Honeywell Economizers 63-8594-02 i
Table of Contents
Section 1 - Ventilation ...................................................................................1
Indoor Air Quality ...............................................................................................................................................................2
Building-Related Illness .....................................................................................................................................................3
Symptoms of Inadequate Ventilation .................................................................................................................................4
Indoor Air Ventilation Standards .........................................................................................................................................5
CO
2
Based Demand Control Ventilation .................................................................................................................5
Energy Standards ..............................................................................................................................................................6
Ventilation Requirements .................................................................................................................................................7
Air Handler Control Loops ..................................................................................................................................................9
Basic Economizer Control ................................................................................................................................................10
Mixed Air Formulas .......................................................................................................................................................... 11
Outside Air Percentage Chart ..........................................................................................................................................12
Example 1: Using the Outside Air Percentage Chart ............................................................................................13
Example 2: Use of Outside Air Chart on a Warm Day ..........................................................................................14
Extra Outside Air Percentage Chart ......................................................................................................................15
Example 3: Minimum Ventilation Adjustment ........................................................................................................16
Example 4: Ventilation Review Questions .............................................................................................................18
Economizer Cycle Definition ............................................................................................................................................20
Single and Two Stage Cooling With Economizer ..................................................................................................21
Section 2 - Enthalpy Theory And Controllers ...........................................23
The Psychrometric Chart .................................................................................................................................................24
Relative Humidity and Saturation .....................................................................................................................................25
Enthalpy ...........................................................................................................................................................................26
Psychrometric Chart of Enthalpy Economizer Control ..........................................................................................27
Single Sensor Enthalpy Control .......................................................................................................................................28
Two Sensor or Differential Enthalpy .................................................................................................................................29
Enthalpy Control with Carbon Dioxide Sensor .................................................................................................................30
Section 3 - Types of Analog Economizers ................................................31
H705 ................................................................................................................................................................................32
W7459 .............................................................................................................................................................................33
W6210 and W7210 ..........................................................................................................................................................34
W6215, W7215 and W7460 .............................................................................................................................................35
W7212, W7213 and W7214 .............................................................................................................................................36
W7340 and W7345 ..........................................................................................................................................................37
Analog Economizer Features ...........................................................................................................................................38
Transformer Wiring Requirements for Analog Economizers ............................................................................................39
Section 4 - H705 Economizer Module ........................................................41
H705 Economizer Module ................................................................................................................................................42
H705 Components ...........................................................................................................................................................43
H705 Enthalpy Setpoint ...................................................................................................................................................44
H705 Wiring Diagram .......................................................................................................................................................45
Section 5 - M7XXX Black Motor ..................................................................49
M7215, M7415, M7405 and M8405 Actuators .................................................................................................................50
To Next Page
Need help?
General
