HVAC Sound Attenuators
Datasheet constraints: every range, checkbox and listbox field now states its direction
Showing changes from Rev 3
to Rev 4
in HVAC Sound Attenuators.
---
title: HVAC Sound Attenuators
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- Space sound level calculation for each scheduled criterion
- Shop drawings with dimensions, weight, and flow direction
+constraint: all_of
```
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- Laboratory accreditation body, number, and scope
- Flame spread and smoke developed index data
+constraint: all_of
```
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- Operation and maintenance data with permitted cleaning methods
- Executed manufacturer's warranty
+constraint: all_of
```
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- Sound power division at branch takeoffs
- Room absorption effect at the receiver
+constraint: any_of
```
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- Rectangular elbow with absorptive turning baffles
- Transfer-duct attenuator
+constraint: any_of
```
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setpoints: [0.5, 1, 2, 3, 4, 6, 10]
default: derived
+constraint: min
```
…135 unchanged lines
```datasheet
−label: Minimum Fibrous Media Density
+label: Fibrous Media Density
type: range
unit: lb/ft³
min: 1.5
max: 8
setpoints: [1.5, 2, 3, 4, 6, 8]
+constraint: min
```
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setpoints: [2000, 3000, 4000, 5000, 6000, 8000]
default: 4000
+constraint: min
```
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setpoints: [1, 2, 3, 5, 10]
default: 1
+constraint: min
```
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## Spare media modules shall be delivered in the manufacturer's sealed packaging, labelled with the attenuator tag and model they serve, and turned over to the Owner before the date of Substantial Completion.