Pioneer Multi-Zone Matching Table (2025 A2L Edition)
Use the below table to locate compatible configurations for Pioneer Multi-Zone System Setups. Due to the complexity of potential combinations, it is recommended to utilize this reference guide on desktop.
Allowable Zone Combinations for Multi-Circuit Systems
Use this table to configure the multi-zone system that fits your project and ensure best compatibility. Pioneer also offers pre-made kits that bundle commonly ordered configurations together on one easy-to-use product page.
Note that "Circuit" refers to the maximum number of zones that can be connected to the outdoor unit. Not all circuits must be put to use however - It's common to leave 1 or 2 circuits unused such that the outdoor unit can reserve more capacity for the connected zones (e.g. using a 4-circuit 36K BTU system connected with only two 18K BTU indoor units effectively results in a stronger dual zone system)
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Outdoor Unit Model Number
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YN020GLSI24M2G |
YN030GLSI24M3G |
YN040GLSI24M4G |
YN050GLSI24M5G |
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Number of Available Zones / Circuits
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2 |
3 |
4 |
5 |
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BTU Capacity (Cooling / Heating)
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18,000 / 20,000 |
27,000 / 28,000 |
35,000 / 36,000 |
42,000 / 42,000 |
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Two Zones Utilized (kBTU)
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9 + 9 12 + 9 12 + 12 18 + 9 |
9 + 9 12 + 9 18 + 9 24 + 9 12 + 12 18 + 12 18 + 18 24 + 12 |
9 + 9 12 + 9 18 + 9 24 + 9 12 + 12 18 + 12 18 + 18 24 + 12 24 + 18 24 + 24 |
9 + 9 12 + 9 18 + 9 24 + 9 12 + 12 18 + 12 24 + 12 18 + 18 24 + 18 24 + 24 |
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Three Zones Utilized (kBTU)
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N/A |
9 + 9 + 9 12 + 9 + 9 18 + 9 + 9 18 + 12 + 9 12 + 12 + 12 |
9 + 9 + 9 12 + 9 + 9 18 + 9 + 9 24 + 9 + 9 12 + 12 + 9 12 + 12 + 12 18 + 12 + 9 24 + 12 + 9 18 + 12 + 12 24 + 12 + 9 18 + 18 + 9 24 + 12 + 12 |
9 + 9 + 9 12 + 9 + 9 18 + 9 + 9 24 + 9 + 9 12 + 12 + 9 12 + 12 + 12 18 + 12 + 9 24 + 12 + 9 18 + 12 + 12 24 + 12 + 9 18 + 18 + 9 24 + 18 + 9 24 + 12 + 12 18 + 18 + 12 24 + 18 + 12 18 + 18 + 18 24 + 18 + 18 24 + 24 + 12 |
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Four Zones Utilized (kBTU)
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N/A |
N/A |
9 + 9 + 9 + 9 12 + 9 + 9 + 9 18 + 9 + 9 + 9 12 + 12 + 9 + 9 12 + 12 + 12 + 9 18 + 9 + 9 + 9 18 + 12 + 9 + 9 |
9 + 9 + 9 + 9 12 + 9 + 9 + 9 18 + 9 + 9 + 9 24 + 9 + 9 + 9 12 + 12 + 9 + 9 18 + 12 + 9 + 9 18 + 18 + 9 + 9 24 + 12 + 9 + 9 24 + 18 + 9 + 9 12 + 12 + 12 + 9 18 + 12 + 12 + 9 18 + 18 + 12 + 9 24 + 12 + 12 + 9 24 + 18 + 12 + 9 12 + 12 + 12 + 12 18 + 12 + 12 + 12 18 + 18 + 12 + 12 24 + 12 + 12 + 12 18 + 18 + 12 + 12 18 + 18 + 18 + 9 |
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Five Zones Utilized (kBTU)
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N/A |
N/A |
N/A |
9 + 9 + 9 + 9 + 9 12 + 9 + 9 + 9 + 9 18 + 9 + 9 + 9 + 9 24 + 9 + 9 + 9 + 9 12 + 12 + 9 + 9 + 9 18 + 12 + 9 + 9 + 9 24 + 12 + 9 + 9 + 9 18 + 18 + 9 + 9 + 9 12 + 12 + 12 + 9 + 9 18 + 12 + 12 + 9 + 9 12 + 12 + 12 + 12 + 9 18 + 12 + 12 + 12 + 9 12 + 12 + 12 + 12 + 12 |
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Compatible Wall-Mounted Indoor Units
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Compatible Ceiling-Mounted Indoor Units
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Compatible Floor-Mounted Indoor Units
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UT018 (18K BTU) (Also Ceiling-Mountable) |
Note:
- Different models of all available matching indoor units can be combined together in any order to create a multi zone split system, up to a quantity of the number of available circuits.
- Not all available circuits need to be utilized with an attached indoor unit. 66% or higher of the total capacity utilization is recommended.
- Every indoor unit attached to a multi zone system will operate at a random, self-regulated capacity, based on the actual demand it measures from the zone it is serving (Between 30% to 100% of its rated capacity) or turn OFF as needed.
- Outdoor units will also self-regulate their total output capacity, based on the total demand it reads from all of the simultaneously running indoor units at any given moment, up to its maximum rating capacity.
- With multi-split systems, the total demand from the outdoor unit, will seldomly exceed 75% of the total available capacity of the combined Indoor unit group due to load fluctuations of each indoor unit.
- Therefore, total attached indoor unit capacity can be selected up to 133% of the supporting outdoor unit's rated capacity.
- Although very seldom, if the total demand from the combined group of indoor units exceeds the rated capacity of the outdoor unit, the capacity of each indoor unit will be attenuated accordingly.
- For high demand applications, max loading limits may need to be reduced up to 20% to avoid underperformance risks during some extreme conditions.
- The BTU order of attached indoor units has no effect on performance.