AAON MHGRVX-A2 Technical Guide

Name: AAON MHGRVX-A2
Brand: AAON
Rating: 4 (1 reviews)

35 pages

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MHGRVX-A2 Module

Field Technical Guide

Designed to work exclusively with Sanhua EBV05H reheat valves

Table of Contents3
Overview5
MHGRVX-A2 General Information5
Figure 1: MHGRVX-A2 Dimensions5
Wiring6
Installation and Wiring6
Table 1: MHGRVX-A2 Electrical and Environmental Requirements6
MHGRVX-A2 to AAON Unit Controller Wiring7
Figure 2: MHGRVX-A2 to AAON Unit Controller Wiring7
MHGRVX-A2 Stand-Alone Wiring8
Figure 3: MHGRVX-A2 Stand-Alone Wiring8
Inputs and Outputs9
Inputs9
Table 2: MHGRVX-A2 Inputs and Outputs9
Outputs10
Operation Modes11
Modes of Operation11
Additional Features13
Lcd Screens14
Navigation Keys14
Figure 4: LCD Display and Navigation Keys14
Table 3: Navigation Key Functions14
Main Screens Map and Main MHG REHEAT Screens15
Status and Alarm Screens16
Setpoint and Force Valves Screens17
Protected Screens18
Troubleshooting21
LED Diagnostics21
Table 4: STATUS LED Blink Codes21
Table 5: ALARM LED Blink Codes21
Alarms22
Figure 5: MHGRVX-A2 LED Locations and Descriptions22
Other Checks23
Table 6: 0-3V Temperature Sensor - Voltage and Resistance for Type III Sensors23
Table 7: 0-5V Temperature Sensor - Voltage and Resistance for Type III Sensors24
Appendix A: Sat Sensor25
Supply Air Temperature Sensor Installation25
Figure 6: Supply Air Temperature Sensor Installation25
SAT Sensor Wiring Guide and Jumper Settings26
Table 8: SAT Wiring Conditions26
Appendix B: Compatibility27
MHGRVX Series Drop-In Replacement27
Appendix C: Reheat Expansion Module28
Features and Dimensions28
Figure 7: Reheat Expansion Module Dimensions28
Installation and Wiring29
Wiring30
Figure 8: Reheat Expansion Module(S) Wiring30
Operation Modes31
Table 9: Reheat Expansion Module ALARM LED Blink Codes31
LED Diagnostics and Troubleshooting32
Figure 9: Reheat Expansion LED Locations and Descriptions32
Appendix D: Frequently Asked Questions33
Troubleshooting33

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Field Technical Guide35 pages

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AAON MHGRVX-A2 Specifications

General

Brand	AAON
Model	MHGRVX-A2
Category	Control Unit
Language	English

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AAON MHGRVX-A2 Technical Guide

Table of Contents

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AAON MHGRVX-A2 Specifications

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