12
6
1
4
5
11
1Expansion vessel
2Pressure relief valve
3Non return valve
4Thermostats
5Safety
6Element plate assemblies
12
6
7
2
3
8
10
9
7Element 'On' neon
8Inlet
9Discharge
10Outlet
11Cable entry
12Temperature and pressure relief valves
12
6
1
4
5
11
1Expansion vessel
2Pressure relief valve
3Non return valve
4Thermostats
5Safety
6Element plate assemblies
12
6
7
2
3
8
10
9
7Element 'On' neon
8Inlet
9Discharge
10Outlet
11Cable entry
12Temperature and pressure relief valves