AAON RSMD Technical Manual

RSMD

Technical Guide

TABLE OF CONTENTS

OVERVIEW ....................................................................................................................................... 4

Features and Applications ........................................................................................................................................ 4

Module Dimensions ................................................................................................................................................. 5

INSTALLATION & WIRING ............................................................................................................... 6

Input Wiring .............................................................................................................................................................. 6

Suction Pressure Sensor ....................................................................................................................................6

Head Pressure Sensor ....................................................................................................................................... 6

Compressor Discharge Temperature Sensors ....................................................................................................6

Output Wiring ...........................................................................................................................................................7

Modulating Compressor ...................................................................................................................................... 7

Condenser Fan Signal ........................................................................................................................................7

INPUTS & OUTPUTS ....................................................................................................................... 8

SEQUENCE OF OPERATIONS ........................................................................................................ 10

Cooling Mode ......................................................................................................................................................... 10

Dehumidifi cation Operation .................................................................................................................................... 10

Head Pressure Control .......................................................................................................................................... 11

AAON/WattMaster Controls Inc.
8500 NW River Park Drive · Parkville, MO 64152
Toll Free Phone: [phone]
PH: [phone] · FAX: [phone] ·
E-mail: [e-mail]
Visit our web site at www.orioncontrols.com
Copeland Digital Scroll™ is a registered trademark
of Copeland Corporation, Sidney, OH

2

www.aaon.com

WattMaster Form: AA-RSMD-TGD-01D
Copyright April 2018 WattMaster Controls, Inc.
AAON Part Number: V87380

®

is a registered trademark of AAON, Inc., Tulsa, OK.

AAON
Neither WattMaster Controls, Inc. nor AAON® assumes any
responsibility for errors or omissions in this document.
This document is subject to change without notice.

RSMD Technical Guide

TABLE OF CONTENTS

RSMD LCD SCREENS .................................................................................................................... 12

RSMD Main Screens Map ..................................................................................................................................... 13

RSMD Module Screens ......................................................................................................................................... 13

System Status Screens ..........................................................................................................................................14

Sensor Status Screens .......................................................................................................................................... 15

Setpoint Status Screens ........................................................................................................................................ 16

Alarms Screen and Defi nitions ............................................................................................................................... 17

Alarm History Screen .............................................................................................................................................18

Protected Screens Map ......................................................................................................................................... 18

Confi guration Screens ........................................................................................................................................... 19

Diagnostics Screens .............................................................................................................................................. 19

Alarm Count Screen ...............................................................................................................................................21

Address Screen ..................................................................................................................................................... 21

TROUBLESHOOTING ..................................................................................................................... 22

LED Diagnostics .................................................................................................................................................... 22

OE275-01 Suction Pressure Transducer Testing for R410A .................................................................................. 23

Copeland

Leaving Water Temperature Sensor Testing .......................................................................................................... 25

Head Pressure Transducer Troubleshooting .........................................................................................................26

®

Discharge Thermistor Temperature Sensor Testing ............................................................................. 24

APPENDIX: CONDENSER CONFIGURATION OPTIONS ................................................................ 27

Two Condenser Per RSMD .................................................................................................................................... 28

One Condenser Per RSMD ................................................................................................................................... 30

One Condenser Per 2 RSMDs ...............................................................................................................................32

One Condenser Per 3 RSMDs ...............................................................................................................................34

Two Condensers Per 2 RSMDs ............................................................................................................................. 36

On/Off Condenser Options..................................................................................................................................... 39

RSMD Technical Guide

3

OVERVIEW

RSMD Overview

Features & Applications

The OE370-26-RSMD Refrigerant System Module for Digital
Compressors (RSMD) (AAON Part No: V61520) can monitor and
control up to two compressors and condensers. The compressors can
be in either a tandem or non-tandem confi guration. The module is
designed for R410-A refrigerant.

The RSMD is connected to the VCC-X / VCCX2 Controller.
Up to 4 RSMD’s can be connected, depending on the size of the
system. There are 2 E-BUS Expansion Ports which allow the use of
communicating sensors and the E-BUS Modules.

The RSMD provides 3 analog inputs, 4 binary inputs, 5 relays, and
2 analog outputs. See Figures 2 & 3, pages 6 & 7 for wiring.

The RSMD Module provides the following:

• Modulates the Compressors to satisfy the Suction
Coil (Saturated) Temperature. The Suction Coil (Satu­ rated) Temperature Setpoint is reset by the VCC-X /
VCCX2 Controller to maintain the Supply Air
Temperature during Cooling mode. During Dehumidi­ fi cation mode, it controls the Compressors to the
Suction (Saturation) Temperature Setpoint.

• In Heating mode, the RSMD modulates and stages
the compressors to maintain a given Supply Air
Temperature Setpoint.

• Modulates the Condenser Fan or Valve to maintain
the Head Pressure Setpoint.

• Provides alarms and safeties for the Compressor and
Condenser operation.

• Allows connection of the Modular Service Tool SD
to the module when required communication wire is
run to the VCC-X / VCCX2 Controller.

• Provides a 2 x 8 LCD character display and 4 buttons

that allow for status of system operation, system
setpoints, system con gurations, sensors, and alarms,
and to change the module’s address, if necessary.

4

RSMD Technical Guide

OVERVIEW

M

ENTER

UP

DOWN

ALARM

MENU

OE370-26-RSMD

RSM FOR DIGITAL

COMPRESSORS

AAON No.: V61520

+24 VAC

GND

RELAYCONTACT
RATING IS 1AMP

MAX @ 24 VAC

CONDENSER 1

COMP 1
COMP 2

ANALOG OUTPUTS

REVERSING VALVE

COMMON

RELAYOUTPUT

TERMINALS

www.aaon.com

WattMaster Overlay
# 000072 Rev1DSW

CONDENSER 1
CONDENSER 2

GND

24 VAC

POWER ONLY

WARNING!

POLARITY

MUST BE

OBSERVED

OR THE

CONTROLLER

WILLBE

DAMAGED

CONDENSER 2

SUCTION

PRESSURE 1

SENSOR

HEAD

PRESSURE 1

SENSOR

TEMP

SENSORS

BINARY
INPUTS

+5 V

+5 V

COMP DIS TEMP1

COMP STATUS 1

SP-1

HP-1

COMP DIS TEMP2

COMP 2STATUS

GND

GND

OUTSIDE COILTEMP / POWF
EMERGENCY SHUTDOWN
GND

LEAVING WATERTEMP
GND

SUCTION

PRESSURE 2

SENSOR

HEAD

PRESSURE 2

SENSOR

+5 V

+5 V

SP-2

HP-2

GND

GND

R+

SHD

T-

HH COMMUNICATIONS

E-BUS

R+ SHD T-

DUAL E-BUS
EXPANSION

RSMD Dimensions

G5Q-1A4

OMRON

DC12V

CHINA

10A250VAC~

5A30VDC

SA

VDE

Figure 1: RSMD Dimensions

RSMD Technical Guide

5

WIRING

M

ENTER

UP

DOWN

ALARM

MENU

OE370-26-RSMD

RSM FOR DIGITAL

COMPRESSORS

AAON No.: V61520

+24 VAC

GND

RELAY CONTACT
RATING IS 1AMP

MAX @ 24 VAC

CONDENSER 1

COMP 1
COMP 2

ANALOG OUTPUTS

REVERSING VALVE

COMMON

RELAY OUTPUT

TERMINALS

www.aaon.com

WattMaster Overlay
# 000072 Rev1DSW

CONDENSER 1
CONDENSER 2

GND

24 VAC

POWER ONLY

WARNING!

POLARITY

MUST BE

OBSERVED

OR THE

CONTROLLER

WILL BE

DAMAGED

CONDENSER 2

SUCTION

PRESSURE 1

SENSOR

HEAD

PRESSURE 1

SENSOR

TEMP

SENSORS

BINARY
INPUTS

+5 V

+5 V

COMP DIS TEMP 1

COMP STATUS 1

SP-1

HP-1

COMP DIS TEMP 2

COMP 2STATUS

GND

GND

OUTSIDE COIL TEMP / POWF
EMERGENCY SHUTDOWN
GND

LEAVING WATER TEMP
GND

SUCTION

PRESSURE 2

SENSOR

HEAD

PRESSURE 2

SENSOR

+5 V

+5 V

SP-2

HP-2

GND

GND

R+

SHD

T-

HH COMMUNICATIONS

E-BUS

R+ SHD T-

DUAL E-BUS

EXPANSION

RSMD Inputs Wiring

RSMD Wiring

The RSMD monitors and controls one refrigeration circuit of the
HVAC unit. The module is designed for R410-A refrigerant.

The RSMD is connected to the VCC-X or VCCX2 Controller.
Up to 4 RSMD’s can be connected, depending on the size of the
system. There are 2 E-BUS Expansion Ports which allow the use of
communicating sensors and the E-BUS Modules.

The RSMD provides 3 analog inputs, 4 binary inputs, 5 relays, and
2 analog outputs. See Figure 2, below for inputs wiring and Figure
3, page 7 for outputs wiring.

Suction Pressure Sensor Wiring

The OE275-01 Suction Pressure Transducers must be wired as
shown in Figure 2, below. It is typically required for all VCC-X /
VCCX2 applications.

The Suction Pressure Sensors are used to measure suction pressure
at the HVAC unit’s DX evaporator coil suction line. This suction
line pressure is converted to saturated refrigerant temperature.
The saturated refrigerant temperature is used to properly control
the compressors to maintain a given Suction Coil (Saturated)
Temperature Setpoint. In Cooling mode, the VCC-X / VCCX2 resets
the Suction Coil (Saturated) Temperature Setpoint to maintain a
given supply air temperature setpoint. In Dehumidifi cation mode, the
Suction Coil (Saturated) Temperature Setpoint is a user confi gurable
setpoint that can be reset based on indoor humidity levels.

OE370-26-RSMD

RSM FOR DIGITAL

COMPRESSORS

SUCTION PRESSURE 1

SENSOR

RD
WH

BK

HEAD PRESSURE 1

SENSOR

(BY OTHERS)

SUCTION PRESSURE 2

SENSOR

HEAD PRESSURE 2

SENSOR

(BY OTHERS)

RD
WH

BK

RD
WH

BK

RD
WH

BK

COMP STATUS 1

COMP STATUS 2

OUTSIDE COIL TEMP/POWF

COMP. DISCHARGE

TEMP. 1 SENSOR

COMP. DISCHARGE

TEMP. 2 SENSOR

Figure 2: RSMD Inputs Wiring

6

LEAVING WATER

TEMP SENSOR

EMERGENCY SHUTDOWN

+V
SP

GND

+V

HP

GND

+V
SP

GND

+V

HP

GND

BIN1

BIN2

BIN3

BIN4

GND

TEMP 1

TEMP 2

TEMP 3

GND

Size Transformer For
Correct Total Load.
RSMD = 18 VA

RSMD Technical Guide

GND

Line Voltage

24VAC

G5Q-1A4

OMRON

DC12V

CHINA

10A250VAC ~

5A30VDC

SA

VDE

WIRING

M

ENTER

UP

DOWN

ALARM

MENU

OE370-26-RSMD

RSM FOR DIGITAL

COMPRESSORS

AAON No.: V61520

+24 VAC

GND

RELAY CONTACT
RATING IS 1AMP

MAX @ 24 VAC

CONDENSER 1

COMP 1
COMP 2

ANALOG OUTPUTS

REVERSING VALVE

COMMON

RELAYOUTPUT

TERMINALS

www.aaon.com

WattMaster Overlay
# 000072 Rev1DSW

CONDENSER 1
CONDENSER 2

GND

24 VAC

POWER ONLY

WARNING!

POLARITY

MUST BE

OBSERVED

OR THE

CONTROLLER

WILL BE

DAMAGED

CONDENSER 2

SUCTION

PRESSURE 1

SENSOR

HEAD

PRESSURE 1

SENSOR

TEMP

SENSORS

BINARY
INPUTS

+5 V

+5 V

COMP DIS TEMP 1

COMP STATUS 1

SP-1

HP-1

COMP DIS TEMP 2

COMP 2STATUS

GND

GND

OUTSIDE COIL TEMP / POWF
EMERGENCY SHUTDOWN
GND

LEAVING WATER TEMP
GND

SUCTION

PRESSURE 2

SENSOR

HEAD

PRESSURE 2

SENSOR

+5 V

+5 V

SP-2

HP-2

GND

GND

R+

SHD

T-

HH COMMUNICATIONS

E-BUS

R+ SHD T-

DUAL E-BUS
EXPANSION

RSMD Outputs Wiring

CAUTION: The Shraeder port used for installation of the

suction pressure transducer should be located in a vertical
position of the suction line to prevent refrigerant oil from
accumulating in the sensor.

NOTE: If there are two Compressors on a single circuit

(a tandem circuit), Suction Pressure 2, Head
Pressure 2, and Condenser Signal 2 would not be
used.

OE370-26-RSMD

RSM FOR DIGITAL

COMPRESSORS

CHINA

10A250VAC ~

5A30VDC

Head Pressure Control

The Head Pressure Transducers are used to measure Head Pressure at
the discharge line. This Head Pressure is used to drive the Condenser
Fans with a 0-10 VDC output signal or valve with a 2-10 VDC output
signal to maintain a given Head Pressure Setpoint.

Compressor Discharge Sensors

The Digital Compressor Discharge Temperature Sensor monitors
the discharge temperature from the Digital Compressor to protect
against overheating.

Leaving Water Temperature Sensor

The Leaving Water Temperature Sensor is used to measure the
Leaving Water Temperature when used on a WSHP unit.

NOTE:

ALL RELAY OUTPUTS ARE NORMALLY
OPEN AND RATED FOR 24 VAC POWER
ONLY - 1 AMP MAXIMUM LOAD

24 VAC ONLY

G5Q-1A4

OMRON

DC12V

SA

VDE

RLY1
RLY2

RLY3
RLY4
RLY5

COMM

UNLOAD

24 VAC

UNLOAD

AOUT1
AOUT2
GND

COMPRESSOR 1 ENABLE
COMPRESSOR 2 ENABLE
CONDENSER 1 ENABLE
CONDENSER 2 ENABLE

REVERSING VALVE

DIGITAL

COMPRESSOR 1

+

GND

DIGITAL

COMPRESSOR 2

+

GND

CONDENSER

SIGNAL 1

+

COM

CONDENSER

SIGNAL 2

+

COM

Connect to

VCC-X or

VCCX2 Controller

Figure 3: RSMD Outputs Wiring

RSMD Technical Guide

GND

Line Voltage

24VAC

Size Transformer For
Correct Total Load.
RSMD = 18 VA

Connects To VCC-X

or VCCX2 Loop

Communications

Connector When Used

On A Split System.

WSE BYPASS

VALVE ACTUATOR

1 COM

2 +

3Y1

Belimo Actuator Wiring
Shown. Consult Factory
For Other Manufacturer

Wiring Instructions

7

INPUTS & OUTPUTS

RSMD Input/Output Map

REFRIGERATION SYSTEM MODULE

FOR DIGITAL COMPRESSORS

Analog Inputs

1 Suction Pressure 1 Sensor (SP-1)

2 Head Pressure 1 Sensor (HP-1)

3 Suction Pressure 2 Sensor (SP-2)

4 Head Pressure 2 Sensor (HP-2)

Compressor Discharge Temperature Sensor 1

5

(TEMP1)

Compressor Discharge Temperature Sensor 2

6

(TEMP2)

7 Leaving Water Temperature Sensor (TEMP3)

Binary Inputs

1 Compressor Status 1 (BIN1)

2 Compressor Status 2 (BIN2)

Outside Coil Temperature / Proof of Water Flow

3

(BIN3)

4 Emergency Shutdown (BIN4)

Analog Outputs (0-10 VDC)

1 Condenser 1 Fan Signal (AOUT1)

Condenser 2 Fan Signal (0-10 VDC) or WSE

2

Bypass Actuator (2-10 VDC) (AOUT2)

Binary Outputs (24 VAC)

1 Compressor 1 Enable Relay (RLY1)

2 Compressor 2 Enable Relay (RLY2)

3 Condenser 1 Enable Relay (RLY3)

Zone

Zone

4 Condenser 1 Enable Relay (RLY4)

Table 1: RSMD Inputs & Outputs

8

RSMD Technical Guide

INPUTS & OUTPUTS

RSMD Inputs & Outputs

RSMD - Inputs & Outputs

+5V VDC Power

This output is a 5 VDC output that supplies power to the Suction
Pressure Transducers.

SP-1 & SP-2 - Suction Pressure Transducers

The Suction Pressure Sensors are used to measure suction pressure
at the HVAC unit’s DX evaporator coil suction line. This suction
line pressure is converted to saturated refrigerant temperature. The
saturated refrigerant temperature is used to properly control the
compressors to maintain a given Suction Coil (Saturated) Temperature
Setpoint. In Cooling mode, the VCC-X / VCCX2 resets the Suction
Coil (Saturated) Temperature Setpoint to maintain a given supply air
temperature setpoint. In Dehumidifi cation mode, the Suction Coil
(Saturated) Temperature Setpoint is a user confi gurable setpoint that
can be reset based on indoor humidity levels.

+5V VDC Power

This output is a 5 VDC output that supplies power to the Head Pres­sure Transducer.

HP-1 & HP-2 - Head Pressure Transducers

The Head Pressure Transducers are used to measure Head Pressure at
the discharge line. This Head Pressure is used to drive the Condenser
Fans to maintain a given Head Pressure Setpoint.

TEMP1 & TEMP2 - Compressor Discharge Tem­perature Sensor 1 & Sensor 2 Input

The Digital Compressor Discharge Temperature Sensors monitor
the discharge temperature from the Digital Compressor to protect
against overheating.

TEMP3 - Leaving Water Temperature Sensor Input

This input monitors the Condenser Leaving Water Temperature and
determines if the water source condenser is operating in a safe water
temperature range.

BIN1 - Compressor Status 1

When this wet contact input closes, a 24 volt signal to Binary Input
#1 indicates that Compressor 1 is running. Typically, the source for
this is relay output 1. If Binary Input 1 opens, Compressor 1 Enable
Relay will de-energize and a Compressor Alarm will be generated.

BIN2 - Compressor Status 2

When this wet contact input closes, a 24 volt signal to Binary Input
#2 indicates that Compressor 2 is running. Typically, the source for
this is relay output 2. If Binary Input 2 opens, Compressor 2 Enable
Relay will de-energize and a Compressor Alarm will be generated

BIN3 - Outside Coil Temperature / Proof of Water
Flow Status

This input can be used for the following two options:

Air to Air Heat Pump

This wet contact input monitors a Defrost Coil Temperature Switch
on air to air heat pump units. If the compressors are operating in the
Heating Mode and this switch closes, it will initiate a Defrost Mode.

Water Source Heat Pump

This wet contact input is for the Water Proof of Flow Switch. If
the Water Proof of Flow Switch contact opens while the Condenser
Valve is operating, the controller will react to protect the system
depending on the current mode of operation.

BIN4 - Emergency Shutdown

This wet contact input is used to initiate shutdown of the HVAC unit
when a N.C. Smoke Detector (by others), Firestat (by others), or other
shutdown condition (by others) contact is opened. The controller
remains active and can initiate alarm relays.

NOTE: The Binary Inputs require wet contacts (24 VAC

only) to recognize an active input. If you provide dry
contacts, the contact closure will not be recognized.

AOUT1 - Condenser Fan 1 Signal

This 0-10 VDC output is used to control/modulate the Condenser 1
Fan /Valve to maintain the Head Pressure Setpoint.

AOUT2 - Condenser Fan 2 Signal or Waterside
Economizer Bypass Actuator Valve

This 0-10 VDC output is used to control/modulate the Condenser
2 Fan /Valve to maintain the Head Pressure Setpoint or this output
signal is a Direct Acting 2-10 VDC output signal that is used to
modulate the Water Side Economizer Bypass Actuator.

RLY1 - Compressor 1 Enable

This relay enables the Compressor 1.

RLY2 - Compressor 2 Enable

This relay enables the Compressor 2.

RLY3 - Condenser 1 Enable

This relay enables the Condenser 1 Fan / Water Valve.

RLY4 - Condenser 2 Enable

This relay enables the Condenser 2 Fan / Water Valve.

.

RLY5 - Reversing Valve Enable

This relay enables the Reversing Valve.

RSMD Technical Guide

9

Zone

SEQUENCE OF OPERATIONS

Cooling Mode & Dehumidifi cation Operation

Zone

Cooling Mode Operation

In the Cooling Mode, as the Supply Air Temperature (SAT) rises
above the Active SAT Cooling Setpoint, the compressors will stage
on and modulate to maintain the Active Evaporator Coil Suction
(Saturated) Temperature Setpoint. Two compressors are controlled
per Refrigerant System Module (RSMD). Multiple RSMDs are
needed when there are more than two compressors

In units with one digital and one fi xed compressors, if the digital
compressor modulates to 100% and the SAT is still above the SAT
Cooling Setpoint for the Cooling Stage Up Delay, then the fi xed
compressor will stage on. The digital compressor will then be
allowed to modulate as necessary to maintain the Active Evaporator
Coil Suction (Saturated) Temperature Setpoint. Minimum off times
must also be met before compressors can stage on.

In units with multiple digital compressors, if the 1st digital
compressor modulates to 100% and the SAT is still above the SAT
Cooling Setpoint for the Cooling Stage Up Delay, then the 2nd digital
compressors will enable and the two digital Compressors will then
modulate together to maintain the Active Evaporator Coil Suction
(Saturated) Temperature Setpoint.

To stage down compressors, if the digital compressor(s) have
modulated down to 30% for the Stage Down Delay period and the
SAT has fallen below the SAT Cooling Setpoint minus the Stage
Control Window, then the last compressor to have staged on (digital
or Fixed) will stage off – assuming its Minimum Run Time has
been met. Any remaining digital compressors are then allowed to
modulate as needed. If the last remaining digital compressor reaches
0% for the Stage Down Delay, it will stage off .

Dehumidifi cation Operation

The RSMD activates the Cooling Stages based on the actual
Evaporator Coil Temperature compared to the Evaporator Coil
Suction (Saturation) Temperature Setpoint. The Evaporator Coil
Suction (Saturation) Temperature is calculated by using the Suction
Pressure Sensor and converting the pressure to temperature.

For Copeland Digital Scroll™ Compressor units, the RSMD will
modulate the Copeland Digital Scroll™ Compressor to maintain
the Evaporator Coil Suction (Saturation) Temperature Setpoint and
activate the Compressors as necessary.

On units that have one Digital and one Fixed Capacity Compressor,
if the Fixed Capacity Compressor is activated, the Copeland Digital
Scroll™ Compressor will only be allowed to modulate within the
range of 70% - 100% in order to prevent the loss of reheat capacity
during low load conditions. If, with both compressors on, the 1st
digital compressor has modulated down to its 70% minimum and
the Coil Suction Temperature falls below the Coil Temperature
Setpoint minus the Cooling Stage Control Window, then the second
compressor will stage off once its Compressor Minimum Run Time
and the Stage Down Delay Timers have been met. At that point, the
Copeland Digital Scroll™ Compressor can modulate down as needed
to maintain the Coil Temperature Setpoint.

If the RSMD has two Digital Compressors, the 1st Compressor will
be locked at 100% and the 2nd Compressor will modulate.

10

RSMD Technical Guide

SEQUENCE OF OPERATIONS

Head Pressure Control

The Refrigeration System Module for Digital Compressors (RSMD)
can monitor a Head Pressure Transducer and control a Condenser
Fan to maintain a Head Pressure Setpoint. The RSMD must be
confi gured for an Air Cooled Condenser.

A Condenser Relay is commanded on when the fi rst compressor is
enabled (except if the unit is in Heat Pump Defrost Mode). On an
Air Cooled Unit, the Condenser Fan will be controlled with 0-10
VDC output signal.

When the Condenser Signal fi rst activates, it maintains at 100% for
10 seconds.

In the Cooling Mode, the Condenser Signal will modulate to maintain
the Cooling Head Pressure Setpoint. The signal can modulate
between 15% and 100%. If the Head Pressure exceeds 550 PSIG,
the condenser control signal will immediately go to 100% and a
High Head Pressure Alarm will be generated. The alarm will be
deactivated when the Head Pressure drops below 540 PSIG.

Head Pressure Control

In the Dehumidifi cation Mode, the Condenser Output Signal controls
to the Reheat Head Pressure Setpoint. High Head Pressure conditions
produce the same eff ects as in the Cooling Mode.

If no Head Pressure Sensor is detected, the Condenser Output Signal
will be maintained at 100%.

RSMD Technical Guide

11

LCD SCREENS

LCD Display Screen & Navigation Keys

LCD Display Screen & Navigation
Keys

The LCD display screens and buttons allow you to view status and
alarms, and enable force modes. See Figure 4, below and refer to
Table 2 for descriptions.

Figure 4: LCD Display and Navigation Keys

NAVIGATION

KEY

MENU

UP

DOWN

ENTER

Use the MENU key to move through
screens within Main Menu categories and
return to the Main Menu while at other
screens.

Use this key to adjust setpoints and change
confi gurations.

Use this key to adjust setpoints and change
confi gurations.

Use the ENTER key to navigate through the
Main Menu Screen categories.

KEY FUNCTION

Table 2: Navigation Key Functions

12

RSMD Technical Guide