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FZ4A
NOTE: Read the entire instruction manual before starting the
installation.
TABLE OF CONTENTS
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SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service, maintenance,
or use can cause explosion, fire, electrical shock, or other
conditions which may cause death, personal injury or property
damage. Consult a qualified installer, service agency, or your
distributor or branch for information or assistance. The qualified
installer or agency must use factory- authorized kits or accessories
when modifying this product. Refer to the individual instructions
packaged with kits or accessories when installing.
Follow all safety codes. Wear safety glasses, protective clothing
and work gloves. Have a fire extinguisher available. Read these
instructions thoroughly and follow all warnings or cautions
included in literature and attached to the unit. Consult local
building codes and the current editions of the National Electrical
Code (NEC) NFPA 70.
In Canada, refer to the current editions of the Canadian Electrical
Code CSA C22.1.
Recognize safety information. This is the safety- alert symbol
When you see this symbol on the unit and in instruction manuals,
be alert to the potential for personal injury.
Understand the signal words DANGER, WARNING, and
CAUTION. These words are used with the safety- alert symbol.
DANGER identifies the most serious hazards which will result in
severe personal injury or death. WARNING signifies hazards
Installation Instructions
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which could result in personal injury or death. CAUTION is used
to identify unsafe practices which may result in minor personal
injury or product and property damage. NOTE is used to highlight
suggestions which will result in enhanced installation, reliability, or
operation.
1
!
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2
ELECTRICAL OPERATION HAZARD
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Failure to follow this warning could result in personal injury
2
or death.
2
Before installing or servicing unit, always turn off all power to
unit. There may be more than one disconnect switch. Turn off
4
accessory heater power if applicable. Lock out and tag switch
4
with a suitable warning label.
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CUT HAZARD
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Failure to follow this caution may result in personal injury.
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Sheet metal parts may have sharp edges or burrs. Use care and
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wear appropriate protective clothing and gloves when
handling parts.
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FZ4A models are R- 410A Fan Coils designed for installation
flexibility. These units are designed to meet cabinet air leakage of
less than 2% at 0.5 inches W.C. and cabinet air leakage less than
1.4% at 0.5 inches W.C. when tested in accordance with ASHRAE
193 standard.
A TXV is used on FZ4ANP(024- 061). All FZ4A fan coils use a
multi- tap ECM motor for efficiency. These units have be designed
for upflow, downflow (kit required), and horizontal orientations,
including manufactured and mobile home applications.
These units require a field supplied air filter, and are designed
specifically for R- 410A refrigerant air conditioners and heat
pumps as shipped. These units are available for systems of 24,000
through 60,000 BTUh nominal cooling capacity. Factory-
authorized, field - installed electric heater packages are available in
sizes 5 through 30kW. See Product Data literature for all available
.
accessory kits.
FAN COIL UNITS
FOR R- 410A REFRIGERANT
SIZES 024 TO 061
WARNING
CAUTION
INTRODUCTION
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Related Manuals for Carrier FZ4A
Summary of Contents for Carrier FZ4A
-
Page 1: Table Of Contents
Refer to the individual instructions packaged with kits or accessories when installing. A TXV is used on FZ4ANP(024- 061). All FZ4A fan coils use a multi- tap ECM motor for efficiency. These units have be designed Follow all safety codes. -
Page 2: Heater Packages
HEATER PACKAGES POWER ENTRY FIELD SUPPLIED OPTIONS SUPPLY DUCT This unit may or may not be equipped with an electric heater LOW VOLT ENTRY OPTIONS package. For units not equipped with factory- installed heat, a 018 - 048 21" (533 mm) FRONT SERVICE 060 - 060 24"... - Page 3 Make sure liquid and suction tube grommets are in place to prevent CAUTION air leaks and cabinet sweating. Install after brazing. COIL MOUNTING BLOWER SCREW ASSEMBLY PROPERTY DAMAGE HAZARD Failure to follow this caution may result in product or property damage.
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Page 4: Step 3 - Air Ducts
Step 4 — Electrical Connections ate pan. FZ4A units from the factory protect the low voltage circuit with a 3 Make sure liquid and suction tube grommets are in place to prevent amp automotive type fuse in- line on the wire harness and Does Not air leaks and cabinet sweating. - Page 5 A160009 WARNING Fig. 9 - Wiring Layout Single- Stage Heat Pump Unit ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death. Field wires on the line side of the disconnect found in the fan coil unit remain live, even when the pull- out is removed.
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Page 6: Step 5 - Refrigerant Tubing Connection And Evacuation
Speed-taps 1, 2, and 3 have a 90 second blower off time delay SECONDARY pre-programmed into the motor. Speed-tap 4 is used for electric heat only (with 0 second blower time delay) and the WHITE wire should remain on tap 4. Speed-tap 5 is used for high static applications, second... -
Page 7: Step 6 - Refrigerant Flow- Control Device
Step 6 — Refrigerant Flow- Control Device The FZ4ANP(024- 061) size units come equipped with a R- 410A refrigerant TXV. Always use outdoor units designed to match indoor fan coil applications. FILTER ACCESS CAUTION PANEL SECONDARY DRAIN WITH APPROPRIATE TRAP REQUIRED (USE FACTORY KIT OR FIELD-SUPPLIED TRAP) PRODUCT OPERATION HAZARD... -
Page 8: Step 9 - Sequence Of Operation
Step 9 — Sequence of Operation FAN COIL THERMOSTAT (CONTROL) A. Continuous Fan Thermostat closes R to G. G energizes fan relay on PCB which completes circuit to indoor blower motor. When G is de- energized, there is a 90- sec delay before relay opens. B. -
Page 9: Start- Up Procedures
1. Airflow based upon dry coil at 230v with factory- approved filter and electric heater (2 element heater sizes 024 through 036, 3 element heater sizes 048 through 061). For FZ4A models, airflow at 208 volts is approximately the same as 230 volts because the multi- tap ECM motor is a constant torque motor. - Page 10 Table 3 – FZ4A Air Delivery Performance Correction Component Pressure Drop (in. wc) at Indicated Airflow (Dry to Wet Coil) 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 UNIT SIZE 0.034 0.049 0.063 0.076 0.089 0.070 0.080 0.090...
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