ClimateMaster CM3500 Series Manuale utente

CM3500 Controller - ClimateMaster DOAS Water-Source Heat Pumps - Rev.: 7 Oct, 2008B

CM3500 Controller - ClimateMaster DOAS Water-Source Heat Pumps - Rev.: 7 Oct, 2008B 3

CAUTION

CAUTION - ONLY TRAINED, QUALIFIED PERSONNEL SHOULD INSTALL AND/OR SERVICE

CLIMATEMASTER EQUIPMENT. SERIOUS INJURY, DEATH AND PROPERTY DAMAGE CAN RESULT

FROM IMPROPER INSTALLATION/SERVICE OF THIS EQUIPMENT. HIGH VOLTAGE

ELECTRICAL COMPONENTS AND REFRIGERANT UNDER PRESSURE ARE PRESENT.

LIMITED WARRANTY. The goods manufactured by seller are warranted to be free from all latent

defects in material and workmanship which may be disclosed under normal use and service within

two years from date of shipment. In order for warranty to be valid, a START-UP REPORT must be

completed and returned to the factory. If the report is not sent back, warranty will be voided on the

equipment. If it is found that the goods contained defects at the time such goods were furnished by

the seller, seller will either repair or replace the defective part or parts at sellers option. This warranty

to repair or replace is the exclusive remedy and is expressly limited to the materials furnished by the

seller. All replacements or repairs shall be F.O.B. Oklahoma City, OK. The seller shall not be liable

for labor cost incurred in diagnosing the problem, in removal or replacement of the part or parts so

repaired or replaced. Accordingly, seller shall not be liable for any consequential damages, whether

to person or property, caused by defects in goods. This warranty does not apply to any goods which

may have been repaired or altered in any way outside of our factory, so as to affect its stability in

our judgment, nor does this warranty apply to any goods which have been subjected to misuse,

negligence or accident. This warranty is in lieu of all other warranties, expressed or implied, including

any implied warranty of merchantability, and extends only to the original purchaser.

CM3500 Controller - ClimateMaster DOAS Water-Source Heat Pumps - Rev.: 7 Oct, 2008B

CM3500 Controller - ClimateMaster DOAS Water-Source Heat Pumps - Rev.: 7 Oct, 2008B 5

TABLE OF CONTENTS

1 - Installation................. ......................................................................................................................8

1.2 - Sensor Installation............................................................................................................................8

1.2.1 - Duct-Mount Sensor .............................................................................................................8

1.2.2 - Remote Room Sensor(s)......................................................................................................9

1.3 - Auxiliary Air Heating Control Wiring .................................................................................................9

1.3.1 - Auxiliary Heating - Dry Contact Closure..............................................................................9

1.3.2 - Auxiliary Heating - Proportional Signal................................................................................9

1.4 - Wiring for Ventilation Air ...................................................................................................................10

1.5 - Mounting the Remote Terminal ........................................................................................................10

1.5.1 - Installing the Remote Terminal ............................................................................................11

1.6 - Overview...........................................................................................................................................11

1.7 - Remote Terminal Troubleshooting....................................................................................................11

1.7.1 - Troubleshooting the Remote Terminal .................................................................................11

2- IAQ Controller Details ......................................................................................................................12

2.1 - Menu Overview and General Instructions ........................................................................................12

2.2 - Main Menu........................................................................................................................................13

2.2.1 - Temperature Settings ..........................................................................................................13

2.2.1.1 - Supply Air Temperature Setpoint..........................................................................14

2.2.1.2 - Zone Reset Setpoints ...........................................................................................14

2.2.1.3 - Operation of the Remote Room Sensor ...............................................................15

2.2.2 - Un-Occupied Settings ..............................................................................16

2.2.3 - Temporary Occupancy ........................................................................................................17

2.2.4 - Occupancy Schedule ..........................................................................................................17

2.2.4.1 - Schedule Options .................................................................................................18

2.2.4.1.1 - Current Schedule ................................................................................18

2.2.4.2 - Temporary Holidays ..............................................................................................19

2.2.4.3 - Annual Holidays....................................................................................................19

2.2.4.4 - Set Time................................................................................................................20

2.2.5 - Unit Revision........................................................................................................................20

2.3 - Service Menu............. ......................................................................................................................21

2.3.1 - Unit Status...........................................................................................................................22

2.3.1.1 - Modes & Time.......................................................................................................22

2.3.1.2 - Outside Air Dewpoint............................................................................................23

2.3.1.3 - Outside Air Temperature Setpoints.......................................................................23

2.3.1.4 - I/O Status..............................................................................................................24

2.3.1.4.1 - Digital Inputs (Binary) ..........................................................................24

2.3.1.4.2 - Analog Inputs......................................................................................25

CM3500 Controller - ClimateMaster DOAS Water-Source Heat Pumps - Rev.: 7 Oct, 2008B

2.3.1.4.3 - Digital Outputs (Binary) .......................................................................25

2.3.1.4.4 - Analog Outputs ...................................................................................26

2.3.1.4.5 - Room Sensor Data..............................................................................26

2.3.2 - Parameter Settings..............................................................................................................27

2.3.2.1 - Hot Gas Control....................................................................................................27

2.3.2.2 - Auxiliary Heat Control...........................................................................................27

2.3.2.3 - Un-Occupied Deadbands.....................................................................................28

2.3.2.4 - Room Reset of Leaving Air Temperature Control .................................................28

2.3.2.5 - Heat Wheel Control Setpoints...............................................................................29

2.3.3 - Sensor Offsets.. ...................................................................................................................30

2.3.4 - Pressure Cutouts ................................................................................................................. 30

2.3.5 - Glycol Ratio...... ...................................................................................................................31

2.4 - Factory Conguration.......................................................................................................................31

2.4.1 - Refrigerant....... ....................................................................................................................32

2.4.2 - Set as Heat Pump ...............................................................................................................32

2.4.3 - Sequential Heating ..............................................................................................................32

2.4.4 - Room Reset of Leaving Air Temperature Control....... .........................................................32

2.4.5 - Unoccupied Control ............................................................................................................32

2.4.6 - Heat Wheel VFD ..................................................................................................................33

2.4.7 - Dual Refrigerant Circuits......................................................................................................33

2.4.8 - Room Reset of Leaving Air Temperature Control Settings..................................................33

2.4.9 - Building Automation Communications................................................................................34

2.5 - Alarm Menu......... .............................................................................................................................35

2.5.1 - Alarm Screen.... ...................................................................................................................35

2.5.2 - Low Suction Pressure..........................................................................................................35

2.5.3 - General Fault.... ...................................................................................................................36

2.5.4 - High Discharge Pressure .....................................................................................................36

2.5.5 - Multiple Low Pressure in Heat Pump Mode ........................................................................37

2.5.6 - High Discharge Pressure Circuit B ......................................................................................37

2.5.7 - Low Suction Pressure Circuit B...........................................................................................37

2.5.8 - Outside Air Temperature Sensor Failure..............................................................................37

2.5.9 - Supply Air Temperature Sensor Failure ...............................................................................38

2.5.10 - Room Reset Network Failure.............................................................................................38

2.5.11 - Alarm History Screen.........................................................................................................38

2.5.12 - Air Filter Service Required.................................................................................................38

2.6 - Air Filter Service Required ...............................................................................................................39

CM3500 Controller - ClimateMaster DOAS Water-Source Heat Pumps - Rev.: 7 Oct, 2008B 7

3 - Hardware Details ...........................................................................................................................40

3.1 - Programmable Controller .................................................................................................................40

3.2 - Remote Terminal.... ..........................................................................................................................40

3.3 - Remote Room Sensor......................................................................................................................40

3.4 - Suction Pressure Transducer ...........................................................................................................40

3.5 - Discharge Pressure Transducer .......................................................................................................41

3.6 - Supply Air Temperature Sensor........................................................................................................41

3.7 - Outside Air Temperature and Relative Humidity Sensor ..................................................................41

3.8 - Air Flow Switch.................................................................................................................................41

CM3500 Controller - ClimateMaster DOAS Water-Source Heat Pumps - Rev.: 7 Oct, 2008B

1. - Installation

1.1 - Humidity and Temperature Control Package

Your ClimateMaster controller is designed for precise monitoring and control of air temperature and relative

humidity (RH) within a conditioned environment.

This CM3500 control system is easy to install and operate. It features a wall-mountable remote display

terminal which allows you to view and adjust set points and modes of operation. It also indicates the

operating status of major components inside of the DOAS unit.

Most sensors and inputs have been factory-installed and wired inside of the DOAS unit. In most cases, you

need only mount and wire the supply air temperature sensor and the remote display. The terminal, which is

simply an interface tool, contains no sensors. You do not need to install it in the space. If purchased with

your system, remote room sensors may require mounting as well.

1.2 - Sensor Installation

Your controller is provided with a duct-mount supply air temperature sensor. It may also come with one or

multiple remote room sensors depending on what option was selected when the equipment was ordered.

1.2.1 - Duct-Mount Sensor

A duct-mount sensor is normally used when continuous blower operation is desired or required. A

duct-mount sensor helps ensure consistent temperature and humidity levels throughout the space.

One drawback of this sensor is that it relies on a continuous stream of air moving past it. Using

a duct-mount sensor with a non-continuous blower may lead to short-cycling of the refrigeration

compressor.

Install the duct-mount sensor in the supply air duct downstream from an auxiliary heater (if used). Do

not mount the sensor in a section of duct where false readings may occur due to dead air regions,

solar heat gain or thermal losses in winter. Do not mount the sensor where water is likely to drip on it.

Liquid moisture may damage the humidity sensing element in the sensor. Run two, 18 gauge (0-500

feet) or two, 24 gauge (0-100 feet) wires from the sensor to the labeled terminal strip in the control panel

of the DOAS unit. See your wiring schematic for connection details. Note that undersized wiring will

cause inaccurate sensor readings. Do not run sensor wiring adjacent to or in the same conduit as

wires carrying more than 24 VAC.

CM3500 Controller - ClimateMaster DOAS Water-Source Heat Pumps - Rev.: 7 Oct, 2008B 9

1.2.2 - Remote Room Sensor(s)

ClimateMaster DOAS units ordered with the room reset of supply air temperature (RRSAT) option are

supplied with a remote room sensor. Up to four of these sensors may be wired to the system.

Figure 1

This wall-mountable display is an IP30 rated device. Ambient conditions must be between 32.0ºF and

120.0ºF and less than 85% RH. The controller’s RS485 serial interface communicates via three-way

plug-in terminals. Use a twisted pair plus shielded cable, 20-22 AWG. Total length of the network must

not exceed 1,500 feet. The capacitance between the wires must not exceed 90 pF/M. See your wiring

schematic for connection details. Note that undersized wiring will cause inaccurate sensor readings.

These remote devices require a separate 24Vac 50/60HZ 1.5VA power connection. Provide a

dedicated 250mAT fuse for each sensor. Use a class 2 safety transformer with a minimum rating

of 4VA. If the sensor is wired to F1 and F2 of the DOAS unit control panel terminal, G0 must be

connected to F2.

Do not run sensor wiring adjacent to, or in the same conduit as wires carrying more than 24 VAC.

1.3 - Auxiliary Air Heating Control Wiring

Note: You must use the ClimateMaster CM3500 control system to interlock the room heating system. This

prevents wide uctuations in room air temperature. It also prevents the heater from trying to heat the room

while the DOAS unit is running in the cooling mode.

1.3.1 - Auxiliary Heating - Dry Contact Closure

The standard ClimateMaster CM3500 Controller provides a dry contact closure to operate the auxiliary

space heating. The contact closes to energize a heater (by others) which has its own control transformer.

Run two wires from the thermostat terminal blocks on the heater to the labeled terminal strip on the

control panel of the DOAS unit. See your wiring schematic for connection details.

1.3.2 - Auxiliary Heating - Proportional Signal

As an option, ClimateMaster will provide a proportional 0-10 VDC direct-acting signal to modulate a

heating coil control valve or other auxiliary modulating heater. Most proportional valves have either

three or four terminals for eld-installed wiring.

CM3500 Controller - ClimateMaster DOAS Water-Source Heat Pumps - Rev.: 7 Oct, 2008B

• Four-terminal valves have two terminals for 24 VAC power and two terminals for the signal input.

• Three-terminal valves have one terminal for the “hot” 24 VAC input, a second terminal for the

“positive” signal input and a third, common terminal for the “neutral” 24 VAC input and the

“negative” signal input.

You must follow the instructions included with the valve cut sheet. Observe the proper polarity or you

may damage both the valve and the controller. See the unit wiring schematic for information on signal

wire connection points.

1.4 - Wiring for Ventilation Air

ClimateMaster DOAS units have a set of dry contacts to interlock with a eld-supplied exhaust blower. The

contacts close during the occupied mode to energize this blower.

See your wiring schematics and the DOAS unit’s installation and operation manual for more details on

installing and controlling ventilation air intakes.

1.5 - Mounting the Remote Terminal

The remote terminal must be located in a dry, non-corrosive environment. Operating conditions must be

between 0.0ºF and 140.0ºF and less than 90% RH. Moisture or chemicals can damage the circuitry of the

display. The display can either be afxed directly to the DOAS unit (indoor models only) or located up to 20

feet away using the cable that came with the display.

Figure 2

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