Solid State Starter Conversion
RTHA, RTHB, RTHC, RTHD
Installation, Operation, and Maintenance
April 2020
RLC-SVN005B-EN
RTHA 50/60 hz units
RTHB 50/60 hz units
RTHC 50/60 hz units
RTHC 50/60 hz units
This manual covers both Benshaw MX and MX2 solid state starters
MX starter used for units manufactured until November 2010
MX2 starter used in units manufactured December 2010 and later
SAFETY WARNING
Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of
heating, ventilating, and air-conditioning equipment can be hazardous and requires specific knowledge and training.
Improperly installed, adjusted or altered equipment by an unqualified person could result in death or serious injury.
When working on the equipment, observe all precautions in the literature and on the tags, stickers, and labels that are
attached to the equipment.
