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T E C H N I C A L A N D I N S T A L L A T I O N

Table G3 – Sizing of copper discharge pipe ‘D2’ for common temperature relief valve outlet sizes

Valve outlet size

Minimum size of

discharge pipe D1

Minimum size of

discharge pipe D2

from tundish

Maximum

resistance allowed,

expressed as a

length of straight

pipe (i.e. no elbows

or bends)

Resistance created

by each elbow or

bend.

G½

15mm

22mm
28mm
35mm

Up to 9m
Up to 8m

Up to 27m

0.8m
1.0m
1.4m

G¾

22mm

28mm
35mm
42mm

Up to 9m
Up to 8m

Up to 27m

1.0m
1.4m
1.7m

28mm

35mm
42mm
54mm

Up to 9m
Up to 8m

Up to 27m

1.4m
1.7m
2.3m

Worked example of discharge pipe sizing

Fig. 5, page 10: shows a G1/2 temperature relief valve with a discharge pipe (D2) having 4 No. elbows and
length of 7m from the tundish to the point of discharge.

600mm maximum

300mm minimum

temperature relief valve to tundish

Metal discharge pipe (D2) tundish with

continuous fall. See 3.56, Table G3 and
worked example

Tundish

Discharge below fixed

grating (3.61 gives
alternative points of
discharge)

Fixed grating

Trapped gulley

Содержание SLE Plus 210

Страница 1: ...SLE130 160 SLE 210 240 300 ADDITIONAL INSTALLATION INSTRUCTION FOR UK KITS IMPORTANT DO NOT UNDER ANY CIRCUMSTANCES SWITCH ON THE IMMERSION HEATER BEFORE THE PRIMARY TANK IS FILLED SLE 040113...

Страница 2: ...rk Dalgety Bay Fife KY11 9PF Scotland Further copies of instructions can be downloaded at www acv com Manufactured at ACV International Kerkplein 39 B 1601 Ruisbroek Belgium Telephone 0032 237 81235 e...

Страница 3: ...rsion Heater 6 4 System Schematics Typical un vented 7 Typical open vented 7 Proposed SLE diverted primary 8 Proposed SLE radiators and UFH 8 Typical S Plan electrical 9 Typical Y Plan electrical 10 5...

Страница 4: ...crushing damage to the domestic tank IMPORTANT ACV recommends the use of a corrosion inhibitor in the primary heating system The warranty will be invalidated if upon inspection it is found that a tan...

Страница 5: ...c water for use at the sanitary hot water outlets The exterior tank B is manufactured from STW 22 carbon steel this tank holds the primary heating fluid which is circulated from the boiler as the prim...

Страница 6: ...olyurethane foam 50mm thick Containing no CFC s having a GWP 0 00025 and ODP 0 Jacket The tank is covered in a co polymer polypropylene jacket this is a plastic material that offers a high resistance...

Страница 7: ...k plastic plug from Check Expansion valve and fit Expansion Vessel seal with PTFE tape 7 Connect Temperature and Pressure relief valve to 1 2 connection and orientate into position Do not run drain di...

Страница 8: ...ages 12 13 ACV recommends that the cylinder is electrically cross bonded to earth Primary system connections The primary flow and return connections to the tank should be made using the appropriate si...

Страница 9: ...roperty 4 Check for possible leakage before wiring 5 Wire the heater in accordance with the diagram below The heater should be wired through a double pole isolating switch or controller having contact...

Страница 10: ...T E C H N I C A L A N D I N S T A L L A T I O N 7 Typical open vented application Proposed SLE schematics...

Страница 11: ...d Primary Flow SLE Radiators and Under floor Typical S Plan schematic At high DHW demand or DHW charging Heat Pump can operate at elevated temperature 45 55 C and flow is diverted to top inlet During...

Страница 12: ...TIONS SUPPLIED WITH YOUR CONTROL PACKAGE EARTH CONNECTION IS NOT REQUIRED WITH MYSON ZONE VALVE FITTING INSTRUCTIONS INCLUDED WITH VALVE THIS DIAGRAM IS FOR GUIDANCE ONLY ACV ACCEPT NO LIABILITY FOR D...

Страница 13: ...TERMINAL NUMBERING MAY DIFFER FROM THOSE SHOWN ALWAYS WITH YOUR CONTROL PACKAGE EARTH CONNECTION IS NOT REQUIRED WITH MYSON ZONE VALVE FITTING INSTRUCTIONS INCLUDED WITH VALVE THIS DIAGRAM IS FOR GUI...

Страница 14: ...recommends the use of a corrosion inhibitor in the primary heating system The warranty will be invalidated if upon inspection it is found that a tank has failed due to corrosion caused by the lack of...

Страница 15: ...v Replace strainer and push cartridge into valve body take care when screwing the cartridge in not to damage the threads Do not over tighten vi Close hot tap and slowly open the cold water isolating v...

Страница 16: ...r connection 1 BSP 1 BSP Primary fluid connections 1 BSP 1 BSP Domestic water connections BSP BSP Dimension A mm 1024 1222 B mm 234 234 C mm 759 959 D mm 234 234 Mains kit will add approximately 500mm...

Страница 17: ...r 37 45 51 Immersion heater connection 1 BSP 1 BSP 1 BSP Primary fluid connections 1 BSP 1 BSP 1 BSP Domestic water connections BSP BSP BSP Dimension A mm 1493 1741 2046 B mm 1230 1477 1783 C mm 937 1...

Страница 18: ...EQUIREMENT there shall be precautions to ensure that the hot water discharged from safety devices is safely conveyed to where it is visible but will not cause danger to persons in or about the buildin...

Страница 19: ...levant part of BS 7291 3 58 The discharge pipe D2 should be at least one pipe size larger than the nominal outlet size of the safety device unless its total equivalent hydraulic resistance exceeds tha...

Страница 20: ...e below a fixed grating and above the water seal c downward discharges at low level i e up to 100mm above external surfaces such as car parks hard standings grassed areas etc are acceptable providing...

Страница 21: ...p to 27m 0 8m 1 0m 1 4m G 22mm 28mm 35mm 42mm Up to 9m Up to 8m Up to 27m 1 0m 1 4m 1 7m G1 28mm 35mm 42mm 54mm Up to 9m Up to 8m Up to 27m 1 4m 1 7m 2 3m Worked example of discharge pipe sizing Fig 5...

Страница 22: ...ength of 28mm pipe D2 from a G1 2 temperature relief valves equates to 18m Subtract the resistance of 4 No 28mm elbows at 1 0m each 4 0m Therefore the maximum permitted length equates to 14m As the ac...

Страница 23: ...T E C H N I C A L A N D I N S T A L L A T I O N 20...

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