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Figure 2. Safety ground pin connection for PowerEdge XR-series heater
1. Green/Yellow safety ground wire
3. Locking/star washer
5. M4 Nut
2. Assembling the power supply input plug to the
heater power cable
To connect the power supply input plug to the heater power cable, perform the following steps:
Steps
1. Insert the heater power cable black wire marked as -48 V DC into power supply input plug housing position marked -48V.
The crimp terminal must be properly oriented as shown in the image.
2. Insert the heater power cable red wire marked as RTN into power supply input plug housing position marked RTN. The crimp
terminal must be properly oriented as shown in the image.
3. Secure both black and red wires into the input plug using the screws. Tighten the screw to an approximate torque of 23.9
LB-in +/-5% (2.7 N-m +/-5%) and insert the cap over the screws. The screw is intended to go through the hole in the
crimp terminal. Ensure that the cap is inserted properly, and the crimp terminal is secured with the screw by lightly tugging
on the cables.
CAUTION:
Damage can occur if the crimp terminals are not fully inserted into the plug before tightening the
screws.
WARNING:
Failure to follow the documented assembly instructions could result in potential property
damage, personal injury, or death.
Figure 3. Heater power cable
1. Heater input plug
3. Screws on the plug
5. Crimp terminals
6
Overview
2. Grounding post/stud
4. Spring washer
2. Cap on plug
4. Power supply input plug
6. Heat shrink tubing
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