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Manual 2100-738C
Page

67 of 73

Troubleshooting Modulating Water

Line Control Board

The Bard QW*S3D Series is equipped with a water
line control board. The TACO 3-way valve adjustment,
conducted by the TACO iSeries Smart Actuator, is
generated through the water line control board. The
temperature measurement from the sensor located
in the blower outlet sends the resistance to the
board. The board will forward the resistance reading
through the SU and SC terminals when the unit is in
dehumidification mode, allowing for the appropriate
water flow adjustment to achieve the intended
temperature.
For board troubleshooting, a truth table is suppled
below (see Table 16).
See page 41 for the modulating water line control
sequence of operation.

FIGURE 43

Modulating Water Line Control Board

MIS-4140

C

R

CONTROL BOARD

Y

Y0

SU

SC

R

C

TWV

D

MODULATING WATER LINE

THERMISTOR

MIS-4140

Inputs from Board

Output from Board

R

Y

D

TWV

Y0

Full/Part Load Clg or Htg

X

X

X

Dehumidification w/o TWV

X

X

Three Way Valve, no Dehumidification

X

X

Full/Part Load Clg or Htg with Dehum, no TWV

X

X

X

X

Full/Part Load Clg or Htg with TWV, no Dehum*

X

X

X

X

Dehumidification

X

X

X

Full/Part Load Clg or Htg with Dehumidification

X

X

X

X

X

TABLE 16

Modulating Water Line Control Board Logic

NOTE

When a "Y" signal becomes active during a dehumidification cycle, the "Y" signal will have a

75-second time delay before "YO" becomes active. If at any point during the 75-second delay a

"D" call is no longer required, there will be a 55-second OFF time delay on the "D" terminal. The

55-second OFF time delay runs in parallel with the 75-second delay and will end if the 75-second

time delay is removed. This is done to prevent an incidental compressor time delays and to allow the

iSmart Actuator time to open up valve to water flow for normal operation.

* Not a designed operation mode. If there is a TWV input to the modulating water line control board without

a "D" call, the valve/actuator combination will continue to modulate, causing a fault with the flow switch.
Troubleshooting should start by referencing the dehumidification relay logic board (Bard P/N 8201-133). See
Table 11 on page 53.

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Summary of Contents for QW2S3DA

Page 1: ...NS Bard Manufacturing Company Inc Bryan Ohio 43506 www bardhvac com Manual No 2100 738C Supersedes 2100 738B Date 9 16 20 QW Series Geothermal R 410A Staged Capacity Packaged Heat Pump Models QW2S3DA QW2S3DB QW2S3DC QW3S3DA QW3S3DB QW3S3DC QW4S3DA QW4S3DB QW4S3DC QW5S3DA QW5S3DB QW5S3DC MIS 2736 MIS 2736 ...

Page 2: ...Ports 35 Piping Access to Unit 35 System Start Up 35 Sequence of Operation Cooling 40 Heating 40 Geothermal Logic Control 40 Modulating Water Line Control 41 iSeries Smart Actuator 42 Dehumidification Model Features 43 Special Features 43 Closed Loop Earth Coupled Ground Loop Applications Circulation System Design 54 Copper Water Coil Application 54 Start Up Procedure for Closed Loop System 54 Ope...

Page 3: ...erminals 42 Figure 32 iSeries Smart Actuator Temperature Setpoint 42 Figure 33 iSeries Smart Actuator Temperature Adjustment 43 Figure 34 Cooling Mode and Dehumidification Mode Circuit Diagrams 44 Figure 35 Water Temperature and Pressure Test Procedure 55 Figure 36 Piping Diagram 56 Figure 37 Cleaning Water Coil 59 Figure 38 Water Well System 60 Figure 39 Water Source H P Cooling Cycle 62 Figure 4...

Page 4: ...for Ground Source IGSHPA Heat Pump Systems Soil and Rock Classification for the Design IGSHPA of Ground Coupled Heat Pump Systems Ground Source Installation Standards IGSHPA Closed Loop Geothermal Systems Slinky IGSHPA Installation Guide For more information contact these publishers ACCA Air Conditioning Contractors of America 1712 New Hampshire Avenue Washington DC 20009 Telephone 202 483 9370 Fa...

Page 5: ...ers of unit 4 Single Grundfos UP26 64F pump isolation valves both ends piped with copper to double O ring fittings back corners of unit 5 Single Grundfos UPS26 99 FC pump isolation valves both ends piped with copper to double O ring fittings back corners of unit VOLTS PHASE A 230 208 60 1 B 230 208 60 3 C 460 60 3 COIL OPTIONS C Copper Coaxial Coil N Cupronickel Coaxial Coil NOTE Copper coils appr...

Page 6: ...6x2 ENERGY RECOVERY VENTILATOR ERV Voltage 230 208 60 1 230 208 60 1 ERV Full Load Amps 2 2 2 2 SHIPPING WEIGHT LBS 475 lb 475 lb Specifications 4 and 5 Ton MODELS QW4S3 A QW4S3 B QW4S3 C QW5S3 A QW5S3 B QW5S3 C Electrical Rating 60 Hertz 230 208 1 230 208 3 460 3 230 208 1 230 208 3 460 3 Operating Voltage Range 253 197 VAC 414 506 VAC 253 197 VAC 414 506 VAC Minimum Circuit Ampacity 37 28 17 43 ...

Page 7: ...des Model RATED VOLTS Hz PHASE NO FIELD POWER CIRCUITS MINIMUM CIRCUIT AMPACITY MAXIMUM EXTERNAL FUSE OR CIRCUIT BREAKER FIELD POWER WIRE SIZE GROUND WIRE SIZE QW2S3DA0Z QW2S3DB0Z QW2S3DC0Z 230 208 60 1 230 208 60 3 460 60 3 1 1 1 20 14 9 30 20 15 10 12 14 10 12 14 QW3S3DA0Z QW3S3DB0Z QW3S3DC0Z 230 208 60 1 230 208 60 3 460 60 3 1 1 1 27 22 13 40 30 15 8 10 14 10 10 14 QW4S3DA0Z QW4S3DB0Z QW4S3DC0...

Page 8: ...CATION DORFC PUMP ACCESS FOR FLUID CONNECTION FOR FROM BACK OF UNIT OPTIONAL HIGH VOLTAGE ELECTRICAL ENTRANCE FLUID CONNECTION FACTORY CONNECTED CONDENSATE DRAIN CONNECTION 3 4 PVC MALE ADAPTER 4 625 6 00 1 15 16 19 3 3 8 8 3 6 7 8 11 1 2 LEVEL 34 1 4 20 TO FLOOR 1 BETWEEN OPENINGS 30 7 8 5 7 16 OPTIONAL PLENUM BOX RIGHT SIDE VIEW OPTIONAL HIGH VOLTAGE BACK VIEW ELECTRICAL ENTRANCE FREEBLOW OPTION...

Page 9: ...ough the door If the unit can not be slid through the door then the unit will have to be put on a cart and tipped down to roll through the door It is recommended that an appliance cart be used with a strap to hold the unit on the cart The wheels of the unit must be locked If the wheels were allowed to roll the unit could roll off the cart The unit should always be carted from the left side This is...

Page 10: ...t These instructions and any instructions packaged with any separate equipment required to make up the entire air conditioning system should be carefully read before beginning the installation Note particularly Start Procedure and any tags and or labels attached to the equipment While these instructions are intended as a general recommended guide they do not supersede any national and or local cod...

Page 11: ...nce to install the duct work See Figure 6 on page 12 MIS 2739 A AIR DIVIDER ELIMINATOR 5 WALL SLEEVE MIST TRIM PIECE SUPPLY AIR ROLLERS BOTTOM RETURN AIR CIRCUIT BREAKER ROTARY OR TOGGLE DISCONNECT ELECTRICAL ACCESS BLOW PLENUM BOX TOP SIDE AND LOCKING COVER LOW VOLTAGE OPTIONAL FREE ELECTRICAL ENTRANCE TOP REAR SIDE VENTILATION PERMANENT HIGH VOLTAGE QW2S QW3S 42 000 QW4S QW5S 48 000 28 7 8 33 7 ...

Page 12: ... 112 289 ATTACHED TO BACK OF UNIT NOTE FOR USE WITH BLANK OFF PLATE OPTION ONLY MIS 4162 NOTE NOT A PICTORIAL REPRESENTATION OF THE ACTUAL SIZES FRONT VIEW Q SERIES SLEEVE MOUNTING BRACKETS 2 ATTACHED TO SHIPPING PALLET SMALL CABINET PART 112 289 2 PLACES LARGE CABINET PART 113 387 2 PLACES SIDE TRIM PART 134 178 7 ...

Page 13: ... WINDOW SILL DIMENSIONS GRILLE CLEARANCE OUTSIDE GRILLE MIS 1614 A THIS DIMENSION MUST REMAIN CONSTANT SPACER FOR WHEN FABRICATING UNIT AND WALL SLEEVE SHOWN WITHOUT SPACER SIZE UNDER UNIT X 2 5 32 750 32 750 RELATIONSHIP BETWEEN UNIT WALL SLEEVE INSULATION 2 500 SILL HEIGHT X 32 750 Mounting Bracket Bard P N Where Used 112 234 Small Cabinet Models 113 387 Large Cabinet Models ...

Page 14: ...IN MINIMUM A INSTALLATION HEIGHT 9 FT MINIMUM REQUIRED UNIT HEIGHT 7 FT 6 IN 10 INSTALLATION HEIGHT 8 FT 9 IN MINIMUM REQUIRED MINIMUM 12 IN TO DUCT BOTTOM 2 IN MINIMUM FROM DUCT FLANGE FLOOR MIS 2741 A MODEL A QW2S QW3S 25 QW4S QW5S 30 DUCT FIXED CEILING DUCT FLANGE SUSPENDED CEILING FIGURE 7 Installation with Free Blow Plenum ...

Page 15: ...nit to the ceiling This extends 20 above the unit for a total height above the floor of 10 7 8 The unit is equipped with a variable speed indoor blower motor which increases in speed with an increase in duct static pressure The unit will therefore deliver proper rated airflow up to the Maximum ESP shown in Table 4 on page 33 However for quiet operation of the air system the duct static should be k...

Page 16: ...the wall If the drain is to be routed through an unconditioned space it must be protected from freezing The drain line must be able to be removed from the unit if it is necessary to remove the unit from the wall MIS 2743 FLOOR OPTION DRAINING EXTERNAL DRAIN TUBE DRAIN HOSE FRONT VIEW WITH CONDENSER DOOR REMOVED ALTERNATE LOOP TO FORM A P TRAP ...

Page 17: ...that the mist eliminator be inspected annually and serviced as required The mist eliminator can be inspected from the outside of the building by looking through the outdoor grille The mist eliminator can be serviced from the outside The outdoor grille must be removed to do so The mist eliminator can be cleaned by washing with soap and water The excess water should be shaken off the mist eliminator...

Page 18: ...e there is a power connector for the lower blower assembly To disconnect this plug the tabs on both sides of the Figure 11 Removal of the Q TEC Energy Recovery Ventilator FRONT FILL MOUNTING SCREWS LOWER BLOWER ASSEMBLY POWER CONNECTOR POWER CONNECTORS plug must be squeezed to release the plug While squeezing the tabs pull the plug out of the socket 4 The QERV is plugged into the unit on the right...

Page 19: ...ld supplied lag bolts The fluid piping connections are to be within the confines of this bracket See Figure 1 on page 8 for cabinet openings and location of fluid coil connection points 2 Position the unit in front of the wall mounting bracket 3 Remove the locking screws from the wheels see Figure 12 4 Roll the unit up to the wall mounting bracket The unit must be level from side to side If any ad...

Page 20: ... of 73 FIGURE 13 Unit Mounting without Ventilation Wall Sleeve BRACKET WALL MOUNTING BASE TRIM SIDE TRIM CUT TO LENGTH 41 ADJUSTABLE SIDE TRIM EXTENSION KIT ORDERED SEPARATELY SIDE TRIM EXTENSION MIS 2744 A BASE TRIM EXTENSION ...

Page 21: ...Manual 2100 738C Page 21 of 73 FIGURE 14 Component Location WIRE ENTRANCE SIDE FIELD TERMINAL BLOCK REMOTE THERMOSTAT INDOOR DUAL BLOWERS CONTROL BOX CIRCUIT BREAKER PANEL MIS 2745 ...

Page 22: ...nt leaves the factory wired on 240V tap For 208V operation reconnect from 240V to 208V tap The acceptable operating voltage range for the 240 and 208V taps are as noted in Table 2 NOTE The voltage should be measured at the field power connection point in the unit and while the unit is operating at full load maximum amperage operating condition TABLE 2 Operating Voltage Range TABLE 3 Wall Thermosta...

Page 23: ... feeds through Pin 9 of Plug P2 The W1 E terminal is the emergency heat signal and feeds through Pin 3 of Plug P2 The L terminal is used as an input terminal when a CS2000 infrared occupancy device is used It feeds through Pin 12 of Plug P2 The D terminal is used only of dehumidification models and feeds through Pin 1 of Plug P2 LOW VOLTAGE CONNECTIONS FOR DDC CONTROL Fan Only Energize G Ventilati...

Page 24: ...r Temp and Humidity Part 8403 060 C 4115 102 E A W2 Y1 R Y2 Temp and Humidity Controller D YO Orange Orange Yellow Green Brown Brown White Red White PLUG 2 PLUG 1 Red Red Yellow Black White 1 Terminal 1 Black Strip WITH CO2 CONTROL FOR ENERGY RECOVERY VENTILATOR WITH CO2 CONTROL DO NOT CONNECT A OCCUPANCY INPUT BETWEEN THERMOSTAT AND LOW VOLTAGE TERMINAL STRIP DO MAKE THIS CONNECTION WHEN APPLYING...

Page 25: ...hermostat Wiring Diagram D Thermostat Option PLUG 2 Purple White D YO Pink Black White Red White Brown Blue Yellow Orange Brown White Purple Red Yellow Temp and Humidity Controller Part 8403 060 L W1 E G O B R Y1 W2 A Y2 C 4115 100 A 2 12 10 11 9 8 7 6 5 4 3 1 ...

Page 26: ...e Pink Purple Purple White Yellow Yellow W1 E L G D YO Part 8403 060 CO2 OUT 5 C 24VAC Y2 Controller A 1 W2 2 Y1 3 R 4 O B Part 8403 067 6 Temp and Humidity CO2 Controller TEMP OUT Orange Orange Orange Yellow Green Green Brown Brown White 4115 101 E FIGURE 18 Factory Mounted Thermostat and CO2 Vent Control Wiring Diagram H Thermostat Option ...

Page 27: ...ed Yellow Red White PLUG 2 Black Black White 2 1 2 Black FOR DEHUMIDIFICATION MODELS EQUIPPED WITH FACTORY HOT GAS REHEAT CONNECT SIGNAL FOR HUMIDISTAT TO PURPLE WHITE WIRE FOR ENERGY RECOVERY VENTILATOR WITH CO2 CONTROL DO NOT CONNECT A OCCUPANCY INPUT BETWEEN THERMOSTAT AND LOW VOLTAGE TERMINAL STRIP DO MAKE THIS CONNECTION WHEN APPLYING A COMMERCIAL ROOM VENTILATOR WITH CO2 CONTROL 4115 105 B F...

Page 28: ...Pink Purple White Purple OR CS9BE THO Black White COMPLETESTAT TEMPERATURE HUMIDITY AND OCCUPANCY CONTROLLER BARD PART CS9B THO 4115 108 Orange Yellow Brown Brown White Red White Red White 7 Red White 7 Red White 7 Red Yellow 2 Black White FIGURE 20 Factory Mounted Completestat with Occupancy Sensing and Temperature Humidity Control 1 3 Option Wiring Diagram ...

Page 29: ...Purple White Purple OR CS9BE THOC Black White COMPLETESTAT TEMPERATURE HUMIDITY OCCUPENCY AND CO2 CONTROLLER BARD PART CS9B THOC 4115 109 Orange Yellow Brown Brown White Red White Red White Red White Red White 7 7 7 Red Yellow 2 Black White FIGURE 21 Factory Mounted Completestat with Occupancy Sensing and Temperature Humidity CO2 Control 2 4 Option Wiring Diagram ...

Page 30: ...2 SC W2 A D Blue Pink Purple White Purple Either THOA or THOCA version can be used For THOA vent output A limits vent operation to 3 occupied periods For THOCA vent output A operates vent based on CO2 level BARD PART CS9B THOCA OR CS9BE THOCA 4115 119 2 1 Notes COMPLETESTAT TEMPERATURE HUMIDITY AND OCCUPANCY CONTROLLER BARD 1 PART CS9B THOA OR CS9BE THOA COMPLETESTAT TEMPERATURE HUMIDITY OCCUPANCY...

Page 31: ... over the valve s locking posts see Figure 24 Once the actuator is flush with valve body turn actuator clockwise and lock into position 4 To ensure the actuator will function correctly at start up there are two checks to conduct First verify the manual operation button circular button on top of iSeries Smart Actuator is in the upmost position If the button has been manipulated operated at any poin...

Page 32: ...elp accommodate room comfort during dehumidification High Pressure Switch This unit is equipped with a high pressure switch that will stop the compressor in the event of abnormal high pressure occurrences The high and low pressure switches are included in a lockout circuit that is re settable from the room In the event of a high or low pressure switch lockout a visual indication can be seen from t...

Page 33: ...ith three phase scroll compressors are equipped with a three phase line monitor to prevent compressor damage due to phase reversal The phase monitor in this unit is equipped with two LEDs If the Y signal is present at the phase monitor and phases are correct the green LED will light and contactor will energize If phases are reversed the red fault LED will be lit and compressor operation is inhibit...

Page 34: ...igh Altitude Installations CAL Used for Field Calibration 1 Damper should be fully closed at 700 ppm if not Potentiometer R7 can be adjusted clockwise CW to close it If it is fully closed at 700 ppm or lower no adjustments required 2 Blade as referenced to the Blade Position Label PRESS UP AND DOWN ARROWS TO ENTER CONFIGURATION MODE USE ARROWS TO SELECT SETTING PUSH MIDDLE BUTTON TO CHANGE CONTROL...

Page 35: ... and from the coaxial water coil is intended to enter exit the unit through the rectangular hole See Figures 1 page 8 8A page 14 27 page 36 and 28 page 37 The connections on the water coil are a double O ring with a retainer nut that secures it in place Various double O ring fittings are available to make it possible to connect to the coaxial coil with various methods and materials The methods inc...

Page 36: ...SHIPPED WITH UNIT CEILING SIDE TRIM PIECES SHIPPED WITH UNIT IF THE WALL THICKNESS IS LESS THAN 14 BUT GREATER THAN 8 A SIDE TRIM EXTENSION KIT QSTX42 IS REQUIRED REFER FLUID ACCESS FROM SLEEVE TOP OF UNIT SLEEVE FLUID ACCESS 3 x 8 FLUID ACCESS REAR OF UNIT BACK OF UNIT MIS 2746 FROM FLOOR 35 x 29 1 2 FLOOR FROM EACH SIDE FLUID ACCESS WALL OPENING FROM EACH SIDE OPENING IN MOUNTING BRACKETS SHIPPE...

Page 37: ...t without Ventilation Wall Sleeve 23 1 2 8 1 2 66 1 2 4 LEFT BRACKET REMOVED FOR FLOOR FLUID ACCESS FROM FLOOR FLUID ACCESS FROM TOP CLARITY WALL BRACKET OPENING IN REAR OF UNIT 3 x 8 BACK OF UNIT MIS 2747 WATER LINES WALL BRACKET TOP VIEW WALL BRACKET WALL LOCATION ...

Page 38: ...51 291 59 304 67 317 75 330 82 343 90 356 98 369 106 382 115 394 125 405 134 417 143 429 153 441 162 453 172 465 Model Return Air Temperature Pressure PART LOAD COOLING Fluid Temperature Entering Water Coil F 30 F 35 F 40 F 45 F 50 F 55 F 60 F 65 F 70 F 75 F 80 F 85 F 90 F 95 F 100 F 105 F 110 F QW2S 75 DB 62 WB Low Side High Side 105 120 110 134 115 149 119 164 124 179 128 188 134 208 135 227 137...

Page 39: ...S QW5S QPBX48 10 V Platinum Vinyl QPBX48 10 4 Gray Paint QPBX48 10 X Beige Paint Use with QPB48 or QPBS48 adjusts to ceilings up to 10 5 Cabinet Extensions for Ducted Applications Unit Compatibility QCX10A V Platinum Vinyl QCX10A 4 Gray Paint QCX10A X Beige Paint 20 height adjusts for ceilings up to 9 7 add QPBX42 9 for 9 7 to 10 3 finished ceiling heights QW2S QW3S QCX15A V Platinum Vinyl QCX15A ...

Page 40: ...ses SEQUENCE OF OPERATION Alarm Output The L terminal has 24 volts applied when a hard lockout occurs This can be used to drive a fault light or low voltage relay NOTE Both high and low pressure switch controls are inherently automatic reset devices The high pressure switch and low pressure switch cut out and cut in settings are fixed by specific heat pump model The lockout features both soft and ...

Page 41: ...eared the controller restarts the unit If a second fault occurs the controller will lockout the unit until the control is reset by breaking Y signal from thermostat The last fault will be kept in memory after a full lockout this is only cleared by cycling the unit power Modulating Water Line Control On a call for cooling or heat pump Y signal from thermostat the Y terminal has 24 volts applied and...

Page 42: ... airstream and the leads of the thermistor are positioned on the modulating water line board thermistor terminals For more information on the iSeries Smart Actuator setpoint see the following Setpoint section Setpoint As previously mentioned the iSeries Smart Actuator operates the valve to maintain a fixed setpoint The setpoint temperature is set using the setpoint dial located on top of the actua...

Page 43: ...ess while at the same time large amounts of moisture can be extracted from the passing air stream See Dehumidification Sequence of Operation for specific operating sequences and review the tables for performance on sensible and latent capacities water removal ratings and supply air delivery conditions The dehumidification refrigerant reheat circuit is controlled by a 3 way valve in the refrigerati...

Page 44: ...T DIAGRAM WATER 4 WAY WATER EXPANSION VALVE WATER HEAT PUMP DEHUMIDIFICATION VALVE HEAT PUMP COOLING MODE CIRCUIT DIAGRAM CHECK EXPANSION VALVE FILTER VALVE 4 WAY DRIER 4 WAY WATER EXPANSION VALVE BULB CHECK VALVE COMPRESSOR COIL MIS 3120 OPEN VALVE DISTRIBUTOR INDOOR COIL WATER BULB VALVE CIRCUIT OPEN CIRCUIT CHECK FIGURE 34 Cooling Mode and Dehumidification Mode Circuit Diagrams ...

Page 45: ...0 8 5 64 00 59 9 57 2 70 25 0 16 2 8 8 8 3 64 80 59 7 57 1 75 24 8 16 3 8 5 8 0 65 73 59 4 57 0 80 24 7 16 4 8 3 7 8 66 40 59 4 57 1 85 24 5 16 5 8 0 7 5 67 35 59 5 57 3 90 24 3 16 6 7 7 7 3 68 31 59 6 57 7 95 24 0 16 7 7 3 6 9 69 58 59 8 58 1 100 23 6 16 8 6 8 6 4 71 19 60 1 58 7 65 75 DB 66 7 WB 25 5 14 8 10 7 10 1 58 04 61 1 58 7 70 25 4 14 9 10 5 9 9 58 66 60 8 58 5 75 25 3 15 1 10 2 9 6 59 68...

Page 46: ...63 3 100 0 9 2 3 3 2 3 0 77 8 63 8 65 75 DB 65 5 WB 11 2 4 3 6 9 6 5 69 7 60 8 70 9 6 3 2 6 4 6 0 71 1 61 5 75 8 1 2 1 6 0 5 7 72 4 61 9 80 6 7 1 0 5 7 5 4 73 8 62 8 85 5 3 0 0 5 3 5 0 75 0 63 4 90 4 0 1 0 5 0 4 7 76 3 64 0 95 2 7 2 0 4 7 4 4 77 4 64 5 100 1 5 2 9 4 4 4 2 78 5 65 1 65 75 DB 66 7 WB 11 7 3 8 7 9 7 5 70 4 62 0 70 10 2 2 6 7 6 7 2 71 8 62 7 75 8 7 1 5 7 2 6 8 73 1 63 2 80 7 2 0 5 6 7...

Page 47: ... 7 54 9 70 37 3 23 4 13 9 13 1 62 73 56 9 55 1 75 35 9 22 8 13 1 12 4 63 51 57 1 55 2 80 35 3 22 5 12 8 12 1 63 74 57 5 55 7 85 34 1 22 0 12 1 11 4 64 52 58 0 56 1 90 32 8 21 4 11 4 10 8 65 24 58 6 56 4 95 31 3 20 7 10 6 10 0 66 13 59 3 56 9 100 29 7 20 1 9 6 9 1 67 68 60 1 57 4 65 75 DB 66 7 WB 39 2 22 3 16 9 15 9 56 89 57 9 56 3 70 38 4 21 9 16 5 15 6 57 03 58 0 56 5 75 37 0 21 3 15 7 14 8 57 57...

Page 48: ...6 65 75 DB 65 5 WB 16 0 3 1 12 9 12 2 71 6 59 5 70 16 3 3 6 12 7 12 0 71 1 59 4 75 15 7 3 4 12 3 11 6 71 2 59 4 80 14 7 2 6 12 1 11 4 72 2 60 0 85 12 8 1 1 11 7 11 0 73 8 60 8 90 10 3 1 0 11 3 10 7 76 1 61 8 95 7 0 3 8 10 8 10 2 79 1 63 2 100 3 0 7 2 10 2 9 6 82 9 64 8 65 75 DB 66 7 WB 17 0 2 1 14 9 14 1 72 7 60 7 70 17 3 2 5 14 8 14 0 72 2 60 6 75 16 7 2 4 14 3 13 5 72 3 60 6 80 15 7 1 5 14 2 13 ...

Page 49: ... 1 58 88 54 6 53 0 70 50 8 30 1 20 7 19 5 59 25 55 3 53 5 75 49 4 29 7 19 7 18 6 60 12 55 2 53 3 80 49 1 29 4 19 7 18 6 59 88 55 9 54 1 85 48 3 29 1 19 2 18 1 60 25 55 9 54 1 90 47 6 29 0 18 6 17 5 60 92 55 7 53 4 95 46 9 28 8 18 1 17 1 61 41 55 3 53 5 100 46 3 28 8 17 5 16 5 62 20 54 7 52 9 65 75 DB 66 7 WB 53 3 28 7 24 6 23 2 53 85 55 8 54 3 70 52 4 28 3 24 1 22 7 54 01 56 4 54 9 75 51 0 27 9 23...

Page 50: ... 64 2 65 75 DB 65 5 WB 27 1 7 3 19 8 18 7 68 4 56 9 70 24 8 5 4 19 4 18 3 70 1 57 8 75 21 7 3 3 18 4 17 4 71 9 58 7 80 18 9 1 0 17 9 16 9 74 1 59 8 85 15 3 1 5 16 8 15 8 76 4 61 0 90 11 1 4 2 15 3 14 4 78 9 62 3 95 6 5 7 1 13 6 12 8 81 6 63 7 100 1 4 10 2 11 6 10 9 84 5 65 2 65 75 DB 66 7 WB 28 8 6 4 22 4 21 1 69 2 57 9 70 26 5 4 5 22 0 20 8 70 9 58 8 75 23 3 2 4 20 9 19 7 72 8 59 7 80 20 6 0 0 20...

Page 51: ... 3 59 38 55 1 53 3 70 59 2 34 9 24 3 22 9 58 95 55 7 53 7 75 57 3 34 1 23 2 21 9 59 51 56 0 53 9 80 56 6 33 8 22 8 21 5 59 72 56 4 54 3 85 55 7 33 9 21 8 20 6 60 86 56 5 54 5 90 55 0 34 6 20 4 19 2 62 91 56 3 54 6 95 54 6 35 7 18 9 17 8 65 38 55 9 54 7 100 54 5 37 3 17 2 16 2 68 44 55 4 54 7 65 75 DB 66 7 WB 62 3 34 2 28 1 26 5 54 90 56 2 54 7 70 60 6 32 9 27 7 26 1 54 29 56 8 55 1 75 58 8 32 1 26...

Page 52: ... 1 83 5 64 2 65 75 DB 65 5 WB 28 3 6 6 21 7 20 5 70 2 58 4 70 25 7 4 6 21 1 19 9 71 6 59 0 75 22 6 2 4 20 2 19 1 73 1 59 6 80 19 6 0 0 19 6 18 5 75 0 60 6 85 16 2 2 7 18 9 17 8 77 1 61 6 90 12 5 5 7 18 2 17 2 79 3 62 8 95 8 5 8 9 17 4 16 4 81 8 64 0 100 4 3 12 4 16 7 15 8 84 5 65 4 65 75 DB 66 7 WB 29 7 5 2 24 5 23 1 71 2 59 6 70 27 0 3 3 23 7 22 4 72 6 60 2 75 23 9 1 1 22 8 21 5 74 1 60 8 80 20 9...

Page 53: ...ed X X X X X Y1 Y2 G A Full Load Heat Pump Occupied X X X X X X X Y1 Y2 G D Full Load Heat Pump Dehum Unoccupied X X X X X Y1 Y2 G D A Full Load Heat Pump Dehum Occupied X X X X X X X Y1 Y2 G W2 Part Load Heat Pump w Aux Heat Unoccupied X X X X X X X Y1 Y2 G W2 Part Load Heat Pump w Aux Heat Occupied X X X X X X X X X Y1 Y2 G W2 D Part Load Heat Pump w Aux Heat Dehum Unoccupied X X X X X X X Y1 Y2...

Page 54: ...ing ground loop and cooling tower only and is not recommended for open well application Start Up Procedure for Closed Loop System 1 Be sure main power to the unit is OFF at disconnect 2 Set thermostat system switch to OFF and fan switch to AUTO 3 Move main power disconnect to ON Except as required for safety while servicing do not open the unit disconnect switch 4 Check system air flow for obstruc...

Page 55: ...s Smart Actuator several times to make sure the water valve is loose and not seized before operation This simple step will provide assurance the 3 way water valve is free to move once power is applied IMPORTANT Operator must be removed from the valve body and ball valve must be in the full open position before soldering Valve is shipped in the full closed position FIGURE 35 Water Temperature and P...

Page 56: ...Flow Valve 7 provides correct flow of water to the unit regardless of variations in water pressure Observe the water flow direction indicated by the arrow on the side of the valve body Table 12 shows the flow rate of each valve Two constant flow rate valves may be installed in parallel to increase the flow For example when a 8603 007 6 GPM and 8603 011 5 GPM are installed in parallel the total flo...

Page 57: ...ld stop 5 Fully open the manual inlet and outlet valves 6 Check water flow A Connect a water flow meter to the drain cock between the constant flow valve and the solenoid valve Run a hose from the flow meter to a drain or sink Open the drain cock B Check the water flow rate through constant flow valve to be sure it is the same as the unit is rated for C When water flow is okay close drain cock and...

Page 58: ...rrosive water acid water generally not the case with ground water or galvanic reaction between dissimilar metals in the presence of water By using plastic plumbing or dielectric unions galvanic reaction is eliminated The use of corrosion resistant materials such as the Cupronickel coil through the water system will reduce corrosion problems significantly 4 Scale Formation Of all the water problems...

Page 59: ... pump suspended in the dry well casing Jet pumps and other types of suction pumps normally consume more electrical energy than similarly sized submersible pumps Pipe the unit the same as a water well system D Size the pump to provide necessary GPM for the ground water heat pump A 12 GPM or greater water flow rate is required on all modes when used on this type system E A pressure tank should be in...

Page 60: ...0 of 73 FIGURE 38 Water Well System 12 to 15 LAKE or POND WATER LEVEL GRAVEL FILL WELL CAP ELECTRICAL LINE PITLESS ADAPTER TO PRESSURE TANK SUBMERSIBLE PUMP PERFORATED PLASTIC CASING DROP PIPE WATER SUPPLY LINE 15 to 20 DEEP ...

Page 61: ...ature In milder climates a flooded tower concept is often used This concept involves adding makeup water to the cooling tower sump to maintain the desired loop temperature Units are equipped with double O ring female pipe thread fittings Consult the specification sheets for sizes Teflon tape sealer should be used when connecting to the unit to ensure against leaks and possible condenser fouling Do...

Page 62: ...Manual 2100 738C Page 62 of 73 FIGURE 39 Water Source Heat Pump Cooling Cycle ...

Page 63: ...Manual 2100 738C Page 63 of 73 FIGURE 40 Water Source Heat Pump Heating Cycle ...

Page 64: ... through a 5 minute delay on break plus random start sequence If no fault is found on next run cycle compressor will continue operation If fault reoccurs hard lockout will be initiated and the fault signal is sent to the L terminal Flow Switch Terminals FS1 and FS2 Circuit will be proved as closed prior to energizing CC terminal If float switch opens compressor will go into soft lockout mode and c...

Page 65: ...w standard testing procedures to confirm the problem The LED status code and error can be diagnosed by following the light sequences in the multi status LED table Table 14 If a wiring fault is suspected return to the wiring diagram located on the unit door and carefully inspect all external wiring and wiring connections Testing the Sensors A good quality test meter capable of measuring up to 5 000...

Page 66: ... 13474 103 0 5446 10 0 118108 28 0 36583 66 0 13137 104 0 5326 9 0 114272 29 0 35548 67 0 12810 105 0 5208 8 0 110575 30 0 34545 68 0 12492 106 0 5094 7 0 107010 31 0 33574 69 0 12183 107 0 4982 6 0 103574 32 0 32634 70 0 11883 108 0 4873 5 0 100260 33 0 31723 71 0 11591 109 0 4767 4 0 97064 34 0 30840 72 0 11307 110 0 4663 3 0 93981 35 0 29986 73 0 11031 111 0 4562 2 0 91008 36 0 29157 74 0 10762...

Page 67: ... w o TWV X X Three Way Valve no Dehumidification X X Full Part Load Clg or Htg with Dehum no TWV X X X X Full Part Load Clg or Htg with TWV no Dehum X X X X Dehumidification X X X Full Part Load Clg or Htg with Dehumidification X X X X X TABLE 16 Modulating Water Line Control Board Logic NOTE When a Y signal becomes active during a dehumidification cycle the Y signal will have a 75 second time del...

Page 68: ...listen for another click as the solenoid returns to its original position 3 If clicks can t be heard shut off power remove the control circuit molded plug from the compressor and measure the solenoid coil resistance see Table 17 4 Next check the molded plug Voltage Check Apply control voltage to the plug wires 18 to 28 volt ac The measured dc voltage at the female connectors in the plug should be ...

Page 69: ...f it s air noise cabinet duct or motor noise interview customer if necessary Air noise High static creating high blower speed Is airflow set properly Does removing filter cause blower to slow down Check filter Use low pressure drop filter Check correct duct restrictions Symptom Cause Procedure Noisy blower or cabinet Check for loose blower housing panels etc High static creating high blower speed ...

Page 70: ...trol module is now completely detached from the motor Verify with a standard ohmmeter that the resistance from each motor lead in the motor plug just removed to the motor shell is 100K ohms Refer to Figure 45 Measure to unpainted motor end plate If any motor lead fails this test do not proceed to install the control module THE MOTOR IS DEFECTIVE AND MUST BE REPLACED Installing the new control modu...

Page 71: ...d Motor Winding Defective Air Volume Low Air Filters Dirty Undersized or Restricted Ductwork Auxillary Heat Upstream of Coil Compressor Will Not Run No Power at Contactor Compressor Will Not Run Power at Contactor Compressor Hums But Will Not Start Compressor Cycles on Overload Thermostat Check Light Lite Lockout Relay Compressor Off on High Pressure Control Compressor Off on Low Pressure Control ...

Page 72: ...r Describe ________________________________________________________________ Type of Antifreeze________________ of Antifreeze __________ Freezepoint F _________ Piping Material ____________ Diameter of Loop Pipe ______ Diameter of Header Pipe _____ Length of Loops ________ Pressurized Non Pressurized Flow Center _____________________ If Horz Trench Loops per trench ____ L x W x D of trenches ______...

Page 73: ...________ __________ __________ 14 Wet Bulb Supply Air Temp F __________ __________ __________ __________ 15 Return Static Pressure WC __________ __________ __________ __________ 16 Supply Static Pressure WC __________ __________ __________ __________ Refrigerant Data 1st Stg Cool 2nd Stg Cool 1st Stg Heat 2nd Stg Heat 17 Head Pressure psi __________ __________ __________ __________ 18 Suction Pres...

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