Installation guide

ManualsBrandsMammoth ManualsDomestic AppliancesJT4BE, Three Phase

14 SEERSPLIT SYSTEM HEAT PUMP WITH MICROCHANNEL COILS

T4BE - 036, 048, & 060 (3, 4, & 5 TON) SERIES

THREE-PHASE MODELS

IMPORTANT

ATTENTION INSTALLERS:

It is your responsibility to know this product better than your customer. This includes being able to install the

product according to strict safety guidelines and instructing the customer on how to operate and maintain the

equipment for the life of the product. Safety should always be the deciding factor when installing this product

and using common sense plays an important role as well. Pay attention to all safety warnings and any other

special notes highlighted in the manual. Improper installation of the furnace or failure to follow safety warnings

could result in serious injury, death, or property damage.

These instructions are primarily intended to assist qualiﬁed individuals experienced in the proper installation

of this appliance. Some local codes require licensed installation/service personnel for this type of equipment.

Please read all instructions carefully before starting the installation. Return these instructions to the customer’s

package for future reference.

DO NOT DESTROY. PLEASE READ CAREFULLY & KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.

INSTALLATION INSTRUCTIONS

Short Cycle Protection ..................................................... 7

System Cooling ................................................................ 7

System Heating ................................................................ 7

Defrost Control Board Test Pins ...................................... 7

HEAT PUMP MAINTENANCE .......................................... 7

REFRIGERANT CHARGING ............................................ 8

Charging the Unit in AC Mode ......................................... 8

Application Notes & Charging Charts .............................. 9

Figure 5. Charging Chart for 3 Ton Models ................... 9

Figure 6. Charging Chart for 4 Ton Models ................... 10

Figure 7. Charging Chart for 5 Ton Models ................... 10

Application Notes & Heat Mode Veriﬁcation Tables

(Heat Mode Only) ............................................................. 11

Table 5. Veriﬁcation Table for 3 Ton Models ................. 12

Table 6. Veriﬁcation Table for 4 Ton Models ................. 12

Table 7. Veriﬁcation Table for 5 Ton Models ................. 12

WIRING DIAGRAMS ......................................................... 13

Figure 8. W.D. for 3,4, & 5 Ton (208/230V) Models ...... 13

Figure 9. W.D. for 3,4, & 5 Ton (460V) Models ............. 14

INSTALLATION / PERFORMANCE CHECK LIST .......... 16

REPLACEMENT PARTS .................................................. 16

IMPORTANT SAFETY INFORMATION ............................ 2

HEAT PUMP INSTALLATION .......................................... 3

General Information ......................................................... 3

Before You Install the Heat Pump .................................... 3

Locating the Heat Pump .................................................. 3

Packaging Removal ......................................................... 3

Ground Level ................................................................... 3

Rooftop ............................................................................ 3

Connecting Refrigerant Tubing Between the Indoor &

Outdoor Unit ..................................................................... 4

Outdoor Oriﬁce Removal & Installation ............................ 4

ELECTRICAL WIRING ..................................................... 5

Pre-Electrical Checklist .................................................... 5

Line Voltage ..................................................................... 5

Grounding ........................................................................ 5

Thermostat / Low Voltage Connections ........................... 5

Unbalanced 3-Phase Supply Voltage .............................. 6

START UP & ADJUSTMENTS ......................................... 7

Pre-Start Check List ......................................................... 7

Start-Up Procedures ........................................................ 7

Operating Temperatures ............................................... 7

Air Circulation - Indoor Blower ......................................... 7

Summary of content (16 pages)

PAGE 1
Split system heat pump With Microchannel Coils 14 SEER Installation Instructions T4BE - 036, 048, & 060 (3, 4, & 5 Ton) Series Three-Phase Models important SAFETY INFORMATION............................. 2 HEAT PUMP INSTallATION........................................... 3 General Information.......................................................... 3 Before You Install the Heat Pump..................................... 3 Locating the Heat Pump...................................................
PAGE 2
important SAFETY INFORMATION INSTALLER: Please read all instructions before servicing this equipment. Pay attention to all safety warnings and any other special notes highlighted in the manual. Safety markings are used frequently throughout this manual to designate a degree or level of seriousness and should not be ignored. WARNING indicates a potentially hazardous situation that if not avoided, could result in personal injury or death.
PAGE 3
HEAT PUMP INSTallATION General Information Split system heat pumps are designed only for outdoor rooftop or ground level installations. This unit has been tested for capacity and efficiency in accordance with AHRI Standards and will provide many years of safe and dependable comfort, providing it is properly installed and maintained. Abuse, improper use, and/or improper maintenance can shorten the life of the appliance and create unsafe hazards.
PAGE 4
Connecting Refrigerant Tubing Between the Indoor & Outdoor Unit CAUTION: When servicing, cover or seal openings to minimize the exposure of the refrigerant system to air to prevent accumulation of moisture and other contaminants. After outdoor and indoor unit placement has been determined, route refrigerant tubing between the equipment in accordance with sound installation practices.
PAGE 5
3. Check the actual size of the new orifice. NOTE: The size is stamped on its side. Do not use pin gauges to measure the orifice diameter. 4. Insert the new orifice into the valve body, with the rounded end facing into the valve. See Figure 2 (page 4). • CAUTION: To prevent damage to the unit or internal components, it is recommended that two wrenches be used when loosening or tightening nuts. Do not over tighten! 5. Realign the assembly nut on the valve body and hand tighten both components.
PAGE 6
ODT (Optional) W2 Green G IN G R R W2 OUT W C C O O O Y1 IN Y Y Outdoor Heat Pump Red R White E Black C Thermostat W2 an outside wall or any other location where its operation may be adversely affected by radiant heat from fireplaces, sunlight, or lighting fixtures, and convective heat from warm air registers or electrical appliances. Refer to the thermostat manufacturer’s instruction sheet for detailed mounting and installation information.
PAGE 7
System Cooling START UP & ADJUSTMENTS Pre-Start Check List √ Verify the unit is level and has sufficient clearances for unobstructed airflow. √ Verify the outdoor coil and top of the unit are free from obstructions and debris, and all equipment access/control panels are in place. √ Verify that the line voltage power leads are securely connected and the unit is properly grounded. √ Verify that the low voltage wires are securely connected to the correct leads on the low voltage terminal strip.
PAGE 8
Status Indicator Status Type C1 H1 SC OF _.
PAGE 9
Application Notes & Charging Charts (Cooling Mode Only) • This equipment’s cooling system contains refrigerant under high pressure. Always use safe and environmentally sound methods when handling refrigerant handling or servicing the unit. Review the factory literature and safety warnings prior to servicing. • When repairing system leaks, always use a nitrogen (inert) gas to protect the refrigerant system and pressure check the repair before re-charging.
PAGE 10
Liquid Pressure (psig) T4BE-048C/D Charging Chart-Cooling 600 580 560 540 520 500 480 460 440 420 400 380 360 340 320 300 280 260 240 220 200 Remove refrigerant when above curve Add refrigerant when below curve 75 80 85 90 95 100 105 110 115 120 125 130 135 Liquid Temperature (F) Figure 6.
PAGE 11
Application Notes & Heat Mode Verification Tables (Heat Mode Only) Shaded boxes indicate flooded conditions. Rated design values. The suction pressure will vary from design value if outdoor air flow, entering dry bulb, or entering wet bulb temperatures vary. 1. All pressures are listed in psig and all temperatures in ° F 2. Discharge temperatures greater than charted values indicate an undercharged system.
PAGE 12
OUTDOOR TEMPERATURE (DEG. F) 10 20 30 40 50 60 Suc. Press Liquid Press. Disch. Press. Disch. Temp. Suc. Press. Liquid Press. Disch. Press. Disch. Temp. Suc. Press. Liquid Press. Disch. Press. Disch. Temp. Suc. Press. Liquid Press. Disch. Press. Disch. Temp. Suc. Press. Liquid Press. Disch. Press. Disch. Temp. Suc. Press. Liquid Press. Disch. Press. Disch. Temp. Suc. Press. Liquid Press. Disch. Press. Disch. Temp.
PAGE 13
T1 S R FIELD WIRING LOW VOLTAGE HIGH VOLTAGE LEGEND: CC HGBP AMB SENSOR COIL SENSOR HPS C RUN CAP.
PAGE 14
T3 T2 CC LEGEND: HGBP AMB SENSOR COIL SENSOR HPS 4 R RELAY S C OUTDOOR FAN MOTOR RUN CAP.
PAGE 15
PAGE 16
INSTALLATION / PERFORMANCE CHECK LIST INSTALLATION ADDRESS: CITY: ELECTRICAL SYSTEM STATE: UNIT MODEL # YES NO INSTALLER NAME: CITY________________________ STATE_________________ Has the owner’s information been reviewed with the customer? YES NO Has the Literature Package been left with the unit? YES NO Stage-1 Liquid Pressure (high side) Stage-1 Suction Pressure (low side) NO Line voltage polarity correct? YES NO YES Has the thermostat been calibrated? YES NO Is the thermostat level