Owner/Operational  Manual  

 

 

 

This  is  an  appendix  to  technical  Manual  400038-­‐UTG-­‐B-­‐0708.      

This  equipment  has  been  modified  from  its  original  configuration.    The  factory  Warranty  is  void.    All  Warranty  claims  will  be  processed  through:      Bristow’s  Heating  and  Cooling  102  S.  John  F.  Kennedy  Ave  Keytesville,  MO    65261    Warranty    See  attached  Warranty  information  for  complete  details.    An  overview  of  the  Warranty  is  one  year  parts  only.    The  Heat  Exchanger  is  NOT  covered  if  it  fails  due  to  freezing.    A  flow  switch  is  installed  on  the  system  to  prevent  this.    If  the  heat  exchanger  fails  due  to  freezing,  it  is  because  the  system  was  left  in  an  area  where  the  ambient  temperature  is  below  freezing.    This  is  neglect  and  will  not  be  covered  under  Warranty.    The  system  must  be  winterized  according  to  instructions  to  prevent  freezing.    Description    The  Bristow  Water  Cooler  is  designed  to  cool  non-­‐potable  water  approximately  15  to  20  degrees.    The  system  was  engineered  to  provide  continuous  cooling  operation  to  lower  incoming  water  temperature.    The  unit  is  designed  as  a  system,  and  will  be  only  sold  as  a  complete  system.    Any  changes  or  deviations  from  the  recommended  accessories  will  result  in  decreased  unit  performance.    Features    Condenser    

• Quality  Condenser  Coils-­‐The  Coil  is  constructed  of  aluminum  micro-­‐channel  tubing  and  enhanced  aluminum  fins  for  increased  efficiency  and  corrosion  protection.  

• Protected  Compressor-­‐The  compressor  is  internally  protected  against  high  pressure  and  temperature.    This  is  accomplished  by  the  simultaneous  operation  of  high  pressure  relief  valve  and  a  temperature  sensor  which  protects  the  compressor  if  undesirable  operating  conditions  occur.    A  liquid  line  filter  –drier  further  protects  the  compressor.  

• Durable  Finish-­‐The  cabinet  is  made  of  pre-­‐painted  steel.    The  pre-­‐treated  galvanized  steel  provides  a  better  paint  to  steel  bond,  which  resists  corrosion  and  rust  creep.    Special  primer  formulas  and  matted-­‐texture  finish  insure  less  fading  when  exposed  to  sunlight.  

• Lower  Installed  Cost-­‐  Installation  time  and  cost  are  reduced  to  easy  power  and  hose  connections.    The  system  is  pre-­‐charged  for  the  required  Freon  level.    The  small  base  dimension  means  less  space  is  required  on  the  ground  or  roof.  

• Top  Discharge-­‐The  warm  air  from  the  top  mounted  fan  is  blown  up  away  from  the  structure  and  any  landscaping.    This  allows  compact  location  on  multi-­‐unit  applications.  

• Low  Operation  Sound  Level-­‐The  upward  air  flow  carries  the  normal  operating  noise  away  from  the  living  area.    The  rigid  top  panel  effectively  isolates  any  motor  sound.    Isolator  mounted  

compressor  and  the  rippled  fins  of  the  condenser  coil  muffle  the  normal  fan  motor  and  compressor  operating  sounds.  

• Low  Maintenance-­‐Long  life  permanently  lubricated  motor-­‐bearings  need  no  annual  servicing.  • Easy  service  access-­‐Fully  exposed  refrigerant  connections,  and  a  single  panel  covering  the  

electrical  controls  makes  for  easy  servicing  of  the  unit.  • Secured  service  valves-­‐Secured  re-­‐usable  service  valves  are  provided  on  both  the  liquid  and  

vapor  sweat  connections  for  ease  of  evacuating  and  charging.  • U.L.  and  C.U.L.  listed-­‐  approved  for  outdoor  application  (Certified  in  accordance  with  the  

Unitary  Small  Equipment  certification  program,  which  is  based  on  ARI  Standard  210/240.    Heat  Exchanger    

• The  heat  exchanger  incorporates  the  latest  in  refrigerant  heat  exchanger  technology.    The  compact  size  and  the  high  level  of  heat  exchange  efficiency  are  achieved  by  the  unique  heat  exchange  tube  geometry.  

• The  enhanced  surface  of  the  copper  tube  provides  surface  extension  of  3.7  times  that  of  smooth  tubing.    The  conical,  co-­‐axial  design  of  the  water  coils  and  the  internal  rifling  ensures  that  water  turbulence  is  maintained  even  at  low  water  flow  rates.  

• On  the  refrigerant  side,  the  close  tolerances  between  the  water  coils  and  the  condenser  shell,  result  in  the  extraordinary  heat  exchange  performance  during  condenser  duty  on  the  cooling  cycle.    As  they  are  designed  to  also  suit  reversible  applications,  the  unique  design  provides  a  high  level  of  performance  when  the  heat  exchanger  is  used  as  a  liquid  chiller.  

• Close  approach  temperature  between  the  Refrigerant  Condensing  Temperature  and  the  Leaving  Water  Temperature  reduces  the  volume  of  condenser  water  to  be  circulated.    Reduces  the  size  of  condenser  water  pipes  and  circulating  pumps.  

• Efficient  Liquid  Refrigerant  Sub  Cooling  as  the  leaving  liquid  is  sub-­‐cooled  by  the  entering  water  due  to  the  counter-­‐flow  design  enhancing  system  efficiency.  

• Drainable  water  tubes  due  to  the  spiral  design  allows  easy  draining  of  the  water.  • NO  oil  trapping  as  a  result  of  the  close  tolerances  in  the  refrigerant  path.  • Improves  heat  pump  performance  with  high  BTU  output  at  low  water  temperatures.  • Low  water  side  pressure  drops  reduces  pump  size  and  operating  cost  • Continuous  water  coils  with  no  internal  joints  has  less  chance  of  leaks  • Compact  size  and  convenient  cylindrical  shape  is  easy  to  insulate  • Reliable  operation,  as  all  heat  exchangers  are  tested  to  660  psi  after  manufacture.  • UL  listed.    Complies  with  Australian  Standard  2971-­‐1987  Serially  Produced  Pressure  Vessels.  

   Controls    

• The  temperature  control  is  a  microprocessor-­‐based  controller  that  is  designed  to  provide  on/off  control  for  refrigeration  applications.  

• With  its  wide  temperature  range,  one  stage  capability,  selectable  heating/cooling  modes  and  multi-­‐voltage  input,  the  controller  is  one  of  the  most  versatile  temperature  controls  available.  

• Its  Digital  Display  makes  the  controller  simple  to  install  and  set  up.    The  standard  digital  display  and  keypad  allow  the  user  to  adjust  the  temperature  settings  with  1  degree  resolution.    Set-­‐

point  temperature,  differential  and  mode  of  operation  can  all  be  selected  using  the  keypad  and  display.  

• When  not  in  the  programming  mode.  The  display  gives  a  constant  readout  of  the  sensor  temperature.    Annunciates  on  the  liquid  crystal  display  also  indicate  when  the  relay  is  energized.  

• The  controller  is  equipped  with  diagnostic  programs  that  check  for  hardware,  software,  or  system  problems  and  display  different  error  codes  to  indicate  where  the  trouble  is.  

• The  controller  also  has  a  keypad  lockout  switch  to  prevent  tampering  with  the  control  settings  by  unauthorized  personnel.    The  switch,  which  is  located  inside  the  enclosure,  can  be  used  to  disable  the  keypad  function.  

 Pump  

• Quiet,  maintenance-­‐free  performance  • Stainless  steel  construction,  corrosion  resistant  • Low  Energy  Consumption  • Built  in  motor  protection  for  long  life  • UL/CSA  listed  • Grunfos  circulators  provide  extremely  quiet  performance  for  various  domestic  water  systems.    

The  automatic  resetting  thermal  impedance  protection  assures  integrated  motor  protection,  low  maintenance  and  longer  life.      

• Grundfos  circulators  are  reliable  and  durable    System  

• This  system  will  provide  a  15  to  20  degree  temperature  drop  from  incoming  water  temperature  and  will  maintain  this  temperature  during  continuous  use  of  4  gallons  per  minute  or  less.  

• The  temperature  control  is  factory  set  at  37  degrees  Fahrenheit.    The  unit  will  cycle  on  when  water  temperature  reaches  38  degrees  Fahrenheit.    As  long  as  entering  water  temperature  is  below  54  degrees  Fahrenheit,  the  system  will  maintain  water  temperature  below  40  degrees  Fahrenheit  exiting  the  tank  to  the  spray  nozzle  at  4  gallons  per  minute  or  less.  

• The  system  is  very  economical  due  to  the  fact  that  it  only  operates  when  in  use.    It  takes  approximately  15  to  20  minutes  to  cool  the  tank  to  operating  temperature  from  65  degrees.      

• The  system  will  operate  at  a  wide  temperature  range  of  ambient  temperature,  from  40  degrees  to  95  degrees  outside  air  temperature.  

• The  system  has  various  built  in  system  protection  safeties.    A  flow  switch  is  integrated  into  the  control  circuit  which  will  shut  down  the  system  if  the  water  stops  flowing  through  the  heat  exchanger  to  minimize  equipment  damage.      

• The  system  has  a  head  pressure  control  kit  installed  so  that  it  can  be  operated  at  lower  ambient  temperatures.    The  condenser  fan  will  cycle  on  and  off  independently  of  the  compressor  to  maintain  proper  system  pressures  to  ensure  maximum  cooling  efficiency.  

• A  factory  hard  start  kit  is  factory  installed  to  ease  compressor  startup  during  high  head  conditions.    This  kit  includes  a  start/run  capacitor  to  maximize  system  efficiency.  

• Although  this  is  a  specialized  piece  of  equipment,  it  uses  standard  “off  the  shelf”  parts  that  are  readily  available  to  ensure  ease  of  service.    Most  residential  HVAC  service  companies  will  be  able  to  completely  service  this  equipment    

• Winterization  is  easy  and  convenient  with  the  quick  connect  hose  connections,  and  a  piping  arrangement  that  minimizes  effort  when  draining  the  system.