AERCO ECS Retrofit - Manual (Page 4)

4
NOTE
Figure 2-1 shows the locations of the affected components and assemblies for
a typical Helitherm, Model SW1B-Plus II Water Wizard installation. Figure 2-2
shows component locations for a typical Double-Wall, Model DW-24.
The actual size and location of affected components and assemblies may
vary, depending on Packaged Water Heater Model, size, and type of Control
Valve being retrofitted. Refer to the applicable AERCO Heat Exchanger
Manual provided with your installation for additional details.
P&T RELIEF VALVE
CONTROL BOX
HOT WATER OUTLET
TEMPERATURE GAUGE
COMPOUND
PRESSURE
GAUGE
WATER HEATER
PT.N O.12869-
1
SHELL OUTLET °F PSIG STEAM PRESS.
POWER ON TRIPPED
WIRING CONDUIT TO
WATER SOLENOID VALVE
CONTROL VALVE*
HEATER SHOWN WITH
PNEUMATIC CONTROL
VALVE. AN ELECTRO-
HYDRAULIC OR SELF-
CONTAINED VALVE MAY
ALSO BE USED WITH THE
PACKAGED HEATER.
*NOTE:
SECOND OPTIONAL
P&T RELIEF VALVE
SHUNT TUBE
SHUNT TUBE
FRONT VIEW
COLD WATER IN
DRAIN
DRAIN BALL
VALVE
STEAM
IN
Figure 2-1. Typical Helitherm Water Heater Component Locations (Sheet 1 of 3)