Getting Started

Display

Keypad menu item list

Abr.

Description

RO

05

Default

RW1

 

 

 

 

 

 

 

o5

Exhaust Interlock OAD

EOAD

Adjust OA damper position above which the exhaust fan output will be energized.

RW

x

99%

Min Position set point

There is a fixed –5% differential associated with this set point.

o6

Energize Exhaust Fan

OADE

Adjust OA damper minimum position when the exhaust interlock input is

RW

x

12%

OAD Set point

energized.

o7

pointOAD Max Position Set

OAMX

Adjust OA damper maximum position.

RW

x

99%

o8

OAD Lockout Enable

 

Set OA damper lockout feature status: 0 = disable, 1 = enable. (This variable is

RW

x

0

 

factory set to 1 when the unit is ordered as a recirc unit with no OAD.)

 

 

 

 

 

 

o9

 

 

Adjust OA temperature below which the OA damper closes if the OA damper

 

 

35.6°F

OAD Lockout Set point

OALS

lockout is enabled. (This variable is factory set to –99°C when the unit is ordered

RW

x

(2°C)

 

 

 

as a recirc unit with no OAD.)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

E1

Economizer Enable

 

Set economizer status: 0 = disable, 1 = enable.

RW

x

1

E2

Economizer OA Temp

ETS

Adjust economizer OA temperature set point. DO NOT lower this set point below

RW

x

68°F

Set point

CCLO or you risk creating a deadband where no cooling occurs.

(20°C)

E3

DifferentialEconomizer IA/OA Temp

ETD

Adjust economizer IA/OA temperature differential.

RW

x

1.8°F (1°C)

E5

Economizer OA Enthalpy

EES

Adjust economizer OA enthalpy set point.

RW

x

25 Btu/lb

Set point

(58 kJ/kg)

E6

Economizer IA/OA

EED

Adjust economizer IA/OA enthalpy differential.

RW

x

1.3 Btu/lb

Enthalpy Differential

(3 kJ/kg)

r1

Space Humidity Output

ERH

Display room humidity (optional). 00 = No sensor connected.

RO

x

 

r3

OutputOutdoor Air Humidity

EORH

Display OA humidity (optional). 00 = No sensor connected.

RO

x

 

ot

Outdoor Air Temp Output

EOAT

Display OA temperature.

RO

x

 

k1

Emergency Heat Enable

 

Set emergency heat status: 0 = disable, 1 = enable.

RW

x

1

k2

Emergency Heat Set

EHS

Adjust emergency heat set point.

RW

x

53.6°F

point

(12°C)

k3

Emergency Heat

 

Set emergency heat operation during shutdown, 0 = no emergency heat during

RW

x

0

Shutdown Configuration

 

shutdown: 1 = allow emergency heat during shutdown.

A1

Auxiliary Heat Start

AHSD

Adjust auxiliary heat start differential.

RW

x

1.8°F (1°C)

Differential

A2

Auxiliary Heat End

AHED

Adjust auxiliary heat stop differential.

RW

x

1.8°F (1°C)

Differential

A3

Auxiliary Heat

 

Set auxiliary heat type: 0 = N.O. device, 1 = N.C. device.

RW

x

0

Configuration

 

b3

External BI-3

 

Set the function external binary Input 3: 0 = ventilation lockout, 1 = exhaust

RW

x

0

Configuration

 

interlock.

b6

External BO-3

 

Set the function of external binary output 3: 0 = exhaust fan on/off signal, 1 =

RW

x

0

Configuration

 

auxiliary heat.

(F

Fan Cycling

 

Set space fan cycles (switches off) during occupied, bypass, and standby mode: 2

RW

x

2

Configuration

 

= continuous, 3 = cycling.

(E

Filter Alarm Enable

 

Set filter alarm status: 0 = disable, 1 = enable.

RW

x

0

(r

Reset Filter Alarm Input

 

Enter 1 to clear filter alarm.

RW

x

//2

(1

Compressor Enable

 

Set compressor status: 0 = disable, 1 = enable.

RW

x

1

 

 

 

Adjust compressor cooling lockout set point. When the OA temperature falls below

 

 

 

(2

Compressor Cooling

CCLO

this set point, compressor cooling is not allowed. DO NOT make this setting lower

RW

x

63.5°F

Lockout Set point

than the factory default. There is a fixed +3.6°F (2°C) differential associated with

(17.5°C)

 

 

 

this set point.

 

 

 

(3

Compressor Heating

CHLO

Adjust compressor heating lockout set point. When the OA temperature falls below

RW

x

25°F

Lockout Set point

this set point, compressor heating is not allowed and only electric heat will be used.

(-4°C)

 

 

 

Adjust compressor start delay. Where several units (inductive loads) are

 

 

 

(6

Compressor Start Delay

 

connected to the same electrical supply, make this set point unique for every UVC

RW

x

0 sec

 

to prevent multiple compressors from energizing at the same time after a power

 

 

 

failure or occupancy change.

 

 

 

SP

OffsetSpace Temp Sensor

 

Adjust this setting to bias the UVC measured space temperature.

RW

x

0

Un

Keypad/display

 

Set keypad/display temperature units in English or SI. This set point also effects

 

 

 

 

which unit types displayed over Metasys N2 and BACnet MS/TP networks using

RW

x

F

Temperature Units

 

 

 

 

the appropriate optional communications modules.

 

 

 

1.RW = read and write capable, RO = read only.

2.If a menu value is greater than 2-digits (higher than 99), then // will be displayed on the keypad/display.

McQuay OM 751

11

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American Standard UV05 manual Chlo