Matching the Lineset Diameter to Your Pioneer Indoor UnitUpdated 19 days ago
Introduction
Use this lineset diameter selection guide for Pioneer HVAC mini-split and multi-zone systems. Match your indoor unit to the correct lineset diameter using the tables below.
For single-zone systems, the connection diameter for the indoor and outdoor units will be the same.
For multi-zone equipment, the connection diameter is typically 1/4 to 3/8 inches for the first three valve sets, and 1/4 to 1/2 inches for valve sets 4 and 5.
Wall-Mounted Units
| Series | Model Number | Gas | Liquid |
| Diamante Essenza High-Wall (WYT-17) | WYT012ALUI17RL | 3/8" | 1/4" |
| WYT012GLUI17RL | 3/8" | 1/4" | |
| WYT018GLUI17RL | 3/8" | 1/4" | |
| WYT024GLUI17RL | 1/2" | 1/4" | |
| WYT036GLUI17RL | 5/8" | 1/4" |
| Series | Model Number | Gas | Liquid |
| Diamante Essenza High-Wall (WYT-20U) | WYT009ALUI20RL | 3/8" | 1/4" |
| WYT009GLUI20RL | 3/8" | 1/4" | |
| WYT012ALUI20RL | 3/8" | 1/4" | |
| WYT012GLUI20RL | 3/8" | 1/4" | |
| WYT018GLUI20RL | 3/8" | 1/4" | |
| WYT024GLUI20RL | 1/2" | 1/4" | |
| WYT030GLUI20RL | 5/8" | 1/4" | |
| WYT036GLUI20RL | 5/8" | 1/4" |
| Series | Model Number | Gas | Liquid |
| Diamante Pro High-Wall (WYT-20S) | WYT009ALSI20RL | 3/8" | 1/4" |
| WYT009GLSI20RL | 3/8" | 1/4" | |
| WYT012ALSI20RL | 3/8" | 1/4" | |
| WYT012GLSI20RL | 3/8" | 1/4" | |
| WYT018GLSI20RL | 3/8" | 1/4" | |
| WYT024GLSI20RL | 1/2" | 1/4" | |
| WYT030GLSI20RL | 5/8" | 1/4" | |
| WYT036GLSI20RL | 5/8" | 1/4" |
| Series | Model Number | Gas | Liquid |
| Quantum Ultra High-Wall (WYT-24) | WYT009ALSI24RL | 3/8" | 1/4" |
| WYT009GLSI24RL | 3/8" | 1/4" | |
| WYT012ALSI24RL | 3/8" | 1/4" | |
| WYT012GLSI24RL | 3/8" | 1/4" | |
| WYT018GLSI24RL | 1/2" | 1/4" | |
| WYT024GLSI24RL | 5/8" | 1/4" |
| Series | Model Number | Gas | Liquid |
| Quantum Hyperformance High-Wall (WYT-25) | WYT009GLSI25RH | 3/8" | 1/4" |
| WYT012GLSI25RH | 3/8" | 1/4" | |
| WYT018GLSI25RH | 1/2" | 1/4" | |
| WYT024GLSI25RH | 5/8" | 1/4" |
| Series | Model Number | Gas | Liquid |
| Quantum Fresh High-Wall (WYT-FA) | WYT012GLUI25FV | 3/8" | 1/4" |
Ceiling Cassette Units
| Series | Model Number | Gas | Liquid |
| Quantum Ultra 8-Way Ceiling Cassette (CYT-24) | CYT009GLSI24RL | 3/8" | 1/4" |
| CYT012GLSI24RL | 3/8" | 1/4" | |
| CYT018GLSI24RL | 1/2" | 1/4" | |
| CYT024GLSI24RL | 5/8" | 1/4" |
| Series | Model Number | Gas | Liquid |
| Quantum Ultra 4-Way Ceiling Cassette (CYB-20) | CYB036GMSI20RL | 3/4" | 3/8" |
| CYB048GMSI20RL | 3/4" | 3/8" |
Ducted Ceiling Concealed Units
| Series | Model Number | Gas | Liquid |
| Quantum Ultra Ducted Ceiling Concealed (RYT-24) | RYT009GLSI24RL | 3/8" | 1/4" |
| RYT012GLSI24RL | 3/8" | 1/4" | |
| RYT018GLSI24RL | 1/2" | 1/4" | |
| RYT024GLSI24RL | 5/8" | 1/4" |
| Series | Model Number | Gas | Liquid |
| Quantum Ultra Slim-Duct Ceiling Concealed (RYB-20) | RYB036GMSI20RL | 3/4" | 3/8" |
| RYB048GMSI20RL | 3/4" | 3/8" |
Ducted Central Split Units
| Series | Model Number | Gas | Liquid |
| Quantum Ultra Ducted Central Split (DYC-18) | DYC024GCSI18RD | 3/4" | 3/8" |
| DYC036GCSI18RD | 3/4" | 3/8" | |
| DYC048GCSI18RD | 7/8" | 3/8" | |
| DYC060GCSI18RD | 7/8" | 3/8" |
Floor/Ceiling/Low-Wall Flex Units
| Series | Model Number | Gas | Liquid |
| Quantum Ultra Universal Flex (UYT-24) | UYT018GLSI24RL | 1/2" | 1/4" |
| UYT024GLSI24RL | 5/8" | 1/4" |
| Series | Model Number | Gas | Liquid |
| Quantum Ultra Universal Flex (UYB-20) | UYB036GMSI20RL | 3/4" | 3/8" |
| UYB048GMSI20RL | 3/4" | 3/8" |
Floor/Low-Wall Mounted Console Units
| Series | Model Number | Gas | Liquid |
| Quantum Ultra Floor-Mounted Console (FYB-24) | FYB012GMSI24RL | 3/8" | 1/2" |
| FYB018GMSI24RL | 1/4" | 1/4" |
Multi-Zone Units
| Series | Model Number | Gas | Liquid |
| Multiple Size Adapters Provided | |||
| Quantum Ultra Multi-Zone (YNL-24) | YN020GLSI24M2G | 3/8" (1/2" for 18,000 BTU adapters and 5/8" for 24,000 BTU adapters) | 1/4" |
| YN030GLSI24M3G | 1/4" | ||
| YN040GLSI24M4G | 1/4" | ||
| YN050GLSI24M5G | 1/4" | ||
| YN060GLSI24M6G | 1/4" | ||
One-Way Ceiling Cassette Units
| Series | Model Number | Gas | Liquid |
| Quantum Ultra One-Way Ceiling Cassette (CYK-24) | CYK009GMSI24RL | 3/8" | 1/4" |
| CYK012GMSI24RL | 3/8" | 1/4" | |
| CYK018GMSI24RL | 1/2" | 1/4" |