ELECTRICAL SHOCK HAZARD
Failure to follow this warning could cause personal injury or death.
Before performing service or maintenance operations on unit, always turn off main power switch to unit and install lockout tag. Unit may have more than one power switch.
UNIT OPERATION AND SAFETY HAZARD
Failure to follow this warning could cause personal injury, death and/or equipment damage.
Puron®
PERSONAL INJURY AND ENVIRONMENTAL HAZARD
Failure to follow this warning could cause personal injury or death.
Relieve pressure and recover all refrigerant before system repair or final unit disposal.
Wear safety glasses and gloves when handling refrigerants. Keep torches and other ignition sources away from refrigerants and oils.
CUT HAZARD
Failure to follow this caution may result in personal injury.
Sheet metal parts may have sharp edges or burrs. Use care and wear appropriate protective clothing, safety glasses and gloves when handling parts and servicing 38AUQ units.
INSTALLATION GUIDELINE
Replacement /Retrofit – R22 to Puron®
Split system heat pumps are intended to be installed with matching indoor sections only. The 38AUQ heat pump outdoor units are matched only with
Acid test – If the existing system is being replaced because of a compressor electrical failure, assume acid is in system. If system is being replaced for any other reason, use an approved acid test kit to determine acid level. If even low levels of acid are detected, install a 100 percent activated alumina suction line filter drier in addition to the replacement
Recommendation: Install a ball valve in the liquid line at the filter drier location when installing a suction filter in the suction line.
Installation –
1.Remove the existing evaporator coil or fan coil and install the replacement coil.
2.Drain oil from low points and traps in suction line tubing if they were not replaced.
3.Remove the existing outdoor unit. Install the new outdoor unit according to these installation instructions.
4.Install the
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage or improper operation.
Never install
5.If required, install a 100% activated alumina suction line filter drier at the outdoor unit.
6.Evacuate and charge the system according to the instruc- tions in this installation manual.
7.Operate the system for 10 hr. Monitor the pressure drop across the suction line filter drier. If pressure drop ex- ceeds 3 psig (21kPa), replace
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