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FX4D: Installation Instructions

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

3

A07566

Fig. 3 – Slope Coil in Horizontal Left Application (Factory Configuration)

A00072A

Fig. 4 – A-Coil in Horizontal Left Application (Factory Configuration)

9. Make sure liquid and suction tube grommets are in place to prevent

air leaks and cabinet sweating. Install grommets after brazing.

Horizontal Right Conversion of Units with A-Coils

1. Remove blower and coil access panels. (See Fig. 6.)
2. Remove  metal  clip  securing  fitting  panel  to  condensate  pan.

Remove fitting panel.

3. Remove 2 snap-in clips securing A-coil in unit.
4. Slide coil and pan assembly out of unit.
5. Remove horizontal drain pan support bracket from coil support rail

on left side of unit and reinstall on coil support rail on right side of

unit. (See Fig. 7.)

6. Convert air seal assembly for horizontal right.

a. Remove air seal assembly from coil by removing 4 screws. (See 

Fig. 6)

b. Remove air splitter (B) from coil seal assembly by removing 3 

screws. (See Fig. 6 inset)

c. Remove filler plate (A) and install air splitter (B) in place of filler 

plate.

d. Install filler plate (A) as shown in horizontal right application.

e. Remove condensate troughs (C) and install on opposite tube 

sheets.

f. Install hose onto plastic spout.

7. Install horizontal pan on right side of coil assembly.
8. Slide coil assembly into casing. Be sure coil bracket on each corner

of vertical pan engages coil support rails.

9. Reinstall  2  snap-in  clips  to  correctly  position  and  secure  coil

assembly in unit. Be sure clip with large offset is used on right side

of unit to secure horizontal pan.

10. Remove  two  oval  fitting  caps  from  left  side  of  the  coil,  access

panel, and fitting panel.

11. Remove insulation knockouts on right side of coil access panel.
12. Remove 2 oval coil access panel plugs and reinstall into holes on

left side of coil access panel and fitting panel.

13. Install condensate pan fitting caps (from Step 10) in right side of

coil door making sure that cap snaps and seats cleanly on back side

of the coil door. Make sure no insulation interferes with seating of

cap.

14. Reinstall  access  and  fitting  panels,  aligning  holes  with  tubing

connections  and  condensate  pan connections. Be sure to reinstall

metal clip between fitting panel and vertical condensate pan. 

15. Make sure liquid and suction tube grommets are in place to prevent

air leaks and cabinet sweating.

UNIT

FIELD
SUPPLIED
HANGING
STRAPS

LOW VOLT
ENTRY
OPTIONS

POWER
ENTRY OPTIONS

SECONDARY
DRAIN

018-048   21" (533 mm)
060-060   24" (610 mm) 
FRONT SERVICE
CLEARANCE
(FULL FACE
OF UNIT)

SECONDARY
DRAIN

A-COIL

HORIZONTAL LEFT

PRIMARY
DRAIN

PRIMARY
DRAIN

1.75" (44 mm) 
FILTER ACCESS
CLEARANCE

A

B

C

FACTORY SHIPPED

HORIZONTAL LEFT

APPLICATION

AIR SEAL
ASSEMBLY

HORIZONTAL

DRAIN PAN

REFRIGERANT

CONNECTIONS

SECONDARY DRAIN

HORIZONTAL LEFT

PRIMARY DRAIN

HORIZONTAL LEFT

COIL

SUPPORT

RAIL

COIL

BRACKET

DRAIN PAN

SUPPORT

BRACKET

COIL

BRACKET

Summary of Contents for FX4D 019

Page 1: ...quipped with an electric heater package For units not equipped with factory installed heat a factory approved field installed UL listed heater package is available from your equipment supplier See unit rating plate for a list of factory approved heaters Heaters that are not factory approved could cause damage which would not be covered under the equipment warranty If fan coil contains a factory in...

Page 2: ...asing flange 3 Remove coil assembly 4 Lay fan coil on its right side and reinstall coil assembly with condensate pan down See Fig 5 5 Attach coil to casing flange using previously removed coil mounting screw 6 Make sure pan cap in fitting door is properly seated on fitting door to retain low air leak rating of the unit 7 Add gaskets from kit KFAHD 8 Align holes with tubing connections and condensa...

Page 3: ...de coil assembly into casing Be sure coil bracket on each corner of vertical pan engages coil support rails 9 Reinstall 2 snap in clips to correctly position and secure coil assembly in unit Be sure clip with large offset is used on right side of unit to secure horizontal pan 10 Remove two oval fitting caps from left side of the coil access panel and fitting panel 11 Remove insulation knockouts on...

Page 4: ...to top of fan coil using No 10 self tapping screws Angle strap down and away from back of fan coil remove all slack and fasten to wall stud of structure using 5 16 lag screws Typically both sides of the fan coil b If fan coil is against wall secure fan coil to wall stud using 1 8 3mm wide right angle brackets Attach brackets to fan coil using No 10 self tapping screws and to wall stud using 5 16 l...

Page 5: ...ts with a factory installed disconnect with pull out removed service and maintenance can be safely performed on only the load side of the control package LINE VOLTAGE CONNECTIONS If unit contains an accessory electric heater remove and discard power plug from fan coil and connect male plug from heater to female plug from unit wiring harness See Electric Heater Installation Instructions For units w...

Page 6: ...HAOT0201SEC must be used A09387 Fig 13 Wiring Layout Heat Pump Unit Cooling and 2 Stage Heat with 2 Outdoor Thermostats A09388 Fig 14 Wiring Layout Heat Pump Unit Cooling and 2 Stage Heat for Manufactured Housing A05182 Fig 15 Transformer Connections R G W Y THERMOSTAT RED GRY WHT BLU VIO BRN WHT R G W2 W3 E C FAN COIL C Y AIR COND R G W Y THERMOSTAT R G W2 W3 E C FAN COIL C Y AIR COND RED GRY WHT...

Page 7: ...LOW CONTROL DEVICE The FX4D is equipped with PuronR refrigerant TXV Use outdoor units designed for PuronR refrigerant only CONDENSATE DRAINS 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 t...

Page 8: ...gizes R to G R to Y and R to O heat pump only G energizes fan relay on PCB which completes circuit to indoor blower motor When G is de energized there is a 90 second delay before fan relay opens NOTE Speed taps 1 2 and 3 have a 90 second blower off delay Speed taps 4 and 5 have 0 second blower off delay HEAT PUMP HEATING WITH AUXILIARY ELECTRIC HEAT Thermostat energizes R to G R to Y and R to W G ...

Page 9: ... in poor unit performance and or product damage Never operate unit without a filter Factory authorized filter kits may be used when locating the filter inside the unit For those applications where access to an internal filter is impractical a field supplied filter must be installed in the return air duct system R G C E L O Y THERMOSTAT R R C O Y G C W2 W2 W2 W3 E FAN COIL HEAT PUMP CONTROL RED GRY...

Page 10: ... 02 2 8 10 0 3 9 15 0 3 9 15 02 4 20 02 4 20 04 6 18 24 30 10 Table 5 Airflow Performance CFM in Cooling Mode Model Size Blower Speed EXTERNAL STATIC in wc 0 10 0 20 0 30 0 40 0 50 0 60 FX4D 019 Tap 5 776 745 696 660 609 572 Tap 4 683 644 589 548 494 461 Tap 3 683 644 589 548 494 461 Tap 2 631 563 500 443 409 361 Tap 1 625 524 457 417 367 319 FX4D 025 Tap 5 956 920 891 851 816 780 Tap 4 825 795 75...

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