IT
Indirect calorifier
IT - 300/400/500/600/750/1000
IT - 1500/2000/2500/3000
Indirect water heater (calorifier) for a wide range of applications
• Single-wall spiral heat exchanger • PermaGlas Ultra Coat
second-generation glass coating technology prevents corrosion
• IT 300: Three adjustable legs facilitate easy installation
• IT 400-1000: Insulated ring base • Insulated access cover for
comprehensive waterside maintenance • Replaceable magnesium
anode • Options: Flexible magnesium anode for installation in
confined 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) • Optional ancillaries: unvented kits
• Destratification pump kit
Innovation has a name.
IT
Dimensions
IT 300
A
D
G
H
M
N
O
P
1370 1705 2040 1835 2030 2000
720 720 720 910 910 1060
325 255 255 305 305 345
765 1010 1205 1145 1205 1305
75
70
70
85
85
95
1310 1650 1990 1795 1990 1960
115 115 115 180 180 180
325 330 330 415 415 445
595 500 500 650 650 700
375 1095 1290 1235 1295 1395
R
S
T
-
1360 1700 1475 1670 1600
U
1115 -
-
-
-
-
1
2
3
4
7
Cold water
Hot water
Inlet coil
Outlet coil
Connection
R1
R1
R2
R2
R2
R2
Rp1
Rp1
R21/2 R21/2 R21/2
R21/2 R21/2 R21/2
Rp1 Rp1
Rp1 Rp1
Rp3/4 Rp3/4 Rp3/4 Rp3/4 Rp3/4 Rp3/4
Rp1
Rp1
Rp11/4 Rp11/4
Rp11/4 Rp11/4
8 a/b Connection immersion
well
Rp1/2
-
-
-
-
-
-
8
Anode connection
Rp11/4 Rp11/4 Rp11/4 Rp11/4 Rp11/4
10 Anode connection
R1
-
-
-
-
-
Dimensions in mm. All IT calorifiers receive a three years
warranty on the tank and one year on parts.
IT 400-1000
IT
Dimensions
IT 1500-3000
A
D
1880
1880
1100
1200
350
2068
2068
1100
1200
350
1939
1939
1400
1500
430
2068
2068
1400
1500
430
G
H
M
N
O
P
1305
135
1930
180
1305
135
2118
180
1283
183
1989
180
1283
183
2118
180
425
425
510
510
R1
R2
R3
S
500
950
1400
605
500
950
1588
605
580
982
1430
685
580
982
1559
685
T
710
710
790
790
U
V
1515
1550
1703
1738
1530
1530
1624
1659
1
2
3
4
7
8
Cold water
Hot water
Inlet coil
Outlet coil
Connection
Connection immersion well
R 2
R 2
R 2
R 2
R 2
R 2
R 2
R 2
Rp 11/4
Rp 11/4
Rp 11/4
Rp 3/4
Rp 3/4
Rp 1
Rp 11/4
Rp 11/4
Rp 11/4
Rp 3/4
Rp 3/4
Rp 1
Rp 11/4 Rp 11/4
Rp 11/4 Rp 11/4
Rp 11/4 Rp 11/4
Rp 3/4
Rp 3/4
Rp 1
Rp 3/4
Rp 3/4
Rp 1
10 Anode connection
11 Service valve
12 Temperature meter
Rp 3/4
Rp 3/4
Rp 3/4
Rp 3/4
IT
Installation diagrams
IT 300
2
3
4
5
6
Protected cold supply setup
T&P valve
Stop valve
Non-return valve
Circulation pump
A
B
C
F
Cold water
Hot water
Return circulation
Primary flow
Primary return
G
The IT 300 and 400-1000 is also available in unvented version.
A.O. Smith unvented system kits utilise combination valves.
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.
IT 400-1000
IT
Installation diagrams
IT 1500-3000
3
4
5
6
9
T&P valve
Stop valve
Non-return valve
Circulation pump
Drain valve
11 Isolating valve
12 Temperature gauge
14 Hot water outlets
17 Three way valve
18 Water tank
19 Float valve
A
B
C
F
Cold water
Hot water
Return circulation
Primary flow
G
E
Primary return
Over flow pipe
Expansion vent pipe
H
The IT 1500-3000 is also available in unvented version.
A.O. Smith unvented system kits utilise combination valves.
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.
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