AERCO Electronic Control Valve - Manual (Page 10)

VA-115 INSTRUCTIONS – ELECTRONIC CONTROL VALVE, CXT-E
2-2
10. The gauge on the high pressure side of the Valve is for adjustment and maintenance purposes. The
gauge on the low pressure side is to ensure that the correct pressure is being introduced to the
Control Valve. For either steam or water flow, the low side gauge denotes the pressure of the fluid in
the line which may create a hazardous condition.
11. A temperature gauge should be installed in the high pressure side of a hot (boiler) water line as
shown in Figure 2-2.
CAUTION
DO NOT use the Actuator Linkage Frame at the top of the Control Valve Body for
leverage when installing the Control Valve. Use pipe wrenches on the inlet and
outlet hex of the Valve Body.
12. Install the Control Valve with the arrow on the Valve Body pointing in the direction of flow.
13. After the Control Valve has been installed in the steam or hot water line, ensure that all piping
connections are secure and leak tight..
14. If the Electronic Control Valve Type CXT-E is furnished separately, without an AERCO Electronic
Control System (ECS), electrical power and control signal connections must be made at the 3-pin
Molex connector as follows:
Pin 1 COMMON
Pin 2 +24 VDC
Pin 3 4–to-20 mA Control Signal
This completes the installation procedures for Control Valves shipped separately.