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8.0 Parameters
9.0 Digital Inputs
The XEV EX48 comes with two (2) digital inputs:
a voltage-free input and a high voltage input; Both can be
configured as cooling call. In this way the cooling signal can
come from the controllers with direct load outputs or via the
Controllers with voltage-free outputs. One of these inputs
must be configured as the cooling call.
10.0 Forced Opening
If necessary, change the FoP parameter to force
the valve to open. For example, if FoP is set to 50
(FoP = 50), the valve will be opened at half of full
scale. To disable this function, set the FoP to default value
(FoP = not used).
The valve opening is enabled
only when CCL digital input is enabled.
11.0 Electrical Connections
The controller comes with a screw terminal
Block to connect cables with a cross section
up to 2.5 mm
. Heat-resistant cables have to be used.
2
Before connecting the cables, verify that the power supply
complies with the controller's requirements. Separate the
probe cables from the power supply cables, from the outputs
and the power connections. Do not exceed the maximum
current allowed on each relay, in case of heavier loads, use a
suitable external relay.
11.1 Probes
The recommended temperature probe placement is illustrated
in Figure 11-1. For Suction Lines less tan 7/8" Diameter, bulb
placement should be at 12 o'clock position. For Suction lines
greater tan 7/8" Dia. The preferred bulb placement is at 4 or
8 o'clock For suction pressure probes, there is no particular
recommendation.
Figure 11-1 - Recommended Temperature Probe Placement
www.emersonclimate.com/flowcontrols
Temperature Sensor Must Be insulated
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