ClimateMaster 38 WQ-S018SSC301 Скачать руководство пользователя страница 21 | Manualshive

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Page 21

TROUBLESHOOTING

General

CXM board troubleshooting in general is best summa-
rized as simply varifying inputs and outputs. After this
process has been varified, confidence in board operation
is confirmed and the trouble must be else where. Below
are some general guidelines required for developing
training materials and procedures when applying the
CXM control.

Field Inputs

All inputs are 24VAC from the thermostat.and can be
varified using a volt meter between C and Y, G, O, W.
See the I/O Reference table below.

Sensor Inputs

All sensor inputs are 'paired wires' connecting each
component with the board. Therefore continuity on
pressure switches, and the condensate switch can be
checked at the board connector.

The thermistor resistance should be measured with the
connector removed so that only the impedance of the
thermistor is measured. If desired this reading can be
compared to the chart shown in the thermistor section of
this manual based upon the actual termperature of the
thermistor clip. An ice bath can be used to check
calibration of a thermistor if needed.

Outputs

The compressor relay is 24VAC and can be varified
using a voltmeter. The fan signal is passed through the
board to the external fan relay. The alarm relay can
either be 24VAC as shipped or dry contacts (measure
continuity during fault) for use with DDC by clipping the
J1 jumper. Electric heat outputs are 24VDC ground
sinking and require a voltmeter set for DC to varify
operation. See the I/O Reference table below.

Test Mode

Test mode can be entered for 20 minutes by shorting the
test pins.

Connection

Input or

O u t p u t

Description

R

-

24 VAC

C

-

24 VAC (grounded common)

Y

I

Connect to thermostat - Y output call for compressor

W

I

Connect to thermostat - W output call for Htg2 or Emerg Ht

O

I

Connect to thermostat - 0 output call for reversing valve with cooling

G

I

Connect to thermostat - G output call for fan

AL1

O

Connect to thermostat fault light - 24VAC or dry alarm

AL2

O

Alarm Relay 24VAC or dry

A

O

Output for water solenoid valve - paralleled with compressor contactor coil

BR

O

Connection for blower relay-direct connect from G

BRG

O

Blower relay common connection

CC

O

Connection for compressor contactor

CCG

O

Compressor contactor common connection

HP

I

High Pressure Switch input terminals

LP

I

Low Pressure Switch input terminals

FP1

I

Water Coil Freeze Protection Thermistor Input

FP2

I

Air Coil Freeze Protection Thermistor Input

RV

O

Reversing Valve Output Terminals - direct connect from "O"

CO

I

Condensate overflow input terminals

24VDC

O

24 VDC supply to electric heat module

W1

O

Output terminal for stage 1 electric heat

W2

O

Output terminal for stage 2 electric heat

Table 10. CXM Input/Output Reference Table

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Содержание 38 WQ-S018SSC301

Страница 1: ...INSTALLED BY Geothermal Outdoor Split System Installation Operation Maintenance Instructions Revision 5 03 02 GT S GT S ...

Страница 2: ...8 Open Loop Well Water Installation 9 Refrigeration Installation 10 Evacuation and Charging 12 Hot Water Generator 14 Electrical Data 15 Line Voltage Field Wiring 15 Low Voltage Field Wiring 16 Water Valve Wiring 16 Freeze Protection Selection 16 Electrical Wiring Schematic 17 CXM Module Description 18 Control Unit Troubleshooting 21 Operating Limits 25 Unit Start Up Procedure 25 Pressure Drop Tab...

Страница 3: ...t is required for installation Unit Protection Cover units on the job site with either shipping cartons vinyl film or an equivalent protective covering Cap the open ends of pipes stored on the job site In areas where painting plastering spraying is not been completed all due precautions must be taken to avoid physical damage to the units and contamination by foreign material Physical damage and co...

Страница 4: ...f refrigerants If a compressor is removed from this unit system refrigerant circuit oil will remain in the compressor To avoid leakage of compressor oil the refrigerant lines of the compressor must be sealed after it is removed Table 1 GT S Physical Data GT S Dimensions 33 22 26 MODEL 1 8 2 4 3 0 3 6 4 2 4 8 6 0 Compressor Rotary Factory Charge R22 oz 70 74 85 101 122 130 na Water Connection Size ...

Страница 5: ...in accordance with ARI standard 330 Unit performance has been certified with a specific air handler air coil The following is a guideline designed to assist the system designer with matching these units with air handlers and air coils To match these units to an Air Handler A coil you will need to base the coil selection using the following conditions ARI Standard 330 93 DB deg F WB deg F EWT deg F...

Страница 6: ...or area that allows easy loop and lineset access and also has enough space for service personnel to perform typical maintenance or repairs GT S units are usually installed on a condensor pad directly outside the lineset access into the building The service valve side can be located toward the building keeping the loop access end away from the building Conform to the following guidelines when selec...

Страница 7: ... continued directly under the GT S unit as shown in Figure 5 When connecting the earth loop to the GT S unit care should be taken to measure the supply return piping before cutting and adding the fitting for connection to the flow controller Allow movement of the pipe for fusion and or connection up into the flow controller Prevent the pipe from exerting stress on the fitting and insure proper bac...

Страница 8: ...e with the seasons Pressures will be higher in the winter months than during the cooling season This fluctuation is normal and should be considered when charging the system initially Pressurize the loop to a static pressure of 40 50 psi winter 15 20 psi summer After pressurization be sure to remove the plug in the end of the Grundfos loop pump motor s to allow trapped air to be discharged and to i...

Страница 9: ...is not contaminated in any manner and can be disposed of in various ways depending on local building codes i e recharge well storm sewer drain field adjacent stream or pond etc Most local codes forbid the use of sanitary sewer for disposal Consult your local building and zoning department to assure compliance in your area Water Control Valve Note the placement of the water control valve Always mai...

Страница 10: ...nt tubing Use a low silver phos copper braze alloy on all brazed connections Add On GT S Applications In Add on GT S applications the coil should be located in the supply side of the furnace to avoid condensation damage to the furnace heat exchanger Also a high temperature limit switch should be installed as shown in Figure 10 just upstream of the coil to de energize the compressor any time the fu...

Страница 11: ...nsate with vented trap Air Pad Low Voltage Wiring Return Plenum Condensing Unit Air Handler TXV IN toward outdoor condensing Unit Insulated line set with UV Paint Power Disconnects PVC Condensate with vented trap Air Pad Low Voltage Wiring Return Plenum Condensing Unit Fossil Furnace Add On A Coil Air Temperature Limit Switch TXV IN toward outdoor condensing unit ...

Страница 12: ...and coil must be evacuated to at least 200 microns to remove any moisture and noncondensables Evacuate the system through both service ports in the shipping position full CW in to prevent false readings on the gauge because of pressure drop through service ports The system is now ready for charging CHARGING THE GT S SYSTEM There are two methods of charging a refrigerant system One method is the to...

Страница 13: ...ooling in the heating mode After initial check of heating sub cooling shut off unit and allow to sit 3 5 minutes until pressures equalize Restart unit in the cooling mode and check the cooling superheat against Table 6 If unit runs satisfactorily then charging is complete If unit does not perform to specifications the cooling txv air coil side may need to be readjusted until the cooling superheat ...

Страница 14: ...g up from cap end Check the lineset for leaks Pinch the bypass tubing as shown in Figure 12 being careful not to damage the tubing Verify lineset tubing is completely insulated with a minimum 1 2 thick closed cell and painted to prevent deterioration of the insulation due to ultra violet light and weather Water Piping Connect water piping as shown in Figure 13 Keep water piping lengths at a minimu...

Страница 15: ... pumps will automatically be cycled as required by the unit To avoid possible injury or death due to electri cal shock open the power supply disconnect switch and secure it in an open position during installation CAUTION Use only copper conductors for field installed electrical wiring Unit terminals are not designed to accept other types of con ductors ELECTRICAL LINE VOLTAGE Table 7 GT S Electric...

Страница 16: ...be used ELECTRICAL LOW VOLTAGE Figure 15a Low Voltage Field Wiring Freeze Protection The CXM DXM control allows the field selection of source fluid freeze protection points The factory setting of FP1 is set for water 30 F In earth loop applications jumper FP1 Antifreeze should be clipped as shown in Figure 15b to change the setting to 10 F a more suitable temperature when using antifreezes in cold...

Страница 17: ...Page 17 Paradigm 18 60 230 60 1 Wiring Diagram Part 69828103 Rev C 8 19 99 GT S 18 60 ...

Страница 18: ...g for FP1 to be 30 F or 10 F Not Clipped 30 F Clipped 10 F Air Coil Freeze Protection Limit Setting Jumper 3 JW3 FP2 Low Temp provides field selection of temperature limit setting for FP2 to be 30 F or 10 F Not Clipped 30 F Clipped 10 F Alarm Relay Setting Jumper 1 JW1 AL2 Dry pro vides field selection of Alarm Relay terminal AL2 to be jumpered to 24Vac or to be dry no connection Not Clipped AL2 c...

Страница 19: ...ssure switch is open for 30 seconds prior to compressor power up it will be considered a low pressure loss of charge fault The Low Pressure Switch input is bypassed for the initial 60 seconds of a compres sor run cycle Low Pressure Lockout Code 3 Water Coil Freeze Protection FP1 The FP1 ther mistor temperature must be below the selected freeze protection limit setting for 30 continuous seconds dur...

Страница 20: ...de W becomes active Y already active The Compressor relay remains on EH1 is turned on immediately With continuing Heating Stage 2 demand EH2 will turn on after 10 minutes The EH2 will not turn on in heating or will turn off if already on if loop temperature is above approximately 50 F FP1 45 F Emergency Heat In Emergency Heat mode W be comes active while Y is not active EH1 is turned on immediatel...

Страница 21: ... 24VAC as shipped or dry contacts measure continuity during fault for use with DDC by clipping the J1 jumper Electric heat outputs are 24VDC ground sinking and require a voltmeter set for DC to varify operation See the I O Reference table below Test Mode Test mode can be entered for 20 minutes by shorting the test pins Connection Input or Output Description R 24 VAC C 24 VAC grounded common Y I Co...

Страница 22: ...r before servicing can cause severe personal injury or death If operational difficulties are encountered be sure to perform the preliminary checks before referring to the Troubleshooting Chart Verify that the unit is receiving electrical supply power Make sure the fuses in the fused disconnect switches are intact After completing the preliminary checks described above be sure to inspect for other ...

Страница 23: ... restrictions Too high of external static Check static vs blower table X Air Temperature out of range Too much cold vent air Bring entering air temp within design parameters X Improper freeze protect setting 30 F vs 10 F Normal airside applications will require 30 F only X X Bad thermistor Check temp and impedance correlation per chart Condensate Fault Code 6 X X Blocked Drain Check for blockage a...

Страница 24: ...fts behind stat X X Unit undersized Recheck loads sizing check sensible clg load and heat pump capacity X X Scaling in water heat exchanger Perform Scaling check and clean if necessary X X Inlet Water too Hot or Cold Check load loop sizing loop backfill ground moisture High Head Pressure X Reduced or no Air flow Check for dirty air filter and clean or replace in heating Check fan motor operation a...

Страница 25: ... between 40 80 F in heating and 50 110 F in cooling Air coil cleaned CXM field selectable options such as thermistor settings are correct UNIT START UP Operating Limits Environment This unit is designed for indoor installa tion only Power Supply A voltage variation of 10 of nameplate utilization voltage is acceptable Starting Conditions GT S Units Units start and operate in an ambient of 10 F with...

Страница 26: ...s proper functioning of the reversing valve 6 Operate the heat pump in the heating cycle immedi ately after checking cooling cycle operation Allow five 5 minutes between tests for pressure to equalize or cycle the reversing valve to equalize a Turn thermostat to lowest setting and set thermo stat switch to HEAT position b Slowly turn thermostat to a higher temperature until the compressor activate...

Страница 27: ...85 179 198 9 16 8 15 19 22 19 24 71 82 205 230 14 19 1 5 14 0 15 2 28 34 7 0 2 3 74 84 168 186 9 16 8 14 12 17 19 24 73 85 210 238 14 19 1 5 9 0 10 2 30 37 3 0 73 83 158 175 9 16 8 12 7 12 19 24 76 88 215 242 14 19 1 5 6 7 7 9 31 38 1 5 75 85 229 251 9 17 8 15 18 21 17 23 85 95 220 260 18 28 2 5 14 4 16 6 32 39 9 0 2 3 74 84 218 241 9 17 8 14 10 14 17 23 90 100 225 265 18 28 2 5 10 8 12 4 33 41 3 ...

Страница 28: ...the fan motor and reduce air flow resulting in poor performance With ICM2 fan motors excessive fan watts will be used as well It is especially important to provide consistent washing of these filters in opposite direction of the normal air flow once per month using a high pressure wash similar to that found at self serve car washes Condensate Drain In areas where airborne bacteria produce a slime ...

Страница 29: ...Page 29 MAINTENANCE NOTES ...

Страница 30: ......

Страница 31: ...nt design and specifications Statements and other information contained herein are not express warranties and do not form the basis of any bargain between the parties but are merely the manufacturer s opinion or commendation of its products 69197345 Part 69197345 R M A N U F A C T U R E R CERTIFIED TO ARI AS C O M P L Y I N G W I T H I S O STANDARD 13256 1 HEAT PUMPS W A T E R T O AIR BRI N E T O ...

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