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SR-plus Technical & Performance Details

Dimensions and Technical Information
SR-plus heating boiler (models 1200 to 4000)

Key

Flow

Hydraulic Drain

Flue Gas Test Point

Return

Shell Access Connection

Flue Outlet

Safety Valve Connection

Smokebox Cleaning Door

Control Panel

Smokebox Condensate Drain Connection

A single phase 230V supply is required for the control

panel operation. Single phase burners are electrically

supplied via the control panel. Three phase burners

require a separate three phase isolated supply

connection to allow for boiler/burner door opening. A separate

the control panel and the burner. All power supplies to the boiler/

burner/other associated equipment (ie: gas booster, separate oil

pump, etc.) should be isolated via the same switched isolator.

SR-

Plus

Model

kW Rating

at high

A B

C D E F G H

L M N

Flow/Return

BS4504 PN16

Safety valve

Flanged

to BS4504

PN16

(from model

1750)

Flue I/D

Dry

Weight

Water

Content

litres

1200

1151-1250 1626 1500 2909 2514 876 220 1795 1345 380 876 1745 1630

125 N/B

R2”

350

3350

1320

1500

1426-1500 1722 1590 2909 2514 927 220 1806 1356 466 927 1833 1718

150 N/B

R2”

400

3650

1330

1750

1625-1760 1852 1720 3361 2966 992 220 2137 1687 500 992 1990 1875

150 N/B

100 N/B

400

4325

2150

2000

1900-2050 1952 1820 3381 2966 1042 240 2137 1687 590 1042 2090 1983

150 N/B

100 N/B

450

4600

2690

2250

2200-2350 2103 1970 3494 3069 1118 250 2200 1750 590 1118 2260 2145

150 N/B

100 N/B

450

5400

3350

2500

2450-2650 2143 2016 3585 3140 1135 270 2372 1922 600 1135 2323 2208

200 N/B

100 N/B

450

5900

3660

3000

2900-3000 2261 2120 3674 3219 1200 280 2502 2052 600 1200 2448 2333

200 N/B

100 N/B

500

6525

3670

3500

3250-3500 2477 2300 4235 3720 1327 340 2652 2112 812 1327 2628 2513

200 N/B

100 N/B

500

8700

4020

4000

3750-4150 2660 2400 4270 3759 1460 340 2662 2162 812 1460 2702 2587

200 N/B

100 N/B

550

10850

4130

Control panel can be

mounted on left or right

hand side.

Burner

Elevation view

Rear view

Burner

August 2014

Содержание SR-plus 1200

Страница 1: ... Issued By TECHNICAL DEPT Dated August 2014 Approved KS Operating and Installation Instructions for the SR plus hot water boiler 0088 ...

Страница 2: ...Filling the system with water water treatment Burner matching Fitting the Burner Water flow return temperatures Control details Boosters Commissioning Operating Instructions including sequencing of boilers under BMS control Maintenance Inspection Servicing Boiler Burner Servicing Summer Shutdown Burner Maintenance Oil Burner Fault Finding Chart Gas Burner Fault Finding Chart 3 4 4 4 5 6 8 9 15 9 9...

Страница 3: ...d burner reference number These numbers are indicated on the appropriate nameplates For completion by Plantroom Attendant Boiler Model Burner Ref No Output kW Fuel K No Commissioning Date For technical servicing or parts enquiries telephone fax or e mail to Hoval quoting the boiler s serial number as above The installation should be in accordance with current I E E Regulations relevant British Sta...

Страница 4: ...ance with relevant British Standards the Gas Safety Regulations Building Regulations I E E Regulations and the by laws of the local Water Authorities A flat level fire proof floor should be provided and the location should permit the provision of a satisfactory flue system and adequate air supply Gas Safety Nameplate Delivery General BS6644 Installation of Gas Fired BS6880 LowTemperature Hot Water...

Страница 5: ...ture is governed by the pressure available at the highest point of the system Take the 17o C anti flash margin from the saturated temperature of steam at that pressure to find the maximum operating temperature Door Hinging The hinged side door nuts are supplied with a locknut at the back of the door boss Hoval should be advised of the door and gas burner handing when the boiler is ordered or at th...

Страница 6: ...T m3 h 21 50 25 80 32 24 42 99 53 74 64 49 Boiler water content litres 800 770 1340 1250 1320 1330 Dry Weight without burner 6 kg 1700 1754 2463 2616 3350 3650 Type 1750 2000 2250 2500 3000 3500 4000 Maximum output kW 1760 2050 2350 2650 3000 3500 4150 Minimum output kW 880 1025 1175 1325 1500 1750 2075 Boiler input at maximum output kW 1931 94 2242 89 2573 93 2908 89 3285 87 3837 72 4555 43 Boile...

Страница 7: ... equipment ie gas booster separate oil pump etc should be isolated via the same switched isolator 2 L D F J H G C M E 3 8 4 9 9 Burner CL 1 6 5 7 Elevation view N 205 SR Plus Model kW Rating at high A B C D E F G H J L M N Flow return BS4504 PN16 Safety valve Flue I D Dry Weight kg Water Content litres 500 411 500 1413 1262 2323 1958 766 190 1320 920 280 766 1486 1371 100 N B R 2 250 1700 800 600 ...

Страница 8: ...y Weight kg Water Content litres 1200 1151 1250 1626 1500 2909 2514 876 220 1795 1345 380 876 1745 1630 125 N B R2 350 3350 1320 1500 1426 1500 1722 1590 2909 2514 927 220 1806 1356 466 927 1833 1718 150 N B R2 400 3650 1330 1750 1625 1760 1852 1720 3361 2966 992 220 2137 1687 500 992 1990 1875 150 N B 100 N B 400 4325 2150 2000 1900 2050 1952 1820 3381 2966 1042 240 2137 1687 590 1042 2090 1983 1...

Страница 9: ...ation through the walls and air ventilation openings 3 From the chimney outlet e g where dwellings are located very close by the boilerhouse or above the chimney outlet Natural gas fired plant has low frequency sound pressure levels which are disturbing to nearby residents when the boilers are operating particularly at night The following are sound and vibration control measures which can be taken...

Страница 10: ...ural or mechanical extraction Mechanical extract ventilation with natural inlet must not be used Any mechanical means of entering air into a basement boilerhouse should have a balancing outlet so that the air pressure in the boilerhouse does not exceed 0 05 W G 12 5 Pa Where mechanical inlet and mechanical extract system is applied the design extraction rate should not exceed one third of the desi...

Страница 11: ...correct combustion and high efficiency to reduce running time to a minimum and to maintain low levels of CO2 Greenhouse effect CO and NOx d a n g e r o u s g a s e s C u r r e n t regulations for NOx limits 1993 are maximum 260 mg kWh 148ppm at 0 O2 Burners supplied with Hoval boilers fully meet this requirement Adequate doors should be provided in flues and chimneys for cleaning and inspection pu...

Страница 12: ...ssion There will always be corrosion within a heating hot water system to a greater or lesser degree irrespective of water characteristics unless the initial fill water from the mains is treated Even the water in closed systems will promote corrosion unless treated For these reasons Hoval strongly recommend that when necessary the system be thoroughly cleaned prior to the use of a stable inhibitor...

Страница 13: ...es so that the pump does not overheat Gas burner valve trains should be located within 300mm of the burner and supported independently of the boiler at the opposite side to the door hinge so that the door can open after breaking a connecting joint Sealing of the burner draught tube A small annular space is necessary around the burner draught tube in the door refractory to enable the burner to be w...

Страница 14: ...rtment Terminals Terminals are provided in the control panel for linking in additional controls e g time switch pressurisation unit interlocks etc The control panel as illustrated is generally supplied for mounting on top of the boiler casing by the installer For normal high low operation the control stat is set by the Hoval commissioning engineer at the required lev el e g 80o C The limit stat wi...

Страница 15: ...tion should be given to the use of a purpose designed bypass to dissipate the excess heat and the installation of a twin duty stand by system to allow for regular inspection Where a stand by booster is fitted it should be operated regularly or in rotation If the booster is operating in rotation auto cycling may have been installed as an option Important If a vital function is served install a stan...

Страница 16: ... chimney if fitted are in the open position and locked open if manually operated and if electrically operated that the burner is interlocked electrically to prevent operation until the damper is open the electrical installation with the appropriate wiring diagram for the boiler and burner and for correct fan rotation correct direction of flow in the gas line correct operation of the gas booster if...

Страница 17: ...ter that the boiler is fired up at a rate allowing the door refractory to reach a uniform temperature through its thickness thereby preventing any damage burner is adjusted to give optimum combustion together with flame shape and penetration the Heating Engineer will have the opportunity to receive instruction on the correct operation of the plant during commissioning and to aquaint himself with t...

Страница 18: ...pared operating and maintenance instructions specifically for the whole plant those instructions should be referred to in the first instance Instruments and Controls Instruments are generally mounted at the top front of the boiler A boiler flow water thermometer will always be present an altitude gauge may also be provided The basic controls for any boiler will be a A sequence control box mounted ...

Страница 19: ...of damage or leakage and for security In an open vented heating system check Level of water in the feed and expansion tank That the ball valve is free to operate correctly All air vents are operating correctly NOTE No continuous make up of water should be taking place In this event check where a leak may be occurring or if pumping over is taking place On the boiler door examine the ceramic strip s...

Страница 20: ... to clean a warm boiler 2 Switch OFF electrical supply to the burner Where a plug connection is fitted in the cable from the boiler to the burner disconnect at this point Switch OFF electrical supply to the booster 3 Turn OFF all fuel shut off valves at the burner 4 Where rigid fuel pipes to burner are employed e g gas burners disconnect pipe s to allow the boiler door to open 5 Fully open the boi...

Страница 21: ...Summer shut down 11 If disconnected plug in the boiler burner electrical connection 12 Check boiler door is effectively closed ineffective closure will be detectable by sight or smell 13 It is recommended that when the boiler has become thoroughly hot a combustion efficiency check is made by the Service Engineer 14 If the boiler is not immediately to be used switch OFF electrical supply to burner ...

Страница 22: ...r to atmosphere until gas has reached the test point WARNING No smoking or naked lights to be allowed as a gas air mixture is dangerous Periodical examination of all pipework should be carried out The recommended method is to brush a soap solution around all the jointed areas A leak in the system would have the effect of forming bubbles CAUTION Do not place any items in the boiler combustion chamb...

Страница 23: ...e preheating equipment is operating 1 Switch off burner Check spark plug gap Check H T leads and connections Check and clean ignitionelectrode s andinsula tor 2 Opendoorandcheckwhether oil has been sprayed into combustion chamber if no evidence of spray clean or replace burner nozzle s 3 Check as above If no spray c h e c k t h e f o l l o w i n g a There is oil in the fuel tank b All necessary va...

Страница 24: ...d or restricted Flue damper closed 7 Burner draught tube or flame plate misplaced or faulty 8 Door refractory failure Action 1 Clear obstruction 2 Reset damper and make a combustion check special instruments required 3 Replace nozzle s 4 Replace with correct nozzle s 5 Reset pump pressure regulator 6 Clean tubes Open flue damper and check why it became closed Clear blockage or restriction 7 Call S...

Страница 25: ...tra violet cell fault Action 1 Check a Main isolator switch is on and power is available at the control panel b Overload protective devices of burner motors if fitted 2 Switch contacts must be in the burner start position Check switch is not stuck in the satisfied position 3 Check a That all switches are closed b Booster is not locked out due to low inlet gas pressure and that pressure switches fu...

Страница 26: ...erheated 4 Gas pressure alteration 5 Boiler tubes flue or chimney blocked or restricted 6 Door refractory failed Action 1 As B3 2 Clean cell and check correctly inserted facing the flame 1 Switch OFF burner and check pipelinejointswithsoapsolution 2 Closepilotmanualvalveandthen main manual valve at the burner toseeifthisisolatestheproblem Call gas engineer to check the automaticvalves Donotoperate...

Страница 27: ...Conservation of Energy Protection of the Environment Hoval Limited Northgate Newark Notts NG24 1JN Telephone 01636 672711 Fax 01636 673532 e mail service hoval co uk Web Site www hoval co uk March 2014 ...

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