A.O. Smith SGS - 50, SGS - 28, SGS - 100, SGS - 80, SGS - 30 User Manual

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Solar control

SGS

Condensing High Efficiency Gas-Solar Water Heater

SGS - 28/30/50/60/80/100

Storage Tank

SGS

Fully room sealed condensing high efﬁciency gas-solar water

heater (95 % gross) • Maximum solar contribution through fully integrated intelligent solar controller • 1 control and display unit for the complete installation • Extra solar contribution possible up to 40 % compared to standard solar systems • Suitable in combination with storage tanks up to 3000 liters • Flexible ue options (maximum lenght 115m) • Thermocontrol for easy exible control / fault diagnosis • Programmable for legionella purge cycle • All models suitable for natural or LP gas • Meets latest EPC standards: SGS 28-60 : 0,902 • Scale formation is reduced through the improved design and location of the heat exchanger • Very easy maintenance and installation • SGS 80 - SGS 100 standard applied with powered anodes • Remote control connection • Voltage-free contact for general fault indication • Unvented kits are optional

Innovation has a name.

SGS

Technical speciﬁcations

SGS 28

SGS 30

SGS 50

SGS 60

SGS 80

SGS 100

Gas data natural gas 2H (G20)

Input* kW 32.1 34.5 52.6 63.2 86.6 105.5 Output kW 30.5 32.7 48.8 59.6 81.9 99.8 Inlet pressure mbar 20 20 20 20 20 20 Burner pressure mbar 8.5 8.5 8.5 11.5 6.0 6.0 Gas consumption ** m Diameter injector mm 4.90 5.10 7.00 7.10 6.30 6.80 Max. ﬂue gas temperature °C 70 50 75 75 50 50 Flue gas discharge kg/h 56.8 61.1 85.4 101.4 141.9 164.3

/h 3.1 3.3 5.0 6.0 8.3 10.1

Gas data butane gas 3+ G30

Input* kW 30.7 32.8 50.6 59.4 - Output kW 29.8 31.8 48.1 56.9 - Inlet pressure mbar 30 30 30 30 - Burner pressure mbar - - - - - Gas consumption ** kg/h 2.2 2.4 3.7 4.3 - Diameter injector mm 2.50 2.60 3.40 3.80 - Max. ﬂue gas temperature °C 70 50 75 75 - Flue gas discharge kg/h 60.0 62.2 86.0 101.9 - -

Gas data propane gas 3+ G31

Input* kW 29.0 30.9 50.3 59.1 84.8*** 103.3*** Output kW 28.1 29.8 47.7 56.9 81.9*** 99.8*** Inlet pressure mbar 37 37 37 37 30*** 30*** Burner pressure mbar - - - - 13.0*** 13.0*** Gas consumption ** kg/h 2.1 2.2 3.6 4.2 6.1*** 7.4*** Diameter injector mm 2.50 2.60 3.40 3.80 4.70*** 5.10*** Max. ﬂue gas temperature °C 70 50 75 75 50*** 50*** Flue gas discharge kg/h 54.3 56.5 85.1 101.0 142.1*** 176.4***

Draw-off capacity

Storage capacity l 217 368 368 368 460 460 Max. temperature setting °C 80 80 80 80 80 80

= 10ºC / T

cold

30 min ∆T=44°C l 457 642 784 897 1139 1296 60 min ∆T=44°C l 755 961 1261 1461 1939 2270 90 min ∆T=44°C l 1053 1280 1738 2043 2737 3245 120 min ∆T=44°C l 1350 1599 2215 2625 3540 4220 Continuous ∆T=44°C l/h 595 638 954 1164 1601 1950 Heating-up time ∆T=44°C min 22 35 23 19 17 14 30 min ∆T=50°C l 402 565 690 773 1002 1140 60 min ∆T=50°C l 664 846 1110 1286 1706 1998 90 min ∆T=50°C l 926 1126 1530 1798 2411 2856 120 min ∆T=50°C l 1188 1407 1950 2310 3115 3714 Continuous ∆T=50°C l/h 524 562 840 1025 1409 1716 Heating-up time ∆T=50°C min 25 39 26 22 20 16 30 min ∆T=55°C l 366 513 627 703 911 1036 60 min ∆T=55°C l 604 769 1009 1169 1551 1816 90 min ∆T=55°C l 842 1024 1391 1634 2191 2596 120 min ∆T=55°C l 1080 1279 1772 2100 2832 3376 Continuous ∆T=55°C l/h 476 511 763 932 1281 1560 Heating-up time ∆T=55°C min 27 43 29 24 22 18

set

= 65ºC

Electrical data

Power consumption W 275 275 275 275 600 690 Power supply VAC/Hz 230(-15% / +10 % VAC)

General

Fan rotational speed at ignition r.p.m. 4500 4500 4500 4500 2790 3120 Working speed fan r.p.m. 5000 5400 6000 6660 5100 5700

Pressure differential Pa 635/605 855/825 885/855 1085/1055 1005/975 1145/1115

Diameter of air restrictor mm 23 23 28 29 36 38 Anodes - 4 4 4 4 2-electric 2-electric Maximum working pressure bar 8

Shipping data

Empty weight kg 177 214 214 214 480 480 Max. weight kg 394 582 582 582 940 940 Weight incl. packaging kg 197 234 234 234 491 491 Width packaging mm 870 870 870 870 920 920 Height packaging mm 1550 2080 2080 2080 2060 2060 Depth packaging mm 950 950 950 950 1020 1020

*** 3p (G31)

* Gas data on gross value

** Gas consumption at 15°C en 1013,25 mbar

SGS

Dimensions SGS 28-60

SGS 28

SGS 30

SGS 50

SGS 60

A 1485 2005 2005 2005 C 490 490 490 490 D 705 705 705 705 E 925 925 925 925 F 850 850 850 850 G 80/125 100/150 100/150 100/150 H 1460 2000 2000 2000 Hx 265 265 265 265 Hy 375 375 375 375 K 1365 1895 1895 1895 M 265 255 255 255 N 1485 2005 2005 2005 Ny 205 205 205 205

P 265 270 270 270 R 180 170 170 170

S 995 1505 1505 1505 W 220 240 240 240

1 Cold water connection R11/2 2 Hot water connection R1 3 Gas valve connection Rp

4 Drain valve connection

5 Temperature and pressure valve 1 / 11.5 NPT

6 Inspection ﬂange 95x70 7 Condensate drain Ø40 (SGS 28)

Rp1 (SGS 30-60)

On all SGS units 3 year warrranty is appliccable on the tank and 1 year on all parts.

Storage Tank

Solar control

SGS

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