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3.55  

Any discharge should be visible at the tundish. In addition, where discharges from 

safety devices may not be apparent, e.g. in dwellings occupied by people with impai-

red vision or mobility, consideration should be given to the installation of a suitable 

safety device to warn when discharge takes place, e.g. electronically operated.

Discharge pipe D2
3.56   The discharge pipe (D2) from the tundish should:

 

(a) have a vertical section of pipe at least 300mm long below the tundish before any 

elbows or bends in the pipework; and

 

(b) be installed with a continuous fall thereafter of at least 1 in 200.

3.57   The discharge pipe (D2) should be made of:

 

(a) metal; or

 

(b) other material that has been demonstrated to be capable of safely withstanding 

temperatures of the water discharged and is clearly and permanently marked to iden-

tify the product and performance standard (e.g. as specified in the relevant 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 that 

of a straight pipe 9m long, i.e. for discharge pipes between 9m and 18m the equivalent 

resistance length should be at least two sizes larger than the nominal outlet size of the 

safety device; between 18 and 27m at least 3 sizes larger, and so on; bends must be 

taken into account in calculating the flow resistance. See figure, table and the worked 

example.

3.59   Where a single common discharge pipe serves more than one system, it should be at 

least one pipe size larger than the largest individual discharge pipe (D2) to be connec-

ted.

3.60   The discharge pipe should not be connected to a soil discharge stack unless it can 

be demonstrated that that the soil discharge stack is capable of safely withstanding 

temperatures of the water discharged, in which case, it should:

 

(a) contain a mechanical seal, not incorporating a water trap, which allows water into 

the branch pipe without allowing foul air from the drain to be ventilated through the 

tundish;

 

(b) be a separate branch pipe with no sanitary appliances connected to it;

 

(c) if plastic pipes are used as branch pipes carrying discharge from a safety device 

they should be either polybutalene (PB) to Class S of BS 7291-2:2006 or cross linked 

polyethylene (PE-X) to Class S of BS 7291-3:2006; and (d) be continuously marked 

with a warning that no sanitary appliances should be connected to the pipe.

Note:

1.  Plastic pipes should be joined and assembled with fittings appropriate to the circums-

tances in which they are used as set out in BS EN ISO 1043-1.

2.  Where pipes cannot be connected to the stack it may be possible to route a dedicated 

pipe alongside or in close proximity to the discharge stack.

Termination of discharge pipe
3.61   The discharge pipe (D2) from the tundish should terminate in a safe place where there 

is no risk to persons in the vicinity of the discharge.

3.62   Examples of acceptable discharge arrangements are:

 

(b) to a trapped gully with the end of the pipe 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 that a wire 

UK

Smart SL : A1007846 - 661Y3100 • C

Technical Characteristics

13

EN

Содержание SL320

Страница 1: ...Smart SL 320 420 420 Duplex 600 Installation Operation Maintenance Instructions for the User and the Installer A1007846 661Y3100 C...

Страница 2: ...CTERISTICS 8 Dimensions and Main Characteristics 8 Electrical Characteristics 10 Performance 11 G3 Requirements and Guidance UK only 12 INSTALLATION 16 Safety Instructions 17 Packing Contents 18 Tools...

Страница 3: ...Smart SL A1007846 661Y3100 C Table of Contents MAINTENANCE 25 Periodic Checks by the User 25 Annual Maintenance 25 Draining 26 Bringing back into Service after Maintenance 26 3 EN...

Страница 4: ...ay only be replaced by genuine parts Our water heaters are designed and manufactured for the exclusive purpose of heating and storing domestic hot water The domestic hot water heaters must only be hea...

Страница 5: ...ENERGY LABELLING Smart SL A1007846 661Y3100 C Product Information 5 EN...

Страница 6: ...Smart SL A1007846 661Y3100 C Product Information RATING PLATE EN 6...

Страница 7: ...rcuit 5 Stainless steel 304 or Duplex inner tank 6 Return connection primary circuit 7 Outer steel tank primary circuit 8 Manual air valve 9 Domestic hot water outlet 10 Polypropylene top lid 11 Polyp...

Страница 8: ...167 167 238 POSITION The hot water cylinder must be installed in an area that is dry and protected from the elements Choose the most suitable location according to the position of the boiler and dist...

Страница 9: ...onnection M 1 1 2 1 1 2 1 1 2 1 1 2 Auxiliary DHW loop connection M 1 1 2 1 1 2 1 1 2 1 1 2 Primary pressure drop mbar 90 95 95 92 Heating surface area m 2 65 3 24 3 24 3 58 Max Design Pressure bar 10...

Страница 10: ...60 80 C 2 Load pump in option 3 Manual reset high limit thermostat 89 C max B Blue Bk Black Br Brown G Grey Or Orange W White Y Gr Y e l l o w Green c 1 2 Br Y Gr B Or Or Y Gr Bk Bk 2 N L1 L1 N t 1 Y...

Страница 11: ...onstant flow at 60 C L h 1 037 1 153 1 153 1 232 Power drawn kW 73 88 88 88 Initial heating time Minutes 23 24 24 35 Conditions Primary circuit temp 85 C water supply temp 10 C Maximum Operating Condi...

Страница 12: ...ischarge pipe D2 can now be plumbed into the soil stack but only soil stacks that can handle temperatures of 99 C or greater should be used Extract from The Building Regulation G3 Discharge pipe D1 3...

Страница 13: ...pe size larger than the largest individual discharge pipe D2 to be connec ted 3 60 The discharge pipe should not be connected to a soil discharge stack unless it can be demonstrated that that the soil...

Страница 14: ...dish 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 V a l v e o u t l e t size...

Страница 15: ...gest size Maximum resistance allowed for a straight length 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...

Страница 16: ...t to the earth Advised copper wire section 2 5mm Make sure to install a pressure reducing valve set at 4 5 bar in the DHW circuit if the supply pressure is higher than 6 bar On the DHW circuit install...

Страница 17: ...cteria exists including Legionella pneumophila if a minimum temperature of 60 C is not maintained in both the DHW tank and the hot water distribution network Essential instructions for the electrical...

Страница 18: ...100 C Installation Package One SL hot water tank One multilingual Installation Operation and Maintenance Instructions One energy label PACKING CONTENTS All appliances are delivered tested and packaged...

Страница 19: ...at the circuit between the tank and the safety valve is always open The third DHW tank connection if any can be used for the auxiliary DHW loop If the connection is not used replace the protective plu...

Страница 20: ...IMARY CIRCUIT Typical floor installation Key 1 Primary circuit filling valve 2 Charging pump 3 Check valve 4 Primary circuit stop valve 5 Expansion vessel 6 Pressure gauge 7 Safety valve 8 Drain valve...

Страница 21: ...embly A specific connection kit is required to build this type of assembly Legend 1 Primary circuit filling valve 2 Safety valve 3 Expansion vessel 4 Drain valve 5 Primary circuit stop valve 6 Room th...

Страница 22: ...g to the ratio recommended in the local regulations Consult the manufacturer to determine the compatibility of the antifreeze with the tank s construction materials Essential instructions for the corr...

Страница 23: ...1 Check that the drain valve 3 of your primary circuit is tightly closed 2 Open the stop valves 1 and 2 of the primary circuit connected to the heating boiler 3 Open the air bleed valve 4 located on...

Страница 24: ...circuit is tightly closed 2 Open the stop valves 1 and 2 of the primary circuit connected to the heating boiler 3 Open the air bleed valve 4 located on the top of the hot water tank 4 When the air is...

Страница 25: ...ety unit drips periodically it may be due to an expansion problem or clogging of the valve For internal inspections the hand hole can be used If there is none use one of the water connections to inser...

Страница 26: ...uit of the hot water heater 1 Stop the charging pump 2 Isolate the primary circuit by closing the stop valves 1 3 Connect the drain valve 2 to the sewer using a flexible hose 4 Open the drain valve 2...

Страница 27: ...Figure 3 Figure 4 4 1 2 3 Cold water Hot water 1 1 2 3 Smart SL A1007846 661Y3100 C Maintenance 27 EN...

Страница 28: ......

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