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PHD4, WPH4: Owner’s Information Manual

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

4

A10063

Fig. 3 – Small Chassis Filter Access

Replacing or inspecting filters in units with 

economizers

Small Chassis (See 

Fig. 3

)

1. Remove return  air  duct  cover at  rear of unit  using a 5/16-in. nut

driver.

2. Remove  the  filter(s)  by  pulling  it  out  and  through  the  unit  duct

opening. If filter is dirty, replace both filters with new ones. 

A10062

Fig. 4 – Large Chassis Filter Access

When installing the new filters, note the direction of the airflow arrows

on the filter frame, which should be pointing at the indoor coil.

3. Reinstall duct cover ensuring opening is air and water tight.

Large Chassis (See 

Fig. 4

)

1. Remove filter access door using a 5/16-in. nut driver.
2. Remove  the  filter(s)  by  pulling  it  out  and  through  the  unit  filter

access door. If filter is dirty, replace both filters with new ones. 

Units with bent indoor coils, install 24 x 18 x 1 (610 x 457 x 25 mm)

filter first and then install 24 x 16 x 1 (610 x 406 x 25) filter.
When installing the new filters, note the direction of the airflow arrows

on the filter frame, which should be pointing at the indoor coil.

3. Reinstall filter access door ensuring opening is air and watertight.

Fans and Fan Motor

Periodically  check  the  condition  of  fan  wheels  and  housings  and

fan-motor  shaft  bearings.  Contact  your  dealer  for  the  required  annual

maintenance.

Indoor and Outdoor Coils

Cleaning of the coils should only be done by qualified service personnel.

Contact your dealer for the required annual maintenance.

Condensate Drain

The drain pan and condensate drain line should be checked and cleaned

at the same time the cooling coils are checked by your dealer.

Compressor

All compressors are factory shipped with a normal charge of the correct

type and quantity of refrigeration grade oil. 

Condenser Fan

The fan must be kept free of all obstructions to ensure proper cooling.

Contact your dealer for any required service.

Electrical Controls and Wiring

Electrical controls are difficult to check without proper instrumentation.

If there are any discrepancies in the operating cycle, contact your local

dealer and request service.

Refrigerant Circuit

The refrigerant circuit is difficult to check for leaks without the proper

equipment. If inadequate cooling is suspected, contact your local dealer

for service.

Unit Panels

After  performing  any  maintenance  or  service  on  the  unit,  be  sure  all

panels are fastened securely in place to prevent rain from entering unit

cabinet and to prevent disruption of the correct unit airflow pattern.

Regular Dealer Maintenance (Also refer to 

Table 2

)

In addition to the type of routine maintenance you might be willing to

perform, your unit should be inspected regularly by a properly trained

service technician. An inspection (preferably each year) should include

the following:

1. Inspection  and,  if  required,  cleaning  of  the  outdoor  and  indoor

coils.

2. Inspection and, if required, cleaning of the indoor coil drain pan.
3. Inspection and cleaning of blower wheel housing and motor.
4. Inspection of all supply and return air ducts for leaks, obstructions,

and insulation integrity. Any problems found should be resolved at

this time.

5. Inspection of the unit base to ensure that no cracks, gaps, etc., exist

which may cause a hazardous condition.

6. Inspection of the unit casing for signs of deterioration.
7. Inspection of all electrical wiring and components to assure proper

connection.

8. Inspection  for  leaks  in  the  refrigerant  circuit.  Pressure    and

temperature check to determine appropriate refrigerant charge.

9. Operational  check  of  the  unit  to  determine  working  conditions.

Repair or adjustment should be made at this time.

RETURN

DUCT COVER

(Remove for

filter access)

SMALL CHASSIS

LARGE CHASSIS

FILTER

ACCESS

PANEL

WARNING

!

PERSONAL INJURY AND UNIT DAMAGE HAZARD

Failure to follow this warning could result in personal injury, death or

property damage.

Do not poke sticks, screwdrivers, or any other object into revolving fan

blades.

WARNING

!

EXPLOSION, BURN AND ENVIRONMENTAL HAZARD

Failure to follow this warning could result in personal injury, death or

property damage.

System  under  pressure.  Relieve  pressure  and  recover  all  refrigerant

before  system  repair  or  final  unit  disposal.  Use  all  service  ports and

open all flow-control devices, including solenoid valves.

Содержание PHD4

Страница 1: ...s 24 60 Single Packaged Heat Pump System with R 410A Refrigerant Technician Name Phone Number Address Company Name Date Installed NOTE TO EQUIPMENT OWNER For your convience please record the model and serial numbers of your new equipment in the spaces provided This information along with the installation data and dealer contact information will be helpful should your system require maintenance or ...

Страница 2: ...or unit and for water to drain from the outside of unit Do not be alarmed To start the unit 1 Turn on the electrical power supply to unit 2 Set MODE control to desired mode and select temperature To shut off unit NOTE If the unit is being shut down because of a malfunction call your dealer as soon as possible 1 Set system MODE control to OFF 2 Turn off the electrical power supply to unit Cooling M...

Страница 3: ... an air filter in place before it can be operated These filters should be located in at least one of two places In many applications the installer will provide return air filter grilles mounted on the wall or ceiling of the conditioned structure In the instance of filter grilles the filters can simply be removed from the grille and replaced The other typical application is an accessory filter rack...

Страница 4: ...heck without proper instrumentation If there are any discrepancies in the operating cycle contact your local dealer and request service Refrigerant Circuit The refrigerant circuit is difficult to check for leaks without the proper equipment If inadequate cooling is suspected contact your local dealer for service Unit Panels After performing any maintenance or service on the unit be sure all panels...

Страница 5: ... sure they are open and unobstructed If these checks do not reveal the cause call your servicing dealer If your unit is not operating at all check the following list for easy solutions Check to be sure that your thermostat temperature selector is set below the indoor temperature during the cooling season or above the indoor temperature during heating season Be sure the SYSTEM switch or MODE contro...

Страница 6: ...ctions Inspect and perform functional test of equipment as needed to ensure proper function Repair or replace damaged or overheated components and wiring X Inspect electric heater if installed Check for signs of overheating of elements controls and wiring Make sure heater elements are not broken or electically shorted X Check refrigerant system subcooling and or superheat system dependent X Inspec...

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