Spec Sheet

14 31-5000409 Rev. 0
ENGLISH
OUTDOOR UNIT
Part 1: General
1.1 Outdoor Unit
A. The Haier FlexFit outdoor unit shall be comprised of a condenser coil with all components and controls
necessary to perform the rated operation.
1.2 Warranty
A. The outdoor unit shall be covered by a manufacturer's parts warranty. See Appendix for details.
1.3 Sound Pressure Rating
Outdoor Models Sound Pressure
Rating dB (A)
2U18MS2VHB 53
3U24MS2VHB 54
4U36MS2VHB 56
Part 3: Components
3.1 Coil
A. The outdoor coil shall be made with a blue colored hydrophilic coating on the aluminum fins and packed with internally
grooved copper tubing, toincrease the effective heat exchange surface area by 25%, resulting in higher efficiencies and
shorter defrost cycles (approx. 29%.)
B. Coils shall be helium pressure tested at the factory within a range of 600 - 650 PSI.
C. Outdoor unit shall be factory charged with R-410A refrigerant for 25 feet of lineset.
3.2 Fan Motor
A. The outdoor fan motor shall be a brushless, variable speed DCV motor type.
B. The fan motor shall be molded with heat-hardened resin.
C. The fan motor shall have permanently lubricated SRC bearings.
3.3 Fan Blade
A. The outdoor fan blade shall be a UL flame rated plastic-resin design.
B. The fan blade shall be factory balanced in quiet performance and enhanced velocity.
3.4 Compressor
A. The compressor shall be a DC rotary type and A-PAM inverter-driven for stable operation in lower and higher
frequency.
B. The compressor shall be vairable speed, variable capacity.
C. The compressor shall have an internal overload protection device.
D. The compressor shall use PVE (FV50S) refrigerant oil for better anti-wear effectiveness, superior resistance to
capillary tube blockage and no hydrolysis compared to POE oil.
3.5 4WV
A. The outdoor unit shall contain a four-way reversing valve (4WV) to change system mode from cool to heat.
3.6 EEV
A. The refrigerant flow shall be regulated by an electronic expansion valve (EEV).
B. The outdoor control shall monitor the refrigerant flow through the EEV using a pulse-operated coil.
C. The EEV shall maintain the target of 10°F (5.5°C) of superheat.
3.7 Base Pan
A. The base pan shall be constructed of commercial grade DC51/DC52 hot-dip galvanized steel with coating.
B. The outdoor unit shall ship with a drain port adapter sized for 1/2 inch tubing to manage condensate run off
Part 2: Installation
2.1 Condensate
A. The installer must adhere to local building codes for managing condensate water produced by the outdoor unit.
2.2 Clearances
A. The installer must follow the recommended clearances provided in the Installation Manual.