Sanhua SD-17 (SH043) Microchannel Heat Exchanger (Condenser) | 1324 × 622.6 mm | 4.7-32.3 kW (R410A) | 45 bar

Sanhua SD-17 (factory/order code SH043 — SD-17 and SH043 refer to the same product) is a 100% aluminum microchannel condenser coil from the Sanhua MCHE standard series. It is a 1324 × 622.6 mm single slab (1 bank) design, 25.4 mm deep, with 65 flat tubes and 2 passes. Depending on air velocity, it provides 4.7 - 32.3 kW (16,086 - 110,157 BTU/h) heat rejection with R410A. The all-aluminum (AA3003) body eliminates galvanic corrosion; the inlet/outlet tubes are copper for easy brazing.

Aluminum Microchannel Condenser Coil

SD-17 / SH043 is a single slab microchannel condenser consisting of fins + flat tubes + end manifolds. The manifold diameter is 2×Ø32 mm, the fin density is 23 FPI and the fin height is 8.1 mm. The refrigerant distribution is divided into 2 passes as 45/20 (inlet/outlet). The maximum working pressure is 45 bar (4.5 MPa) and the burst pressure is 135 bar (13.5 MPa), with an internal volume of only 1.634 liters — requiring a much smaller refrigerant charge than a conventional condenser.

Technical Specifications

• Brand / Model: Sanhua / SD-17 (factory code SH043) · type designation 25.4-FPI23-2G
• Type: Microchannel condenser coil (MCHE), single slab
• Dimensions: Length (L) 1324 mm · Height (H) 622.6 mm · Depth / fin width 25.4 mm (1")
• Manifold: 2 × Ø32 mm (1.26") · Fin: 23 FPI, fin height 8.1 mm
• Tubes: 65 flat tubes (25.4 × 1.3 × 26) · 1 bank · 2 passes · distribution 45/20
• Connection: Inlet OD Ø15.88 mm (5/8") · Outlet OD Ø12.7 mm (1/2") — copper tubes
• Pressure: Max. working 45 bar (4.5 MPa) · Burst 135 bar (13.5 MPa)
• Internal Volume: 1.634 liters · Weight: ~9.6 kg
• Material: Tubes long-life aluminum alloy · Fins / manifold / "C" retaining bar Aluminum AA3003 · Inlet-outlet tubes copper
• Compatible Refrigerants: R410A, R404A, R22, R134a (published capacity data) · the series is also compatible with R407C / R507

Heat Rejection Capacity (air velocity 0.5 - 4.5 m/s)

Official Sanhua test conditions: condensing 46°C, subcooling 6.7°C, inlet gas temperature 76°C, air inlet 35°C, relative humidity 39.28%.

• R410A: 4.71 - 32.29 kW (16,086 - 110,157 BTU/h)
• R404A: 4.87 - 30.80 kW (16,602 - 105,080 BTU/h)
• R22: 4.59 - 29.57 kW (15,668 - 100,901 BTU/h)
• R134a: 4.61 - 28.36 kW (15,737 - 96,763 BTU/h)

Technician Tips

• SD-17 = SH043: Both codes are the same product; use both codes when sourcing and searching.
• Connections are copper: Since the inlet/outlet tubes are copper, they are brazed to the field tubing in the normal way — no aluminum brazing is needed. However, the coil body is aluminum; a hole/crack in the body requires special aluminum welding and is often not economical.
• Capacity depends heavily on air velocity: ~4.7 kW at 0.5 m/s rises to ~32.3 kW at 4.5 m/s. Select your fan airflow according to your capacity target.
• As a condenser, mount it vertically (or tilted at least 15° from horizontal), positioned with the inlet connection at the top.
• Clean the fin surface regularly with low-pressure air/water in the fin direction; high pressure flattens the fins and reduces capacity.
• Take care to avoid impacts/crushing of the flat tubes during transport and installation.