AERCO ECS Retrofit - Manual (Page 44)

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BOILER WATER
OUTLET
BOILER WATER
INLET
CXT-E
CONTROL
VALVE
BOILER WATER
INLET SENSOR
LOCATION
BOILER WATER
OUTLET SENSOR
LOCATION
VALVE SPOOL
PIECE ASSEMBLY
VALVE SPOOL
PIECE ASSEMBLY
Figure 4-9. E-Plus Boiler Water Inlet and Outlet Temperature Sensor Locations
4.4.2 Double-Wall Water Heaters
The sensor installation locations for a Water-to-Water Model DW-24 differ slightly from the locations
used for DW-45 and DW-68 Models as shown in Figure 4-10. DW-45 and DW-68 Sensors are
mounted on the Boiler Water Inlet and Outlet Flanges. However, since these flanges do not exist for
the DW-24, the Sensors are mounted on the bottom of the Boiler Water Inlet and Outlet as shown in
Figure 4-10. Install the Boiler Water Inlet and Outlet Sensors as follows for the Model being retrofitted:
1. Check to ensure that the capillary tubes and compression fittings have been removed from the
Boiler Inlet and Outlet Flanges shown in Figure 4-10. If they have not been previously remove,
disconnect and remove these items at this time.
2. For DW-45 and DW-68 Models, install the Boiler Water Inlet Temperature Sensor in the
tapped opening in the Boiler Water Inlet Flange shown in Figure 4-10. For a DW-24 Model,
install the Sensor in the tapped hole at the bottom of the Boiler Water Inlet as shown.
3. For DW-45 and DW-68 Models, install the Boiler Water Outlet Temperature Sensor in the
tapped opening in the Boiler Water Outlet Flange shown in Figure 4-10. . For a DW-24 Model,
install the Sensor in the tapped hole at the bottom of the Boiler Water Inlet as shown.
4. The electrical connector plugs on the Inlet and Outlet Boiler Water Temperature Sensors will
be connected after the ECS Control Box is installed (paragraph 4.5).