Installation manual

PVT-MCT10A-EN Page | 34

7.2 SFC Field Wiring Schematic

The Chromasun MCT-HT Collector System was designed to simplify installation. There are two

(2) panel-to-panel interconnections between each MCT: The piping interconnection; and the

power-data-ventilation (PDV) interconnection. At the end of each MCT string there is a junction

box. This junction box makes it so that bare wire can be used for the homeruns between the

MCT string and the Chromasun SFC. As the units were designed to be hermetically sealed, it is

important to do all of the ventilation/wiring connections at the same time to maintain the

interior of the panel. Avoid performing these interconnections on humid days or when there is

standing water on the rooftop. MCT-HT units should always be able to vent the air inside;

otherwise there could be pressure build-up or vacuum pressure inside the unit which could

cause damage.

For the panel-to-panel connections PDV interconnects are used to supply ventilating air, as well

as power and data. For each individual string a homerun from the SFC will provide the

ventilation, power, and data.

1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.101.091.08

2.01 2.02 2.03 2.04 2.05 2.06 2.07 2.102.092.08

3.01 3.02 3.03 3.04 3.05 3.06 3.07 3.103.093.08

Field Controller

SFC String A

SFC String B

SFC String C

Legend

MCT-HT

String Junction Box

PDV Homerun

PDV Connection

Figure 13: 3 rows of 10 MCT's in series connected to a Desiccant box and Field Controller

NOTE: The set up is intended as an example only. The field Layout should be specified by an

engineer per Chromasun Design Manual.