Modulex EXT Commercial Series
CHAPTER 4: Installation Instructions
OMM-0160_A
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Figure 4-5: CSD-1 Manifold Assembly and Components
Complete the instructions below to install the pressure relief valve and the other components.
NOTE:
Use Teflon tape or a suitable pipe joint compound for component and piping connections.
Installing the Pressure Relief Valve and Flow Switch
1.
Attach manifold to the outlet supply connection on the boiler via the flanged connections.
2.
Cut the flow switch paddle
for 4” pipe, as directed in the flow switch paddle packaging. For
installations expecting less than a 10 gpm flow, the switch must be adjusted 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.
3.
Connect the following components to the tapped holes in the manifold assembly, as shown above:
•
Flow Switch
•
Pressure/Temperature Gauge
NOTE:
Ensure the flow switch is
installed with the “flow” arrow pointing in the direction of the flow.
4.
Install the 1-1
/2” Pressure Relief Valve to the third tapped hole in the CSD-1 manifold assembly, as
shown above.
5.
Check to ensure that all components are securely tightened and that the flow switch paddle moves
freely without interference.
6.
Locate terminals FL and 10 on the Input/Output box. Remove the jumper wire between these
terminals and connect the two flow switch wires. The Flow switch wires have no polarity, so can
be inserted without regard to position.
1-
1/2” Pressure Relief Valve
Flow Switch
Pressure/
Temperature
Gauge
Summary of Contents for AERCO MLX EXT 1500 2S
Page 72: ......
