Product Description
Armstrong Compass R 25-140 SS Design Envelope Dry Rotor Circulator – Stainless Steel, 230V (119282-373)
The Armstrong Compass R 25-140 (part number 119282-373) is a Design Envelope variable speed dry rotor circulator with a stainless steel casing for open systems and potable water (NSF 372 & NSF 61, lead free), and a 1/2 hp ECM permanent magnet motor for 1 phase, 208–240 V, 50/60 Hz. The model number means a maximum head of about 25 ft and a maximum flow of about 140 USgpm. Compass R is designed as a universal replacement for fixed-speed circulators using popular flange-to-flange dimensions, and its patented Auto mode and sensorless control can save up to 70% in operating cost and energy compared with a fixed-speed circulator.
| Model | Compass R 25140SS-10-4 (230V) |
| Part number / SKU | 119282-373 |
| Casing | Stainless steel (open systems) |
| Motor | 1/2 hp permanent magnet ECM, inverter duty |
| Power supply | 1 phase, 208–240 V, 50/60 Hz |
| Maximum head / flow | about 25 ft / 140 USgpm |
| Flange-to-flange | 10.0 (254.0) in (mm) |
| Connection | 4-bolt flange |
| Flange bolt to bolt | 5.06 (128.52) in (mm) |
| Maximum working pressure | 175 psi (12 bar) |
| Liquid temperature | -4°F – 230°F (-20°C – 110°C) – below 150°F (65°C) recommended for open systems |
| Ambient temperature | -4°F – 104°F (-20°C – 40°C), indoor use only |
| Pumped liquids | Water or up to 50% water / ethylene or propylene glycol mix |
| Certification | ETL listed for US and Canada (conforms to UL 778, certified to CSA Std. C22.2 No. 108); NSF 372 & NSF 61 |
| Spool piece | Included |
| Weight | 30 lb (13.6 kg) |
Control Modes
Lights on the display show the control mode selected; the display shows actual power consumption and flow rate.
- Auto – Armstrong's patented sensorless mode that adapts the pump to the system automatically.
- Proportional pressure curves PP1 – PP4
- Fixed head (constant pressure) curves PC1 – PC5
- Fixed speed curves I – VI – for direct replacement of fixed-speed circulators
Design & Submittals
Materials of construction
- Pump body: Stainless steel
- Impeller: Polyether imide (PEI)
- Pump shaft: Ceramic
- O-ring: EPDM
- Mechanical seal: EPDM elastomer with silicon carbide seat
- Lead content: Certified <0.25% weighted average lead; complies with California Health and Safety Code Section 116875 (AB 1953)
Dimensions – inches (mm)
| A | B | C | Weight |
|---|---|---|---|
| 7.92 (201) |
10.75 (273) |
10.00 (254) |
30 lb (13.6 kg) |
A = width (front view). B = overall depth (side view). C = flange-to-flange height. Dimensions and weights are for reference only.
Other data
- Motor enclosure: ODP, indoor application only. Enclosure class IP42. Insulation class F.
- No external motor protection required.
- Sound pressure level lower than 43 dB(A).
- Maximum relative air humidity: 95%.
- A spool piece is included: where the Compass R is shorter flange-to-flange than the circulator being replaced, the spool piece makes up the difference and may eliminate piping changes.
- For open systems, a liquid temperature below 150°F (65°C) is recommended to avoid precipitation of calcium.
Documents
- Compass R Design Envelope Dry Rotor Circulators – Submittal (PDF)
- Design Envelope Compass R – Solution Outline (PDF)
- Compass R Typical Specification (DOC)
- Armstrong Design Envelope FAQs (PDF)
Associated Products
Companion flange kits – stainless steel
(flange, gasket and nuts / bolts)
| Part no. | Pipe size | Fits Compass R |
|---|---|---|
| 805188-621K* | 2.5" | R25-140 |
| 805189-621K* | 3" | R25-140 |
* The submittal lists the 25-140 iron kits as 805189-111K (2.5") and 805188-111K (3"), and the stainless steel kits as 805188-621K (2.5") and 805189-621K (3") – the numbers are reversed between materials, so the part number must be confirmed before ordering.
Flange kits are sold separately – call (416) 236-2338 or email sales@bramhambros.com for pricing and availability.
Warranty
Covered by the Armstrong Fluid Technology manufacturer's warranty.
- Armstrong Terms of Sale & Warranty – Canada (PDF)
- Conditions de vente et garantie Armstrong – Canada, français (PDF)
Installation, Maintenance, Parts Kits & Manuals
- Compass R – Installation & Operating Instructions (PDF)
- Compass R – Complete Parts Breakdown (PDF)
- Residential Circulator Pump Parts Kits – Cross-Reference Catalog (PDF)
Replacement parts and help selecting the right circulator – call (416) 236-2338 or email sales@bramhambros.com.
