Technical information
WARNING
Electrical Shock Hazard
Disconnect and lock out power before servicing. Wait
5 min to ensure that drive capacitors are discharged
before servicing. Use compressor with grounded
system only. Molded electrical plug must be used for
connection to compressor.
WARNING
Burn Hazard
Failure to follow these warnings could result in serious
personal injury or property damage. Ensure that
materials and wiring do not touch high temperature
areas of the compressor. Personal safety equipment
must be used.
CAUTION
Drive Handling
Caution must be used when lifting and installing the
drive. Failure to use caution may result in bodily injury.
Personal safety equipment must be used. Failure to
follow these warnings could result in personal injury or
property damage.
CAUTION
Safety Statements
Only qualified and authorized HVAC or refrigeration
personnel are permitted to install, commission and
maintain this equipment. Electrical connections must
be made by qualified electrical personnel. All valid
standards and codes for installing, servicing, and
maintaining electrical and refrigeration equipment
must be observed.
Refrigerant cycle
Figure 20: Refrigerant flow diagram
Installation Manual: HMH7 Series - 17 SEER Horizontal Discharge Modulating Heat Pump18
Johnson Controls Ducted Systems