Marvair AVPA24 Manuel d'utilisateur télécharger pdf (Page 5)

5 AVPA & HVEA PDS 4/2012 rev.3

Accessories (cont’d)

Security Cages.

Deters theft of the

air conditioner and

components. Constructed

of1”by11gaugesquare

tubeand3/4”,#9

expanded metal. Hinges

and latch are made

from steel plate. The

complete cage is powder

coated for longevity and

to match the color of

Marvair air conditioners.

Field installed.

Options

The ComPac

I and ComPac

II air conditioners

were designed and are built to stringent requirements

of the communications/electronic shelter. Applications

occur that have special requirements. Numerous

options are available for the ComPac I and ComPac II

air conditioners that meet these special needs.

Hard Start Kit - Used on single phase equipment to

give the compressor higher starting torque under low

voltage conditions. (Field installed only) (Note: Not

recommended for use on scroll compressors.)

Dehumidification – ComPac

I and ComPac

II A/C

– Allows the electric heat to operate simultaneously

with cooling. See Dehumidification Application

Bulletin for details. Note: The electrical characteristics

and requirements of air conditioners with the

dehumidification option are different from standard

air conditioners. Refer to the appropriate Summary

Rating Charts for the electrical characteristics of units

with Electric Reheat.

Coastal Environment Package – ComPac

I A/C

only – Recommended for units to be installed near

an ocean or on seacoast. Includes corrosion resistant

fasteners, sealed or partially sealed condenser fan

motor, protective coating applied to all exposed

internal copper and metal in the in the condenser

section and an impregnated polyurethane on the

condenser coil. See Coastal Environmental Technical

Bulletin for more details.

External Low Noise Blower (ELNB) – ComPac

and ComPac

II A/C – A field installed kit that

consists of a condenser air hood, centrifugal blowers,

controls and a compressor jacket to reduce the

sound level by up to 6 dbA of Marvair ComPac air

conditioners. Available for models AVP30-60. See

External Low Noise Blower Product Data Sheet for

details.

ComPac

II Air Conditioner Transition Curb

– ComPac II A/C only – A sheet metal curb that

enables a 3-1/2, 4 or 5 ton ComPac II air conditioner

to replace a 2-1/2 or 3 ton ComPac II unit. Curb

transitions supply and return openings of the 3-1/2, 4

and 5 ton units to the smaller openings.

Economizer Damper Control – ComPac

II A/C

only – A minimum position potentiometer that can

be adjusted to prevent the economizer damper

from closing completely. This control ensures that

whenever the evaporator fan is operating, fresh air is

being introduced into the building. Factory installed.

Hot Gas By-pass – ComPac

I A/C Only – Used

in specialty applications; i.e., Magnetic Resonance

Imaging (MRI) buildings, to prevent magnetic voltage

disturbance caused by compressor cycling. Hot

gas by-pass option packages are available to allow

operation to 20°F (-7°C). Please refer to Hot Gas

By-pass Application Bulletin for details. Not available

on the AVPA24.

High Filtration – Units are built with larger

blowers/motors for use with higher efficiency filters

with MERV ratings of 11, 13 and 14 when tested

to ASHRAE 52.2. Units with economizers have a

prefilter on the outside air.

Color - ComPac

I and ComPac

II air conditioners

are available in five different cabinet colors -the

standard Marvair

beige, white, gray, brown and

dark bronze. The standard cabinet’s sides, top and

front panels are constructed of 20 gauge painted

steel. As an option, these panels can be built of

16 gauge steel in beige & gray or .050 stucco

aluminum. When the 16 gauge painted steel or the

aluminum is used, only the side, top and front panels

are 16 gauge or aluminum. Contact your Marvair

representative for color chips. The cabinet can also

be constructed of type 316 stainless steel. Two

stainless steel cabinet constructions are available-

the complete cabinet, including most internal sheet

metal or only the exterior sheet metal.

Protective Coil Coatings - Either the condenser

or evaporator coil can be coated, however, coating

of the evaporator coil is not common. For harsh

conditions, e.g., power plants, paper mills or sites

were the unit will be exposed to salt water, the coil

should be coated. Note: Cooling capacity may be

reduced by up to 5% on units with coated coils.

Extended Warranty - A first year labor - Silver,

and a two year labor - Gold, are available.

Dirty Filter Indicator - A factory installed option

that measures the difference in pressure across

the internal filter and illuminates a LED when the

pressure exceeds the desired difference.

Single Point Power Entry - A field installed

option that allows a single power entry into the air

conditioner. Single point power entry should only be

selected when the air conditioner has two electrical

circuits. See the Summary Ratings Charts for units

with two electrical circuits.

Phase Monitor - Monitors 3Ø power supply and will

1 2 3 4 5 6 7 8 9 10 ... 19 20

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Marvair AVPA24 Manuel d'utilisateur Page 5

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