Seifert enclosure air conditioners, both the Progressive series and the SlimLine series, cross to the Pfannenberg DTS side mount series. Capacity is compared below at the 95°F/95°F rating point off the performance curve.
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Seifert side mount to Pfannenberg cross reference
| Model | Published BTU/hr | BTU/hr at 95/95 curve | Voltages | NEMA type | Pfannenberg cross |
|---|---|---|---|---|---|
| 8703x02yyUSL | 1,000 | 1,020 | 115/230 | 12, 3R, 4, 4X | DTS 3021/3031 |
| 4266x001 | 1,130 | 1,000 | 115/230 | 12 | DTS 3021/3031 |
| 4304x001 | 1,230 | 1,190 | 115/230/460 | 12 | DTS 3021/3031 |
| 4767x001 | 1,450 | 1,350 | 115/230 | 12 | DTS 3041 |
| 4768x001 | 1,450 | 1,350 | 115 | 12 | DTS 3041 |
| 4269x001 | 1,710 | 1,710 | 115/230 | 12 | DTS 3041 |
| 4270x001 | 2,050 | 2,050 | 115/230/460 | 12 | DTS 3041 |
| 4305x0z1 | 2,120 | 1,850 | 115/230/460 | 12 | DTS 3041 |
| 8706x52yyUSL | 2,270 | 2,050 | 115/230 | 12, 3R, 4, 4X | DTS 3041 |
| 8708x02yyUSL | 2,700 | 2,830 | 115/230/460 | 12, 3R, 4, 4X | DTS 31X1 |
| 4309x0z1 | 3,000 | 2,900 | 115/230/460 | 12 | DTS 31X1 |
| 4271x001 | 3,020 | 2,700 | 115/230/460 | 12 | DTS 31X1 |
| 4310x0z1 | 3,690 | 3,400 | 115/230/460 | 12 | DTS 31X1 |
| 4272x001 | 4,090 | 3,750 | 115/230/460 | 12 | DTS 31X1 |
| 8712x08yyUSL | 4,100 | 4,095 | 115/230/460 | 12, 3R, 4, 4X | DTS 31X1 |
| 4274x001 | 4,780/5,120/5,120 | 4,780/5,120/4,780 | 115/230/460 | 12 | DTS 31X1 SL |
| 8715x02yyUSL | 5,100 | 5,120 | 115/230/460 | 12, 3R, 4, 4X | DTS 31X1 SL |
| 4315x0z1 | 5,560 | 5,150 | 115/230/460 | 12 | DTS 31X1 SL |
| 4320x0z1 | 6,820 | 7,000 | 115/230/460 | 12 | DTS 31X5 |
| 8720x02yyUSL | 6,800 | 7,165 | 115/230/460 | 12, 3R, 4, 4X | DTS 32X5 |
| 8725x02yyUSL | 8,500 | 8,530 | 115/230/460 | 12 | DTS 32X5 |
| 4325x0z1 | 8,560 | 8,560 | 115/230/460 | 12 | DTS 32X5 |
| 862504001 | 8,700 | 9,000 | 115/230 | 12, 3R, 4, 4X | DTS 32X5 |
| 4330x0z1 | 10,240 | 10,200 | 115/230/460 | 12 | DTS 32X5 |
| 4340x0z1 | 13,650 | 13,650 | 230/460 | 12 | DTS 34X1C |
| 8740x02yyUSL | 13,600 | 14,330 | 230/460 | 12, 3R, 4, 4X | DTS 34X1C |
| 876x202yyUSL | 21,170 | 21,155 | 460 | 12, 3R, 4, 4X | DTS 36X1C |
Pfannenberg DTS part numbers carry a voltage code, so a family name such as DTS 31X1 covers the 115, 230 and 460V builds. Where a 95/95 figure is shown as two or three numbers, they are the 115 / 230 / 460V values in that order. Send the voltage and we return the full orderable part number.
Seifert top mount to Pfannenberg cross reference
| Model | Published BTU/hr | BTU/hr at 95/95 curve | Voltages | Pfannenberg cross |
|---|---|---|---|---|
| 4482x001 | 1,570 | 1,570 | 115/230 | DTT 6101 |
| 4555x001 | 3,750/3,920/3,920 | 3,750 | 115/230/460 | DTT 6301 |
The Pfannenberg DTT top mount range runs from the DTT 6101 at 1,785 BTU/hr published to the DTT 6801 at 14,000 BTU/hr. The DTT 6601 and DTT 6801 are 460V. Final sizing is confirmed against the heat load on the quote.
Seifert models with the z digit set to 8 are recessed. Those cross to the Pfannenberg DTI partially recessed series, which runs from the DTI 6201 C at 3,410 BTU/hr to the DTI 6801 at 13,640 BTU/hr at the 95F/95F point in 230 or 460V. Send the cutout dimensions and we confirm the mounting on the quote.
Seifert part number decoder
| Position | Meaning |
|---|---|
| Prefix 87 | Progressive series |
| Prefix 42 / 43 / 47 | SlimLine and ComPact series |
| x digit (voltage) | 1 = 115V, 0 = 230V, 2 = 460V |
| yy | 01 = powder coated galvanized steel, 2 = 304 stainless cover |
| z digit (ComPact) | 0 = side mount, 8 = recessed |
The Pfannenberg DTS side mount range
| Pfannenberg model | Published BTU/hr | BTU/hr at 95/95 curve | Voltages | NEMA type |
|---|---|---|---|---|
| DTS 3021/3031 | 1,200 | 1,194/1,198 | 115/230 | 12, 3R, 4, 4X |
| DTS 3041 | 3,000 | 2,610 | 115/230/460 | 12, 3R, 4, 4X |
| DTS 3061/3081 | 3,000 | 2,382 | 115/230/460 | 12, 3R, 4, 4X |
| DTS 31X1 | 4,000 | 4,100/4,500 | 115/230/460 | 12, 3R, 4, 4X |
| DTS 31X1 SL | 5,000 | 5,097/5,648/5,301 | 115/230/460 | 12, 3R, 4, 4X |
| DTS 31X5 | 7,000 | 6,142/6,995/6,995 | 115/230/460 | 12, 3R, 4, 4X |
| DTS 32X1 | 8,500 | 6,825 | 115/230/460 | 12, 3R, 4, 4X |
| DTS 32X5 | 13,000 | 11,600/11,000/12,000 | 115/230/460 | 12, 3R, 4, 4X |
| DTS 34X1C | 21,000 | 20,840/20,434 | 230/460 | 12, 3R, 4, 4X |
| DTS 36X1C | 29,000 | 25,181/25,526 | 230/460 | 12, 3R, 4, 4X |
Compare capacity at 95°F/95°F, not the nameplate
Enclosure air conditioner ratings are not published at a single standard condition, so nameplate BTU/hr numbers across brands are not directly comparable. The honest comparison is capacity at 95°F ambient and 95°F enclosure temperature, read off the manufacturer's performance curve. A unit sold as 3,900 BTU/hr can deliver 3,400 BTU/hr at the 95/95 point. Every table on this page shows both numbers where the curve is published.
Four things have to line up before a substitution is valid:
- Capacity at the rating point. Match 95/95 performance, not marketing BTU.
- Voltage. 115, 230 or 460V must match the nameplate.
- Enclosure rating. NEMA Type 12, 3R, 4 or 4X on the air conditioner must match the enclosure environment.
- Mounting cutout. A capacity cross is not a cutout cross. Pfannenberg adapter plates cover specific retrofits; otherwise send the cutout dimensions with the model number and we confirm the mounting approach on the quote.
Also check where the cold air supply sits relative to the hot air return. Several competitor designs place them within 2 to 6 inches of each other, which lets cold discharge short-cycle straight back into the return and cuts effective cooling. Pfannenberg DTS units separate supply and return across the full height of the unit.
Common questions
What is the Pfannenberg equivalent of the Seifert Progressive 8712?
The Pfannenberg DTS 31X1. The 8712x08yyUSL delivers 4,095 BTU/hr at the 95F/95F point and the DTS 31X1 delivers 4,100 at 115V and 4,500 at 230V. Both are available in 115, 230 and 460V, and the DTS 31X1 carries NEMA Type 12, 3R, 4 and 4X.
What is the Pfannenberg equivalent of the Seifert SlimLine 4320?
The Pfannenberg DTS 31X5, which delivers 6,995 BTU/hr at 230 and 460V at the 95F/95F point against 7,000 for the 4320x0z1. Note the NEMA line: the 4320 lists Type 12, while the DTS 31X5 carries Type 12, 3R, 4 and 4X.
What do the digits in a Seifert part number mean?
The 87 prefix is the Progressive series and the 42, 43 and 47 prefixes are SlimLine and ComPact units. The x digit is voltage: 1 is 115V, 0 is 230V, 2 is 460V. In the yy position, 01 is powder coated galvanized steel and 2 is a 304 stainless cover. On ComPact models the z digit is the mount: 0 is side mount, 8 is recessed.
Can Pfannenberg replace a recessed Seifert unit?
Yes. Seifert models with the z digit set to 8 are recessed, and those cross to the Pfannenberg DTI partially recessed series, which runs from the DTI 6201 C at 3,410 BTU/hr to the DTI 6801 at 13,640 BTU/hr at the 95F/95F point in 230 or 460V. Send the cutout dimensions with the model number and we confirm the mounting on the quote.
Comparing another brand? Start at the enclosure air conditioner cross reference hub.
Get a cross-referenced quote
Send the model number off the nameplate and the voltage. We come back with the Pfannenberg cross, the adapter plate if one exists for the retrofit, and a price inside 48 hours.
Email: christian.lauderback@appliedcontrolinc.com
Phone: 248-425-9065
HOFFMAN, SpectraCool and ProAir are trademarks of nVent or its affiliates. SCE and Enviro-Therm are trademarks of Saginaw Control & Engineering. RITTAL, Blue e and Blue e+ are trademarks of Rittal GmbH & Co. KG. IceQube, Kooltronic, Seifert and Thermal Edge are trademarks of their respective owners. Pfannenberg is a registered trademark of Pfannenberg GmbH. Applied Control Inc. is an authorized Pfannenberg manufacturers' representative and is not affiliated with, endorsed by, or sponsored by any competitor manufacturer named on this page. Competitor part numbers appear here solely to identify products for comparison. Capacities are compared at the 95°F ambient / 95°F enclosure rating point using publicly available performance data and are subject to change. Verify current specifications against the manufacturer’s own datasheet before purchase or installation.