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Installation Instructions

NOTE: 

Read the entire instruction manual before starting the installation.

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 individual instructions packaged with kits or accessories when

installing.

Follow  all  safety  codes. Wear  safety  glasses,  protective  clothing,  and

work gloves.  Use  quenching cloth  for  brazing  operations.  Have a fire

extinguisher available. Read these instructions thoroughly and follow all

warning  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 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 instructions or 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  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.

INTRODUCTION

FMA4X, FMA4P Fan Coils are designed with application flexibility in

mind and are suitable for closet and flush mount installations. Units are

available with field-installed electric heat with circuit breaker. Units are

used  indoors  as  the  fan  coil  for  split-system  heat  pumps  or  air

conditioners. The FMA4P uses a refrigerant piston metering device and

a  3  Speed  PSC  Motor.  FMA4X  uses  a TXV  and  a  5  speed  multi-tap

ECM motor for efficiency. Units are available in 18,000 through 36,000

Btuh nominal cooling capacities.

Field-installed heaters are available in 5, 7.5, and 10 kW sizes. The coil

is equipped with sweat-type connections and is vapor-charged with dry

nitrogen.  The  casing  is  fully  insulated  to  meet  applications  in

conditioned  space.  Additional  insulation  is  required  if  the  unit  is

installed in unconditioned space.

NOTE: 

Nuisance sweating may occur if the unit is installed in a humid

location with low airflow.

Units are designed for upflow applications only. Local codes may limit

this free-air-return type unit to installation in single-level applications.

INSTALLATION

Check Equipment

Unpack unit and move to final location. Remove carton, taking care not

to damage unit. Remove protective sheet metal from the base of the unit,

if  equipped.  Inspect  equipment  for  damage  prior  to  installation.  File

claim with shipping company if shipment is damaged or incomplete. 

Locate rating plate on unit. It contains information needed to properly

install unit. Check rating plate to be sure unit matches job specifications.

A  front  access  panel  is  provided,  which  permits  access  to  blower

assembly and electrical controls for removal and servicing.

NOTE: 

Minimum  clearance  of  21"  (533  mm)  is  required  in  front  of

access panel for servicing only. Installation clearance from combustible

materials  is  0"  (0  mm)  from  cabinet  and  supply-air  duct  (plenum

included).  Make  sure  there  is  adequate  space  on  top  of  unit  for

refrigerant line connections and on bottom of unit for condensate trap

(

Fig. 1

 and 

Fig. 2

).

Mount Fan Coil

Fan Coil Mounting Options

The fan coil  comes  standard with two  different options  for  mounting:

wall mount or frame mount. Both mounting options require the unit to be

level  from  side  to  side  and  from  front  to  back  in  order  to  allow

condensate to properly drain from the unit. Failure to do this will result

in  condensate  leaking  out from  the unit,  potentially causing structural

damage  to  the  surrounding  support  structures,  drywall,  carpet,  etc.

around  the  unit. Also,  both  mounting  structures  require  the  ability  to

accommodate a minimum of load of 150 pounds. Failure to do this will

cause damage to the support structure and potentially damage the unit.

FMA4X, FMA4P

Apartment Fan Coil Unit

WARNING

!

ELECTRICAL OPERATION HAZARD

Failure to follow this warning could result in personal injury or death.

Before installing or servicing the unit, always turn off all power to unit.

There  may  be  more  than  one  disconnect  switch.  Turn  off  accessory

heater  power  if  applicable.  Lock  out  and  tag  switch  with  a  suitable

warning label.

WARNING

!

EXPLOSION HAZARD

Failure to follow this  warning could result in  death, serious  personal

injury, and/or property damage.

Never use air or gases containing oxygen for leak testing or operating

refrigerant compressors. Pressurized mixtures of air or gases containing

oxygen can lead to an explosion.

CAUTION

!

CUT HAZARD

Failure to follow this caution may result in personal injury. 
Sheet metal parts may have sharp edges or burrs. Use care and wear

appropriate  protective  clothing,  safety  glasses  and  gloves  when

handling parts.

Содержание FMA4X

Страница 1: ...installed in unconditioned space NOTE Nuisance sweating may occur if the unit is installed in a humid location with low airflow Units are designed for upflow applications only Local codes may limit this free air return type unit to installation in single level applications INSTALLATION Check Equipment Unpack unit and move to final location Remove carton taking care not to damage unit Remove protec...

Страница 2: ...into place install refrigerant tubing as follows 1 Route tubing to connection points taking care not to block service access 2 Remove plugs from liquid and vapor lines 3 Braze connections using either silver bearing or non silver bearing brazing material Do not use soft solder materials which melt below 800 F 427 C Consult local code requirements Always flow nitrogen through the system refrigerant...

Страница 3: ...r NOTE Unit is intended for non ducted return air applications Product Data sheet includes a list of accessories including louvered wall panels and return air opening grills If ducted return is used airflow must meet criteria established in the Product Data Local codes may limit this unit to single level applications Design the duct system in accordance with ACCA Manual 0 Design for Residential Wi...

Страница 4: ...sured along low voltage wire use No 16 AWG color coded insulated 35 C minimum wire A13092 Fig 5 Transformer Connections NOTE Before proceeding with electrical connections make certain that voltage frequency and phase correspond to that specified on rating plate Also check to be sure that the service provided by utility is sufficient to handle additional load imposed by this equipment Refer to unit...

Страница 5: ...motor and Time Delay Board TDB For units with ECM motor the off delay is programmed into the motor Follow Table 2 ECM Motor Speed Taps the corresponding blower off delays for each speed tap CONTINUOUS FAN Thermostat closes R to G G energizes and completes circuit to indoor blower motor When G is de energized there is a 90 s blower off delay COOLING MODE Thermostat energizes R to G R to Y and R to ...

Страница 6: ...t metal parts may have sharp edges or burrs Use care and wear appropriate protective clothing safety glasses and gloves when handling parts WARNING ELECTRICAL OPERATION HAZARD Failure to follow this warning could result in personal injury or death Disconnect all power to unit before servicing field wires or removing control package The disconnect when used on access panel does not allow safe servi...

Страница 7: ...92 530 Med 845 801 759 716 675 626 573 510 Low 676 640 602 563 523 499 FMA4P3000AL High 1367 1312 1252 1192 1131 1063 990 908 821 Med 1211 1165 1114 1065 1016 960 899 833 748 Low 992 952 912 873 828 782 728 656 627 FMA4P3600AL High 1397 1345 1290 1263 1196 1116 1051 980 907 Med 1298 1252 1198 1147 1094 1037 976 910 842 Low 1149 1105 1056 1008 960 909 856 791 726 Table 5 ECM Airflow Performance Sta...

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