A.O. Smith ITS-1000, ITS-600, ITS-500, ITS-750, ITS-400 User Manual

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ITS

Dual coil indirect calorifi er

ITS - 300/400/500/600/750/1000

Indirect water heater (calorifi er) for a wide range of applications

• Single-wall spiral heat exchanger • PermaGlas® Ultra Coat™

second-generation glass coating technology prevents corrosion

• ITS 300: Three adjustable legs facilitate easy installation

• ITS 400-1000: Insulated ring base for easy installation

• Insulated access cover for comprehensive waterside maintenance

• Replaceable magnesium anode • Options: Flexible magnesium
anode for installation in confi ned areas • Powered anode for
reduced maintenance requirements • Temperature and pressure

valve with stainless-steel spring set to 95 °C and a maximum water

pressure of 7 bar • Analogue temperature gauge (0-120 °C)

• Electric element heat packs (3 - 36 kW) • Unvented kits

• Destratication pump kit

ITS

Technical specifications

ITS 300

ITS 400

ITS 500

ITS 600

ITS 750

ITS 1000

Technical data

Output solar coil kW 46 52 68 72 80 87
Surface area solar coil m
Water capacity solar coil l 9.5 9.9 12.8 20.3 22.6 24.6
Flow rate solar coil (80-60°C) l/h 1978 2236 2924 3096 3440 3741
Pressure drop solar coil mbar 44 78 166 37 50 61
Output primary coil kW 27 37 42 40 56 58
Surface area primary coil m
Water capacity primary coil l 5.7 6.9 7.9 11.3 15.8 16.4
Flow rate primary coil (80-60°C) l/h 1161 1591 1806 1720 2408 2494
Pressure drop primary coil mbar 12 30 43 7 18 20
Maximum working pressure tank bar 10 10 10 10 10 10
Maximum working pressure coil bar 16 16 16 16 16 16
Maximum operating temperature tank °C 95 95 95 95 95 95
Maximum operating termperature coil °C 110 110 110 110 110 110
Standby loss kWh/24h 1.32 1.60 1.88 1.85 2.03 2.19
Anodes - 1 1 1 1 1 1
Maximum weight kg 422 527 666 887 980 1347

2

1.45 1.64 2.13 2.39 2.66 2.89

2

0.85 1.15 1.31 1.33 1.86 1.93

Draw-off capacity*

Storage capacity l 289 382 470 641 718 1007
30 min. ∆T=44°C l 957 1200 1480 1684 1979 2374
60 min. ∆T=44°C l 1671 2069 2555 2779 3309 3791
90 min. ∆T=44°C l 2384 2939 3630 3873 4638 5208
120 min. ∆T=44°C l 3098 3809 4705 4968 5967 6625
Continuous ∆T=44°C l/h 1427 1740 2150 2189 2658 2834
Heating-up time ∆T=44°C min. 12 13 13 18 16 21
30 min. ∆T=50°C l 842 1056 1303 1482 1742 2089
60 min. ∆T=50°C l 1470 1821 2249 2445 2912 3336
90 min. ∆T=50°C l 2098 2586 3195 3409 4081 4583
120 min. ∆T=50°C l 2726 3352 4141 4372 5251 5830
Continuous ∆T=50°C l/h 1256 1531 1892 1926 2339 2494
Heating-up time ∆T=50°C min. 14 15 15 20 18 24
30 min. ∆T=55°C l 766 960 1184 1347 1584 1899
60 min. ∆T=55°C l 1337 1655 2044 2223 2647 3033
90 min. ∆T=55°C l 1907 2351 2904 3099 3710 4166
120 min. ∆T=55°C l 2478 3047 3764 3974 4773 5300
Continuous ∆T=55°C l/h 1141 1392 1720 1751 2127 2267
Heating-up time ∆T=55°C min. 15 16 16 22 20 27

Shipping data

Weight empty kg 133 145 196 246 262 340
Weight incl. packaging kg 144 156 207 257 273 352
Width packaging mm 780 780 780 870 870 1010
Height packaging mm 1510 1850 2150 1930 2150 2100
Depth packaging mm 780 780 780 870 870 1010

* Draw-off capacity is based on both coils. This is not always possible.

ITS 300

ITS 400-1000

ITS

Dimensions

A 1370 1705 2040 1835 2030 2000
D 720 720 720 910 910 1060
G 325 255 255 305 305 345
H 765 771 915 907 967 947
J 850 941 1085 1087 1147 1127
K 1110 1277 1469 1387 1567 1487
M 75 70 70 85 85 95
N 1310 1652 1990 1797 1992 1962
O 115 115 115 180 180 180
P 325 330 330 420 420 440
R 595 500 500 660 660 710
S 375 855 1000 1000 1065 1035
T 1025 1360 1700 1485 1680 1600
U 1115 - - - - ­V 800 - - - - -

1 Cold water R1 R2 R2 R21/2 R21/2 R21/2
2 Hot water R1 R2 R2 R21/2 R21/2 R21/2
3/4 Solar coil R1 R1 R1 R11/4 R11/4 R11/4
5/6 Primary coil R1 R1 R1 R11/4 R11/4 R11/4
7 Connection Rp3/4 Rp3/4 Rp3/4 Rp3/4 Rp3/4 Rp3/4
8a+b+c Connection Rp3/4 - - - - ­8 Anode connection - Rp1

1

/4 Rp11/4 Rp11/4 Rp11/4 Rp11/4

10 Anode connection R1 - - - - -

Dimensions in mm. All ITS dual coil calorifi ers receive a three
years warranty on the tank and one year on parts.

ITS 300

ITS 400

ITS 500

ITS 600

ITS 750

ITS 1000

ITS

Installation diagrams

Vented

1 Pressure reducing valve
3 T&P valve
4 Stop valve
5 Non-return valve
6 Circulation pump
9 Drain valve
11 Isolating valve
12 Temperature gauge
14 Hot water outlets
15 Expansion relief valve
16 Expansion vessel
17 Three way valve
18 Water tank
19 Float valve

A Cold water
B Hot water
C Return circulation
F Primary flow
G Primary return
E Over flow pipe
H Expansion vent pipe

A.O. Smith unvented system kits utilise combination valves.

Unvented

Further installation and connection details can be found
in the Installation & Commissioning Manual.

For the parts numbers of components please refer to the
“Maintenance and accessories” chapter.

www.aosmithinternational.com

Data subject to change INT/0808/ITS/01

Terms and conditions apply, please refer to our website.