A boilerless steamer may still need a water supply and indirect drain. Compare the exact connected or manual-fill model, its installation manual and the approved kitchen layout before replacing equipment. Check filling, drainage, backflow protection and water-treatment compatibility separately; the word boilerless does not establish which connections can be removed.
Does boilerless mean the water and drain connections disappear?
No. Boilerless describes how the cooker makes steam, not a universal installation arrangement. EPA's WaterSense at Work: Commercial Steam Cookers, February 2025, distinguishes boiler-based steam generation from a reservoir heated inside a boilerless cooker. That reservoir can be filled automatically from a supply or manually by staff.
The exact model decides the connections. AccuTemp's Evolution electric installation manual MP4008-2508, Section 3.6, says its connected version needs water and access to a floor drain or sink for condensate and draining. Its connectionless version is manually filled and uses a collection pan while operating, cleaning and draining. The manufacturer's July 2026 E6 sheets identify these as separate connected and connectionless products.
Those are model examples. Do not remove a drain because an equipment advertisement, or a general efficiency guide, says boilerless. Obtain the selected model's equipment documents before changing the rough-in.
Which plumbing details should be compared before ordering?
Have the equipment provider and plumbing designer compare the old and proposed installation:
| Decision | Information to resolve |
|---|---|
| Filling | Automatic supply connection or staff filling, including access during service |
| Supply | Specified inlet, permitted temperature and pressure, shutoff and backflow protection |
| Drainage | Actual outlets, collection method, discharge conditions and approved receptor |
| Treatment | The selected model's written water requirements and prohibited arrangements |
| Other connections | Electrical, steam-exhaust and service-access requirements coordinated with the responsible trades |
For the connected Evolution example, Section 3.9 requires an indirect drain arrangement and warns against directly plumbing the steamer to the drain. It also specifies supply protection according to the applicable codes. Have the designer reconcile those instructions with the authority's requirements; a manufacturer's check-valve reference does not decide every site's required device.
Our commercial indirect-waste guide explains the separate drainage question. An existing receptor's presence does not establish that the new discharge arrangement is acceptable.
Should the existing water treatment stay in place?
Check compatibility before reconnecting it. The same AccuTemp manual states that three-stage reverse-osmosis filtration systems are not permitted for these Evolution models because they cause water-system errors. That model-specific restriction is a reason to read the actual manual, not a rule against RO for every cooker.
A commercial kitchen treatment plan should match measured water and each machine's instructions. Do not assume a previous boiler's treatment train belongs on its replacement, or that low-mineral water guarantees better operation or warranty coverage.
Who should review the change and complete the handoff?
Maricopa County's Environmental Health Code, Chapter VIII Section II Regulation 2, requires revised approval before work affected by a material change to approved plans begins. Ask whether the proposed replacement changes those plans and which local plumbing or other trade approvals apply. Use the equipment substitution checklist to document the decision.
Coordinate plumbing work with qualified equipment and electrical providers. Record the installed model, approved connections, startup instructions and manual-fill or cleaning responsibilities. Retain the actual acceptance records. Removing a boiler does not itself establish that the replacement kitchen installation is ready to operate.