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3.25 HEAT METER INSTALLATION
Note: This unit is designed to be fitted with the Ideal HIU Heat
Meter only.
1. Isolate and drain down the HIU. Refer to Section 3.5.
2. Remove the front panel. Refer to Section 3.4.
3. Remove insulation front section. Refer to Section 3.12.
4. Slacken and disconnect the pipe nuts from the blanking
pipe and remove.
5. Install the flow meter with new gaskets. Ensure orientation
is as with flow direction arrow pointing down.
Pipe blank & blanking
plug position shown
Remove blanking plug and gasket from Primary flow filter
6.
manifold.
7.
Use the tool provided to position the O-ring inside the
primary flow filter manifold.
8.
Place both halves of the plastic adapter around the 3
notches of the temperature sensor.
9.
Press the adapter together and screw hand tight (3 – 5
Nm) into the primary flow filter manifold.
Installation and Servicing
SECTION 3 - SERVICING
10. Lift the right-hand side of the control panel out of its hinge
mounting and feed the 4 wires (3 if wireless MBUS) under
the lower part of the panel below the hinge point.
11. Refit the control panel back into its hinge point taking care
not to trap the wires.
12. Place the display in the lower part of the cut out on the
right-hand side of the outer control panel and slide it
upward until it engages in the meter mounting clips that
are moulded into the control panel.
13. Clip the 4 wires (3 if wireless MBUS) into the control box
retention channels directly below the heat meter.
Continued....
45
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