SPECTRACOOL G28 User manual

Rev. A P/N 89116684

SPECTRACOOL™

Air Conditioner

G28 Model

INSTRUCTION MANUAL

Distributed by:

McLean Parts

317-257-6811

5736 N. Michigan Road

Indianapolis, IN 46228

[email protected]

www.mcleanparts.com

- 2 -

TABLE OF CONTENTS

RECEIVING THE AIR CONDITIONER...............................................................................................................................................................................3

HANDLING AND TESTING THE AIR CONDITIONER ......................................................................................................................................................3

HOW TO READ MODEL NUMBERS.................................................................................................................................................................................3

TECHNICAL INFORMATION ............................................................................................................................................................................................4

Sequence of Operation..........................................................................................................................................................................................................................4

Heating..........................................................................................................................................................................................................................................4

Cooling..........................................................................................................................................................................................................................................4

Standard and Optional Component Operation .....................................................................................................................................................................................4

Thermostat ...................................................................................................................................................................................................................................4

Remote Access Control (optional) ...............................................................................................................................................................................................4

Head Pressure Control (optional)................................................................................................................................................................................................4

Contactor (460V Units only)..........................................................................................................................................................................................................4

Overload (460V Units only) ...........................................................................................................................................................................................................4

Phase Monitor ..............................................................................................................................................................................................................................5

460V to 230V Transformer............................................................................................................................................................................................................5

115V/230V to 10V Transformer (optional)....................................................................................................................................................................................5

115V/230V to 24V Transformer and Relay (optional)...................................................................................................................................................................5

Schematics and Wiring Diagrams for Thermostat Control .................................................................................................................................................................5

4000 BTU 1-Phase Schematic (actual unit options may vary)....................................................................................................................................................5

6000 BTU 1-Phase Schematic (actual unit options may vary)....................................................................................................................................................6

G28 Generic 3-Phase Schematic (actual unit options may vary) ...............................................................................................................................................6

4000 BTU 1-Phase Wire Diagram (actual unit options may vary) ..............................................................................................................................................7

6000 BTU 1-Phase Wire Diagram (actual unit options may vary) ..............................................................................................................................................8

G28 Generic 3-Phase Wire Diagram (actual unit options may vary)..........................................................................................................................................9

DIMENSIONAL DRAWINGS...........................................................................................................................................................................................10

4000 BTU 115V With Thermostats ......................................................................................................................................................................................................10

6000 and 4000 BTU 230V With Thermostats ......................................................................................................................................................................................11

G28 Generic 460V With Thermostats..................................................................................................................................................................................................11

INSTALLATION INSTRUCTIONS....................................................................................................................................................................................12

REMOTE ACCESS CONTROL (optional)........................................................................................................................................................................13

INTRODUCTION ...................................................................................................................................................................................................................................13

ENERGIZING THE CONTROLLER........................................................................................................................................................................................................13

CONTROL STATUS INDICATION..........................................................................................................................................................................................................13

DISPLAYING AND CHANGING PROGRAM VARIABLES ......................................................................................................................................................................14

OPERATING PARAMETERS.................................................................................................................................................................................................................14

ALARM PARAMETERS.........................................................................................................................................................................................................................14

DISPLAYING TEMPERATURE SENSOR #2 .........................................................................................................................................................................................14

COMPRESSOR RESTART TIME DELAY ...............................................................................................................................................................................................14

ALARM OUTPUT CONTACT .................................................................................................................................................................................................................14

ALARM INPUT CONNECTION .............................................................................................................................................................................................................15

ALARM CONDITION DISPLAY..............................................................................................................................................................................................................15

AIR CONDITIONER UNIT COMMUNICATION FEATURES...................................................................................................................................................................15

USB COMMUNICATION..............................................................................................................................................................................................................15

ETHERNET COMMUNICATION ..................................................................................................................................................................................................15

USING THE PC INTERFACE TOOL.......................................................................................................................................................................................................16

USB COMMUNICATION MODE...................................................................................................................................................................................................16

ETHERNET COMMUNICATION MODE .......................................................................................................................................................................................17

Remote Access Control Pin-out ...................................................................................................................................................................................18

Schematics and Wiring Diagrams for Remote Access Control .........................................................................................................................................................19

4000 BTU 1-Phase Wire Diagram for Remote Access Control (actual unit options may vary)...............................................................................................21

6000 BTU 1-Phase Wire Diagram for Remote Access Control (actual unit options may vary)...............................................................................................22

G28 Generic 3-Phase Wire Diagram for Remote Access Control (actual unit options may vary)...........................................................................................23

4000 BTU 115V With Remote Access Control.....................................................................................................................................................................................24

4000 and 6000 BTU 230V With Remote Access Control.....................................................................................................................................................................24

INSTALLATION INSTRUCTIONS WITH REMOTE ACCESS CONTROL..........................................................................................................................25

MAINTENANCE .............................................................................................................................................................................................................26

Compressor .........................................................................................................................................................................................................................................26

Inlet Air Filter.......................................................................................................................................................................................................................................26

How To Remove, Clean or Install a New Inlet Air Filter.....................................................................................................................................................................26

Condenser and Evaporator Air Movers ..............................................................................................................................................................................................27

Refrigerant Loss..................................................................................................................................................................................................................................27

Refrigerant Properties Chart (R 407c)................................................................................................................................................................................................28

Refrigerant Properties Chart (R 134a)................................................................................................................................................................................................28

Functional Data....................................................................................................................................................................................................................................29

4000/6000 BTU Unit Characteristics...................................................................................................................................................................................................30

SERVICE DATA ...............................................................................................................................................................................................................31

Components List .................................................................................................................................................................................................................................31

TROUBLE SHOOTING....................................................................................................................................................................................................32

Basic Air Conditioning Trouble Shooting Check List - Thermostat Version .....................................................................................................................................32

Symptoms and Possible Causes - Thermostat Version.....................................................................................................................................................................33

Basic Air Conditioning Trouble Shooting Check List - Remote Access Control Version..................................................................................................................34

Symptoms and Possible Causes - Remote Access Control Version .................................................................................................................................................36

WARRANTY....................................................................................................................................................................................................................38

RETURN AND REPAIR POLICY ...........................................................................................................................................................................................................38

LIMITATION OF LIABILITY ...................................................................................................................................................................................................................39

Distributed by:

McLean Parts

317-257-6811

5736 N. Michigan Road

Indianapolis, IN 46228

[email protected]

www.mcleanparts.com

89116684 - 3 -

RECEIVING THE AIR CONDITIONER

Inspect the air conditioner. Check for concealed damage that may have occurred during shipment. Look for dents,

scratches, loose assemblies, evidence of oil, etc. Damage evident upon receipt should be noted on the freight bill.

Damage should be brought to the attention of the delivering carrier -- NOT to Pentair Equipment Protection --

within 15 days of delivery. Save the carton and packing material and request an inspection. Then file a claim with

the delivering carrier.

Pentair Equipment Protection cannot accept responsibility for freight damages; however, we will assist you in any

way possible.

HANDLING AND TESTING THE AIR CONDITIONER

If the air conditioner has been in a horizontal position, be certain it is placed in an upright, vertical or mounting

position for a minimum of five (5) minutes before operating.

Do not attempt to operate the air conditioner while it is horizontal

or on its side, back or front. The refrigeration compressor is filled

with lubricating oil. This will cause permanent damage to the air

conditioner and also voids the warranty.

CAUTION

TEST FOR FUNCTIONALITY BEFORE MOUNTING THE AIR CONDITIONER TO THE ENCLOSURE.

Refer to the nameplate for proper electrical current requirements, and then wire the unit to a properly grounded

power supply using copper conductors only. Power supply wiring should be restrained after field installation to

ensure no contact with internal fan. Minimum circuit ampacity should be at least 125% of the amperage shown on

the unit nameplate. No other equipment should be connected to this circuit to prevent overloading

Immediately after applying power, the evaporator blower (enclosure air) should start running. Operate the

air conditioner with the compressor running for five (5) to ten (10) minutes. You will need to set the cooling

thermostat or controller setpoint below the ambient temperature to operate the compressor.

Condenser air temperatures should be warmer than normal room temperatures within a few minutes after the

condenser impellers start.

See Sequence of Operation on page 4 for specifics on how the unit operates when powered up.

HOW TO READ MODEL NUMBERS

G28 06 4 6 G150

12345

1. Identifies the type/family of air conditioner and the approximate height (i.e. G28 = Global family

about 28 inch high).

2. This is the air conditioner’s listed capacity in BTU/Hr. at rated conditions. (i.e. 06=6,000 BTU/Hr. at

131/131 F)

3. 1 = 115 Volt, 2 = 230 Volt, 4 = 460 Volt.

4. 6 = 50/60 Hz or 60 Hz only.

5. Unique set of numbers for each air conditioner which identifies the accessories on a model.

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Indianapolis, IN 46228

[email protected]

www.mcleanparts.com

- 4 -

TECHNICAL INFORMATION

SEQUENCE OF OPERATION

The air conditioner comes standard with two internally mounted thermostats or remote access control. There

are two modes of operation; heating and cooling. During heating and cooling modes the evaporator fan will be

running.

HEATING

When the enclosure temperature is below the heating thermostat setpoint, power is applied to the

heaters. When the enclosure temperature is 10 degrees above the setpoint the heater is powered off.

COOLING

When the enclosure temperature is above the cooling thermostat setpoint, power is applied through the

thermostat. The compressor is then energized either directly or through a contactor if unit requires one.

The condenser impellers will start immediately if the unit is not equipped with an optional head pressure

control switch. If the unit is equipped with an optional head pressure control switch, the condenser

impellers will start once the refrigerant pressure reaches the setting of the switch. Component specific

information is listed below.

Operating the air conditioner below the minimum ambient temperature or above the maximum ambient

temperatures indicated on the nameplate voids all warranties. DO NOT set the enclosure thermostat to a

temperature lower than 70 F. Doing so can increase the likelihood of frost buildup on the evaporator coil.

The moisture that the enclosure air can contain is limited. If moisture flows from the drain tube

continuously this can only mean that ambient air is entering the enclosure. Be aware that frequent

opening of the enclosure’s door admits humid air that the air conditioner must then dehumidify.

STANDARD AND OPTIONAL COMPONENT OPERATION

THERMOSTAT

The standard G28 air conditioner uses our standard 10-1061-16 thermostat. The thermostat setpoint

equals the temperature that the air conditioner turns off. The thermostat has a 10 F differential from

setpoint until it calls for cooling or heating. An example of operation is shown below.

FOR COOLING (75100 F RANGE):

• Thermostat setpoint = 80 F

• Cooling turns on at 90 F

• Cooling turns off at 80 F

FOR HEATING (5565 F RANGE):

• Thermostat setpoint = 55 F

• Heating turns on at 55 F

• Heating turns off at 65 F

NOTE: For testing purposes only, the thermostat stop screw may be removed (on units so

equipped) to allow settings below 70 F. After testing, replace the stop screw and verify that

the thermostat cannot be set below 70 F. Extended operation below 70 F can cause coil freeze

ups resulting in reduced load and/or unit damage.

REMOTE ACCESS CONTROL (OPTIONAL)

See REMOTE ACCESS CONTROL (optional) on page 13

HEAD PRESSURE CONTROL (OPTIONAL)

Unit is set at the factory, no adjustment necessary.

At a saturated condenser temperature of 85 F (95 psig), the condenser fans will power off. At a saturated

condenser temperature of 118 F (165 psig), the condenser fans will power on.

CONTACTOR (460V UNITS ONLY)

The contactor on this model uses a 230V coil.

OVERLOAD (460V UNITS ONLY)

Set overload reset setting to automatic “A” and trip point dial to 1.6A.

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McLean Parts

317-257-6811

5736 N. Michigan Road

Indianapolis, IN 46228

[email protected]

www.mcleanparts.com

89116684 - 5 -

PHASE MONITOR

This product is equipped with Phase/Voltage Protection. Please verify correct phasing and voltage before

operating. Note the fans may still operate if phasing is incorrect, but the compressor will not, so the unit

will not cool. Illuminated light on Phase Monitor indicates phase is correct.

If the light is not illuminated, disconnect power from the unit and swap any two power leads at the

terminal block. This should correct the phasing. The light should now illuminate when power is reapplied.

460V TO 230V TRANSFORMER

The 230V from this transformer powers the fans, contactor and optional transformers. 460V is only used

to run the compressor.

115V/230V TO 10V TRANSFORMER (OPTIONAL)

This transformer powers the thermal display on thermostat controlled units only.

115V/230V TO 24V TRANSFORMER AND RELAY (OPTIONAL)

The transformer and relay are used to operate the condenser blower and compressor by using a customer

supplied, remote mounted door switch. This is not a safety door switch, but rather, only helps to reduce

condensation at the evaporator coil if the door is opened. The unit will remain electrified when the door

switch is operated with the evaporator fan continuing to operate, and potentially, if temperatures are low

enough, the heater may continue to operate on outdoor models.

SCHEMATICS AND WIRING DIAGRAMS FOR THERMOSTAT CONTROL

4000 BTU 1PHASE SCHEMATIC (ACTUAL UNIT OPTIONS MAY VARY)

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5736 N. Michigan Road

Indianapolis, IN 46228

[email protected]

www.mcleanparts.com

- 6 -

6000 BTU 1PHASE SCHEMATIC (ACTUAL UNIT OPTIONS MAY VARY)

G28 GENERIC 3PHASE SCHEMATIC (ACTUAL UNIT OPTIONS MAY VARY)

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McLean Parts

317-257-6811

5736 N. Michigan Road

Indianapolis, IN 46228

[email protected]

www.mcleanparts.com

89116684 - 7 -

4000 BTU 1PHASE WIRE DIAGRAM (ACTUAL UNIT OPTIONS MAY VARY)

89077284

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McLean Parts

317-257-6811

5736 N. Michigan Road

Indianapolis, IN 46228

[email protected]

www.mcleanparts.com

- 8 -

6000 BTU 1PHASE WIRE DIAGRAM (ACTUAL UNIT OPTIONS MAY VARY)

89081439

Distributed by:

McLean Parts

317-257-6811

5736 N. Michigan Road

Indianapolis, IN 46228

[email protected]

www.mcleanparts.com

89116684 - 9 -

G28 GENERIC 3PHASE WIRE DIAGRAM (ACTUAL UNIT OPTIONS MAY VARY)

Distributed by:

McLean Parts

317-257-6811

5736 N. Michigan Road

Indianapolis, IN 46228

[email protected]

www.mcleanparts.com

- 10 -

DIMENSIONAL DRAWINGS

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Distributed by:

McLean Parts

317-257-6811

5736 N. Michigan Road

Indianapolis, IN 46228

[email protected]

www.mcleanparts.com

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