For PTP820C remote mount installatoin, it has no difference between 1+0 or 2+0. Also if you are plannning for remote mount, there is no need for OMT kit as the radio will be connected to antenna through waveguide.
Here is what the installation will looks like.
Figure 1: PTP820C 1+0 or 2+0 DP remote mount setup:

Figure 2: PTP820C 1+0 or 2+0 SP setup

What you need is a remote mount kit for PTP820C. And if you are running 6-13 GHz, you will need an adaptor to convert radio antenna interface from propiertory to standard flange type.
For DP setup, you will need:
N000082L120APTP 820C DC REMOTE MOUNT KIT
N060082L002APTP 820C 6G Remote Mount adaptor - UDR70
N070082L001APTP 820C 7-8G Remote Mount adaptor - UBR84
N110082L001APTP 820C 10-11G Remote Mount adaptor - UBR100
N130082L001APTP 820C 13G Remote Mount adaptor - UBR120
For SP setup, you will need:
N000082L120APTP 820C DC REMOTE MOUNT KIT
N060082L003APTP 820 RFU-C ADPT 6GHz Remote Mount Adpator - UDR70
N070082L002APTP 820 RFU-C ADPT 7_8GHz Remote Mount Adaptor - UBR84
N110082L002APTP 820 RFU-C ADPT 10_11GHz Remote Mount Adaptor - UBR100
N130082L002APTP 820 RFU-C ADPT 13GHz Remote Mount Adaptor - UBR120
and the splitter for PTP820C.
Regards
Allen