E - HVAC Fundamentals in measureQuick
System View: Interactive Thermal Cycle Visualization
What You'll Learn How to access System View from both mQ Classic and mQ+ What each component in the visualization represents and how to read it How live probe measurements drive the animation in real time What tapping each component reveals about the ...
Combustion Analysis Fundamentals
What You'll Learn What a combustion analyzer measures: CO, CO2, O2, stack temperature, draft pressure, flue gas velocity, and manifold pressure How to interpret CO readings and the action thresholds: 0-25 ppm normal, 26-100 ppm investigate, 100+ ppm ...
Differential Pressure in Charging
What You'll Learn Why the pressure your manifold reads differs from the pressure at the system's service valve How hose length, hose diameter, and refrigerant flow create pressure drop between the gauge and the system When differential pressure ...
Airflow: CFM per Ton
What You'll Learn What CFM per ton means and why 400 CFM/ton is the standard design target The acceptable range of 350-450 CFM/ton and what happens outside it How low CFM/ton affects humidity, efficiency, coil temperature, and comfort How high ...
TESP Budget & 140% Rule
What You'll Learn How to decompose TESP into a component-level budget: filter, coil, supply ductwork, and return ductwork What expected pressure drop ranges are for each component in a typical residential system How to take the additional ...
TESP: Furnace vs Air Handler
What You'll Learn Where to place manometer probes on a furnace with an A/C coil vs a standalone air handler Why the measurement locations differ between equipment types How to find the rated maximum TESP on equipment data plates What "internal" vs ...
Total External Static Pressure (TESP)
What You'll Learn What Total External Static Pressure is and how it relates to airflow through the system How measureQuick measures and calculates TESP from two measurement points What the rated maximum TESP means on equipment datasheets Why 70%+ of ...
Adjustable Parameters in measureQuick
What You'll Learn Which system profile parameters you can adjust and where to find each one in the app How Design Airflow (CFM/ton) changes diagnostic targets based on climate and duct design How SEER rating drives CTOA (Condensing Temperature Over ...
Recognizing Overcharge and Undercharge
What You'll Learn The specific data patterns that indicate overcharge and undercharge on piston (fixed orifice) systems The specific data patterns that indicate overcharge and undercharge on TXV (thermostatic expansion valve) systems Why the primary ...
Charge and Airflow Balance
What You'll Learn Why refrigerant charge and airflow are interdependent and cannot be diagnosed in isolation How the "Magic Pot" analogy explains the relationship between charge and airflow How low airflow mimics overcharge symptoms and high airflow ...
Pre-Calculation: Expected Targets
What You'll Learn How to calculate expected superheat and subcooling targets before deploying probes How target superheat for piston systems is derived from outdoor dry bulb temperature and return air wet bulb temperature How target subcooling for ...
Design Temperature Difference (DTD)
What You'll Learn What Design Temperature Difference (DTD) is and how it applies to both the evaporator and condenser sides How measureQuick uses the SEER-to-CTOA 4-bucket system to set condenser-side DTD targets Why higher-efficiency systems have ...
Superheat & Subcooling in measureQuick
What You'll Learn How measureQuick calculates superheat and subcooling from your probe data Which metric to target based on the metering device type in your system profile How target superheat is derived from outdoor ambient and return air wet bulb ...
Pressure-Temperature Relationship
What You'll Learn How the saturation curve (P/T relationship) works and why each refrigerant has a different one How measureQuick uses your refrigerant selection and pressure readings to calculate condensing and evaporating temperatures Why selecting ...
Refrigeration Cycle Basics
What You'll Learn How each stage of the refrigeration cycle maps to specific measureQuick measurement fields Which mQ columns store pressures, temperatures, and calculated values for each cycle stage How the app derives condensing temperature, ...