I have a DHS Systems 19-6344-003 20Kw , 96000 Cooling BTU, 46100 Heating BTU unit that I'm looking for info on. I have not been able to get it to run yet and I believe the fuel system needs priming. It has a Lister-Petter 4801991-LPWT4A079 4cylinder diesel engine. It has about 2000 hours on it. I don't think the HVAC is going to work as someone has previously removed some parts and one of the motors does not spin over. I have not been able to find any info on just the engine either. Does anyone have instructions for priming or a TM for this setup? Pictures to follow. I'm thinking of using the generator as a backup for my house, currently I have a 5kw MEP002A as needed. Also is there a market for the HVAC unit or is it just scrap?