AERCO ECS Retrofit - Manual (Page 38)

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4.2 Installation of ECS Components on Top Head Assembly
The ECS to be installed on the Top Head Assembly include:
• Outlet Flange & Gasket
• Outlet Temperature Dual Sensor
• Water Solenoid Valve and piping
• Plugs for previously installed: Shunt Tube, Thermal Element, Feedback Sensor, etc., etc.
4.2.1 Outlet Flange
New Outlet Flange (95015) and Gasket (122152) are provided in the Retrofit Kit. This new Flange
contains a tapped hole which permits easy installation of the new Outlet Temperature Dual Sensor
described in para. 4.2.2. To install the new Outlet Flange and Gasket:
1. Ensure that the Outlet opening in the Top Head (see Figure 2-1, sht. 3) has been thoroughly
cleaned of any gasket residue from the previously installed gasket.
2. Position the new Outlet Flange and Gasket on the four studs protruding from the Top Head on
the Heater.
3. Secure the Outlet Flange to the Top Head using the four hex nuts previously removed in para.
2.3, step 8. Tighten the hex nuts using an alternating pattern to obtain a uniform seal.
Reconnect the outlet piping to new Outlet Flange.
4.2.2 Outlet Temperature Dual Sensor
The Outlet Temperature Dual Sensor (61008-1) provided in the Retrofit Kit includes two Type J
Thermocouples which are housed in a thermowell. The Thermocouple leads are terminated with a 4-
pin connector.
1. Install the Outlet Temperature Dual Sensor in the tapped hole provided on the new Outlet
Flange installed in the previous paragraph.
2. Connection of the Dual Sensor electrical connector will be accomplished following installation
of the ECS Control Box (para. 4.4).
4.2.3 Water Solenoid
The 120 VAC Water Solenoid removed in Section 2 will be replaced with the 24 VDC Solenoid Valve
provided in the Retrofit Kit. Proceed as follows:
1. Attach the new Solenoid Valve (49029) to the nipple in the Top Head (ref. Figure 2-1, sht. 3)
2. Reconnect the previously installed drain piping to the Solenoid Valve outlet.
3. Electrical connection of the Solenoid Valve will be accomplished following installation of the
ECS Control Box.