Table of Contents
Advertisement
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 (see Figure 14).
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 for each tap). Also, see
Figure 14 for motor 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
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.
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.
Size and install refrigerant lines according to information
provided with outdoor unit. Route refrigerant lines to the fan
coil in a manner that will not obstruct service access to the
unit or removal of the filter.
10
Figure 14
1. Find the liquid tube grommet in the small- parts bag
and slide it onto the liquid refrigerant line (field
line- set).
2. Remove the lower door. Remove the tubing plate (with
suction tube grommet) and slide the plate with
grommet onto the refrigerant lines (field line- set), away
from braze joints.
3. Remove rubber plugs from coil stubs using a pulling
and twisting motion. Hold coil stubs steady to avoid
bending or distorting.
4. Wrap TXV and nearby tubing with a heat- sinking
material such as a wet cloth.
5. Fit refrigerant lines into coil stubs. Wrap a heat sinking
material such as a wet cloth behind braze joints.
6. Braze using a Sil- Fos or Phos- copper alloy.
7. After brazing, allow joints to cool. Slide tubing plate
back into place and position grommets around suction
and liquid tubes to ensure air seal.
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
factory- made joints.
Specifications are subject to change without notice.
Fan Coils: FEM4X, FEM4P, REM4X, FXM4X
Motor Speed Selection
1 2 3 4 5
Speed Taps may be located on motor,
or on plug close to motor.
1 2 3 4 5
CAUTION
!
to
piston
assembly
L11S018
or
TXV
and
496 01 5503 01
Hide quick links:
Advertisement
Table of Contents
