Merlin Controls
The controls package, sold as the product.
A field-installable controls package that integrates with any AHU's installed EC fan array. The Control Panel and QCB are the product. Sold standalone, not bundled with fans or a bulkhead.
Controls are the fan array.
Merlin Air builds the controls package the rest of the industry treats as an afterthought. EC fan arrays for commercial HVAC, engineered from the brain outward.
Two products, one philosophy
Sold as a controls package. Sold as a complete fan array.
Merlin Fan Array
The complete system, factory-tested.
Control Panel, QCB, custom bulkhead, and your choice of EC fan from seven manufacturers, assembled, tested, and shipped as a single product. Specified by engineers. Installed by contractors who will thank you later.
What makes Merlin different
Built in. Not bolted on.
A2L-ready, by design.
The industry is moving to A2L refrigerants. Merlin's two Override inputs are built around A2L compatibility: not retrofitted, not promised in a future revision. Every Pro and Elite controls package ships A2L-ready today; UL 60335-2-40 listing is in progress for all three tiers.
Your fans, our brain.
Ziehl-Abegg, EBM-Papst, Delta, Greenheck, Rosenberg, Swiss Rotors, Infinitum. Specify the fan that fits your application, not the one your controls vendor's catalog forced on you.
Built for the conditions you actually work in.
IP54-rated plug connections at the QCB. Resettable MMPs co-located in the QCB, right at the AHU, not back at the controls cabinet. Two-level safety circuit. The kind of details you only engineer in after the third service call.
Three tiers, one philosophy
Same hardware. Different brains.
No tier compromises on durability. Every Merlin Controls package ships with the same QCB, IP54 plugs, and resettable MMPs. The tiers change what's above the brain stem.
Feature
Essentials
Pro
Elite
Hardware foundation (QCB, IP54 plugs, MMPs)
✓
✓
✓
HOA bypass + Potentiometer
✓
✓
✓
PLC + native BACnet MS/TP
–
✓
✓
Seven control modes
–
✓
✓
HMI on cabinet door
–
Basic
Touchscreen
Custom I/O
–
–
✓
Status
Shipping
Shipping
Coming Soon
A glimpse of the controls
The system, drawn out.
Seven control modes
Manual, Constant Speed, Constant CFM, Constant Local Static, Constant Duct Static, plus ECO mode and Maximum CFM limiting as overlays.
Two-level safety architecture
High-priority series chain for thermal, freeze, and door safeties. Separate low-priority circuit for fire alarm. Both auto-reset on restore.
Per-fan diagnostics
15 alarm categories exposed per fan, up to 30 fans, native over BACnet MS/TP. Your BMS sees what's actually wrong, not just that something is.
merlinair.com / selectionsMockup
Configure New System
Fan System
Control Panel
Tag Name
AHU-1 Supply
Working Point
Airflow (CFM)
20,000
Static Pressure (in.wg)
1.5
Panel
Control Type
Pro▾
Rating
Type 1 (Indoor)▾
Power
Supply
460V 3~▾
Cancel
Create System
Now live · selection software
The Merlin Selection Software.
Spec your controls package or full fan array in minutes: fan brand, array geometry, performance, tier, and pricing. Wiring diagrams and IOM documentation included.
Live at selections.merlinair.com · access by request
Buying for an OEM, specifying a project, or installing a system? Find your local Merlin rep, or reach us directly.
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