OXBOX JMM4A0A18S21SA Wall Mount Air Handlers Ton Cooling Heat Pump User Manual

: June 13, 2024
: Oxbox

Table of Contents

OXBOX JMM4A0A18S21SA Wall Mount Air Handlers Ton Cooling Heat Pump
Product Information
Product Usage Instructions
Dimensional and Clearance Data
PRODUCT SPECIFICATIONS
Performance and Electrical Data
Mechanical Specifications
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OXBOX JMM4A0A18S21SA Wall Mount Air Handlers Ton Cooling Heat Pump

OXBOX-JMM4A0A18S21SA-Wall-Mount-Air-Handlers-Ton-Cooling-Heat-Pump-
product

Product Information

Model: JMM4A-SUB-1A
Product Dimensions (inch):
- Height: 36-1/2 (928)
- Width: 20-1/2 (522)
- Width (W1): 17-2/5 (442)
- Depth: 15 (381)
- Depth (D1): 9-1/2 (242)
Unit Weight/Shipping Weight (lbs/kg): 88/97 (40/44)
Rated Volts/Ph/Hz: 208-230/1/60
Indoor Coil Type: Plate Fin
Indoor Fan Type: Centrifugal
Filter Furnished: No
Type Recommended: Throwaway
Refrigerant: R-410A
External Static Pressure (inwc.):
- Speeds:
- Low: 0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8
- Medium: 0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8
- High: 0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8

Product Usage Instructions

Ensure that the unit is installed with the minimum clearance specified in the user manual.
Connect the gas line with a 3/4-inch braze coupling.
Connect the refrigerant line with a 3/4-inch gas coupling and a 3/8-inch liquid coupling.
Install the recommended throwaway filter with dimensions 16x20x1 inch.
Power the unit with the rated volts/ph/hz of 208-230/1/60.
Adjust the external static pressure settings based on the desired airflow performance.

Dimensional and Clearance Data

OXBOX-JMM4A0A18S21SA-Wall-Mount-Air-Handlers-Ton-Cooling-Heat-Pump-
FIG-1

MINIMUM UNIT CLEARANCE TABLE

| TO COMBUSTIBLE MATERIAL (REQUIRED)| SERVICE CLEARANCE (RECOMMENDED)
SIDES| 0″| 0″
FRONT| 0″| 24″
BACK| 0″| 0″
INLET DUCT| 0″| 0″
OUTLET DUCT| 0″*|

0″ FOR THE FIRST 3 FT. OF OUTLET DUCT WHEN ELECTRIC HEATERS ARE INSTALLED

PRODUCT DIMENSIONS

PRODUCT DIMENSIONS inch (mm)	Unit weight/ Shipping Weight [LBS(kg)]
	Height
H	W
JMM4A0A18S21SA	36-1/2″ (928)
(242)	Orifice
JMM4A0A24S21SA	36-1/2″ (928)
(242)	Orifice
JMM4A0B30S21SA	39-1/2″ (1004)
(242)	Orifice
JMM4A0B36S31SA	39-1/2″ (1004)
(242)	Orifice

PRODUCT SPECIFICATIONS

OXBOX-JMM4A0A18S21SA-Wall-Mount-Air-Handlers-Ton-Cooling-Heat-Pump-
FIG-3

Refrigerant Control	Orifice	Orifice	Orifice	Orifice
Drain Conn Size (in.)	3/4 NPT	3/4 NPT	3/4 NPT	3/4 NPT
DUCT CONNECTIONS	See Outline Drawing	See Outline Dawing	See Outline
Drawing	See Outline Drawing
INDOOR FAN — Type	Centrifugal	Centrifugal	Centrifugal	Centrifugal
Diameter-Width (In.)	10-5/6 X 6-1/7	10-5/6 X 6-1/7	10-3/5 X 9-10/7	10-3/5

X 9-10/7
No. Used

Drive – No Speeds CFM vs. in. w.g.

| 1

Direct – 3

See Fan

| 1

Direct – 3

See Fan

| 1

Direct – 3

See Fan

| 1

Direct – 3

See Fan

| Performance Table| Performance Table| Performance Table| Performance Table
No. Motors — H.P.| 1 – 1/6| 1 – 1/4| 1 – 1/3| 1 – 1/2
Motor Speed R.P.M.| 1075| 1075| 1075| 1075
Volts/Ph/Hz| 208-230/1/60| 208-230/1/60| 208-230/1/60| 208-230/1/60
F.L. Amps| 0.8| 1.0| 1.28| 1.8
FILTER

Filter Furnished?

|

No

| No|

No

|

No

Ref. Line Connections Coupling or Conn . Size — in.

| R-410A

Brazed

Gas 3/4

| R-410A

Brazed 3/4

| R-410A

Brazed 3/4

| R-410A

Brazed 3/4

Coupling or Conn . Size — in.| Liq. 3/8| 3/8| 3/8| 3/8
DIMENSIONS| H x W x D| H x W x D| H x W x D| H x W x D
Cr ated (In.)| 39-3/8×22-6/7×17-1/3| 39-3/8×22-6/7×17-1/3| 42-4/7×24-1/4×21-2/7| 42-4/7×24-1/4×21-2/7
Uncrated| 36-1/2×20-1/2×15| 36-1/2×20-1/2×15| 39-1/2×22×19| 39-1/2×22×19
WEIGHT| | | |
Shipping (Lbs.)/ Net (Lbs.)| 97/88| 97/88| 119/106| 119/106

Performance and Electrical Data

Performance and Electrical Data – JMM4A0A18–B36

AIR FLOW PERFORMANCE (Standard CFM)

Model Number	Motor Speeds		EXTERNAL STATIC PRESSURE (INWC.)
0	0.1	0.2	0.3

JMM4A0A18S21SAA

| ****

Low

| CFM| 603| 562| 525| 485| 443| 393| —| —| —
Watts| 216| 212| 208| 202| 197| 190| —| —| —
Amps| 1.1| 1.1| 1.1| 1| 1| 1| –| –| –

Medium

| CFM| 695| 656| 620| 581| 540| 498| 440| 380| —
Watts| 227| 224| 220| 216| 210| 203| 196| 188| —
Amps| 1.2| 1.1| 1.1| 1.1| 1.1| 1| 1| 1| –

High

| CFM| 813| 775| 731| 692| 653| 609| 560| 501| 424
Watts| 284| 279| 273| 267| 261| 253| 245| 237| 227
Amps| 1.5| 1.4| 1.4| 1.4| 1.3| 1.3| 1.3| 1.2| 1.2

JMM4A0A24S21SAA

| ****

Low

| CFM| 676| 640| 602| 563| 523| 499| –| –| –
Watts| 238| 232| 226| 222| 217| 214| —| —| —
Amps| 1.2| 1.2| 1.2| 1.1| 1.1| 1.1| –| –| –

Medium

| CFM| 845| 801| 759| 716| 675| 626| 573| 510| –
Watts| 276| 271| 266| 261| 256| 252| 247| 242| —
Amps| 1.4| 1.4| 1.4| 1.3| 1.3| 1.3| 1.3| 1.2| –

High

| CFM| 947| 895| 847| 799| 753| 704| 655| 592| 530
Watts| 343| 336| 329| 322| 315| 309| 303| 297| 291
Amps| 1.8| 1.7| 1.7| 1.6| 1.6| 1.6| 1.5| 1.5| 1.5

JMM4A0B30S21SAA

| ****

Low

| CFM| 992| 952| 912| 873| 828| 782| 728| 656| 627
Watts| 327| 318| 308| 299| 290| 281| 273| 264| 256
Amps| 1.7| 1.6| 1.6| 1.5| 1.5| 1.4| 1.4| 1.4| 1.3

Medium

| CFM| 1211| 1165| 1114| 1065| 1016| 960| 899| 833| 748
Watts| 359| 353| 346| 338| 330| 321| 311| 300| 289
Amps| 1.8| 1.8| 1.8| 1.7| 1.7| 1.6| 1.6| 1.5| 1.5

High

| CFM| 1367| 1312| 1252| 1192| 1131| 1063| 990| 908| 821
Watts| 450| 440| 430| 420| 409| 397| 384| 371| 358
Amps| 2.3| 2.3| 2.2| 2.1| 2.1| 2| 2| 1.9| 1.8

JMM4A0B36S31SAA

| ****

Low

| CFM| 1149| 1105| 1056| 1008| 960| 909| 856| 791| 726
Watts| 392| 380| 368| 356| 344| 332| 321| 309| 297
Amps| 2| 1.9| 1.9| 1.8| 1.8| 1.7| 1.6| 1.6| 1.5

Medium

| CFM| 1298| 1252| 1198| 1147| 1094| 1037| 976| 910| 842
Watts| 400| 390| 380| 370| 360| 350| 340| 329| 319
Amps| 2| 2| 1.9| 1.9| 1.8| 1.8| 1.7| 1.7| 1.6

High

| CFM| 1397| 1345| 1290| 1263| 1196| 1116| 1051| 980| 907
Watts| 460| 452| 443| 433| 422| 410| 396| 382| 366
Amps| 2.4| 2.3| 2.3| 2.2| 2.2| 2.1| 2| 2| 1.9
Shaded boxes represent airflow outside the required 300-450 cfm/ton.

NOTES:

Airflow based upon dry coil at 230V with no electric heat, no filter.
Airflow is equivalent for front or bottom return configurations.
SCFM is nearly the same with cooling performance airflow, the gap is in the 1 to 2%.

JMM4A0A18S21SA – ELECTRICAL DATA

JMM4A0A18S21SA – ELECTRICAL DATA

Heater Model No

| No. of Circuits/ Phases| 240 Volt| 208 Volt
Capacity| Heater Amps per

Circuit

| Minimum

Circuit Ampacity

| Maximum Overload

Protection

| Capacity| Heater Amps per

Circuit

| Minimum

Circuit Ampacity

| Maximum Overload

Protection

kW| BTUH| kW| BTUH
No Heater| | | | | 1.0| 15| | | | 1.0| 15
BAYHTRJ505BRKA| 1/1| 5| 17100| 20.8| 27.1| 30| 3.8| 12800| 18.0| 23.6| 25
BAYHTRJ508BRKA| 1/1| 7.5| 25600| 31.2| 40.1| 45| 5.6| 19200| 27.1| 34.9| 40
BAYHTRJ510BRKA*| 1/1| 10| 34100| 41.7| 53.1| 60| 7.5| 25600| 36.1| 46.2| 50

JMM4A0A24S21SA – ELECTRICAL DATA

JMM4A0A24S21SA – ELECTRICAL DATA

Heater Model No

| No. of Circuits/ Phases| 240 Volt| 208 Volt
Capacity| Heater

Amps per Circuit

| Minimum

Circuit Ampacity

| Maximum

Overload Protection

| Capacity| Heater

Amps per Circuit

| Minimum

Circuit Ampacity

| Maximum

Overload Protection

kW| BTUH| kW| BTUH
No Heater| | | | | 1.3| 15| | | | 1.3| 15
BAYHTRJ505BRKA| 1/1| 5| 17100| 20.8| 27.3| 30| 3.8| 12800| 18.0| 23.9| 25
BAYHTRJ508BRKA| 1/1| 7.5| 25600| 31.2| 40.4| 45| 5.6| 19200| 27.1| 35.2| 40
BAYHTRJ510BRKA*| 1/1| 10| 34100| 41.7| 53.4| 60| 7.5| 25600| 36.1| 46.4| 50

JMM4A0B30S21SA – ELECTRICAL DATA

JMM4A0B30S21SA – ELECTRICAL DATA

Heater Model No

| No. of Circuits/ Phases| 240 Volt| 208 Volt
Capacity| Heater Amps per

Circuit

| Minimum

Circuit Ampacity

| Maximum Overload

Protection

| Capacity| Heater Amps per

Circuit

| Minimum

Circuit Ampacity

| Maximum Overload

Protection

kW| BTUH| kW| BTUH
No Heater| | | | | 1.6| 15| | | | 1.6| 15
BAYHTRJ505BRKA| 1/1| 5| 17100| 20.8| 27.7| 30| 3.8| 12800| 18.0| 24.2| 25
BAYHTRJ508BRKA| 1/1| 7.5| 25600| 31.2| 40.7| 45| 5.6| 19200| 27.1| 35.5| 40
BAYHTRJ510BRKA*| 1/1| 10| 34100| 41.7| 53.7| 60| 7.5| 25600| 36.1| 46.8| 50

JMM4A0B36S31SA – ELECTRICAL DATA

JMM4A0B36S31SA – ELECTRICAL DATA

Heater Model No

| No. of Circuits/ Phases| 240 Volt| 208 Volt
Capacity| Heater Amps per

Circuit

| Minimum

Circuit Ampacity

| Maximum

Overload Protection

| Capacity| Heater Amps per

Circuit

| Minimum

Circuit Ampacity

| Maximum

Overload Protection

kW| BTUH| kW| BTUH
No Heater| | | | | 2.3| 15| | | | 2.3| 15
BAYHTRJ505BRKA| 1/1| 5| 17100| 20.8| 28.3| 30| 3.8| 12800| 18.0| 24.9| 25
BAYHTRJ508BRKA| 1/1| 7.5| 25600| 31.2| 41.4| 45| 5.6| 19200| 27.1| 36.2| 40
BAYHTRJ510BRKA*| 1/1| 10| 34100| 41.7| 54.4| 60| 7.5| 25600| 36.1| 47.4| 50

Mechanical Specifications

STANDARD FEATURES

Front or bottom return air
Painted finish on galvanized steel
Sturdy polycarbonate drain pans
- The JMM4 wall mount air handler a has factory-installed drain pan and is shipped for upflow applications only.
208/230 – VAC operation
Multi-speed direct drive blower
- PSC motor
• Stud or wall mounting tabs
Fully insulated cabinet
3/4″ NPT primary and secondary drains
All – aluminum tubes & fins

OPTIONAL ACCESSORIES

5, 7.5, and 10 kW single phase electric heaters
- Circuit breakers are standard on all single phase 5, 7.5, and 10 kW heaters.
R-410 TXV kit – 4AYTXVH3G2436
R-22 TXV conversion kit – 2AYTXVH3G2436
Front louver panel 20.5″ width – BAYFRTLOUPNL20 (1-Pack)
Front louver panel 22″ width – BAYFRTLOUPNL22 (1-Pack)
Return air / service wall panel – BAYTMMWALLPNL1 (20-Pack)
Return air / service wall panel – BAYTMMWALLPNLS (1-Pack)

The Manufacturer has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice.

OXBOX-JMM4A0A18S21SA-Wall-Mount-Air-Handlers-Ton-Cooling-Heat-Pump-
FIG-2