Instructions / Assembly

SP-1000

The Solar PaQ

Solar Panel + Inverter + Universal Roof Mount Racking

UPC: 861150002609

Microinverter Instructions

Installing a replacement BDM-250

1. Attach the replacement BDM‐250 to the PV module racking using hardware recommended by

your module racking vendor. If you are using grounding washers (e.g., WEEB) to ground the chassis

of the BDM‐250, the old grounding washer should be discarded, and a new grounding washer must

be used when installing the replacement BDM‐250. Torque the BDM‐250 fasteners to the values

listed below: 1/4” mounting hardware – 45 in‐lbs minimum

5/16” mounting hardware – 80 in‐lbs minimum.

2. If you are using a grounding electrode conductor to ground the BDM‐250 chassis, attach the

grounding electrode conductor to the BDM‐250 ground clamp.

3. Connect the AC cable of the replacement BDM‐250 and the neighboring BDM‐250 to

complete the branch circuit connections.

4. Complete the connection map and connect the PV Modules.

1) Complete the connection map

2) Each BDM‐250 has a removable serial number located on the individual label. Enter the

unique address contained in part of this serial number into a BDG‐256, and correspond it to a

number in the connection map.

3) Connect the PV Modules

4) Completely install all BDM‐250 and all system inter‐wiring connections prior to installing the

PV modules.

a) Mount the PV modules above their corresponding BDM‐250. Each BDM‐250 comes with two

oppositely sexed DC connectors.

b) First connect the positive DC wire from the PV module to the positively marked DC connector

(male pin) of the BDM‐250. Then connect the negative DC wire from the PV module to the negatively

marked DC connector (female socket) of the BDM‐250. Repeat for all remaining PV modules using

one BDM‐250 for each module.