Ducted Unit Connection Dimensions and Static Pressure Reference
Quick reference for compatible indoor and outdoor units, external static pressure ranges, duct connection dimensions and optional connection kits.
Use this guide for:
- Pre-installation duct sizing and unit selection checks
- Replacement compatibility assessments
- External static pressure setup and commissioning
- Identifying applicable supply and return air connection kits
1. Overview
This reference covers the ARTG, ARTA, ARTC, ARXB, ARXA and ARXC ducted series. It summarises:
- Available static pressure modes
- Recommended external static pressure ranges
- Supply and return air connection dimensions
- Optional duct connection kits, including UTD-RF204 and UTD-SF045T
Use the information as a field installation and commissioning reference to support correct airflow matching and physical duct sizing.
2. ARTG High Static Ducted - Single Phase
| Indoor model | Outdoor model | Static modes | Pressure range | Supply air | Return air |
|---|---|---|---|---|---|
| ARTG45LDTA | AOTG45LBTA | 20 | 60-250 Pa | 1162 x 277 mm | 1295 x 316 mm |
| ARTG54LDTA | AOTG54LBTA | 20 | 60-250 Pa | 1162 x 277 mm | 1295 x 316 mm |
| ARTG60LDTA | AOTG60LBTA | 20 | 60-250 Pa | 1162 x 277 mm | 1295 x 316 mm |
Field application
- Suitable for high-static commercial duct applications.
- The available static range supports multiple branch duct layouts and increased filtration resistance.
- Confirm whether UTD-RF204 and UTD-SF045T are required for the proposed duct transition.
3. ARTC High Static Ducted - Three Phase
| Indoor model | Outdoor model | Pressure range | Supply air | Return air |
|---|---|---|---|---|
| ARTC72LATU | AOTA72LALT | 50-250 Pa | 1200 x 350 mm | 1251 x 370 mm |
| ARTC90LATU | AOTA90LALT | 50-250 Pa | 1200 x 350 mm | 1251 x 470 mm |
- Designed for larger commercial multi-room ducted systems.
- Three-phase supply and static pressure capability up to 250 Pa support longer duct runs.
- External control features may include Low Noise, Peak Cut and Error Output. Refer to the applicable service documentation.
4. ARTA Slimline Ducted - Single Phase
| Indoor model | Outdoor model | Pressure range | Supply air | Return air |
|---|---|---|---|---|
| ARTA30LBTU | AOTA30LBTL | 30-150 Pa | 1015 x 240 mm | 1015 x 240 mm |
| ARTA45LATU | AOTA45LBTL | 30-150 Pa | 1015 x 240 mm | 1015 x 240 mm |
These slimline indoor units are intended for restricted ceiling cavities and medium-static applications with comparatively short duct runs.
5. ARTG Bulkhead Ducted Units
| Indoor model | Outdoor model | Static range | Supply air | Return air |
|---|---|---|---|---|
| ARTG09LLLB | AOTG09LBCA | 0-90 Pa | 650 x 151 mm | Bulkhead |
| ARTG18LLTA | AOTG18LACC | 0-90 Pa | 850 x 151 mm | Bulkhead |
Field tip: Confirm condensate drain position and airflow direction against the ceiling cavity layout before installation.
6. VRF and Commercial Series
| Series | Unit type | Static range | Optional kits |
|---|---|---|---|
| ARXB | VRF bulkhead | 0-50 Pa | Confirm by model |
| ARXA | VRF slimline | 30-150 Pa | UTD-RF204 / UTD-SF045T |
| ARXC | VRF high static | 100-300 Pa | Confirm by model |
7. Service and Commissioning Checks
8. Quick Reference Summary
| Series | Type | Static range | Phase | Optional kits |
|---|---|---|---|---|
| ARTG | High static | 60-250 Pa | Single | UTD-RF204 / UTD-SF045T |
| ARTA | Slimline | 30-150 Pa | Single | UTD-RF204 / UTD-SF045T |
| ARTC | High static | 50-250 Pa | Three | UTD-RF204 / UTD-SF045T |
| ARXB | Bulkhead | 0-50 Pa | - | Confirm by model |
| ARXA | Slimline | 30-150 Pa | - | UTD-RF204 / UTD-SF045T |
| ARXC | High static | 100-300 Pa | - | Confirm by model |
Important: This article is a quick reference only. Confirm all model-specific dimensions, connection kits, function settings and commissioning requirements against the applicable installation or design and technical manual before commencing work.