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PF4MNX: Installation Instructions
1 2 3 4 5
Speed Taps may be located on motor,
or on plug close to motor.
1 2 3 4 5
Fig. 14 – Motor Speed Selection
Table 1 – Fan Speed Selection
Low
Tap 1
Medium
Tap 2
High
Tap 3
Electric heat †
Tap 4
Max ‡
Tap 5
† electric heat airflow is same CFM as Tap 3, except 0 sec off delay
‡ high static applications, see airflow tables for max airflow
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.
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. Se
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.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
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
4. Evacuate coil and tubing system to 500 microns using a deep
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.
Refrigerant Flow-Control Device
The 018-060 size units come equipped with a R-410A refrigerant
mechanical TXV. When tightening nuts on a TXV, do not exceed
A11048
20 ft-lbs.
Always use outdoor units designed to match indoor fan coil applications.
90 sec off delay
90 sec off delay
PRODUCT OPERATION HAZARD
90 sec off delay
Failure to follow this caution may result in improper product operation.
0 sec off delay
If using a TXV in conjunction with a single-phase reciprocating
0 sec off delay
compressor, a compressor start capacitor and relay are required.
Consult outdoor unit pre-sale literature for start assist kit part number.
Disassembly
PERSONAL INJURY HAZARD
Failure to follow this warning could result in personal injury.
Remove refrigerant charge from system and ensure there is no pressure
before servicing the TXV.
Fig. 14
for motor speed
NOTE: For Item #1
adjustable wrench to loosen the brass nut (TXV outlet). Then use both
wrenches to loosen Item # 2 (TXV inlet).
1. Use an adjustable wrench with a backup adjustable wrench to
2. For Item #4 - Cut the wire tie and remove the black insulation.
3. Cut the wire tie that holds the TXV equalizer line and bulb from the
4. Remove 2 screws from the TXV bracket. Remove the TXV from
8
CAUTION
!
materials. Do not use solder (materials which melt below 800° F /
427° C). Consult local code requirements.
vacuum method.
CAUTION
!
CAUTION
!
WARNING
!
(Fig.
15): Use an adjustable wrench with a backup
loosen Item # 3 (TXV equalizer line).
Remove the band from around the TXV bulb.
aluminum vapor header tube.
the coil unit.
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