Hilton Grand Vacations Suites Las Vegas on Paradise
Offering the comforts of home with the proximity of the strip, the Hilton Grand Vacations Suites Las Vegas near the convention center is the tranquility away from the lights. This non-gaming resort offers spacious studios to two-bedroom suites catering to business, leisure and family travelers.
The hotel engaged AirRevive to refurbish and re-commission 726 guest room vertical fan coil units that were manufactured in 1998.
Fan Coil Units Manufacturer: Williams
Project Scope of Work: Guest room vertical fan coil unit refurbishment, valve replacement and EC motor retrofit.
Challenges: The main project challenge was to bring the existing overblowing fan coil units back to manufacturer’s specification. Prior to service, 81% of the guest room fan coil units’ airflow was above 700 CFM on high setting. High airflow and old insulation resulted in noise. Valves were faulty.
- Coil temperature averaged 56℉.
- 73% of the unit’s coil temperature was above 53℉.
- 96% of the living room fan coil units were not operating as designed with airflow outside of the manufacturer’s specification curve – 540-660 CFM on high fan setting.
- 24% of the living room guestroom fan coil unit’s airflow was 50% above manufacturer’s design specifications – 900 CFM on high fan setting.
- 88% of the bedroom and studio fan coil units were not operating as designed with airflow outside of the manufacturer’s specification curve – 500-600 CFM on high fan setting.
- 45% of the bedroom and studio guestroom fan coil unit’s airflow was 50% above manufacturer’s design specifications – 825 CFM on high fan setting.
- 15% of fan coil unit’s sound decibels was above 60 decibels which is the acceptable industry standard.
Solution: AirRevive restored the cabinet, replaced valve and actuator assembly on an as needed basis, and rejuvenated the coils. The refurbishment service, primarily the control valve replacement and coil rejuvenation, resulted in an 11% coil temperature drop. Once coils were cleaned, disinfected and working uniformly, AirRevive retrofit the fan motors with EC motors. The EC motor retrofit solution included programming the EC motors to supply airflow consistent with the unit specifications, room area, and building nuances; and installing motor and controller.
- Coil temperature dropped by 6℉ from an average of 56℉ to 50℉.
- Sound reduced by 13% or 7.2 decibels from an average of 58.2 dB to 51 dB.
- Living room fan coil unit’s average airflow is at the target 600 CFM on high fan setting.
- Bedroom and studio guestroom fan coil unit’s average airflow is at the target 550 CFM on high fan setting.
Before & After Airflow Data
The graphs below display the two unit types’ before and after airflow on high fan setting. The red line from left to right demonstrates the airflow before service from high to low ranged from 1150 CFM to 500 CFM. The blue line demonstrates the airflow after service is within the manufacturer’s design target. The horizontal axis represents the room numbers.
Before & After Supply Temperature Data
The graph below displays before and after supply temperature. The red line from left to right demonstrates the supply temperature before service from high to low ranged from 75 degrees to 51 degrees. The blue line demonstrates the supply temperature after service. The horizontal axis represents the room numbers.