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Carrier FA4B Скачать руководство пользователя страница 8

C.

Manufactured Housing

In Manufactured Housing applications, the Code of Federal Regulations, Title 24, Chapter XX, Part 3280.714 requires that supplemental electric
heat be locked out at outdoor temperatures above 40 degrees F., except for a heat pump defrost cycle. Refer to Fig. 13 for typical low voltage wiring
with outdoor thermostat.

D.

Ground Connections

WARNING: According to NEC, ANSI/NFPA 70, and local codes, the cabinet must have an uninterrupted or unbroken

ground to minimize personal injury if an electrical fault should occur. The ground may consist of electrical wire or metal
conduit when installed in accordance with existing electrical codes. If conduit connection uses reducing washers, a separate
ground wire must be used. Failure to follow this warning could result in electric shock, fire, or death.

NOTE:

Use UL-listed conduit and conduit connector for connecting supply wire(s) to unit to obtain proper grounding. Grounding may also be

accomplished by using grounding lugs provided in control box.

E.

Minimum CFM and Motor Speed Selection

Units with or without electric heaters require a minimum CFM. Refer to the unit wiring label to ensure that the fan speed selected is not lower
than the minimum fan speed indicated.

Fan speed selection is done at the fan relay printed-circuit board. To change motor speeds, disconnect fan lead used on relay terminal (SPT) and
replace with motor speed tap desired. (See Fig. 16). Save insulating cap and place on motor lead removed from relay.

NOTE:

In low static applications, lower motor speed tap should be used to reduce possibility of water being blown off coil.

All units have 3 motor speed taps. Low speed (red) is designed for mismatch outdoor unit applications. Medium speed (blue) is designed for
straight matched operations. High speed (black) is used with high external static duct systems of straight matched systems.

Fig. 9—Wiring Layout Air Conditioning Unit

(Cooling Only)

A94058

R

G

W

Y

THERMOSTAT

RED

GRY

WHT

BLU

VIO

BRN

WHT

R

G

W

2

W

3

E

C

FAN COIL

(CONTROL)

C

Y

AIR COND.

Fig. 10—Wiring Layout Air Conditioning Unit

(Cooling and 1-Stage Heat)

A94059

R

G

W

Y

THERMOSTAT

R

G

W

2

W

3

E

C

FAN COIL

(CONTROL)

C

Y

AIR COND.

RED

GRY

WHT

WHT

BLU

VIO

BRN

—8—

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Содержание FA4B

Страница 1: ...se of this the units need special attention in the condensate pan and drain connection area and when brazing tubing These units are available for systems of 18 000 through 60 000 Btuh nominal cooling...

Страница 2: ...ith access panels facing up or down The FH4B003 and 004 size units equipped with accessory cooling coils are not approved for horizontal applications All other units are factory built for horizontal l...

Страница 3: ...l on coil support rail on right side of unit 6 Convert air seal assembly for horizontal right a Remove air seal assembly from coil by removing 4 screws See Fig 5 b Remove air splitter B from coil seal...

Страница 4: ...om Step 10 in the right side of the coil door making sure that the cap snaps and seats cleanly on the back side of the coil door Make sure no insulation interferes with seating of the cap Fig 3 Remova...

Страница 5: ...vapor barrier Units equipped with 20 30kw electric heaters require a 1 in clearance to combustible materials for the first 36 in of supply duct Ductwork Acoustical Treatment Metal duct systems that d...

Страница 6: ...h located within sight from and readily accessible from the unit Fig 6 A Coil in Horizontal Left Application Factory Ready A00072 A B C FACTORY SHIPPED HORIZONTAL LEFT APPLICATION AIR SEAL ASSEMBLY HO...

Страница 7: ...voltage connections between the thermostat the unit and the outdoor equipment If the thermostat is located more than 100 ft from the unit as measured along the low voltage wire use No 16 AWG color co...

Страница 8: ...d in control box E Minimum CFM and Motor Speed Selection Units with or without electric heaters require a minimum CFM Refer to the unit wiring label to ensure that the fan speed selected is not lower...

Страница 9: ...nection first 1 Cut tubing to correct length 2 Insert tube into sweat connection on unit until it bottoms 3 Braze connection using silver bearing or non silver bearing brazing materials Do not use sol...

Страница 10: ...x nut then tighten with wrench 1 2 turn Do not exceed 30 ft lbs PROCEDURE 7 CONDENSATE DRAINS To connect drains the cap openings must be removed Use a knife to start the opening near the tab and using...

Страница 11: ...ee Fig 1 2 4 5 and 6 To prevent property damage and achieve optimum drainage performance BOTH primary and secondary drain lines should be installed and include properly sized condensate traps See Fig...

Страница 12: ...l as possible See Fig 20 Make sure that the outlet of each trap is below its connection to the condensate pan to prevent condensate from overflowing the drain pan Prime all traps test for leaks and in...

Страница 13: ...or W energizes electric heat relay s which completes circuit to heater element s When W is de energized electric heat relay s open turning off heater elements When G is de energized there is a 90 sec...

Страница 14: ...d minimize possible equipment failure it is essential that periodic maintenance be performed on this equipment Consult your local dealer as to the proper frequency of maintenance contract Fig 21 Wirin...

Страница 15: ...required if filter replacement or cleaning on a monthly basis Fig 23 Wiring Layout of Humidifier to Fan Coil with Electric Heat A95295 R G W Y THERMOSTAT R G W2 W3 E C FAN COIL CONTROL C Y AIR COND HU...

Страница 16: ...2003 CAC BDP 7310 W Morris St Indianapolis IN 46231 imfa4b02 16 Book Tab 1 4 3d 2e Catalog No 63FA 4B1...

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