AHU-02 South Wing

Air Handling Unit · Trane M-Series Climate Changer · Rooftop South · Riverside Office Complex

Condition — Last 14 Days

Peak Vibration
2.8mm/s
Avg while running 2.6 mm/sStaticDev
Peak Filter ΔP
67Pa
StaticDev
Peak Bearing Temp
58.7°C
StaticDev
Energy
432kWh
138 run-hours
Alarms
0
None unresolved

Electrical Demand

15-minute power draw, kW — last 14 days

VibrationStaticDev

15-minute readings, mm/s RMS — last 14 days

Air Temperatures

Supply air vs. outdoor air, °C — last 14 days

Zone CO₂StaticDev

Worst zone, ppm — last 14 days

Nameplate & Ratings

Asset ID
AHU-02
Asset type
Air Handling Unit
Manufacturer
Trane
Model
M-Series Climate Changer
Rated motor
7.5 kW
Rated airflow
8,000 CFM
Served zones
2
Heat-recovery wheel
Yes
CHW coil design flow
47 GPM
HW coil design flow
36 GPM
Installed
Jun 15, 2019
Last major service
Nov 20, 2025

Fault History

F-HIGH-STATICTRIP
Jun 3, 2026, 2:15 p.m. · cleared Jun 3, 2026, 3:15 p.m.

Supply duct high-static safety tripped. Static at trip: 457 Pa. Filter DP: 259 Pa.

F-FILTER-DIRTYWARNING
May 21, 2026, 4:45 p.m. · cleared Jun 6, 2026, 9:00 a.m.

Filter differential pressure exceeded warning threshold (250 Pa). Current: 250 Pa. Service filter bank.

F-VALVE-HUNTWARNING
Feb 10, 2026, 9:00 a.m. · cleared Feb 13, 2026, 4:00 p.m.

Hot-water valve hunting - coil flow oscillating ~28% around demand at 15-minute period; discharge air temperature unstable (±2.5 C around setpoint). Control loop requires retuning.

F-LOW-DATWARNING
Jan 21, 2026, 10:30 a.m. · cleared Jan 21, 2026, 11:15 a.m.

Discharge air temperature 4 C below setpoint during cold-snap morning warm-up (OA -9.4 C). Hot-water coil at full flow. Self-recovered as coil load stabilized.

F-FREEZE-STATTRIP
Jan 21, 2026, 6:45 a.m. · cleared Jan 21, 2026, 9:45 a.m.

Freeze-stat tripped on morning start during cold snap (OA -13.9 C). Mixed-air temp fell below 4 C limit - OA damper actuator found stuck partially open.

F-LOW-DATWARNING
Jan 20, 2026, 9:00 a.m. · cleared Jan 20, 2026, 9:40 a.m.

Discharge air temperature 4 C below setpoint during cold-snap morning warm-up (OA -11.4 C). Hot-water coil at full flow. Self-recovered as coil load stabilized.

F-LOW-DATWARNING
Jan 20, 2026, 7:45 a.m. · cleared Jan 20, 2026, 8:15 a.m.

Discharge air temperature 5.5 C below setpoint during cold-snap morning warm-up (OA -12.1 C). Hot-water coil at full flow. Self-recovered as coil load stabilized.

F-LOW-DATWARNING
Jan 20, 2026, 6:30 a.m. · cleared Jan 20, 2026, 7:05 a.m.

Discharge air temperature 5.6 C below setpoint during cold-snap morning warm-up (OA -12.4 C). Hot-water coil at full flow. Self-recovered as coil load stabilized.

Service History

FILTER CHANGE$245.00
CorrectiveJun 6, 2026, 9:00 a.m. · M. Lavoie · 25 min downtime

Triggered by: F-HIGH-STATIC — High-static trip F-HIGH-STATIC (2026-06-03); filter DP warning active since 2026-05-22

Emergency Saturday call-out following high-static trip. Replaced primary MERV-13 filter bank. Pre-change DP 262 Pa (rated max 250 Pa). Coil inspection clean.

ERW SEAL SERVICE$680.00
Condition-basedApr 10, 2026, 9:00 a.m. · M. Lavoie · 120 min downtime

Triggered by: Condition monitoring: energy-wheel sensible effectiveness trending down 70% -> ~56% (action level 62%)

Energy-recovery wheel brush seals replaced and matrix cleaned. Post-service sensible effectiveness restored to ~70% (design).

CONTROLS TUNING$290.00
CorrectiveFeb 13, 2026, 4:00 p.m. · S. Whitfield · 0 min downtime

Triggered by: F-VALVE-HUNT — Hot-water valve hunting alarm F-VALVE-HUNT (2026-02-10)

HW valve PI loop retuned (proportional gain halved, integral time doubled); valve stroke verified smooth 0-100%. Discharge air temperature stable within ±1 C after tuning.

ACTUATOR REPAIR$410.00
CorrectiveJan 21, 2026, 10:00 a.m. · M. Lavoie · 180 min downtime

Triggered by: F-FREEZE-STAT — Freeze-stat trip F-FREEZE-STAT (2026-01-21)

Freeze-stat trip callout. OA damper actuator linkage seized partially open in -16 C conditions. Linkage freed, lubricated, actuator stroke re-verified. Freeze-stat reset.