Installation Of Dpls2 - Mitsubishi Electric DPLS2 Installation Manual

2. Installation of DPLS2

Drain Pan Level Sensor/Control:
(To ensure proper performance of product, instructions must be followed.)
1. Disconnect (and lock-out) all power to the M-Series, P-Series, S-Series or CITY MULTI Indoor Unit at the Disconnect Switch (if
installed) or at the main disconnect panel serving the indoor and/or outdoor unit.
2. Connect DPLS2 Splice Connector to the selected mating Wire Harness Connector – see wiring harness selection
(Table 1). Connect the Control Box's Splice Connector to the mating connector on the Wire Harness (Fig 1).
Typical Installation - example: Wall Mount Indoor Unit – MS/MSY/MSZ/PKA/PKFY:
1. Remove front cover of indoor unit in order to expose the coil and the control circuit area of the unit (Fig 2). The disassembly of
the front cover, air filters, and possibly electrical shields will vary according to style of indoor unit installed. See the Mitsubishi
Electric Trane's Technical Manual for detailed disassembly and details.
2. Locate the corresponding connector (see Table 1) on the printed control circuit board and, remove the connector of the
thermistor (Fig 4). Plug female connector of the Wire Harness into the printed circuit board, and plug the male connector on
the opposite end into the thermistor connector (Fig 5).
3. Connect black/red power input wire to indoor unit power supply terminal (S1, S2).
4. Determine the best location for the DPLS2 Control Box (above the drain pan and outside of the main airflow):
Using the double-sided adhesive pad, mount the Control Box in a location inside the indoor unit that will allow clearance for the
cover to be reassembled (Fig 6).
5. Reassemble all covers that were removed during the installation.
6. Test the DPLS2:
Reconnect power to the indoor unit. Use extreme caution; beware of high voltage on the indoor unit during testing. Turn unit
on and set cooling thermostat to lowest temperature setting. Make sure to restore power to the outdoor unit before performing
the test in step 7.
R50043-0519
Fig 1
Fig 3 Fig 4
Fig 2: Typical indoor unit with cover removed
Fig 5 Fig 6
© 2019 Mitsubishi Electric Trane HVAC US, LLC