OLMOHVAC.com - R454B - 22.0 - 3 - 5 zones - Outdoor Condenser - Sierra - 208-230V
OLMO Multi-Zone R454B Outdoor Condenser 42,000 BTU (3.5 Ton)
OLMO Multi-Zone R454B Outdoor Condenser 42,000 BTU (3.5 Ton)
Regular price
$2,325.00 USD
Regular price
$2,500.00 USD
Sale price
$2,325.00 USD
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OLMO Multi-Sierra Outdoor — 42,000 BTU, R454B — OS-RMS42-230VO
Inverter heat pump outdoor unit. SEER2 up to 22. Heating to −4 °F. Supports 3–5 zones with compatible indoor units.
42,000 BTU/h cool 36,000 BTU/h heat 3–5 zones SEER2 22 · EER2 12.0 HSPF2 9.5 · COP2 3.60 R454B 208–230V 1Ph 5–125 °F cool · −4–75 °F heat
Why pros choose this outdoor
- Multi-zone capacity: serves 3 to 5 independent zones.
- High output: 42k BTU cooling with inverter efficiency.
- Cold-weather heat: heating operation rated to −4 °F.
- Extended piping: up to 82 ft per run, 262 ft total.
At-a-glance
Model
OS-RMS42-230VO
OS-RMS42-230VO
Zones
3–5
3–5
Efficiency
SEER2 22 · EER2 12.0 · HSPF2 9.5
SEER2 22 · EER2 12.0 · HSPF2 9.5
Sound
64 dB(A)
64 dB(A)
What’s included
- Outdoor unit OS-RMS42-230VO
- Owner/installation documentation
Use only with compatible OLMO Multi-Sierra indoor units. Observe MCA/max-fuse, line sizes, and total length limits.
Tech specs
| Spec | Details |
|---|---|
| Model | OS-RMS42-230VO |
| Zones supported | 3–5 independent zones |
| Cooling / Heating capacity | 42,000 / 36,000 BTU/h |
| SEER2 / EER2 | 22.0 / 12.0 |
| HSPF2 / COP2 | 9.5 / 3.60 W/W |
| Power | 208–230 V, 1-Phase, 60 Hz |
| Voltage range | 187–253 V |
| MCA / Max fuse | 36 A / 60 A |
| Outdoor airflow (Hi) | 3,357 CFM |
| Outdoor sound | 64 dB(A) |
| Unit size (W×H×D) | 38-3/8 × 32-7/8 × 14-1/8 in |
| Packing size (W×H×D) | 43-3/4 × 37-3/4 × 18-1/8 in |
| Net / Gross weight | 172 / 194 lb |
| Refrigerant / Charge | R454B / 105.8 oz |
| Line sizes (liq/gas) | 1/4″ / 3/8″ |
| Max pipe length (each / total) | 82 ft / 262 ft |
| Operating range (cool / heat) | 5–125 °F / −4–75 °F |
Documents
Important
Install by a licensed HVAC professional. Register within 60 days. Verify indoor mix, branch accessories if required, MCA/max-fuse, pipe lengths, and ambient limits.
FAQs
How many zones can this support?
Three to five independent zones when matched with compatible OLMO Multi-Sierra indoor units.
What line sizes are required?
1/4″ liquid and 3/8″ gas per specification.
What are the power requirements?
208–230 V, single-phase, 60 Hz. MCA 36 A. Max fuse 60 A.
What are the piping limits?
Up to 82 ft per run and 262 ft total, within system design limits.
