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4 Installation
A suitable position for the discharge point is ideally below
a fixed grating and above the water seal in a trapped gully.
Downward discharges at low level, i.e. up to 100 mm above
external surfaces such as car parks, hard standings, grassed
areas, etc. are acceptable providing that where children may
play or otherwise come into contact with discharges a wire
cage or similar guard is positioned to prevent contact, whilst
maintaining visibility.
Do not fit any valves or taps to the discharge pipework.
Ensure the pipework has at least 1:200 fall continuously from
the tundish to the discharge point.
The discharge pipe from the pressure relief valve of the boiler
may be tee'd into the discharge pipework from the Glow-worm
downstream of the tundish in the horizontal pipework.
4.5 High Level Termination
Providing that the point of termination is such that persons
in or around the building will not be endangered should
discharge take place, the method of termination shown in
diagram 4.2 is satisfactory.
Examples of points to consider when deciding whether a
location for the high level discharge is suitable are:
1.
The possibility, taking into account wind effect, that
someone may be in the path of the water being discharged
and if so, whether the temperature of the discharge water will
have been sufficiently reduced to not be dangerous. Thermal
conductivity of the structure’s surface, climatic conditions and
location and orientation of the discharge pipe may or may not
have an effect on reducing the temperature of the discharge
water.
2.
The location of windows and similar openings.
3.
The likelihood of a pram being left beneath the point of
discharge.
4.
The ability of the structures surface to withstand near
boiling water.
5.
The possibility of ice formation if water is discharged onto
pedestrian walkways.
a
b
c
d
e
f
g
SS 115
938
969
421
351
281
556
728
SS 150
1148
1179
454
384
314
589
903
SS 175
1308
1339
454
384
314
589
1038
SS 200
1468
1499
454
384
314
589
1118
SS 250
1758
1789
454
384
314
589
1408
SS 300
2078
2109
454
384
314
589
1648
12552
Diagram 4.3
10
Содержание SS 115
Страница 11: ...4 Installation FUNCTIONAL DIAGRAM 12553 FUNCTIONAL DIAGRAM 12554 Diagram 4 4 Diagram 4 5 11 ...
Страница 16: ...12560 Diagram 7 1 FAULT A 7 Fault Finding 16 ...
Страница 17: ...12561 Diagram 7 2 FAULT B 7 Fault Finding 17 ...
Страница 18: ...7 Fault Finding 12564 FAULT C Diagram 7 3 18 ...
Страница 19: ...7 Fault Finding 12562 FAULT D Diagram 7 4 19 ...
Страница 20: ...20 ...
Страница 21: ...21 ...
Страница 22: ...COMMISSIONING CHECKLIST MAINS PRESSURE HOT WATER STORAGE SYSTEM ...