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handler must be cleaned and/or repaired if found to 
be dirty, damaged, or malfunctioning in any way by 
a qualified HVAC technician. The air handler shall be 
inspected and approved by applicable local authority 
even if this requires redundant inspections.

•  The  serial  number  for  the  air  handler  used  during 

construction must be submitted in writing (fax and 
email also acceptable). This information will be used to 
track the long-term affects of air handler usage during 
construction. Proof of this submittal shall be available for 
the final inspection of the air handler prior to occupancy.

Installation in a Garage

 WARNING:

Do not place combustible materials on or against 
the cabinet. Do not place flammable materials, 
(gasoline, paint thinners, etc.) or any other 
flammable vapors and liquids, in the vicinity 
of the air handler.

The B5 Series air handler may be installed in a residential 
garage with the provision that the unit must be located or 
protected to prevent physical damage by vehicles.

as the opening provided on the blower coil unit. The 
ducts should be appropriately sized to the capacity of 
the air handler to ensure its proper airflow rating.

•  Use  transition  fittings  if  the  supply  and/or  return  air 

openings of the unit do not match the duct openings. 
These transitions should be dimensioned in accordance 
with standard practice as specified in the ASHRAE 
recommendations for duct transitions.

•  Flexible connectors should be used between the unit 

and the ductwork to prevent transmission of vibration 
from the unit to the structure. If electric heater kits are 
installed, heat resistant material must be used for the 
flexible connector at the supply air end of the unit.

•  Seal  all  connections  and  joints  with  industrial  grade 

sealing tape or liquid sealant. Requirements for sealing 
ducts vary from region to region. Consult with local 
codes for requirements specific to your area.

Unconditioned Spaces
All duct work passing through unconditioned space must 
be properly insulated to minimize duct losses and prevent 
condensation. Use insulation with an outer vapor barrier. 
Refer to local codes for insulation material requirements.

Air Filters
B5 Series Air Handlers are not supplied with an air filter 
when shipped from the factory. The installer must provide 
a high velocity filter that is appropriately sized to the return 
air duct opening or filter rack located in the bottom of the 
unit. Accessing the filter does not require tools and can 
be removed from the front of the unit by removing the filter 
door. See Unit Maintenance (page 14) for filter sizes and 
other important information.

 WARNING:

Never operate the air handler without a filter 
or with doors removed. Dust and lint can build 
up on internal components, resulting in loss of 
efficiency, equipment damage, and possible fire.

Acoustical Duct Work

• 

Certain installations may require the use of acoustical 
lining inside the supply duct work. Acoustical insulation 
must be in accordance with the current revision of the 
Sheet Metal and Air Conditioning Contractors National 
Association (SMACNA) application standard for duct 
liners. Duct lining must be UL classified batts or blankets 
with a fire hazard classification of FHC-25/50 or less.

•  Fiber duct work may be used in place of internal duct 

liners if the fiber duct work is in accordance with the 
current revision of the SMACNA construction standard 
on fibrous glass ducts. Fibrous duct work and internal 
acoustical lining must be NFPA Class 1 air ducts when 
tested per UL Standard 181 for Class 1 ducts.

• 

Damping ducts, flexible vibration isolators, or pleated 
media-style filters on the return air inlet of the air 
handler may be used to reduce the transmission of 

Plenums & Air Ducts

• 

Plenums and air ducts should be installed in 
accordance with the standards of the National Fire 
Protection Association Standard for Installation of 
Air Conditioning Systems (NFPA 90A), Standard for 
Installation of Residence Type Warm Air Heating 
and Air Conditioning Systems (NFPA 90B), and all 
applicable local codes. NFPA publications are available 
by writing to: National Fire Protection Association, 
Batterymarch Park, Quincy, ME 02269 or visit 

 

www.NFPA.org online.

 WARNING:

All return ducts must be secured to the air 
handler using appropriate methods. All return 
ducts must be adequately sealed. When return 
air is provided through the bottom of the unit, 
the joint between the air handler and the return 
air plenum must be air tight.

Return air and circulating air ducts must not be 
connected to any other heat producing device 
such as a fireplace insert, stove, etc. This may 
result in fire, explosion, carbon monoxide 
poisoning, personal injury, or property damage.

•  Design the duct work according to methods described 

by the Air Conditioning Contractors of America (ACCA).

• 

This unit is designed only for use with a return and supply 
duct. The return air duct must have the same free area 

Содержание B5BM

Страница 1: ...ion service adjustment or maintenance may cause explosion fire electrical shock or other hazardous conditions which may result in personal injury or property damage Unless otherwise noted in these ins...

Страница 2: ...ns 11 Control Board 12 Twinning 12 Heater Kits 12 Startup Adjustments 12 Before You Start the Unit 12 Refrigerant Charging 13 Air Circulation 13 Running the Blower Continuously 13 Continuous Low Speed...

Страница 3: ...his unit Unqualified individuals should not attempt to interpret these instructions or install this equipment Failure to follow safety recommendations could result in possible damage to the equipment...

Страница 4: ...ervice access and noise The dimensions of the room or alcove must be able to accommodate the overall size of the unit and the installation clearances listed in Figure 1 Physical dimensions for this ai...

Страница 5: ...duct opening or filter rack located in the bottom of the unit Accessing the filter does not require tools and can be removed from the front of the unit by removing the filter door See Unit Maintenanc...

Страница 6: ...hen installing the unit in an upflow configuration All return air must enter from the bottom of the unit A typical upflow unit is shown in Figure 2 Downflow Installations Thedownflowaccessorykit SeeTe...

Страница 7: ...orizontal drain pan into the open and unused drain hole in the drain pan at the bottom of the unit to block bypass air 4 Remove the corresponding drain line knockout from the coil access door to allow...

Страница 8: ...quid lines must be sized in accordance with the condensing unit specifications See Figure 11 page 16 for liquid and suction line locations When connecting refrigerant linesets together it is recommend...

Страница 9: ...h lineset tubes to proper length in accordance with the outdoor unit specifications Verify the ends are round clean and free of any burrs 4 Positiongrommetonlinesetwithsufficientdistanceaway from braz...

Страница 10: ...ccurring 7 Wrap the refrigerant lines with pressure sensitive neoprene or other suitable material especially where the lines enter the opening in the sheet metal 8 Evacuatethesystemofmoistureandnon co...

Страница 11: ...the unit Use only copper wire for the line voltage power supply to this unit Use proper code agency listed conduit and a conduit connector for connecting the supply wires to the unit Aluminum supply...

Страница 12: ...vided 3 Connect the heater kit plug with the mating receptacle on the air handler control board If a heater kit is not installed 1 Remove the 2 wire plug of the air handler by cutting the wires and di...

Страница 13: ...un for several minutes and then set the thermostat s temperature below room temperature Verify the blower cycles off with the thermostat Minimum Electric Heat Airflow The minimum electric heat airflow...

Страница 14: ...he factory It is recommended that the filter be cleaned or replaced monthly Newly built or recently renovated homes may requiremorefrequentchanginguntiltheconstructiondust has minimized Filter sizes s...

Страница 15: ...11 4 15 8 17 8 11 4 3 1 4 2 5 8 11 8 K O typ 13 4 K O typ 1 7 8 3 5 8 5 5 8 DETAIL D 3 1 4 2 1 4 15 1 4 13 SUCTION LIQUID W 1 1 8 1 7 8 7 8 K O H 22 A Cabinet Size H W A Detail D A 43 5 16 14 3 16 12...

Страница 16: ...Motor Mount Kit Blower Motor Transformer Capacitor Circuit Breaker 60A Heating Element Assembly Filter Tracks Blower Wheel Blower Housing Motor Control Board Control Board Filter Door Upper Door Assem...

Страница 17: ...1270 1196 1113 1018 913 Corrected ESP1 0 00 0 00 0 00 0 09 0 23 0 36 0 50 0 64 42 48K B Cabinet Low 1324 1302 1271 1233 1187 1134 1072 1003 Corrected ESP1 0 00 0 06 0 17 0 27 0 38 0 49 0 61 0 72 Medi...

Страница 18: ...Conditioner with Variable Speed Air Handler Typical 2 Stage Cooling Heat Pump with Optional Outdoor Thermostat Variable Speed Air Handler W2 W1 O Y Y2 G R C W2 W1 O Y Y2 G R C Y2 Y2 Y2 Y2 W1 W3 R Y1...

Страница 19: ...19 C R G Y Y2 O W1 W2 Y1 24VAC COM FUSE P2 P3 X13 COM X13 HEAT X13 COOL XFMR L1 VSPOWER L1 L2COM L2 L2 Figure 13 Motor Control Board...

Страница 20: ...8 9 10 11 12 13 14 15 16 G C O HUM Y1 W R HUM Y Y2 L2 COM 2 L2 L2COM L1 VS POWER XFMR COOL HEAT Y1 HEATER PLUG P3 1 2 3 4 5 6 7 8 YELLOW BLUE RED JUMPER SELECTOR SWITCHES NOTE 1 ON 0 OFF 710544D Repl...

Страница 21: ...IELD WIRING LEGEND LOW VOLTAGE HIGH VOLTAGE The blower motor speed tap connection may not be as shown See the Installation Instructions Disconnect all power before servicing Transformer may have a dua...

Страница 22: ...ct all power before servicing 3 Transformer may have a dual voltage primary tap Match the tap position with the supply voltage used 4 If the Internal wiring is replaced use only 105 C copper wire of t...

Страница 23: ...K GREY BLACK GREY BLUE ORANGE POWER PLUG LIMIT RED RED RED RED BLACK BLACK RED BLACK RELAY RELAY TERMINAL BLOCK for select models only CIRCUIT BREAKER Circuit breaker models only BLUE W2 W1 O Y Y2 G R...

Страница 24: ...pply voltage used 4 If the Internal wiring is replaced use only 105 C copper wire of the same gauge W2 W1 O Y Y2 G R C 4 SPD MOTOR 1 2 3 5 6 4 TRANSFORMER 24V BLACK RED WHITE BLACK WHITE FUSE L2 COM 2...

Страница 25: ...1 2 3 5 4 TRANSFORMER 24V BLACK RED WHITE BLACK WHITE FUSE BLOWER MOTOR PLUG C L G N N NEUTRAL G GROUND L LINE C COMMON L2 L2 L2 COM L1 L1 XFMR X13 COOL X13 HEAT 24 VAC RED COM GREY Y1 C L G N WHITE X...

Страница 26: ...1 only On Stage 1 Heat on instantly Heat blower on after 3 second delay Stage 3 5 Heat on after 1 minute delay Stage 2 Heat on after 2 minute delay Stage 4 6 Heat on after 3 minute delay Off Heat stag...

Страница 27: ...27...

Страница 28: ...sareprimarilyintendedtoassistqualifiedindividuals experienced in the proper installation of this appliance Some local codes require licensed installation service personnel for this type of equipment P...

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