Condensate Drains; Refrigerant Flow-Control Device - Carrier FZ4ANP Installation Instructions Manual

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Table Of Contents

Table of Contents

FZ4ANP: Installation Instructions

To change motor speeds disconnect the BLUE fan lead from motor

connector terminal #2 (factory default position) and move to desired

speed-tap; 1, 2, 3, or 5.

On single stage systems with dehum and two stage systems, use blower

speed taps 2 and 3 for straight match systems and blower speed taps 1

and 2 for up-sized indoor systems..

Speed-taps 1, 2, and 3 have a 90 second blower off time delay

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, but has

a 0-second blower time delay pre-programmed into the motor. See

Airflow Performance tables for actual CFM. Also, see

speed selection location.

NOTE: In low static applications, lower motor speed tap should be used

to reduce possibility of water being blown off coil.

REFRIGERANT TUBING CONNECTION AND

EVACUATION

Use accessory tubing package or field-supplied tubing of refrigerant

grade. Suction tube must be insulated. Do not use damaged, dirty, or

contaminated tubing because it may plug refrigerant flow-control

device. ALWAYS evacuate the coil and field-supplied tubing to 500

microns before opening outdoor unit service valves.

CAUTION

PRODUCT DAMAGE HAZARD

Failure to follow this caution may result in product or property damage.

A brazing shield MUST be used when tubing sets are being brazed to

the unit connections to prevent damage to the unit surface and

condensate pan fitting caps.

Units have sweat suction and liquid tube connections. Make suction tube

connection 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 solder (materials which melt below 800°F /

427°C). Consult local code requirements.

4. Evacuate coil and tubing system to 500 microns using deep vacuum

method.

CAUTION

PRODUCT DAMAGE HAZARD

Failure to follow this caution may result in product or property damage.

Wrap a wet cloth around rear of fitting to prevent damage to TXV and

factory-made joints.

CAUTION

PRODUCT OPERATION HAZARD

Failure to follow this caution may result in improper product operation.

If using a TXV in conjunction with a single-phase reciprocating

compressor, a compressor start capacitor and relay are required.

Consult outdoor unit pre-sale literature for start assist kit part number.

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.

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

To connect drains, the cap openings must be removed. Use a knife to

start the opening near the tab and using pliers, pull the tab to remove the

disk. Clean the edge of the opening if necessary and install the

condensate line. Finally caulk around the lines where they exit the fitting

to retain the low leak rating of the unit.

PRODUCT OR PROPERTY DAMAGE HAZARD

Failure to follow this warning caution may result in product or property

Fig. 14

for motor

damage.

The conversion of the fan coil to downflow requires special procedures

for the condensate drains on both A-coil and Slope-coil units. The

vertical drains have an overflow hole between the primary and

secondary drain holes. This hole is plugged for all applications except

downflow, and must be used for downflow. During conversion process,

remove plastic cap covering vertical drains only and discard. Remove

plug from overflow hole and discard. At completion of downflow

installation, caulk around vertical pan fitting to door joint to retain low

air leak performance of the unit.

Units are equipped with primary and secondary 3/4-in. FPT drain

connections. For proper condensate line installations see

Fig.

Fig. 4

optimum drainage performance, BOTH primary and secondary drain

lines should be installed and include properly-sized condensate traps

(Fig. 15

and

is recommended that PVC fittings be used on the plastic condensate pan.

Finger-tighten plus 1-1/2 turns. Do not over-tighten. Use pipe dope.

NOTE: When connecting condensate drain lines, avoid blocking filter

access panel, thus preventing filter removal. After connection, prime

both primary and secondary condensate traps.