AERCO Electronic Control Valve - Manual (Page 7)

VA-115 INSTRUCTIONS – ELECTRONIC CONTROL VALVE, CXT-E
1-1
1 - GENERAL INFORMATION
INTRODUCTION
This Instruction Manual provides installation, adjustment, operation and maintenance procedures for the
AERCO Electronic Control Valves, Type CXT-E. These Valves can be used for either steam flow or hot
(boiler) water flow applications.
If an AERCO Electronic Control System (ECS) is also included with the shipment, refer to AERCO
Instruction Manual AC-105. In addition to providing full coverage for the ECS, Instruction Manual AC-105
also includes all descriptions and procedures contained in this manual (VA-115).
ELECTRONIC CONTROL VALVE, TYPE CXT-E
Each Electronic Control Valve is comprised of three major sections; the Valve Body, the Linkage
Assembly and the Valve Actuator. The Control Valves are available in sizes ranging from 1 inch to 4
inches. An identical Actuator Assembly is used with each size Valve Body. The Linkage Assembly used
with each size Valve Body is identical, except for minor differences in the Shaft Adapter stroke of the
mechanical linkage. Figure 1-1 shows the basic dimensions for each size AERCO Electronic Control
Valve, Type CXT-E.
It should be noted that the Control Valves used for steam flow are identical to those used for hot (boiler)
water flow.
CONTROL VALVE ACCESSORIES
The accessories required for use with AERCO Electronic Control Valves, Type CXT-E will depend on the
specific application. Detailed installation instructions, including typical installation drawings are provided in
the INSTALLATION Section of this manual. However, please note the items listed below and ensure that
ALL mandatory items are available:
ACCESSORY REQUIREMENT
• Upstream Shutoff Valve - Mandatory
• Downstream Shutoff Valve Suggested for ease of maintenance.
Required if a Bypass Line is used.
• Strainer and Blow-Off Valve Mandatory
• High Side Pressure Gauge Recommended for adjustment and
maintenance
• Low Side Pressure Gauge,
Compound Type for steam flow
Recommended for adjustment and
maintenance.
If any of the above items have been furnished by AERCO with the CXT-E Control Valve, the necessary
drawings and/or instructions should be included with the shipment.