Installation
RMWH-SVX001C-EN 15
Electrical Power Supply
Requirements
WARNING
Hazardous Voltage!
Failure to disconnect power before servicing could
result in death or serious injury.
Disconnect all electric powe
r, including remote
disconne
cts before servicing. Follow proper lockout/
tagout procedures to ensure the power cannot be
inadvertently energized. Verify that no power is present
with a voltmeter. To prevent electrical shock, the circuit
board cover must be in place when power is on.
WARNING
Proper Field Wiring and Grounding
Required!
Failure to follow code could result in death or serious
injury. All field wiring MUST be performed by qualified
personnel. Improperly installed and grounded field
wiring poses FIRE and ELECTROCUTION hazards. To
avoid these hazards, you MUST follow requirements for
field wiring installation and grounding as described in
NEC and your local/state electrical codes.
NOTICE
Electrostatic Discharge!
Electrostatic discharge can short equipment circuitry.
Ensure that you are properly grounded be
fore handling
sensitive electronic equipment.
The device uses a power supply that accepts inputs of 100–
240 Vac, 50/60 Hz, 200 VA maximum.
Make sure the device is connected directly to the ac power
source through a dedicated circuit breaker.
Use an approved three-conductor wire (minimum
16 AWG), rated 300 Vac at 221°F (105°C), to complete
the
ac power connection.
Us
e only conduit hubs and hardware that are suitable for
fiberglass enclosures.
Do the following procedure to connect electrical
power:
1. Disconnect electrica
l power.
2. Install a circuit breaker for the
incoming power
connec
tions of the device.
a. Put the circuit breaker in a location that is near the
device and eas
y to
access.
b. Clearly mark the circuit breaker as the
disconnecting
unit for the device.
3. If applicable, remove
the lockin
g mechanism.
4. Release the two latches on the left side of the device.
5. Open
the enclosure.
6. Attach the ESD wrist strap to the ESD conn
ection point
inside the enclosure.
7. Use a 1/4-in. hex driver to re
move the four hex nuts on
the circuit bo
ard cover.
8. Remove the circuit board cover.
9. Remove the ac power wiring hole plug.
10. Install conduit hubs that are suitable for fiberglass
en
closures through the ac power wiring hole plug
openings.
11. Put the AC power wiring
throug
h the conduit.
12. Connect the ac power wiring to the L1 (HOT) and L2
(NEUTRAL) input t
erminals. Make sure the connectors
are seated securely.
13. Connect the ac power ground wire to the ground bar so
the device
chassis ground
is connected to the earth
ground.
14. Make sure the wiring is not touching the sensor
assembl
y.
15. Install the circuit board cover.
16. Use a ¼-in. hex driver to install the 4 hex nuts
on the
circuit board cover.
17. Disconnect the ESD wrist strap from the ESD
connection
point inside the enclosure.
18. Close the enclosure.
19. Latch the two latches.
20. If applicable, attach
the locking mechanism.
21. Supply electrical power to the device.
Relay Outputs
Refer to the Figure 11, p. 14 for details.
The TruSense™ RMWH Refrigerant Monitor has the
followin
g five single-pole, double-throw (SPDT) relays.
The relay contacts are rated 8 A at 240 Vac/24 Vdc. Each
relay ca
n be connected as normally open (NO) or normally
closed (NC).
•Fault
•Alarm
• Warning
•Caution
•Horn
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