Installing The Pressure Relief Valve And Other Components - Watts AERCO Modulex EXT Series Technical Application Manual

Modulex EXT Series Piping
CSD-1 MANIFOLD ASSEMBLY (SUPPLIED)
The pressure relief valve and all other manifold components are shown in Figures 5 and 6.
Flow Switch
Pressure/Temperature
Figure 6: Manifold Assembly and Components for EXT 450 2S, 600 2S, 800 2S & 1100 2S
1-1/2" Pressure Relief Valve
Figure 7: Manifold Assembly and Components for EXT 1500 2S, 2300 2S, 2600 2S & 3000 2S
To install the pressure relief valve and the other components shown, complete the instructions below.
NOTE: Use Teflon tape or a suitable pipe joint compound for component and piping connections
described in the following steps. Refer to Figure 5 and 6, above, for component identification.

4.1. Installing the Pressure Relief Valve and Other Components

Attach manifold to
1.
2. Cut the flow switch paddle. For EXT models 450 2S to 1100 2S, cut for 2-1/2" pipe, and for EXT
models 1500 2S to 3000 2S, cut for 4" pipe as directed in the flow switch paddle packaging. For
installations expecting less than a 10 gpm flow, adjust switch as follows:
a) With no flow, turn adjustment screw on the switch counter-clockwise until the switch trips.
b) Then turn screw 1/2 turn clock-wise and continue installation.
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10.07.2010
Application Guide
Gauge
the outlet supply connection on the boiler via the flanged connections.
AERCO International, Inc. • 100 Oritani Dr.
Phone: 800-526-0288
3/4" Pressure
Relief Valve
Flow Switch
Pressure/Temperature Gauge
Blauvelt, NY 10913 TAG-0099