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3. Technical Data
1 /2
54
"
1 /2
53
"
Boiler
Control
Panel
A
Boiler Supply (male NPT)
B
Boiler Return (male NPT)
C
Boiler Exhaust Connection
Ref.
Description
1
Pressure Relief Valve
2
Flow Switch
3
Spare
4
Air Vent
5
NTC Temperature Sensor (Supply Water)
6
Temperature and Pressure Gauge
2 /7
58
"
5 /6
42
1 /7
"
32
F
H
1/2"
D
2
1/2"
2
E
F
8" ID
Absolute Boilers 750-900-1050
"
5
3
2
1
4
8
7
6
10
9
11
12
Gas Connection (NPT male)
Combustion Air Inlet
8" ID
Honeywell Touch Screen
Size
Ref.
Description
1/4"
1
7
Aquastat (Manual Reset)
3 /
8
4 "
Low Water Cut Off (Manual Reset)
1 /
9
2 "
pH Sensor (Optional)
1 /
10
4 "
NTC Temperature Sensor (Return Water)
11
1"
Boiler Drain
1 /
2 "
12
Condensate Drain
Absolute Boilers 750-900-1050
13
21"
11"
A
B
2 /3 "
34
"
2 /7
25
1 /8
"
11
14
J
1"
Wiring Junction
H
Anchor Bolt
7"
E
J
D
C
"
1 /2
15
13
1 /
2 "
3/4"
Size
1 /
2 "
3 /
4 "
3 /
4 "
1 /
2 "
3 /
4 "
1/4"
1
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