background image

7

Floor Mounted

Make sure the unit is level and mounted on a field-supplied

platform and rubber pads with a minimum height to ensure

proper fall on the condensate line. A slope of no less than

2%  is  recommended.  Other  installation  provisions  may  be

necessary according to job specifications.

Suspended

The HPX  horizontal  water  source  heat  pump  is  equipped

with steel hanging mounts for suspended installations. The

unit  should  be  lifted  into  position  by  supporting  the  unit

with  the  skid  used  for  shipping.  Suspend  the  unit  from  its

four  corners  with  field  supplied  3/8  “all-thread”  rods.

Secure the rods into the holes in the steel hanging mounts

and secure with nuts and lock-washers.

Duct Work

For  new  installations  duct  work  should  be  designed  and

installed using current ASHRAE procedures which take into

consideration  proper  air-flow,  proper  distribution,  sound

level considerations, efficiency, durability, safety, etc.
For existing duct systems please make sure unit fits the duct

system in the aspects of flow rate, pressure drop, insulation

and sound level. Any air leaks in existing system should be

found and repaired.
Flexible connectors are important for connections of unit to

metal  ductwork  to  eliminate  transfer  of  vibrations.  Duct-

work should be properly insulated to avoid energy loss and

condensation during the cooling cycle.

Sealing

It is very important to keep outside air from infiltrating the

unit  cabinet.  Seal  all  piping  penetrations  with  Armaflex,

Permagum, or other suitable sealant. Also seal around drain

connections,  electrical  connections,  and all  other  inlets

where air may enter the cabinet. This is especially important

when the unit is installed in an unconditioned area.

Supplementary Cooling / Heating

When  heat  is  called  for,  unit  shall  switch  to  mechanical

heating.  Should  the  unit  have  hot water,  or  steam

capabilities, it shall be activated according to controls.

Unit with Hot Water Coil

Water  supply  lines  must  be  insulated,  properly  fastened,

drained and supported according to the local code require-

ments.

Unit with Steam Coils

The  unit  MUST  be  installed  high  enough  to  allow  for  a

minimum  of  one  (1)  foot  condensate  drop  leg  off  of  the

steam coil (or as recommended by the steam trap manu-

facturer). Lines should be insulated with approved insulat-

ion  and  be  properly  fastened,  sloped  and  supported

according to local code requirements.

Unit with Water-Side Economizer

Water supply lines must be insulated with closed cell type

pipe insulation or insulation that includes a vapor barrier.

Lines should be properly fastened, drained and supported

according to local code barriers.

Water Line Piping

Connect water  supply and return lines to  water inlet and

outlet. Flexible hose may be used for waterline to reduce

vibration and improve unit serviceability. Make sure hoses

and  or  pipes  are  suitable  for  water  system  pressure  and

sized for proper flow-rate.

Galvanized  pipe  or  fittings  are

NOT recommended for use with

the HPX Series heat pumps due

to  possible  galvanic  corrosion.

All  plumbing,  both  supply  and

discharge  water  lines  must  be

sized to handle water flow with

a proper pressure drop.

Pipe will sweat if low temperature water run through the

supply and discharge lines. These lines should be insulated

to prevent damage from condensation.
Solenoid valves if used should be a slow closing diaphragm

type. If not, water hammer may occur on unit start-up and

shut-down. Placing the solenoid valve on the outlet side of

the system helps in the mitigation of this situation.

Summary of Contents for HPX Series

Page 1: ...words NOTE CAUTION and WARNING NOTES are intended to clarify or make the installation easier CAUTIONS are given to prevent equipment damage WARNINGS are given to alert reader that personal injury and or equipment damage may result if installation and or service are not handled properly Rev 022014003 MIAMI HEAT PUMP ...

Page 2: ... and Installation Clearance Mounting and Suspension Duct Work Sealing Supplementary Cooling Heating Water Line Piping Condensate Piping Electrical Wall Thermostat Handset Filters 4 Completion General Check out Start up Commissioning 5 Operation and Maintenance General Maintenance and Schedule Filters Blower Assembly Indoor Coil s Water Heat Exchanger Service 6 Troubleshooting ...

Page 3: ...coil expansion valve reversing valve centrifugal blower high efficiency motor a control panel with all necessary protection devices and safety circuit Units are designed to operate with an entering water temp erature between 50 0 F and 100 0 F suitable for a cooling tower boiler application but an extended range is available down to 25 0 F for Geo Thermo applications for a Geo Thermo application s...

Page 4: ...nce can cause property damage personal injury or loss life A qualified installer or service agency must perform installation and service RISK OF ELECTRICAL SHOCK Unit may have multiple power supplies Turn the electrical power of the unit OFF and disconnect switch es before attempting to perform any service or maintenance RISK OF INJURY FROM HOT PARTS Discon nect all power close all isolation valve...

Page 5: ... file a freight claim and to schedule an inspection 5 After losses have been acknowledged by the freight carrier call the factory for a repair or replacement part quote at 866 407 8535 6 With permission of freight carrier order parts and or make repairs 7 If repairs must be made to damaged goods certain equipment alteration repair and manipulation of equipment without the manufacturer s consent ma...

Page 6: ...t is constructed of sturdy materials it is advised to avoid impacts and handling methods that may damage internal apparatus and struc ture or the exterior surfaces of the unit Take care not to apply destructive force to coils coil and drain stub outs or other parts protruding beyond the extents of the unit casing Always handle the unit by its exterior casing and never by any of the protruding part...

Page 7: ...he unit is installed in an unconditioned area Supplementary Cooling Heating When heat is called for unit shall switch to mechanical heating Should the unit have hot water or steam capabilities it shall be activated according to controls Unit with Hot Water Coil Water supply lines must be insulated properly fastened drained and supported according to the local code require ments Unit with Steam Coi...

Page 8: ...nel should clean drain pans drain lines or the insides of equipment Electrical WARNING All electrical works need to be performed by a licensed electrician and according to all applicable codes Check the unit data plate to make sure it matches with the power supply Proper fuses or HACR circuit breakers should be installed See unit s nameplate for minimum amps and maximum fuse breaker Connect power ...

Page 9: ... a free spinning blower wheel and wheel fitting access pan els Air handlers should not be operated without proper ductwork and access panels installed except as required during start up and air balancing 1 Check all electrical connections to be sure they are tight 2 Open all access panels and remove all shipping screws or restraints 3 Clean out any debris that may have been left 4 Check belt align...

Page 10: ...ualified personnel should not attempt to adjust air circulation as all system has unique operating characteristics Professional air balance specialists should be employed to establish actual operating conditions and to configure the air delivery sys tem for optimal performance Water Balancing When unit is one of many at the same water system a specialist with a complete working knowledge of water ...

Page 11: ... wheels are necessary to reduce electrical use maintain capacity and reduce stress on the unit The blower wheel and blower section need to be ins pected periodically and cleaned of dust or debris To ins pect and clean the blower set thermostat to OFF position turn the electrical power to the unit to OFF position at the disconnect switch Clean the assembly check for looseness check screws for tight...

Page 12: ...m refrigerant evacuate and recharge with factory recommended charge High Pressure Check defective or improperly calibrated high pressure switch Unit OFF on low pressure switch Suction Pressure too Low In COOLING mode lack of or inadequate air flow Entering air temperature too cold Blower inoperative clogged filter or restriction in ductwork In HEATING mode lack of or inadequate water flow Entering...

Reviews: