Manual

ManualsBrandsICP ManualsHeating & cooling combined unitOfficial ICP heat pump

10. Rain Shield Installation

121 Installing The Rain Shield

S,ZE.ADHES,VEBAO D.

l_f_SII I IIL_JI I _ PLACEINSIDE

HEATER PLUGS

RAIN SHIELD

connected to an existing system, the ductwork MUST be checked to make

sure it is adequate. Extra runs or larger duct sizes may have to be

installed.

Maximum recommended velocity in trunk ducts is 1000 feet per minute

(5.08m/s). Velocity in branches should not exceed 800 feet per minute

(4.06m/s). Refer to the TechnicalData Label on the unit for unit air volume

requirements and system sizing recommendations.

NOTE: Ductwork sizing affects temperature rise and cooling temperature

differential. Be sure to properly size ductwork to the capacity and airflow

characteristics of your unit. Failure to do so can affect limit controls, com-

pressors, motors, and other components and will lead to premature failure

of components. This will also adversely affect day to day unit perfor-

mance.

Flexible Duct Kits are available from your supplier to effect proper sizing

and installation to Mobile Homes and other standard construction..

Refer to unit rating plate for proper Electric Heat Accessory sizing and see

the Temperature Rise Check section inthe Electric H eat Accessory Instal-

lation Section of this manual.

1. Removeallscrewsfromthe cover plateon Blower/ElectricalAccess Panel.

2. Install adhesive backed gasket on Blower/Electrical Access Panel.

3.Install lower frame of rain shield with 4 screws.

Ductwork Insulation

It is recommended that ductwork installed outdoors have a minimum of 2"

(51mm) of fiberglass insulation and be covered by a weatherproof vapor

barrier that is protected against damage. Caulking and flashings, or other

means adequate to provide a permanent weather seal, must be used.

4.Install rain shield hinged cover with 4 screws.

5. Install circuit breaker filler plates (2 each per unused breaker slot.)

It is recommended that ductwork installed in attics or other areas exposed

to outdoor temperatures have a minimum of 2" (51mm) fiberglass insula-

tion and have an indoor type vapor barrier.

6. Re-install Blower/Electrical Access Panel.

NOTE: VERIFY ALL APPROPRIATE SEALS ARE IN PLACE. SEE

FIGURE 12,

Ductwork Connections

The use of flexible, non-combustible connectors between main trunk

ducts and supply and return air plenums is recommended to minimize

vibration transmission.

11. Air Distribution System

For airflow data (blower performance data, blower speed tap settings,

etc.) see the Technical Data Sheet attached to the unit..

Ductwork

NOTE: Connect supply and return air plenums to unit in a manner that will

allow the top of the unit to be removed without removing plenums. Ple-

nums MUST be individually sealed to unit casing. Ducts MUST be termi-

nated inside structure.

Filters

NOTE: The total heat gain of the structu reto be conditioned as expressed

in total Btu/hr should be calculated by manufacturer's method or in accor-

dance with "A.S.H.R.A.E. Guide" or "Manual J - Load Calculations" pub-

lished by the Air Conditioning Contractors of America. The total heat gain

calculated should be equal to or less than the cooling capacity output

based on D.O.E. test procedures, steady state efficiency times input.

Ductwork, supply registers, and return air grilles MUST be designed and

sized to handle the unit's cooling air volume requirements. If the unit is

All return air MUST pass through a field supplied filter before entering the

unit. If used, an electronic air cleaner MUST be installed in the return air

ductwork. Minimum recommended filter areas are listed in FIGURE 13

and are based on a velocity of 300 ft/min (1.2m/s) for disposable filters

and 500 ft/min (2.54m/s) for washable high velocity filters.

CAUTION

Do NOT operate the unit without all filters in place.

FIGURE 13 Recommended Filter Sizes

NOTE: Some filters are marked with an arrow to indicate the proper direction of air flow through the filter. The air flow direction will be towards

the blower motor. Make sure filter is installed correctly.

Nominal Tons

Air Conditioning

2 1/2

3 1/2

Nominal Air Flow

Cubic Feet

per Minute

700-900

900-1100

1100-1300

1300-1500

1500-1700

1900-2100

Recommended Filter Sizes

Sq. In. Surface Area/Nominal Size

Disposable Filters

400 or 20 x 25

487 or 20 x 30

576 or 14 x 25 (2Req.)

665 or 16 x 25 (2Req.)

753 or 20 x 25 (2 Req.)

960 or 20 x 30 (2 Req.)

Cleanable Filters

246 or 15 x 20

301 or14x25

356 or16x25

411 or 20 x25

466 or 20 x 25

575 or 24 x 25

427 01 1004 01