Procurement guides
How to check multi-split combination tables
A multi-split system is a defined combination. Neither a shared brand nor the sum of reference sizes confirms that combination. A verifiable enquiry therefore lists every unit and the system conditions.
1. Identify the outdoor unit precisely
Start with the full outdoor-unit reference. SCM50ZS-W and SCM60ZS-W are documented for two to three indoor units, SCM71ZS-W for two to four. This narrows the search but does not approve particular indoor models or establish room capacity.
2. Record indoor models and simultaneous demand
List type, full model, quantity and required capacity for each room. The contractor assesses simultaneous loads and manufacturer-approved combinations. Nominal outdoor capacity must not be evenly assigned to rooms as guaranteed output.
3. Match approval to project conditions
Use combination and installation documents for the exact offered references. Record open points before approving the parts list. For replacement or extension, include every already connected model.
- Permitted indoor models and connection conditions
- Project piping lengths and height differences
- Efficiency of the actual combination and climate reference
Worked example: Read a reference row for MXZ-2F53VF
On page 16 of Mitsubishi Electric manual OBH790, 5.3 kW rated cooling and 6.4 kW rated heating for MXZ-2F53VF-E1/ET1 refer to MSZ-LN18VG + MSZ-LN35VG. Read the footnote alongside the capacity row. For other indoor models, use the matching manufacturer combination and performance data.
- For a parts-list enquiry, provide the exact outdoor unit, every planned indoor unit and the intended pipe lengths. Flag any combinations still to be checked.
Open relevant models directly
Open the product details for suitable models. Complete sets and individual outdoor units are labelled separately. We help you select a compatible combination for extensions.
Mitsubishi Heavy Industries · Individual outdoor unit
SCM50ZS-WMitsubishi Heavy Industries · Individual outdoor unit
SCM60ZS-WMitsubishi Heavy Industries · Individual outdoor unit
SCM71ZS-WMitsubishi Electric · Individual outdoor unit
MXZ-2F53VF
Frequently asked questions
- Why is there no general SCOP for an outdoor unit alone?
- System efficiency depends on the approved indoor combination and reference conditions. A value for one configuration must not be presented as a property of every system using that outdoor unit.
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