
Modbus Card Instruction Manual v1.1
©2011 Profire Energy Inc
Page 8
Procedure When No Expansion Card is Preinstalled
1. Shut off the power to the PF2100 system.
2. Remove the 4 screws that hold the terminal card in place in the product enclosure. Do not lose these screws as you will need them later. See Figure 9.
3. Carefully install the Modbus Card onto the Terminal Card such that the long pinned header on the Modbus Card mates with the socket P1 on the
Terminal Card. Be careful not to bend any pins while doing this. Continue to apply pressure to the Modbus Card until the 4 standoffs fit into the holes in
the PCBA. See Figure 10.
4. On the back side of the Terminal Card, install 4 hex nuts onto the standoffs to hold the Modbus Card in place. Tighten to 4 in*lbs. Do not over tighten or
the standoffs may break. See Figure 10.
5. Place the terminal card back into the product enclosure and fasten it using the 4 screws removed previously. Tighten to between 12 and 26 in*lbs taking
care to not leave any screws loose enough that the terminal card rattles around and not too tight that the enclosure holes begin to strip out. See Figure
9.
6. You are done installing the card! There should not be any extra parts left over. If there are, double check if you have missed a step.
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