
Drain
valve
Valve
Expansion
vessel
Drain
valve
Double
check
valve
Boiler Output
60 - 150kW
150 - 300 kW
300 - 600 kW
>601 KW
Pressure &
Temperature
gauges
T
Valve
Circulation pump
(System)
Valve
Pressure &
Temperature
Drain
gauges
Safety
valve
Module Module Module
1 2
Hamworthy Modular Boilers
Feed mm
25
32
38
50
53
FLEET V series
T
P
Valve
Circulation pump
(System)
3
Valve
Drain
valve
Vent mm
32
38
50
65
Automatic
Air Vent
Heating load
Automatic
Air Vent
Heating load
500001213/G