ENERVEX MEC 18, Инструкция по установке и эксплуатации

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4. ELECTRICAL INSTALLATION
4.1 GENERAL
The control can be used in one of two ways:
• Interlocked with an appliance so the appliance operation
indirectly controls the fan operation (see Chapter 4.2).
NOTE: This option is not available when used with a VFD.
• Connected so the fan runs continuously independent of
appliance operation (see Chapter 4.3).
In both cases, the control monitors and maintains a
constant pressure.
There are two types of safety systems available:
• Integrated Proven Pressure Switch (standard).
• Integrated Proven Pressure Switch with External Proven
Pressure Switch (accessory) backup (see Chapter 4.4).
MEC 18 is designed for a 1x120VAC power
supply only. Fan output is regulated on the
neutral side and cannot be connected to other
circuits.
!
DANGER
Turn off electrical power before servicing.
Contact with live electric components can cause
shock or death.
Fig. 6
The terminals are connected as shown on Fig. 6:
+24V +24V COM-0 COM +24V
-+
0-10V
-
+0-10V
__
>
Terminal Use
1
Power Supply-L1
2 Power Supply-N
3 Power Supply-Ground
4-5 Voltage Input from Appliance thermostat
Optocoupler (-) (10-120VAC/CDC
6-7 Voltage Input from Appliance thermostat
Optocoupler (+) (10-120VAC/DC)
8 24VDC power supply to dry set of contacts
(appliance thermostat)
9 0VDC power supply to dry set of contacts
(appliance thermostat)
14 Appliance relay contact-Common (max. 120 VAC, 8
Amps.)
15
Appliance relay contact-Normally Open (max.
120VAC, 8 Amps.)
16 PDS-C (Common) Proven Pressure Switch
17 PDS-NC (Normally Closed) Proven Pressure Switch
18 PDS-NO (Normally Open) Proven Pressure Switch
19 Fan-L1
20
Fan-N (regulating)
21 Fan-Ground
22
XTP-0VDC Power Supply(transducer)
23 XTP-24VDC Power Supply (transducer)
24 XTP-0-10VDC Return Signal (transducer)
25 Control signal 0VDC
26 Control signal 0-10VDC