Manual# I27028 4-6 Rev. 2 – 11/22/2017
13. The combination valve includes a regulator. If the diaphragm breaks, gas will vent
from the small fitting on top of the regulator. Attach a small gas line to the fitting,
and run it outdoors.
14. After the gas connections have been made, check all joints for possible leaks using
a solution of soapy water. Do this before applying full gas pressure.
4.7 ELECTRICAL CONNECTIONS
1. The R-Series unit is designed to operate on three-phase AC at up to 575V at 60 Hz.
The required voltage is listed on the nameplate on the machine. Be sure the line
voltage and frequency match the voltage and frequency required by the machine. A
wiring diagram for this unit is included in this manual.
The R-Series unit may be wired for up to 575V AC.
The unit can produce enough voltage and current to
cause serious injury or death. Always turn off the
power before working inside the unit. Follow standard
lock-out tag-out procedures. Only trained electricians
should perform work with the electrical parts.
Be sure the unit is connected to a source with the
correct line voltage and frequency. If a higher voltage
is connected than the unit can accept, a shock hazard
may be created or damage may be done to the
machine. The correct line voltage is listed on the
nameplate on the machine.
Do not try to control the humidity by switching the
power to the dehumidifier on and off. Use a humidistat
to control the unit. The wiring diagram included in this
manual shows the contacts for the humidistat.
2. Turn the electrical disconnect handle on the Munters unit to the off position.
3. Color coded Cam-Lok type single pole electrical connectors are mounted to the
main electrical enclosure to allow for the quick connection of the main electrical
power.
4. The R05 and R10 units have one set of Cam-Lok disconnects. The R15 units have
two sets as follows:
70 Amp – main controls and gas reactivation
270 Amps – electric reactivation
If the unit is to be operated with gas reactivation heat, then only the 70 Amp
connections are required. If electric reactivation heat is to be used, then both sets
of connections are required.
5. Connect the power cables and equipment ground to the Munters unit via the Cam-
Lok type connectors. Ensure all connectors are firmly attached.
6. Turn on power to the unit. For a moment, set the Auto/Off/Manual switch to Manual,
then back to off. Check the direction of rotation of one of the blower fans. Each fan
should turn in the direction shown on the attached label. If a fan is moving the other
way, turn off the R-Series unit, disconnect and lock-out the incoming power.
Reverse any two of the three leads powering the Munters unit.
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