AERCO ECS Retrofit - Manual (Page 33)

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4. INSTALLATION OF RETROFIT KIT ITEMS
When installing the new Electronic Control Valve Actuator and Electronic Control System (ECS)
Control Box, a number of ancillary items must also be installed or replaced. These include a new
Flow Meter, a replacement Water Solenoid Valve and several Temperature Sensors.
To install the Retrofit Kit items, proceed as follows:
4.1 Installation of Control Valve Actuator and Linkage Assembly
Identical Actuator Assemblies, part no. 69009 are used on all AERCO Control Valve sizes from 1 inch
to 4 inches. However, there are two types of Linkage Assemblies designated part no. 24038-1 and -2
used with different sizes of AERCO Control Valves. Linkage Assembly, part no. 24038-1 is used on
AERCO Valve sizes ranging from 1 inch to 3 inches. The 24038-2 Linkage Assembly is used only on
4 inch Valves. The primary difference between these two assemblies is the Linkage Assembly
Adapter shown in Figure 4-1. In addition, the linkage pin location for 24038-1 assemblies will vary for
1 to 2 inch Valves and for 2 ½ to 3 inch Valves as shown in the upper portion of Figure 4-1.
Figure 4-1. Linkage Assemblies Part No. 24038-1 & 24038-2