Health Compliance Package – Zone air humidity is outside acceptable range

Objective/Method/Outcome

Objective: Determines if the zone air humidity is outside the set humidity for more than the acceptable time threshold.

Method: Checks if the zone humidity is outside the set value for more than 1.5 hours and determines an urgency score depending on the level of variation of humidity from the acceptable range and the amount of time it was outside of the range.

Outcome: Creates an insight and assigns an urgency score.

Applicable System

VAV, HP, FCU, UV, UH, RAD, RHT

Description

Ensure indoor humidity is within ASHRAE standard of comfort range.

This rule is part of the CopperTree Standard rule-set.

Default Priority

Low

Diagnosis

Verify sensor location.
Verify sensor has power.
Verify reading in BMS.
Replace if the sensor is broken.

Message

Zone humidity is outside the established comfort range.

Rule Template

Insight Type: Fault Detection

Trigger Type: Active High

Logic

Determines if zone humidity is outside acceptable range

Inputs

Input	Unit	Tags	Description
Zone Humidity	%	Room Humidity	The recorded zone temperature
Threshold – Comfort Impact	%		Upper limit of the impact of this rule on Building Comfort
Humidity Low Limit	%		Low Limit of humidity
Threshold – Max Humidity Out of Range	%		Maximum humidity out of range that can be used for calculating score
Threshold – Urgency Score	%		Maximum urgency score for rule
Occupancy		Room Occupied, Discharge Air Fan Status, Discharge Air Fan Command	Building occupancy
Humidity Min Limit	%		Minimum humidity out of range that is can be used for calculating score
Humidity High Limit	%		High limit of humidity range
Humidity Max Limit	%		Maximum humidity that is used for calculating score

Notes

Default Thresholds:

Humidity Low Limit: 30%
Humidity Min Limit: 5%
Humidity High Limit: 60%
Humidity Max Limit: 90%
Comfort Impact Insight Threshold: 30%
Urgency Score Insight Threshold: 30%
Urgency Score Maximum Threshold: 10%