Ruskin Z2000rt Instruction Manual

Zone Control Solutions

Installation & Maintenance Manual

Model: Z2000RT

Wall Mount Thermostat

II-Z2000RT-613/New ALL STATED SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT PRIOR NOTICE OR OBLIGATION ©RUSKIN 2013

Table of Contents

Primary Application & Introduction..................................................................................................................2

Terminal Designations & Installation.......................................................................................................... 2&3

Wiring Diagrams...............................................................................................................................................4

Key Functions and Setup......................................................................................................................5,6,7 & 8

Specifications ...................................................................................................................................................8

Contact Ruskin Air & Sound Control, Air Measuring Product Sales

3900 Dr. Greaves Road Grandview, MO 64030.

Telephone: 816-761-7476

www.ruskin.com

PRIMARY APPLICATION AND INTRODUCTION

Ruskin model Z2000RT thermostat is designed to work with the Z2000 modulating zone control system and all Ruskin “Stand-

Alone” zone control solutions. Please take time to read and understand this manual so that installation and testing is undertaken in

an efficient and effective manner. Although great care has been taken in the preparation of this manual, Ruskin takes no

responsibility for errors or omissions contained herein. It is the responsibility of the installer to ensure that this thermostat and the

equipment connected to it operate in a safe and efficient manner.

Due to ongoing product enhancement, Ruskin reserves the right to change the specifications of the Z2000RT without notice.

DISASSEMBLY

Insert a small coin in the release slot located on the bottom of the thermostat. Gently twist the coin to

release the thermostat from the sub-base. Avoid twisting the case, as this may stress the LCD and cause

it to crack or bend the terminal pin connectors.

TERMINAL DESIGNATIONS

The Z2000RT has dedicated screw terminals located on the sub-base to facilitate ease of wiring to the

actuator logic card mounted on all Z2000 and “Stand-alone” dampers. When wiring the Z2000RT to the

actuator logic card, use standard 18-8 thermostat wire (verify with local codes if plenum rated wire is

required).

! WARNING

THIS ACCESSORY IS TO BE INSTALLED BY A QUALIFIED SERVICE TECHNICIAN. TO AVOID UNSATISFACTORY OPERATION

OR DAMAGE TO THE PRODUCT AND POSSIBLE UNSAFE CONDITIONS, INCLUDING ELECTRICAL SHOCK AND FIRE, THE

INSTALLATION INSTRUCTIONS PROVIDED WITH THIS ACCESSORY MUST BE STRICTLY FOLLOWED AND THE PARTS

SUPPLIED USED WITHOUT SUBSTITUTION. DAMAGE TO THE PRODUCT RESULTING FROM NOT FOLLOWING THE

INSTRUCTIONS OR USING UNAUTHORIZED PARTS MAY BE EXCLUDED FROM THE MANUFACTURER’S WARRANTY COVERAGE.

! WARNING

DISCONNECT ELECTRICAL POWER PRIOR TO SERVICING THIS UNIT. FAILURE TO DO SO CAN RESULT IN ELECTRICAL

SHOCK RESULTING IN PERSONAL INJURY OR DEATH.

Sub-Base Detail

THERMOSTAT LOCATION

The Z2000RT should be installed in a location that represents the ambient space temperature. Do not install the thermostat in an

area where drafts are present, near the floor, behind doors or on an external wall. Avoid placing the thermostat in areas where the air

movement is limited, affected by direct sunlight or other areas not typical of the temperature in the space.

MOUNTING THE SUBBASE

When mounting the Z2000RT, be aware that drafts may

travel down wall cavities and enter the back of the thermostat

through the control wire hole in the wall. It is important to

seal the hole to prevent any drafts that might affect the

internal temperature sensor. Pull the control wires through

the large opening in the thermostat sub-base then level and

mount the sub-base on the wall using the supplied anchors

and screws. Do not over-tighten the mounting screws as the

sub-base may warp causing improper seating of the thermostat

connecting pins to the terminal blocks. Use a properly sized

screwdriver and terminate each wire to its dedicated terminal.

Do not over-tighten the terminal screws. Check to see that all

wires are landed correctly and dressed properly to prevent

any shorts.

SWITCH FUNCTIONS

The Z2000RT contains a set of dip switches numbered

1 through 8. Only dip switches 1, 2 and 3 are active.

Switch 1 is used to lock the thermostat after setup is

completed. When the thermostat is locked (ON position)

a padlock icon will show on the LCD. When locked, only

setpoint changes and status functions can be accessed

by the user. Do not set Switch 1 in the ON position until

all setup functions are completed.

Switch 2 is used to display the space temperature, duct

temperature and setpoint in Celsius (ON position) or

Fahrenheit (OFF position). Select Celsius or Fahrenheit

before proceeding to the thermostat setup menu.

Switch 3 is used to select two-position (ON position)

or fully modulating (OFF position) damper control to

best suit the specific application requirement.

SYSTEM WIRING DIAGRAMS

Stand-Alone

Modulating

Damper or Diffuser System

Z2000 Modulating Zone Control System

WIRE TO OPTIONAL

TRACER

DSAMPER(S)

(UP TO 20 MAY BE

WIRED IN

PARALLEL)

Z2000RT

WIRE TO OPTIONAL

TRACER

DAMPER(S)

(UP TO 20 MAY BE

WIRED IN

PARALLEL)

Z2000RT

KEY FUNCTIONS

The A = ON/OFF KEY - When the Z2000RT is not locked, this

key allows the thermostat to be turned ON or OFF. When in the

OFF position, the damper is also driven closed.

B = STATUS KEY - Pressing the STATUS key displays the

UNIT number, ZONE number, DUCT temperature and

DAMPER position.

C and D = UP and DOWN KEYS - These keys are used to

increase or decrease the setpoint as well as change thermostat

setup values.

E = SETUP KEY - This key is used to toggle through the

thermostat

setup menu.

ATTACHING THE THERMOSTST TO THE SUB-BASE

When attaching the thermostat to the sub-base, first place the

hinged access cover on by fitting the plastic molded pins into

the grooves at the top of the thermostat. Carefully align the two

standoffs located at the top of the thermostat with the slots in

the top of the sub-base. Allow the thermostat to swing

downward and gently push until the connector pins are fully

seated into the terminal blocks.

THERMOSTAT SETUP

Apply 24 Volts power to the thermostat. The LCD Display

will momentarily display all icons as shown in Figure 1.

ENTERING THE SETUP MENU

Press twice and hold the SETUP key until the word DAMPER

appears on the LCD screen as indicated on Figure 2.

SETTING THE MINIMUM DAMPER POSITION

Press the SETUP key again and the LCD will

display the minimum damper position. The factory

default is 10% which means the damper is driven

90% closed after a heating or cooling call is satisfied.

Press the UP and DOWN keys to change the minimum

damper position. Position may be adjusted in

10% increments (see Figure 3).

SETTING THE MAXIMUM DAMPER POSITION

Press the SETUP key again and the LCD will display

the maximum damper position for heating and cooling.

The factory default is 100% which means the damper

can drive fully open with a call for heating or cooling.

Position may be adjusted in 10% increments using the

UP and DOWN keys as shown in Figure 4.

SETTING A UNIT NUMBER

Press the SETUP key again and the LCD will display

the word UNIT. The factory default is 00. This number

can be used to assign the Z2000RT to a particular

HVAC unit. Use the UP and DOWN keys to assign a

UNIT number from 00 to 99. (Figure 5)

SETTING A ZONE NUMBER

Press the SETUP key again and the LCD will display

the word ZONE. The factory default is 00. This number

can be used to identify each Z2000RT thermostat wired

to a Z2000 zone control panel or when used in multiple

stand-alone applications. Use the UP and DOWN keys

to assign a ZONE number from 00 to 99. (Figure 6)

SETTING THE HEATING LIMIT

Press the SETUP key again and the LCD will display

the heating limit. The factory default is 76° F. Press the

UP and DOWN keys to change the heating limit setting.

It is strongly recommended that the limit not be set

Above Thefactory default setting. (Figure 7)

SETTING THE COOLING LIMIT

Press the SETUP key again and the LCD will display

the cooling limit. The factory default is 68° F. Press

the UP keys to change the cooling limit setting. It is

strongly recommended that the limit not be set below

the factory default setting. Refer to Figure 8.

SETTING THE ACTUATOR SPEED

Press the SETUP key again and the LCD will display

the actuator speed. The factory default is 90 seconds

which is the time it takes the actuator to drive the

damper blade fully open or fully closed. This is a critical

step in the Z2000RT setup since the thermostat can

be used with a variety of 24 Volt actuators. If you are

unsure of the actuator speed, place the actuator in the

fully closed position and then apply 24 Volts to common

and normally open. The time it takes to drive the damper

blade fully open equals the actuator speed setting.

(Figure 9)

SETTING THE MODBUS ADDRESS

Press the SETUP key again and the LCD will display

the Modbus communications address. The factory

default is 01. The Z2000RT has integrated Modbus

communications capability for remote monitoring

and control. For more information on Modus

Communications, contact Ruskin (Figure 10).

TEMPERATURE CALIBRATION OFFSET

Press the SETUP key again and the LCD will display

the temperature calibration offset as shown on

Figure 11. The factory default setting is 0. Typically,

it is not necessary to adjust the temperature calibration

offset as the Z2000RT has been factory calibrated.

If calibration is necessary, a high quality electronic

digital thermometer must be used. Place the

thermometer sensor probe next to the thermostat

sensor and allow five minutes before comparing

the temperature readings. Use the UP and

DOWN keys to adjust the temperature calibration.

The range is +/- 9° F.

SAVING SETTINGS AND EXITING THE SETUP MENU

Press the ENTER key and the Z2000RT will save

the setup menu settings and exit the program. The LCD

will display the space temperature along with other

normal operating functions. To review the thermostat

settings, simply press and hold the SETUP key until the

setup menu is displayed and then toggle through the

settings. Press the ENTER key to exit the setup menu.

Remove the thermostat from the sub-base and set

Switch 1 in the ON position to lock the thermostat which

will prevent setup changes from being made. When the

thermostat is locked, a padlock icon will be displayed

on the LCD as shown on Figure 12.

HELPFUL HINT

If it is necessary to exit the setup menu

before all setup functions are completed, simply

press the ENTER key and all settings will be saved.

To re-enter the setup menu, press and hold the

SETUP key until the word DAMPER appears and

then continue pressing the SETUP key to toggle through the

functions to where you left off

CHECKING THERMOSTAT STATUS POINTS

After the thermostat is locked and operational, its status

functions can be checked by pressing the STATUS key

twice and toggling through the following status points:

UNIT - Displays the HVAC unit number assigned to

thermostat.

ZONE - Displays the thermostat zone number.

DUCT - Displays the duct temperature.

DAMPER - Displays the damper position in one degree

increments. (0% = fully closed and 100% = fully open)

THERMOSTAT OPERATION

The Z2000RT is designed to provide accurate but simple

temperature control for the user. When the thermostat is not

calling, only the space temperature is displayed on the LCD

along with the padlock icon that confirms the thermostat setup

functions cannot be changed. The user can use the UP and

DOWN keys to change the thermostat setpoint within the

setpoint limits and review the status points by pressing the

STATUS key (Figure 13).

CHANGING THE SETPOINT

When the UP and DOWN keys are pressed, the thermostat will

display the word SET. The setpoint then can be changed within

the setpoint limits (Figure 14).

CALL FOR HEATING

When the thermostat calls for heating,

the word HEAT will be displayed on the

LCD as shown on Figure 15.

CALL FOR COOLING

When the thermostat calls for cooling,

the word COOL will be displayed on the

LCD as indicated on Figure 16

DAMPER POSITION OVERRIDE

The Z2000RT has a damper position override feature to assist

in air balancing and bypass damper setup. With the thermostat

unlocked, press twice and hold the SETUP key until the word

DAMPER appears on the LCD as reflected on Figure 17.

OVERRIDE TO OPEN

Press the UP and DOWN keys until the word OPEN appears on

the LCD and then press the ENTER key. The damper will drive

open and remain in the open position until the override is

cancelled. See Figure 18 for details.

OVERRIDE TO CLOSE

Press the UP and DOWN keys until the word CLOSED appears

on the LCD and press the ENTER key. The damper will drive

closed and remain in the closed

position until the override is cancelled. (Figure 19)

ADVANCED FUNCTIONS

CANCELLING THE DAMPER OVERRIDE

In order for the Z2000RT to control normal damper operation,

the override must be cancelled. Press and hold the SETUP key

until the word DAMPER OPEN or DAMPER CLOSE appears on

the LCD. Use the UP or DOWN key until only the word

DAMPER is displayed and then press the ENTER key. The

thermostat will then resume normal operation. Refer to

Figure 20.

Z2000RT SPECIFICATIONS

Input Voltage 24 VAC 50/60 Hz

Relay Rating 24 VAC @ 1Amp per relay

Operating Temperature 23° F to 122° F Operating RH 0-

95% (non-condensing)

Size 4-7/16” W x 4-1/16” H x 7/8” D LCD

Display Size 2-3/4” W x 1-7/8” H Temperature

Sensor 10K NTC type 3

Accuracy +/- 1° F @ 77° F Display

Resolution 1° F

Control Range 36° F to 96° F

Back Light Blue EL (Electro Luminescent) Back

Light Life 3,000 hours to half brightness

Communications Protocol Modbus

Approvals FCC (Part 15) (Pending) C-tick

Warranty 5 years

The information provided in this manual is believed to be complete and accurate. Ruskin Manufacturing is a manufacturer and supplier of

equipment and, as such, is not responsible for the manner in which its equipment is used nor for infringement of rights of third parties resulting from