YMGI, Heat Pump, models:

TTWA Series	Installation Instructions & User Manual
VRUO-2436HP-U2B(54)	Installation Instructions & User Manual Service Manual
WMMS -18EC-V2B2	Installation Instructions And User Manual
WMMS-09EF-M2B4	Installer'S Instruction & User'S Manual
WMMS-12EC-V2B592	Installation Instructions And User Manual