Carrier PHB4 B Series Installation Instruction

13.4 seer2 single-packaged heat pump system with r-454b refrigerant single phase 2-5 nominal tons (sizes 24-60) three phase 3-5 nominal tons (sizes 36-60)

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PHB4 Series B and WPH5 Series B

13.4 SEER2 Single-Packaged Heat Pump System

with R-454B Refrigerant

Single Phase 2-5 Nominal Tons (Sizes 24-60)

Three Phase 3-5 Nominal Tons (Sizes 36-60)

IMPORTANT: Effective January 1, 2023, all split system and packaged

air conditioners must be installed pursuant to applicable regional

efficiency standards issued by the Department of Energy.

NOTE: Read the entire instruction manual before starting the

installation.

NOTE: Installer: Make sure the Owner's Manual and Service

Instructions are left with the unit after installation.

Table of Contents

Safety Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Receiving and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Transport and Storage Considerations . . . . . . . . . . . . . . . . . . . . . . 2

Leak Dissipation System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Pre-Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Start-Up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Sequence of Events - Dissipation Mode . . . . . . . . . . . . . . . . . . . 34

Start-Up Checklist. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Decommissioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Fig. 1 – Unit WPH5, PHB4

Installation Instruction

A170030

A09183

Safety Considerations

This unit is equipped with electrically powered safety measures. For the

safety measures to be effective, the unit must be electrically powered at

all times after installation, other than when servicing.

WARNING

PERSONAL INJURY AND PROPERTY DAMAGE

HAZARD

Continuous fan mode required for proper functioning. Installation must

meet the Required Minimum Dissipation Airflow as outlined in the

Leak Dissipation System section. Follow instructions in the Continuous

Fan Speed Set-Up section to change speeds.

Installation and servicing of this equipment can be hazardous due to

mechanical and electrical components. Only trained and qualified

personnel should install, repair, or service this equipment.

Untrained personnel can perform basic maintenance functions such as

cleaning and replacing air filters. All other operations must be performed

by trained service personnel. When working on this equipment, observe

precautions in the literature, on tags, and on labels attached to or shipped

with the unit and other safety precautions that may apply.

WARNING

PERSONAL INJURY AND PROPERTY DAMAGE

HAZARD

For continued performance, reliability, and safety, the only approved

accessories and replacement parts are those specified by the equipment

manufacturer. The use of non-manufacturer approved parts and

accessories could invalidate the equipment limited warranty and result

in fire risk, equipment malfunction, and failure. Please review

manufacturer's instructions and replacement part catalogs available

from your equipment supplier.

Auxiliary devices which may be a POTENTIAL IGNITION SOURCE

shall not be installed in the duct work. Examples of such POTENTIAL

IGNITION SOURCES are hot surfaces with a temperature exceeding

1292°F (700°C) and electric switching devices.

Electrostatic air purifiers installed in the ductwork are permitted, if the

purifier has an airflow sensor.

False ceilings or drop ceilings must not be used as a return air

duct/plenum.

This self-contained unit is already charged with refrigerant for optimum

performance, and shouldn't require any adjustments. Should any

installation/service work on the A2L refrigerant system be needed,

non-sparking tools are required. If the refrigerant system is opened, a

refrigerant detector should be used to check for leaks. Open flames or

other ignition sources should not be present, except during brazing.

Brazing should only take place on refrigerant tubes that are open to the

atmosphere or have been properly evacuated.

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Questions and answers

Summary of Contents for Carrier PHB4 B Series

Page 1 PHB4 Series B and WPH5 Series B 13.4 SEER2 Single-Packaged Heat Pump System with R-454B Refrigerant Single Phase 2-5 Nominal Tons (Sizes 24-60) Three Phase 3-5 Nominal Tons (Sizes 36-60) Installation Instruction Safety Considerations IMPORTANT: Effective January 1, 2023, all split system and packaged air conditioners must be installed pursuant to applicable regional This unit is equipped with electrically powered safety measures.
Page 2 Follow all safety codes. Wear safety glasses, protective clothing, and NOTICE work gloves. Use quenching cloth for brazing operations. Have a fire extinguisher available. Read these instructions thoroughly and follow all warnings or cautions included in literature and attached to the unit. If the unit gasketing or insulation must be replaced, ensure the material Consult local building codes, the current editions of the National used is compliant with the two agency requirements listed.
Page 3 PHB4 Series B and WPH5 Series B: Installation Instruction CAUTION UNIT/STRUCTURAL DAMAGE HAZARD Failure to follow this caution may result in property damage. Ensure there is sufficient clearance for saw blade when cutting the outer horizontal flange of the roof curb so there is no damage to the roof or flashing.
Page 4 PHB4 Series B and WPH5 Series B: Installation Instruction A240008 Fig. 2 – PHB4 24-30 Unit Dimensions Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Page 5 PHB4 Series B and WPH5 Series B: Installation Instruction A240010 Fig. 3 – WPH5 24-30 Unit Dimensions Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Page 6 PHB4 Series B and WPH5 Series B: Installation Instruction A240009 Fig. 4 – PHB4 36-60 Unit Dimensions Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Page 7 PHB4 Series B and WPH5 Series B: Installation Instruction A240011 Fig. 5 – WPH5 36-60 Unit Dimensions Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Page 8 PHB4 Series B and WPH5 Series B: Installation Instruction A180216 Fig. 6 – Roof Curb Dimensions B (small/common UNIT CATALOG B (large base) base) SIZE NUMBER IN. (mm) IN. (mm) IN. (mm) IN. (mm) IN. (mm) IN. (mm) IN. (mm) IN.
Page 9 PHB4 Series B and WPH5 Series B: Installation Instruction A09051 RIGGING WEIGHTS (SMALL CABINET) RIGGING WEIGHTS (LARGE CABINET) Unit Unit Rigging Weight Rigging Weight NOTE: See dimensional drawing for corner weight distribution. Fig. 7 – Rigging Weights Step 4 – Rig and Place Unit Inspection Prior to initial use, and at monthly intervals, all rigging shackles, clevis WARNING...
Page 10 PHB4 Series B and WPH5 Series B: Installation Instruction Rigging/Lifting of Unit (See Fig. Configuring Units for Downflow (Vertical) Discharge Lifting holes are provided in base rails as shown. WARNING 1. Attach shackles, clevis pins, and straps to the base rails of the unit. Be sure materials are rated to hold the weight of the unit (See ELECTRICAL SHOCK HAZARD Fig.
Page 11 PHB4 Series B and WPH5 Series B: Installation Instruction 3. Use flexible transition between rigid ductwork and unit to prevent If the installation requires draining the condensate water away from the transmission of vibration. The transition may be screwed or bolted unit, install a field-supplied 2 -in.
Page 12 PHB4 Series B and WPH5 Series B: Installation Instruction High-Voltage Connections Special Procedures for 208-V Operation The unit must have a separate electrical service with a field-supplied, WARNING waterproof disconnect switch mounted at, or within sight from the unit. Refer to the unit rating plate, NEC and local codes for maximum ELECTRICAL SHOCK HAZARD fuse/circuit breaker size and minimum circuit amps (ampacity) for wire sizing.
Page 13 PHB4 Series B and WPH5 Series B: Installation Instruction Leak Dissipation Control Board (DSB) Test Button IMPORTANT: Press the Test Button for approximately ONE SECOND The leak dissipation control board (Fig. 13) is located in the control box. to enter Test Mode. Pressing the Test button for a longer period can There are 2 LED indicators, which are viewable after removing the possibly clear all fault code history (Table...
Page 14 PHB4 Series B and WPH5 Series B: Installation Instruction In this case, 1006 CFM. Since 1006 CFM is greater than 266 CFM, the (1.) If indoor temperature is above temperature set point, continuous fan speeds are sufficient to deliver the required minimum thermostat closes circuits R to G, R to Y and R to O-The dissipation airflow.
Page 15 PHB4 Series B and WPH5 Series B: Installation Instruction Table 4 – Minimum Airflow for Reliable Electric Heater Operation (CFM) SIZE AIRFLOW (CFM) 1025 1250 1400 1710 1800 A09098 Fig. 16 – Typical Installation Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Page 16 PHB4 Series B and WPH5 Series B: Installation Instruction A240137 Fig. 17 – Connection Wiring Schematics 208/230-1-60 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Page 17 PHB4 Series B and WPH5 Series B: Installation Instruction A240138 Fig. 18 – Ladder Wiring Schematics 208/230-1-60 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Page 18 PHB4 Series B and WPH5 Series B: Installation Instruction A240139 Fig. 19 – Connection Wiring Schematics - 208/230-3-60 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Page 19 PHB4 Series B and WPH5 Series B: Installation Instruction A240140 Fig. 20 – Ladder Wiring Schematics - 208/230-3-60 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Page 20 PHB4 Series B and WPH5 Series B: Installation Instruction A240141 Fig. 21 – Connection Wiring Diagram 460-3-60 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Page 21 PHB4 Series B and WPH5 Series B: Installation Instruction A240142 Fig. 22 – Ladder Wiring Diagram 460-3-60 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Page 22 PHB4 Series B and WPH5 Series B: Installation Instruction Pre-Start-Up FAN mode is placed in FAN ON position and shuts down when FAN MODE switch is placed in AUTO position. WARNING (2.) Thermostat: When the room temperature rises to a point that is slightly above the cooling control setting of the thermostat, the FIRE, EXPLOSION, ELECTRICAL SHOCK AND thermostat completes the circuit between thermostat...
Page 23 PHB4 Series B and WPH5 Series B: Installation Instruction 6. Shut off power to unit. WARNING 7. Before beginning recovery of the refrigerant: a. Make sure that handling equipment is available, if needed, to EXPLOSION HAZARD handle the refrigerant recovery cylinders. b.
Page 24 PHB4 Series B and WPH5 Series B: Installation Instruction NOTE: If the problem causing the inaccurate readings is a refrigerant 1. Using Fig. 24, move the two pin DEHUM jumper from the “STD” leak, refer to Check for Refrigerant Leaks section. position to the “DEHUM”...
Page 25 PHB4 Series B and WPH5 Series B: Installation Instruction Continuous Fan Operation WARNING When the DEHUM feature is not used, the continuous fan speed will be the same as cooling fan speed. When the DEHUM feature is used, the PERSONAL INJURY AND PROPERTY DAMAGE continuous fan will operate on IFB “LOW”...
Page 26 PHB4 Series B and WPH5 Series B: Installation Instruction C03012 Fig. 25 – Typical Heat Pump Operation, Heating Mode Step 3 – Defrost Control Demand Defrost Mode The defrost mode is factory set to an initial 60-minute time interval. It may also be adjusted to an initial interval of 30, 90, or 120 minutes.
Page 27 PHB4 Series B and WPH5 Series B: Installation Instruction Table 6 – Dry Coil Air Delivery* - Horizontal and Downflow Discharge Sizes 24-60 ESP (in. W.C.) Unit Size Motor Speed Blue 0.09 0.07 0.06 Pink Med-Low 0.11 0.12 0.12 0.13 0.13 0.14 0.14...
Page 28 PHB4 Series B and WPH5 Series B: Installation Instruction Table 7 – Filter Pressure Drop Table (IN. W.C.) Cooling Standard CFM (SCFM) Filter Size in. (mm) Tons 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 600-1400 CFM 2.0, 12x20x1+12x20x1...
Page 29 PHB4 Series B and WPH5 Series B: Installation Instruction Maintenance Indoor Blower and Motor NOTE: All motors are pre-lubricated. Do not attempt to lubricate these To ensure continuing high performance, and to minimize the possibility motors. of premature equipment failure, periodic maintenance must be NOTE: 460 volt units have a stepdown autotransformer that supplies performed on this equipment.
Page 30 PHB4 Series B and WPH5 Series B: Installation Instruction To properly check or adjust charge, conditions must be favorable for subcooling charging. Favorable conditions exist when the outdoor temperature is between 75_F to 115_F (24_C and 46_C), and the indoor temperature is between 70_F and 80_F (21_C and 27_C). Follow the procedure above. A240116 Fig.
Page 31 PHB4 Series B and WPH5 Series B: Installation Instruction Step 2 – Outdoor Coil, Indoor Coil, and Condensate with the proper electrical instrumentation. Refer to the unit wiring label when making these checkouts. Drain Pan Step 5 – Refrigerant Circuit Inspect the condenser coil, evaporator coil, and condensate drain pan at Inspect all refrigerant tubing connections.
Page 32 PHB4 Series B and WPH5 Series B: Installation Instruction WARNING EXPLOSION HAZARD Failure to follow this warning could result in personal injury, death or property damage. Wear safety glasses and gloves when handling refrigerants. Keep torches and other ignition sources away from refrigerant and oils. The scroll compressor pumps refrigerant throughout the system by the interaction of a stationary and an orbiting scroll.
Page 33 PHB4 Series B and WPH5 Series B: Installation Instruction FAN GRILLE MOTOR MOTOR SHAFT A08505 MAX DISTANCE BETWEEN TOP OF FAN GRILLE AND BOTTOM OF FAN BLADE “A” Size Fig. 29 – Fan Blade Position Step 12 – Refrigerant System 1.
Page 34 PHB4 Series B and WPH5 Series B: Installation Instruction Check Defrost Thermostat Flashing 5 The defrost thermostat is usually located on the lowest liquid leaving If the code does not clear after power cycling the system, replace the circuit of the left condenser coil (see Fig.
Page 35 PHB4 Series B and WPH5 Series B: Installation Instruction Table 11 – Troubleshooting Chart SYMPTOM CAUSE REMEDY Power failure Call power company Fuse blown or circuit breaker tripped Replace fuse or reset circuit breaker Defective contactor, transformer, or high-pressure, Replace component loss-of-charge or low-pressure switch Compressor and condenser fan will not start.
Page 36 PHB4 Series B and WPH5 Series B: Installation Instruction Table 12 – Dissipation Board Status Code Descriptions A240111 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Page 37 PHB4 Series B and WPH5 Series B: Installation Instruction Start-Up Checklist (Remove and Store in Job Files) I. PRELIMINARY INFORMATION MODEL NO.: ____________________________________________ SERIAL NO.: ____________________________________________ DATE: __________________________________________________ TECHNICIAN: ___________________________________________ II. PRESTART-UP (Insert check mark in box as each item is completed) ( ) VERIFY THAT ALL PACKING MATERIALS HAVE BEEN REMOVED FROM UNIT ( ) REMOVE ALL SHIPPING HOLD DOWN BOLTS AND BRACKETS PER INSTALLATION INSTRUCTIONS ( ) CHECK ALL ELECTRICAL CONNECTIONS AND TERMINALS FOR TIGHTNESS...
Page 38 Edition Date: 12/24 © 2024 Carrier. All rights reserved. Catalog No: PHB4-WPH5-04SI A Proud Member of the Carrier Family. Replaces: PHB4-WPH5-03SI Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

This manual is also suitable for:

Wph5 b series