BMC GTADP-3642-B Manual

A SERVICE OF

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Manual 2100-537

I

Page 2 of 54

CONTENTS

Getting Other Informations and Publications ..............3

General Information Geo-Trio (GT Series)

Water Source Nomenclature .................................................... 4

Blower Conversion & Line Power Connect ............................ 15

Application and Location

General ............................................................................ 18

Shipping Damage ................................................................... 18

Application ............................................................................ 18

Dual Fuel Heating / Cooling

................................................... 18

Location ............................................................................ 18

Ductwork ............................................................................ 18

Filters ............................................................................ 19

Condensate Drain .................................................................. 19

Piping Access to Unit .............................................................. 19

Wiring Instructions

General ............................................................................ 22

Control Circuit Wiring.............................................................. 22

Wall Thermostats & Low Voltage Connections

....................... 22

Ground Loop (Earth Coupled Water Loop Applications)

Note ............................................................................ 24

Circulation System Design ..................................................... 24

Start Up Procedure for Ground Loop System ........................ 25

Ground Water (Well System Applications)

Note ............................................................................ 27

Water Connections ................................................................. 27

Well Pump Sizing ...........................................................27 & 28

Start Up Procedure for Ground Water System ....................... 29

Water Corrosion .............................................................29 & 30

Remedies of Water Problems ................................................. 30

Lake and/or Pond Installations ....................................... 30 & 31

Desuperheater

Description ............................................................................ 32

Location ............................................................................ 32

Electrical Connection .............................................................. 32

Installation Procedure - General ............................................. 32

Oper. of Heat Recovery Unit .................................................. 33

Start Up & Checkout ............................................................... 33

Maintenance & Control Board Seq. of Operation ........... 33 & 37

Sequence of Operation

Blower ............................................................................ 38

Part / Full Load Cooling

.......................................................... 38

Part / Full Load Heating .......................................................... 38

Supplementary Electric Heat .................................................. 38

Geothermal Logic Controls ..................................................... 38

High / Low Pressure Switch

................................................... 39

Freeze Stat ............................................................................ 39

Condensate Overow ............................................................ 39

Under/Over Voltage Protection ............................................... 39

Intelligent Reset ...................................................................... 39

Alarm Output

.......................................................................... 39

Pressure Service Ports

........................................................... 39

System Start Up ..................................................................... 39

Refrigerant Charge

Line Set Installation (GTA Coil Sections) ................................ 42

Charge Adjustment .............................................................. 42

Refrigerant Fitting Attachment

............................................ 42

Checking Charge Quantity

..................................................... 42

General / GTADP Coi Sections .............................................. 43

Line Set Installation (GTADP Coil Sections) ........................... 43

General / Topping Off System / Safety Practices ................... 44

Service

Service Hints .......................................................................... 47

Unbrazing System Components ............................................. 47

Compressor Solenoid ............................................................. 47

Troubleshooting GE ECM 2.3 Motors .............................48 & 49

Troubleshooting Table ............................................................ 50

Power Connector Table .......................................................... 50

Ground Source Heat Pump

Performance Report ................................................51-52

Wiring Diagrams

......................................................53-54

Figures

Figure 1A GTA****UD1AA Dimensions ................................. 7

Figure 1B GTADP Fossil Fuel ADP Coil Dimensions ............ 8

Figure 1C GTB1-A Dimensions ............................................. 9

Figure 1D GTC**S2-D Dimensions ..................................... 10

Figure 1E Assembled Upow/Counterow App. .................11

Figure 1F Horizontal App. Dimensions ............................... 12

Figure 2A Upow & Counterow Ducting Cong. ................. 13

Figure 2B Horiz. & Counterow Ducting Cong. .................. 14

Figure 3 Blower Conguration .......................................... 16

Figure 4 Blower Power Connections ................................ 17

Figure 5A Upow Air Filter Applications .............................. 21

Figure 5B Counterow Air Filter Applications ...................... 21

Figure 5C Horiz. Left Discharge Air Filter App. .................... 21

Figure 5D Horiz. Front Discharge App. ............................... 21

Figure 6 Thermostat Wiring .............................................. 23

Figure 7 Circulation System Design ................................. 24

Figure 8 Temperature & Pressure Measurement .............. 26

Figure 9 Perf. Model DORFC-1 Flow Ctr. ......................... 26

Figure 10 Perf. Model DORFC-2 Flow Ctr. ......................... 26

Figure 11 Water Connection Components.......................... 28

Figure 12 Cleaning Water Coil ............................................ 30

Figure 13 Lake or Pond Installation .................................... 31

Figure 14 Wiring Diagram ................................................... 34

Figure 15A Desuperheater Single Tank System ...................... 35

Figure 15B Desuperheater Dual Tank System ....................... 36

Figure 16 Thermistor .......................................................... 37

Figure 17 Component Location .......................................... 40

Figure 18 Control Panel ...................................................... 40

Figure 19 Refrigerant Flow Diagrams ................................. 41

Figure 20 Coil Spacer ......................................................... 43

Figure 21 Pressure Tables .................................................. 45

Figure 22 Control Disassembly ........................................... 49

Figure 23 Winding Test ....................................................... 49

Figure 24 Drip Loop ............................................................ 49

Figure 25 Control Connector Motor Half ............................. 50

Tables

Table 1 Indoor Blower Performance .................................. 5

Table 2 Flow Rates for Various Fluids ............................... 5

Table 3 Specications ....................................................... 5

Table 4 Water Coil Pressure Drop ..................................... 6

Table 5 Electrical Heat Specications ............................. 19

Table 6 Filter Sizing Chart ............................................... 20

Table 7 Control Circuit Wiring .......................................... 22

Table 8 Constant Flow Valves ......................................... 27

Table 9 Pre-Charged Line Set Qty .................................. 42

Quick Reference Troubleshooting Chart ................................ 46