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SAFETY  HAZARD!

  This  information  is  intended  for  use  by 

individuals  possessing  adequate  backgrounds  of  electrical 
and mechanical experience. Any attempt to repair a central air 
conditioning  product  may  result  in  personal  injury  and/or 
property  damage.  The  manufacturer  or  seller  cannot  be 
responsible for the interpretation of this information, nor can it 
assume any liability in connection with its use.

Important: 

These instructions do not cover all variations in systems 

nor provide for every possible contingency to be met in connection 
with the installation. Should further information be desired or should 
particular problems arise which are not covered sufficiently for the 
purchaser’s  purposes,  the  matter  should  be  referred  to  your 
installing dealer or local distributor.

Important: 

Installation of this unit shall be made in accordance with 

the National Electric Code, NFPA No. 90A and 90B, and any other 
local codes or utilities requirements.

Note: 

The  small  air  handlers  have  been  evaluated  in  accordance 

with the Code of Federal Regulations, Chapter XX, Part 3280 or the 
equivalent. “SUITABLE FOR MOBILE HOME USE.”

WARNING 

WARNING 

WARNING 

WARNING 

WARNING 

WARNING 

HAZARDOUS VOLTAGE!

Disconnect all electrical power, including remote disconnects 
before  installing  or  servicing.  Follow  proper  lockout/tagout 
procedures  to  ensure  the  power  can  not  be  inadvertently 
energized. Failure to disconnect power before servicing could 
result in death or serious injury.

LIVE  ELECTRICAL  COMPONENTS! 

During  installation, 

testing, servicing, and troubleshooting of this product, it may 
be necessary to work with live electrical components. Failure 
to follow all electrical safety precautions when exposed to live 
electrical components could result in death or serious injury.

EXPLOSION HAZARD!

Do not store corrosive or combustible materials, gasoline, or 
other  flammable  vapors  or  liquids  near  the  unit.  Failure  to 
follow  this  warning  could  result  in  property  damage,  serious 
personal injury, or death.

ELECTRICAL HAZARD!

Grounding  Required!  Follow  proper  local  and  state  electrical 
code  on  requirements  for  grounding.  Failure  to  follow  this 
warning  could  result  in  property  damage,  serious  personal 
injury, or death.

HAZARDOUS VAPORS! 

Do not install an air handler with a 

non-ducted  return  in  the  same  closet,  alcove,  or  utility  room 
as  a  fossil  fuel  device.  Hazardous  vapors  can  be  distributed 
throughout the conditioned space and equipment damage can 
result.

Section 2. Safety Information

WARNING

PROPOSITION  65:  This  appliance  contains  fiberglass 
insulation. Respirable particles of fiberglass are known to State 
of California to cause cancer.

All  manufacturer  products  meet  current  federal  OSHA 
Guidelines  for  safety.  California  Proposition  65  warnings  are 
required  for  certain  products,  which  are  not  covered  by  the 
OSHA standards.

California’s Proposition 65 requires warnings for products sold in 
California  that  contain  or  produce  any  of  over  600  listed 
chemicals known to the State of California to cause cancer or 
birth  defects  such  as  fiberglass  insulation,  lead  in  brass,  and 
combustion products from natural vapor.

All  “new  equipment”  shipped  for  sale  in  California  will  have 
labels  stating  that  the  product  contains  and/or  produces 
Proposition  65 chemicals. Although  we have not changed  our 
processes, having the same label on all our products facilitates 
manufacturing and shipping. We cannot always know “when, or 
if” products will be sold in the California market.

You  may  receive  inquiries  from  customers  about  chemicals 
found  in,  or  produced  by,  some  of  our  heating  and 
air-conditioning equipment, or found in natural vapor used with 
some  of  our  products.  Listed  below  are  those  chemicals  and 
substances commonly associated with similar equipment in our 
industry and other manufacturers.

      Glass Wool (Fiberglass) Insulation
      Carbon Monoxide (CO)
      Formaldehyde 
      Benzene

More  details  are  available  at  the  websites  for  OSHA 
(Occupational  Safety  and  Health  Administration),  at 
www.osha.gov and the State of California’s OEHHA (Office of 
Environmental Health Hazard Assessment), at www.oehha.org. 
Consumer  education  is  important  since  the  chemicals  and 
substances  on  the  list  are  found  in  our  daily  lives.  Most 
consumers are aware that products present safety and health 
risks, when improperly used, handled and maintained.

2

Summary of Contents for OXBOX JMM4A0A18S21SAA

Page 1: ...single phase 5 7 5 and 10 kW heaters All aluminum coil Factory installed piston style refrigerant control Field installed TXV kits available Blower and coil slide out easily for maintenance Factory sealed cabinet certified to achieve 2 or less air leakage rate at 1 0 inch water column Front or bottom return air Painted finish on galvanized steel Sturdy polycarbonate drain pans Air handler has fact...

Page 2: ... state electrical code on requirements for grounding Failure to follow this warning could result in property damage serious personal injury or death HAZARDOUS VAPORS Do not install an air handler with a non ducted return in the same closet alcove or utility room as a fossil fuel device Hazardous vapors can be distributed throughout the conditioned space and equipment damage can result Section 2 Sa...

Page 3: ...ins adhesives cleaning compounds and cement creates a corrosive condition which may cause rapid deterioration of the cabinet and internal components CAUTION SAFETY HAZARD Sharp Edge Hazard Be careful of sharp edges on equipment or any cuts made on sheet metal while installing or servicing Personal injury may result WARNING Make sure the blower motor support is tight 3 motor mount bolts then check ...

Page 4: ...mounting bracket and attach the unit to the installed bracket Reference Figure 3 1 4 Install the additional bottom plate for extra support for this type mounting see figure 3 1 Note The additional plate is shipped in the bottom of the shipping carton only for 30 36k unit 3 2 1 WALL MOUNT Fig 3 2 FRAME MOUNT The air handler comes with 8 clearance holes 4 on each side These holes are used to mount t...

Page 5: ...idential Winter and Summer Air Conditioning and Equipment Selection Latest editions are available from ACCA Air Conditioning Contractors of America 1513 16th Street N W Washington D C 20036 If duct system incorporates flexible air duct be sure pressure drop information straight length plus all turns shown in ACCA Manual D is accounted for in system Supply plenum is attached to the 3 4 duct flanges...

Page 6: ...HP or AC single stage heating cooling with electric heat The thermostat will energize the fan on a demand for heating or cooling Install the thermostat on an inside wall away from drafts lights or other heat sources in a location that has sufficient air circulation from other rooms being controlled by the thermostat The thermostat should be mounted 4 to 5 feet above the floor Low voltage control w...

Page 7: ...oints are tight 7 Be sure the return air filter is installed 8 Operate complete system in each mode to verify proper performance Verify operation of supplementary electric heater 7 3 13 Maintenance The system air filter s should be inspected cleaned or replaced at least monthly Make certain that the access panels are replaced and secured properly before placing the unit back in operation This prod...

Page 8: ...ctric heaters 8 N E C class2 24volts Factory default fan speed is medium FM red wire connected to FR 4 For HI speed connect FM black wire to FR 4 For LOW speed connect FM blue wire to FR 4 and FM red wire to FR 6 Always connect the unused FM wire to the dummy terminal CN3 connect the plug to electric heaters kit when applied FM T A T S O M R E H T O T PLUG PLATE SEE NOTE 4 SCHEMATIC DIAGRAM COMPON...

Page 9: ... 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 36 EXTERNAL STATIC PRESSURE in w c 24 30 MODEL JMM4A BLOW ER SPEEDS 18 Shaded boxes represent airflow outside the required 300 450 cfm ton NOTES 1 Airflow based upon dry coil at 230V with no electric heat and factory approved filter 2 Airflow is equivalent for front or bottom...

Page 10: ...applications section for more detail Primary drain conncetion 3 4 female pipe thread NPT Auxiliary drain connection 3 4 female pipe thread NPT NOTE Hand tighten only Section 7 Dimensional Data DIMENSIONAL DATA 18 88 101 40 46 MODEL SIZE Dimensions inch mm UNIT HEIGHT H IN mm UNIT WIDTH W IN mm UNIT LENGTH D IN mm 88 101 40 46 24 UNIT WIDTH W1 IN mm UNIT WEIGHT SHIPPING WEIGHT LBS kg UNIT LENGTH D1...

Page 11: ...MENSIONS A B C JMM4A0A18S21SAA 24 9 10 150 10 1 8 61 119 1 20 717 JMM4A0A24S21SAA 24 9 10 150 10 1 8 61 119 1 20 717 JMM4A0B30S21SAA 24 9 10 150 10 1 8 61 132 795 JMM4A0B36S31SAA 24 9 10 150 10 1 8 61 132 795 Model number Dimension inch mm ...

Page 12: ...our local dealer distributor Since the manufacturer has a policy of continuous product and product data improvement it reserves the right to change the design and specification without notice 16123000A19244 V2 0 www oxboxhvac com 2019TwentyThreeC LLC 800 Beaty Street ...

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