3D Connexion mD4000-b User Manuals

Table of Contents

• Economizer Failure Alarm

  16
• Dirty Filter Alarm

  16
• Shipping Damage

  4
• 2-Compressor Run Alarm

  16
• General

  4
• Theory of Operation

  4
• 2nd Stage Cooling Alarm

  17
• Controller Certifications

  4
• Refrigerant Pressure Alarms

  17
• Spyder Economizer Displays

  17
• MD4000 Controller

  5
• Emergency Ventilation Sequence

  17
• Programming Instructions

  20
• Installation Instructions

  5
• Two Optional Sensor Inputs

  5
• Using Multiple Sensors

  5
• — — — MD4000 Flow Chart

  10
• MD4000 Controller Connections

  6
• Series) A/C w/ECONWMT Econ

  14
• Unit #1 & Unit #2 Terminal Block

  6
• MD4000-B & -BC w/Controller Alarms

  7
• Board & CB4000 Comm. Board

  15
• — — — Alarm LED Display Board

  16
• Circuitry in the MD4000

  7
• Earth ground

  7
• Closed "NC" Open-On-Alarm Strategy

  18
• Time Delay on Power-Up

  7
• "NO" Close-On-Alarm Strategy

  19
• — — — MD4000 Label

  21
• Disabling the MD4000

  8
• Figure 5 Parts List Description Diagram

  22
• Stages 1 - 4

  8
• Various Blower Options

  8
• Manual Switching of Units

  8
• Controller Prog. Features & Defaults

  9
• Table 1 Hook-Up Diagram Selection

  14
• Testing the Timer Function

  8
• Table Parts List

  23
• Buttons & Function

  9
• Heating Sequence of Operation

  10
• CB4000 Communications Board

  11
• Refer to Connection Diagram

  13
• Locking and Unlocking the MD4000

  13
• Standby Generator Disable Operation

  13
• Input Connections Available

  13