Air Handling Units
Datasheet constraints: every range, checkbox and listbox field now states its direction
Showing changes from Rev 8
to Rev 9
in Air Handling Units.
---
title: Air Handling Units
…122 unchanged lines
- "Control device schedule with terminal designations"
default: ["Unit configuration drawing with weights and service clearances", "Certified fan curve with the design point plotted", "Fan energy index with calculation basis", "Octave band fan sound power levels", "Motor data with efficiency and inverter-duty rating", "Coil selection data for each coil", "Filter data for each stage", "Casing construction details", "Damper schedule with leakage class and actuator data", "Drain pan drawings", "Vibration isolation data with static deflection", "Electrical schematic and wiring diagram", "Control device schedule with terminal designations"]
+constraint: all_of
```
…28 unchanged lines
- "Warranty documentation correlated to serial numbers"
default: ["Operation and maintenance manuals indexed by unit tag", "As-built configuration drawings", "Certified factory test report for each unit", "Signed startup report for each unit", "Installed filter media record with installation dates", "Air balance report", "Warranty documentation correlated to serial numbers"]
+constraint: all_of
```
…16 unchanged lines
- "Pre-existing condition record for restored surfaces"
default: ["Rigging and setting plan before shipment", "Field service reports during the warranty period", "Field hydrostatic test certification for coils"]
+constraint: all_of
```
…5 unchanged lines
```datasheet
−label: Minimum Manufacturer Experience
+label: Manufacturer Experience
type: range
unit: years
…3 unchanged lines
step: 1
default: 5
+constraint: min
```
…18 unchanged lines
- "Damper leakage licensed to bear the AMCA seal"
default: ["Supply fan performance certified under AHRI 430", "Coil performance certified under AHRI 410", "Fan aerodynamic performance licensed to bear the AMCA seal"]
+constraint: all_of
```
…58 unchanged lines
step: 100
default: deferred
+constraint: exact
```
…14 unchanged lines
step: 1
default: deferred
+constraint: exact
```
…8 unchanged lines
step: 1
default: deferred
+constraint: exact
```
…8 unchanged lines
step: 1
default: deferred
+constraint: exact
```
…16 unchanged lines
step: 100
default: deferred
+constraint: exact
```
…8 unchanged lines
step: 100
default: deferred
+constraint: exact
```
```datasheet
−label: Minimum Outdoor Airflow
+label: Outdoor Airflow
type: range
unit: cfm
…4 unchanged lines
step: 100
default: deferred
+constraint: min
```
### For variable-air-volume units, the fan shall operate stably and without surge, stall, or audible instability from design airflow down to the minimum airflow indicated in the datasheet.
```datasheet
−label: Minimum Controlled Airflow as a Percentage of Design
+label: Lowest Controlled Airflow as a Percentage of Design
type: range
unit: '%'
…4 unchanged lines
step: 5
default: deferred
+constraint: max
```
…14 unchanged lines
step: 0.05
default: deferred
+constraint: exact
```
…10 unchanged lines
max: 25
step: 5
+constraint: exact
```
…107 unchanged lines
```datasheet
−label: Minimum Fan Energy Index at Design Airflow
+label: Fan Energy Index at Design Airflow
type: range
options:
…2 unchanged lines
step: 0.05
default: 1
+constraint: min
```
…61 unchanged lines
setpoints: [115, 208, 230, 460, 480, 575, 600]
default: deferred
+constraint: exact
```
…18 unchanged lines
setpoints: [0.25, 0.5, 0.75, 1, 1.5, 2, 3, 5, 7.5, 10, 15, 20, 25, 30, 40, 50, 60, 75, 100, 125, 150, 200, 250]
default: deferred
+constraint: exact
```
…54 unchanged lines
```datasheet
−label: Minimum Fan Bearing Rated Life
+label: Fan Bearing Rated Life
type: range
unit: hours
…3 unchanged lines
setpoints: [40000, 50000, 80000, 100000, 150000, 200000]
default: 200000
+constraint: min
```
…93 unchanged lines
```datasheet
−label: Minimum Casing Panel Thermal Resistance
+label: Casing Panel Thermal Resistance
type: range
unit: hr·ft²·°F/Btu
…2 unchanged lines
max: 20
step: 0.5
+constraint: min
```
…48 unchanged lines
max: 16
step: 1
+constraint: min
```
…210 unchanged lines
setpoints: [150, 200, 250, 300, 400, 600]
default: 250
+constraint: min
```
### The maximum cooling coil fin spacing shall be as indicated in the datasheet.
```datasheet
−label: Maximum Cooling Coil Fin Spacing
+label: Cooling Coil Fin Spacing
type: range
unit: fins per inch
…3 unchanged lines
step: 1
default: 12
+constraint: max
```
…28 unchanged lines
step: 1
default: deferred
+constraint: exact
```
…8 unchanged lines
step: 1
default: deferred
+constraint: exact
```
```datasheet
−label: Maximum Cooling Coil Fluid-Side Pressure Drop
+label: Cooling Coil Fluid-Side Pressure Drop
type: range
unit: ft w.g.
…2 unchanged lines
max: 45
step: 1
+constraint: max
```
…15 unchanged lines
```datasheet
−label: Maximum Cooling Coil Face Velocity
+label: Cooling Coil Face Velocity
type: range
unit: fpm
…3 unchanged lines
step: 10
default: 500
+constraint: max
```
…29 unchanged lines
step: 5
default: deferred
+constraint: exact
```
…8 unchanged lines
step: 5
default: deferred
+constraint: exact
```
…399 unchanged lines
max: 80
step: 1
+constraint: exact
```
…30 unchanged lines
```datasheet
−label: Minimum Energy Recovery Effectiveness
+label: Energy Recovery Effectiveness
type: range
unit: '%'
…3 unchanged lines
step: 5
default: 50
+constraint: min
```
…116 unchanged lines
```datasheet
−label: Minimum Drain Pan Slope
+label: Drain Pan Slope
type: range
unit: in. per ft
…3 unchanged lines
setpoints: [0.125, 0.25, 0.375, 0.5]
default: 0.125
+constraint: min
```
…63 unchanged lines
```datasheet
−label: Minimum Isolator Static Deflection
+label: Isolator Static Deflection
type: range
unit: in.
…2 unchanged lines
max: 4
setpoints: [0.25, 0.35, 0.75, 1, 1.5, 2, 2.5, 3, 4]
+constraint: min
```
…119 unchanged lines
- "Duct high static pressure switch"
default: ["Supply air temperature sensor", "Return air temperature sensor", "Mixed air temperature sensor", "Filter differential pressure device at each stage", "Fan status by differential pressure switch", "Low-limit temperature device", "Duct high static pressure switch"]
+constraint: all_of
```
…15 unchanged lines
- "No duct smoke detection furnished with the unit"
default: ["Supply air, downstream of the filters and the supply fan"]
+constraint: all_of
```
…75 unchanged lines
- "Controls point-to-point verification"
default: ["Fan airflow and static pressure at the design operating point", "Motor current at the design operating point", "Vibration measurement at the fan and motor bearings", "Drain pan water hold test", "Damper stroke and fail-position test", "Coil pressure test", "Electrical continuity and insulation resistance test"]
+constraint: all_of
```
…18 unchanged lines
max: 8
setpoints: [0.25, 0.5, 1, 2, 4, 8]
+constraint: min
```
…172 unchanged lines
- "Trend review over a seasonal period"
default: ["Manufacturer startup with a signed report", "Point-to-point verification of every control device", "Functional performance testing of the control sequences", "Verified trip of every safety device at its setpoint", "Verification of drain pan drainage during operation", "Integrated testing with the fire alarm system"]
+constraint: all_of
```
…19 unchanged lines
step: 1
default: 10
+constraint: max
```
…53 unchanged lines
setpoints: [1, 2, 3, 5, 10]
default: 1
+constraint: min
```
…7 unchanged lines
setpoints: [0, 1, 2, 3, 5]
default: 1
+constraint: min
```
…25 unchanged lines
setpoints: [1, 2, 3, 5, 10]
default: 1
+constraint: min
```
…7 unchanged lines
setpoints: [1, 2, 3, 5, 10]
default: 1
+constraint: min
```
…37 unchanged lines
- "One spare control sensor of each type installed"
default: ["One complete set of filters of every type and size installed", "One complete set of drive belts for every belt-driven fan", "One set of every fuse type installed"]
+constraint: all_of
```
…7 unchanged lines
### The operation and maintenance manual shall include a filter change schedule derived from the initial and change-out resistances stated in the submittal.