AERCO RECON 1000 - Manual (Page 133)

RECON Water Heaters Installation, Operation & Maintenance Manual
CHAPTER 8 – WATER HEATER MANAGEMENT
OMM-0103_0A AERCO International, Inc.  100 Oritani Dr.  Blauvelt, NY 10913 Page 133 of 178
GF-147 Phone: 800-526-0288 PRI: 10/28/2014
8.11.2 Sequencing Valve Operating Characteristics
The Sequencing Valve is powered by 24 VAC which is supplied from a step-down transformer
located in the Power Box of the RECON Water Heater. The 24 VAC power output and a 2 to 10
VDC control signal from the I/O Box of the Water Heater are routed to the Sequencing Valve via
a 4-pin Molex connector.
During normal Water Heater Management (WHM), a control signal of less than (<) 2 VDC will
rotate the valve to the fully open (90°) position. Conversely, a control signal above 8 VDC will
rotate the valve to the fully closed (0°) position. The sequencing valve will send a status of the
Valve (open/close) as a feedback signal (2 – 10Vdc) to the C-More. The valve position can be
observed on the scale provided on the Actuator Linkage.
Figure 8-7: Sequencing Valve Connections