Bosch 19 SEER Series Operation Manual page 5

Installation & Operation Manual
WARNING: PERSONAL INJURY/ENVIRONMENTAL HAZARD

Any attempt to repair a central air conditioning
product may result in property damage, severe
personal injury, or death.
These units use R-410A refrigerant which operates
at 50 to 70% higher pressures than R-22. Use only
R-410A approved service equipment. Refrigerant
cylinders are painted a "Rose" color to indicate the
type of refrigerant and may contain a "dip" tube
to allow for charging of liquid refrigerant into the
system. All R-410A systems with variable speed
compressors use a POE oil (VG74 or equivalent )
that readily absorbs moisture from the atmosphere.
To limit this 'hygroscopic" action, the system should
remain sealed whenever possible. If a system has
been open to the atmosphere for more than 4 hours,
the compressor oil must be replaced. Never break a
vacuum with air and always change the driers when
opening the system for component replacement.
CAUTION: HOT SURFACE

Do not touch top of compressor. May cause minor to
severe burning. Failure to follow this Caution could
result in property damage or personal injury.
CAUTION: HIGH PRESSURE

Failure to follow proper procedures can result in
personal illness or injury or severe equipment
damage.System contains oil and refrigerant under
high pressure. Recover refrigerant to relieve pressure
before opening system.
WARNING: GROUNDING REQUIRED

Failure to inspect or use proper service tools may
result in equipment damage or personal injury.
Reconnect all grounding devices. All parts of this
product that are capable of conducting electrical
current are grounded. If grounding wires, screws,
straps, clips, nuts, or washers used to complete a
path to ground are removed for service, they must
be returned to their original position and properly
fastened.
BTC 761701105 A | 03.2019
Bosch Inverter Ducted Packaged Heat Pump | 5
CAUTION: BURN HAZARD

Failure to follow this warning will result in abrupt
release of system charge and may result in personal
injury and/or property damage. Extreme caution
should be exercised when applying gauges to service
ports.
WARNING: ELECTRICAL SHOCK

Failure to follow this warning could result in property
damage, severe personal injury, or death.
Grounding is essential before connecting electrical
supply.
WARNING:

This product can expose you to chemicals including
Lead and Lead components, which are known to the
State of California to cause cancer and birth defects
or other reproductive harm. For more information
go to www.P65Warnings.ca.gov.
Data subject to change