ROOM ACooling demand
Water-coil cooling
The water coil provides cooling. The heat pump can contribute additional output under the selected sequence.
For consulting engineers & technical teams
Engineering
independent comfort.
Transform existing two-pipe buildings with a focused change at the room level. PerFitTech brings the equipment, controls, and engineering together in one coordinated modernization package.
The room-level interventionPMAC / PAFMAC
Fan coil + water-source heat pumpOne terminal. Independent heating and cooling.
PMAC manufacturer image · ceiling configuration shown.
PMAC manufacturer image · ceiling configuration shown.
Focused intervention
Almost everything stays.Small changes.
Massive impact.
Preserve the building’s two-pipe infrastructure and concentrate the transformation where comfort is delivered. We engineer the room-level equipment, connections, and controls into a revolutionary alternative to conventional four-pipe upgrades.
Preserve / Distribution
The existing two-pipe network.
Keep the supply and return infrastructure. Coordinate local connections, flow, and balancing around the new terminals.
Preserve / Central infrastructure
The plant you already have.
Engineer around existing chilled- and hot-water generation, with plant and loop adjustments defined in the project scope.
Preserve / Operating continuity
A building that stays in business.
Plan room-by-room modernization around occupied operations, delivering the upgrade without business disruption.
Precision where
the change happens.
The engineering work turns a focused intervention into a repeatable installation package, coordinated with the owner’s engineer, facilities team, and installation trades.
All two-pipe buildings qualify.Assessment defines configuration, retained and replaced components, delivery, and commercial scope.
01Room loads & equipment selection
- Room-by-room sensible and latent loads, orientation, occupancy, and diversity.
- Heating and cooling capacity in each operating mode at the project’s loop conditions.
- Floor, ceiling, or vertical configuration; airflow, acoustics, and enclosure requirements.
Design output: Room-type equipment schedule and selection criteria.
02Hydronics & existing distribution
- Supply and return temperatures, operating range, and reset strategy.
- Available flow, pressure loss, pumping, branch connections, isolation, and balancing.
- Water quality, flushing, strainers, air removal, and retained system components.
Design output: Hydronic criteria and local connection details.
03Electrical & equipment protection
- Selected-model voltage, phase, frequency, circuit ampacity, and overcurrent protection.
- Existing feeders, panel capacity, disconnects, and local wiring requirements.
- Pump interlock, protective shutdown, and coordination with life-safety interfaces.
Design output: Electrical requirements and protection schedule.
04Installation, access & condensate
- Equipment envelope, piping handedness, removal path, finish, and service clearances.
- Drain routing, slope, traps, insulation, and overflow response.
- Room access, installation sequence, and repeatable details for phased delivery.
Design output: Room installation details and phasing plan.
05Ventilation, humidity & acoustics
- Outdoor air, exhaust, pressurization, and humidity control beyond the room terminal.
- Acoustic targets, vibration isolation, and architectural coordination.
- Applicable energy, refrigerant, fire, and accessibility requirements.
Design output: Coordinated performance and project requirements.
06Controls, pilot & commissioning
- Sequence of operation, interlocks, points list, alarms, and supervisory integration.
- Representative pilot rooms where appropriate, with comfort, acoustics, and installation acceptance criteria.
- Commissioning procedures, operator training, handover, and ongoing service coordination.
Design output: Controls narrative and commissioning package.
The PerFitTech system
A completely
connected package.
PMAC, the in-room thermostat and dual-sensor wireless network, and local and cloud servers work together as one PerFitTech package—from individual room comfort to property-level operating intelligence.
Room equipment
PMAC
The hybrid fan coil and heat pump deliver room-level heating and cooling through the existing water loop.
Room interface
Thermostat
The room’s comfort command point brings temperature sensing, setpoints, and occupant interaction together.
Connected sensing
Sensors & network
The dual-sensor wireless network connects room conditions to the property’s control and operating strategy.
Operating intelligence
Local & cloud
Local and cloud servers support property-wide visibility, data collection, analytics, and connected service.
Define the behavior.
Coordinate every interface.
Room sequencesSetpoints, deadbands, fan behavior, occupancy response, and compressor protection.
Interlocks & alarmsWater circulation, drain safety, protective shutdowns, and actionable fault reporting.
Property integrationCommands, status, trends, permissions, and the required BMS or PMS interfaces.
CommissioningVerify room operation, communications, alarm routing, and operator handover.
Protocol support and available points are defined for the selected controller and gateway. The project’s controls narrative establishes BACnet, Modbus, BMS, and PMS integration requirements.
Technical resources
The detail you need.
Direct from the source.
Useful manufacturer guidance for understanding operation and coordinating a design. PerFitTech brings the selected equipment and integration details together for your project.
PDF / 12 pagesPMAC USA
PAFMAC technical brochure
Operating principles, product families, floor-unit reference data, and installation guidance.
Operating guidePMAC USA
System & operating diagrams
How the water coil and heat pump respond to loop conditions and room demand.
Controls guidePMAC USA
Controller reference
Local modes, thermostat interfaces, pump interlock, reporting, and protective functions.
Looking for a specific equipment configuration?
Manufacturer reference data is model- and market-specific. Use current project submittals for final capacities, dimensions, electrical requirements, controls, and equipment selection.