Robertshaw SMART 4000 Commercial Multi-stage HVAC Controller User manual

Brand: Robertshaw

Model: SMART 4000 Commercial Multi-stage HVAC Controller

Category: Thermostats

Type: User manual

SMART 4000

Commercial Multi-stage HVAC Controller

Installation and Operation Manual

www.robertshaw.com

7/15 – 352-00199-001

by Uni-Line®

IMPORTANT SAFETY INFORMATION

WARNING: 





WARNING: 







WARNING: 



 Do not switch system to cool if the temperature is below 50°F (10°C). This can damage your

cooling system and may cause personal injury.

 Do not short (jumper) across terminals on the gas valve or at the system control to test

installation. This will damage the thermostat and void the warranty.

 Do not connect ground to any terminal in this unit.

 All wiring must conform to local and national building and electrical codes and ordinances.

 Use this thermostat only as described in the manual.

CONTENTS

IMPORTANT SAFETY INFORMATION 2

Installation 5

Wiring Overview 5

Powering the SMART 4000 5

 

 

 

 

 

 

 

Commissioning Aids 7

Info Window 7

Service Override 7

Service Mode 7

Relay Test Mode 8

Economy Test Mode 8

Typical Wiring Diagrams 8

Typical Heat Pump System - Four Compressors 8

 

 

Two Stage Cooling With Drive Open Drive Closed Hot Water Valve 9

 

 

 

 

 

Single Stage Water Sourced Heat Pump 10

 

 

0 to 10V Wiring 10

Sensor Wiring 10

Two Wire Sensors 10

 

Four Wire Sensors 12

 

Installer Menu 15

Operation 27

The PIN Prompt 27

 

Programming 28

 

 

 

 

Advanced Features 31

Economy Cycle 31

 

Economy Logic 33

Input 33

Valve Control 34

Output Relay 35

Compressor Lead Lag 35

 

 

 

 

Four Wire Sensors 37

Communications Functions 38

Specifications 40

Troubleshooting 41

Five Year Limited Warranty 42



Smart Sense

HVAC controller. The SMART 4000 will

provide your clients with many years of trouble-free comfort control.





premium product.

The Smart Sense

SMART 4000 product is under constant revision, upgrade and enhancement





for errors or omissions contained in this document. It is the responsibility of the user to ensure



in a safe manner.

INSTALLATION



The SMART 4000 is a DIN rail-mounted device that has been designed to precisely control a



ensure the thermostat is simple to set up and install, ensuring reliable control of commercial

HVAC systems.



provided throughout this manual.

R - 24 Volt Acve

C - 24 Volt Common

0 - 10V output - 1

0 - 10V Common

0 - 10V output - 2

Room Sensor Input

Sensor Common

0 - 10V input

Aux input 1

Aux Common

Aux input 2

Modbus

Communicang

Sensor

100 - 270V AC N

100 - 270V AC A

R-Common

Fan

Compressor 3

Compressor 2

Compressor 1

Cool1 NC

Heat

Neat NC

Aux Com

Aux NO

DIP switches

Figure 1



The SMART 4000 can be powered from 24V AC (± 15%) or from 100 to 270V AC.

Use one power input only.

The A and N inputs are used for powering the thermostat from line voltage (270V max).



Equipment Connections











control drive open/drive closed valves. All other relays are single pole normally open.





the thermostat relays or the equipment that the thermostat is controlling.



Do not exceed the maximum current handling capacity of any of the thermostat relays.

Communications Terminals





CAUTION: 





0 to 10V Outputs



page 23.

0 to 10V Inputs





The standard room temperature sensor provided with the thermostat is wired to the Room

Sensor Terminal and Sensor Common terminal next to it. It is recommended that 30 AWG

(0.25 mm) or larger shielded pair cable is used and the shield wire grounded in a suitable



where the sensor cable is run close to other electrical cabling.



problems associated with long cable runs or interference in the sensor wiring. This sensor is a

digital sensor. Shielded cable is required on all cable runs with the shield wire grounded in a











the auxiliary input to the Aux Common terminal next to them.

CAUTION: 









Table 1.



Table 1

   On

1 

If Sw2 = On HC - Heat Fan Logic

Energize in Heat



Energize in Cool



2 Equipment Control Logic Heat Pump Heat/Cool

Commissioning Aids

To assist commissioning the SMART 4000 there are a

number of aids provided.







outputs, the room and outside air temperature sensor, as well as whether a relay is ON or OFF.

AO1 and AO2 show the two Analog output values. RT shows the room temperature. OT shows

outside air temperature. D1 and D2 show the two digital inputs' status (0 = Open 1 = Closed).



the 0 to 10V input voltage.









thermostat OFF when you wish to temporarily suspend



either Enable or Disable.

CAUTION: 











Relay Test Mode





connected to the AC equipment while performing this test or damage to the AC system may be



Economy Test Mode





LED will be ON and the LCD will show Economy Test. The fresh air damper will be held at 10V

and the return air damper will be held at 0V.

Typical Wiring Diagrams

A number of typical wiring diagrams are provided in this manual. This list does not represent all









manufacturer as well as other diagrams within this manual.





manner.

Typical Heat Pump System - Four Compressors

120 - 240V AC Neutral

120 - 240V AC Acve

Control Acve

Fan

Compressor 3

Compressor 2

Compressor 1

Reversing Value

Compressor 4

R C

Four Wire

In this example the thermostat

is running a heat pump

system with four compressors

providing four stages of



cooling.

The thermostat is being

example.



Sw1 OFF – Rev in Heat

ON – Rev in Cool

Sw2 OFF – HP Mode

Installer Options

For four compressor systems

Set aux relay = Comp 4



120 - 240V AC Neutral

120 - 240V AC Acve

Control Acve

Fan

Cool 2

Cool 1

Open

Closed

R C

Four Wire

Heating Valve



and cooling relays in the

thermostat are a changeover

type. This allows you to drive



open and/or closed.



Sw1 OFF – Fan ON with heat

Sw2 ON – HC Mode

Installer Options

None required.



Control Acve

Fan

CWP call (Oponal)

Heat 1

Heat 2

R C

Four Wire

In Valve Mode, both the relays





thermostat to modulate the 0

to 10V valve and also call for



a cooling demand if required.



are shown in this example.



Sw1 OFF – Fan ON with heat

Sw2 ON – HC Mode

Installer Options

Set aux relay = Aux heat

Set Y1= Cool

Single Stage Water Sourced Heat Pump

R C

Four Wire

Control Acve

Fan

Compressor

R/Valve

R - 24V Acve

C - 24V Common

This is similar to a standard

single stage heat pump except

that the auxiliary input is set

to shut the thermostat down



system.

This fault input can be used as

a phase fail input or any other



The thermostat LCD will

indicate when a fault (low

water) is detected.



Sw1 OFF – Rev in heat

ON – Rev in cool

Sw2 OFF – HP Mode

Installer Options

Set Aux input 1 to Fault.

0 to 10V Wiring







Sensor Wiring

The thermostat will accept two types of temperature sensors. The standard two wire sensor







The standard two wire sensors are suitable for room temperature monitoring only. There are a

number of types of two wire sensors available, an overview is provided below. Two wire sensors

connect to the Room Sensor terminal and the Common terminal next to it on the thermostat.

Two wire sensors are not polarity dependent.

The SMART-R-02 – Uses two wires to communicate the room temperature to the thermostat.







controller. The SMART-R-02 sensor is supplied as standard in the

box with each thermostat controller.

SMART-R-02

Aer Hours iniate

Room

Com



(± 2 C degrees) adjustment of room temperature from the



the room occupants to reduce the room temperature without











a typical indoor range of approximately

100 feet (30 m).

Duct sensors (SMART-R-03) are also



or duct space temperature monitoring





Auto O or Vent Mode











 – An open circuit room sensor turns the thermostat OFF.

Vent – An open circuit room sensor will permit the indoor fan only

to operate during occupied Start periods.

Full Vent - An open circuit room sensor will run the indoor fan

for as long as the sensor open circuit exists, regardless of current

program.

Aer Hours Run Funcon









a single two wire sensor it is possible to:

 measure room temperature

 offset the room temperature, altering comfort levels by

± 3F (± 2C),

 initiate (or cancel) an after hours heating or cooling call,

 shut the thermostat down,

 place the thermostat in fan-only Ventilation Mode.

SMART-R-05

Aer Hours iniate

Room

Com

Aer Hours iniate

SMART-R-02

Aer Hours iniate

Room

Com

Averaging Room Sensors

When it is necessary to measure the room temperature in



of room sensors. The thermostat will control using an average of

these temperatures with the two wire sensors.

An example of averaging in two, three and four places is











for the three and four averaging sensors example.

SMART-R-02 SMART-R-02SMART-R-02

SMART-R-02 SMART-R-02SMART-R-02 SMART-R-02

Aer Hours Switch

Figure 2

CAUTION: 





Four Wire Sensors



sensor with displays for room temperature, set temperature, and adjustments.



can be associated with two wire sensors.

NOTE: 

disabled when the thermostat detects that an indoor four wire sensor is installed. You



Sensor with Display (SMART-R-02V)

Smart Sense four wire sensors measure both humidity and

temperature. They are used when economy cooling is required,





Two versions of four wire sensors are available. The display



This permits the set temperature to be adjusted within the





SMART-R-02 SMART-R-02









thermostat to its previous state. If the thermostat is set to manual control, the thermostat will



on that schedule.

Sensor Without Display

The standard four wire sensor measures temperature and humidity without



designed for use as an outside air sensor and can be used for an inside

sensor if required.

CAUTION: 





standard two wire dry bulb sensor for remote temperature monitoring. This input overrides the



NOTE: 



Sensor Wiring

Terminals 1 and 4 power the sensor (12V DC ± 4V is normal) while terminals 2 and 3

communicate data between each sensor and the thermostat.

The sensors must be wired in series only and no two sensors should have the same DIP switch









NOTE: You may power the four wire sensor locally from a 12V DC power supply and connect

the thermostat to the sensor using terminals 2 and 3.

Four Wire

Figure 3

Ancillary Input wiring

The thermostat has two digital inputs that have been provided to permit a digital signal







If two inputs contradict each other, input one has priority.



regardless of what input they are on.





box, however, some adjustment of the standard thermostat parameters may need to be



The thermostat has a comprehensive advanced Installer Menu. This menu permits you to adjust



of the thermostat.





three digit PIN before advancing to the next step. Refer to









A typical Installer Menu window is shown here.



Menu.







for three seconds, you will immediately leave the Installer

Menu.





surrounding the menus, the cool set temperature in this example.









NOTE: 



once you exit this menu.













INSTALLER MENU



 

Change Programming



Change Auxiliary Relay



Change Auxiliary Input





Change Analog Output

























































1  

The thermostat has a three digit PIN from 000 to 199 that is used to access various menu

items if enabled by the installer. This menu permits you to see the current PIN and change it.

Should you wish to change the PIN, you must enter it twice. If both PINs match, the new PIN

is updated and must be used on all future PIN requests.

NOTE: If you change and then forget this PIN, the thermostat must be returned to an authorized



  

Use this menu item to set the security access for the various menus within the controller.

Options

OFF

Set Temp Only – The user can alter the set temperatures without requiring a PIN but will be

prompted for the PIN before entering the Schedule and Installer menus.

Set and Program Only – The user can edit the Set Temperature and Time Schedule menus,



 – All menu items require a PIN to enter.

  



The thermostat can operate as either a programmable controller or manual controller



Options

– If selected, the thermostat will turn ON and run 24 hours per day, 7 days per



Manual – The thermostat relies on an external signal to turn it ON or OFF. This external signal









Start and the OFF event is named Stop.







want the thermostat to start during one day, run past midnight and stop the next day. See





thermostat that will override the normal 7 day 1 event program. This is useful for pre-

programming the thermostat to be OFF for common holidays.







4  F (49





Options

Heat F to 120C to 49C).

Cool – The lowest cooling setpoint that can be adjusted, 43F to 120C to 49C).

NOTE: Regardless of the setpoint limits, the thermostat is designed to maintain the cooling



apart so the setpoints do not overlap.

  







Holiday Schedule on page 29 of this manual.



Options

HeatF to 120C to 49C).

CoolF to 120C to 49C).

  











NOTE: 

  

The thermostat has 3 temperature sensor inputs.

Room – The 2 Wire Room sensor input

O/A – Smart outside air sensor

Options

 – Adjust this value of the selected sensor by ± 8F (± 4.5C).





Response Speed – Use this value to select how rapidly the thermostat responds to room

temperature changes.

VFAST/Fast/Nor (Normal)//VSLOW

/

SS = Standard HI = High Select LO = Low Select

8  



how each compressor performs as part of the overall system. The fourth compressor if



You can set in 1 degree increments how far away this compressor will start from the previous

compressor’s start point.

NOTE: 

Options

C

turned to OFF.

NOTE: Compressor one cannot be turned OFF.

9 







Options

Lead/Lag









IMPORTANT: 







Smart Upstaging – Default 5 minutes. The thermostat does more than measure the











Timed Upstage



regardless of how close the room temperature and set temperature are.

10  













Options

 – Adjust this from OFF to 3, 4 or 5 minutes (Default = 3 Minutes)

Minimum Run Time

11  



room temperature. When this sensor is open circuited (or permanently short circuited) and



Options

– When the room temperature sensor is absent, the thermostat will shut down.





cooling.

Full Vent





NOTE: 



  





can be set when the high temperature alarm is selected.

 – This relay is not used.

 – The auxiliary relay will CLOSE when the Thermostat is running the













Compressor 4 – The auxiliary relay is assigned as compressor four. Compressors one through



 – In this mode, the auxiliary relay is assigned as auxiliary heat relay, providing





Heat and Cool

or cooling.

Cool – The auxiliary relay will CLOSE whenever the thermostat is calling for cooling.

Heat

Connued on next page.

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Robertshaw SMART 4000 Commercial Multi-stage HVAC Controller User manual

Brand: Robertshaw

Model: SMART 4000 Commercial Multi-stage HVAC Controller

Category: Thermostats

Type: User manual

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Robertshaw SMART 4000 Commercial Multi-stage HVAC Controller User manual

Robertshaw SMART 4000 Commercial Multi-stage HVAC Controller User manual

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