Friedrich VERT-I-PAK VHA09K25RTQ User manual

Service Manual
95992013_00
Single Package Vertical Heat Pump System
R-410A Refrigerant
THE EXPERTS IN ROOM AIR CONDITIONING
VHA - 18K25RTQ, 18K34RTQ, 18K50RTQ, 18K75RTQ
VHA - 18R25RTQ, 18R34RTQ, 18R50RTQ, 18R75RTQ
18K
24K VHA - 24K25RTQ, 24K34RTQ, 24K50RTQ, 24K75RTQ, 24K10RTQ
VHA - 24R25RTQ, 24R34RTQ, 24R50RTQ, 24R75RTQ, 24R10RTQ
VHA - 09K25RTQ, 09K34RTQ, 09K50RTQ
VHA - 09R25RTQ, 09R34RTQ, 09R50RTQ
9K
12K VHA - 12K25RTQ, 12K34RTQ, 12K50RTQ
VHA - 12R25RTQ, 12R34RTQ, 12R50RTQ

2 PB
Table of Contents
INTRODUCTION 4
Important Safety Information 4
Personal Injury Or Death Hazards 5
Operation of Equipment in During Construction 7
Equipment Identification 8
Model Number Identification Guide 9
Serial Number Identification Guide 9
SPECIFICATIONS 10
Electrical Specifications 10
General Specifications 11
Electrical Requirements 11
Airflow Data (Condenser) 12
Chassis Specifications 9K, 12K 13
18K Dimensions 14
24K Dimensions 15
OPERATION 20
Sequence of Operation 20
Defrost Control Board 24
Remote Thermostat Connection 25
General Knowledge Sequence Of Refrigeration 26
REMOVE AND INSTALL THE CHASSIS 27
EXTERNAL STATIC PRESSURE 28
Checking External Static Pressure 28
Explanation of Tables 29
Indoor Airflow Data 29
Ductwork Preparation 29
Fresh Air Door 30
Checking Approximate Airflow 30
TROUBLESHOOTING 31
Control Diagnostic Modes 31
COMPONENT IDENTIFICATION 32
230 Volt Electrical Control Box 32
Defrost Control Board 33
COMPONENT TESTING 34
Reversing Valve Description And Operation 34
Testing The Reversing Valve Solenoid Coil 35
Checking The Reversing Valve 36
Touch Test Chart : To Service Reversing Valves 37
Compressor Checks 38
Heating Element and Limit Switches 40
Heater Assembly Removal 41
Drain Pan Valve 42
Check Evaporator Blower Motor and Control Board 43
Replace Evaporator Blower Motor 44
Outdoor Fan Check 45
Outdoor Fan Replacement 46
R-410A SEALED SYSTEM REPAIR 48
Refrigerant Charging 49
Sealed System Method of Charging/ Repairs 50
Undercharged Refrigerant Systems 51
An undercharged system will result in poor performance (low pressures, etc.) in both the heating and cooling cycle. 51
Overcharged Refrigerant Systems 52
Restricted Refrigerant System 53
Compressor Replacement 54
Compressor Replacement -Special Procedure in Case of Compressor Burnout 55
Replace The Reversing Valve 56
WIRING DIAGRAMS 58
208/230V 2.5kW 58
208/230V 3.4 kW 59
208/230V 5kW 60
208/230V 7.5kW 61
208/230V 10kW 62
265V 2.5kW 63
265V 3.4kW 64
TABLE OF CONTENTS

3 PB
265V 5kW 65
265V 7.5kW 66
265V 10kW 67
INTERACTIVE PARTS VIEWER 68
AVAILABLE ACCESSORIES 69
APPENDIX 70
Appendix 1 Thermistor Resistance Values (This Table Applies to All Thermistors) 70
WARRANTY 71
TABLE OF CONTENTS

4 PB
Your safety and the safety of others is very
important.
We have provided many important safety messages in this manual and on your appliance. Always read
and obey all safety messages.
This is a safety Alert symbol.
This symbol alerts you to potential hazards that can kill or hurt you and others.
All safety messages will follow the safety alert symbol with the word
“WARNING”
or “CAUTION”. These words mean:
Indicates a hazard which, if not avoided, can result in severe personal
injury or death and damage to product or other property.
Indicates a hazard which, if not avoided, can result in personal injury and
damage to product or other property.
All safety messages will tell you what the potential hazard is, tell you
how to reduce the chance of injury, and tell you what will happen if the
instructions are not followed.
Indicates property damage can occur if instructions are not followed.
WARNING
Refrigeration system
under high pressure
Do not puncture, heat, expose to flame or
incinerate.
Only certified refrigeration technicians should
service this equipment.
R410A systems operate at higher pressures
than R22 equipment. Appropriate safe service
and handling practices must be used.
Only use gauge sets designed for use with
R410A.
Do not use standard R22 gauge sets.
NOTICE
CAUTION
WARNING
The information in this manual is intended for use by a qualied technician who is familiar with the safety procedures required for installation
and repair, and who is equipped with the proper tools and test instruments required to service this product.
Due to continuing research in new energy-saving technology, all information in this manual is subject to change without notice.
Installation or repairs made by unqualied persons can result in subjecting the unqualied person making such repairs as well as the
persons being served by the equipment to hazards resulting in injury or electrical shock which can be serious or even fatal.
Safety warnings have been placed throughout this manual to alert you to potential hazards that may be encountered. If you install or perform
service on equipment, it is your responsibility to read and obey these warnings to guard against any bodily injury or property damage which
may result to you or others.
INTRODUCTION
Important Safety Information

5 PB
SAFETY
FIRST
WARNING AVERTISSEMENT ADVERTENCIA
Do not remove, disable or
bypass this unit’s safety
devices. Doing so may
cause fire, injuries, or
death.
Ne pas supprime, désactiver
ou contourner cette l´unité
des dispositifs de sécurité,
faire vous risqueriez de
provoquer le feu, les
blessures ou la mort.
No eliminar, desactivar o
pasar por alto los dispositi-
vos de seguridad de la
unidad. Si lo hace podría
producirse fuego, lesiones o
muerte.
ELECTRICAL HAZARDS:
• Unplug and/or disconnect all electrical power to the unit before performing inspections, maintenance, or service.
• Make sure to follow proper lockout/tag out procedures.
• Always work in the company of a qualied assistant if possible.
• Capacitors, even when disconnected from the electrical power source, retain an electrical charge potential capable of causing
electric shock or electrocution.
• Handle, discharge, and test capacitors according to safe, established, standards, and approved procedures.
• Extreme care, proper judgment, and safety procedures must be exercised if it becomes necessary to test or troubleshoot
equipment with the power on to the unit.
• Do not spray water on the air conditioning unit while the power is on.
• Electrical component malfunction caused by water could result in electric shock or other electrically unsafe conditions when
the power is restored and the unit is turned on, even after the exterior is dry.
• Use air conditioner on a single dedicated circuit within the specied amperage rating.
• Follow all safety precautions and use proper and adequate protective safety aids such as: gloves, goggles, clothing, properly
insulated tools, and testing equipment etc.
• Failure to follow proper safety procedures and/or these warnings can result in serious injury or death.
INTRODUCTION
Personal Injury Or Death Hazards
WARNING
ALWAYS USE INDUSTRY STANDARD PERSONAL
PROTECTIVE EQUIPMENT (PPE)

6 PB
• REFRIGERATION SYSTEM REPAIR HAZARDS:
• Use approved standard refrigerant recovering procedures and equipment to relieve high pressure before opening system for
repair. Reference EPA regulations (40 CFR Part 82, Subpart F ) Section 608.
• Do not allow liquid refrigerant to contact skin. Direct contact with liquid refrigerant can result in minor to moderate injury.
• Be extremely careful when using an oxy-acetylene torch. Direct contact with the torch’s ame or hot surfaces can cause
serious burns.
• Make certain to protect personal and surrounding property with re proof materials and have a re extinguisher at hand while
using a torch.
• Provide adequate ventilation to vent off toxic fumes, and work with a qualied assistant whenever possible.
• Always use a pressure regulator when using dry nitrogen to test the sealed refrigeration system for leaks, ushing etc.
• MECHANICAL HAZARDS:
• Extreme care, proper judgment and all safety procedures must be followed when testing, troubleshooting, handling, or working
around unit with moving and/or rotating parts.
• Be careful when, handling and working around exposed edges and corners of the sleeve, chassis, and other unit components
especially the sharp ns of the indoor and outdoor coils.
• Use proper and adequate protective aids such as: gloves, clothing, safety glasses etc.
• Failure to follow proper safety procedures and/or these warnings can result in serious injury or death.
• PROPERTY DAMAGE HAZARDS
• FIRE DAMAGE HAZARDS:
• Read the Installation/Operation Manual for the air conditioning unit prior to operating.
• Use air conditioner on a single dedicated circuit within the specied amperage rating.
• Be extremely careful when using acetylene torch and protect surrounding property.
• Failure to follow these instructions can result in re and minor to serious property damage.
• WATER DAMAGE HAZARDS:
• Improper installation, maintenance or servicing of the air conditioner unit can result in water damage to personal items or
property.
• Insure that the unit has a sufcient pitch to the outside to allow water to drain from the unit.
• Do not drill holes in the bottom of the drain pan or the underside of the unit.
• Failure to follow these instructions can result in damage to the unit and/or minor to serious property damage.
INTRODUCTION
Personal Injury Or Death Hazards

7 PB
INTRODUCTION
Operation of Equipment in During Construction
• OPERATION OF EQUIPMENT MUST BE AVOIDED DURING CONSTRUCTION PHASES WHICH WILL PRO-
DUCE AIRBORNE DUST OR CONTAMINANTS NEAR OR AROUND AIR INTAKE OPENINGS:
• Wood or metal framing;
• Drywalling or sheathing,
• Spackling or applying joint compound.
• Sanding or grinding.
• Moulding or trimwork.
• Concrete dust.
• Insulation .
• Spray foam.
• Stucco spray and mortar.
• Plastic sheathing.
NOTICE
Operating the equipment during any phase of
active construction noted above can void the
equipment’s warranty, and also lead to poor
performance and premature failure.

8PB
INTRODUCTION
This service manual is designed to be used in conjunction with the installation and operation manuals provided with each air conditioning
system.
This service manual was written to assist the professional service technician to quickly and accurately diagnose and repair malfunctions.
Due to continuing research in new energy-saving technology, all information in this manual is subject to change without notice.
Installation procedures are not given in this manual. They are given in the Installation and Operation Manual which can be acquired on the
website (www.friedrich.com).
Equipment Identication
Figure 101 (Equipment Identication Example)

 
 
 
 

9 PB
INTRODUCTION
Model Number Identication Guide
IMPORTANT: It will be necessary for you to accurately identify the unit you are servicing, so you can be certain of a proper
diagnosis and repair.
Figure 102 (Model Number Identication)
MODEL IDENTIFICATION GUIDE
MODEL NUMBER V H A 09 K
Electric Heater Size
A Series
25 = 2.5 kW
34 = 3.4 kW
50 = 5.0 kW
75 = 7.5 kW*
10 = 10.0 kW**
34 RT Q
Marketing Revision
Options
RT = Standard Remote Operation
Voltage
K = 208/230V-1Ph-60Hz
R = 265V-1Ph-60Hz
Series
V = Friedrich® Series
* ONLY AVAILABLEON THE18 & 24 K/R MODELS
**ONLY AVAILABLE ON THE 24 K/R MODELS
Nominal Capacity
09 = 9,000 Btu/hr 18 = 18,000 Btu/hr
12 = 12,000 Btu/hr 24 = 24,000 Btu/hr
HA = Air-Source Heat Pump
Serial Number Identication Guide
YEAR OF MANUFACTURE
23 = 2023 24 = 2024
25 = 2025 26 = 2026
MONTH OF MANUFACTURE
01 = JANUARY
02 = FEBRUARY
03 = MARCH
04 = APRIL
05 = MAY
06 = JUNE
07 = JULY
08 = AUGUST
09 = SEPTEMBER
10 = OCTOBER
11 = NOVEMBER
12 = DECEMBER
MANUFACTURING LOCATION
NUMERIC SEQUENCE
FIRST UNIT OF EACH MONTH = 00001
24 12 M 00001
Figure 103 (Serial Number Identication)

10 PB
SPECIFICATIONS
Electrical Specications
Models Compres-
sor Amps
Total
Amps in
Electric
Heat Op
Electric
Heat Watts
Electric
Heat
Amps
Compressor
RLA/LRA
Blower
Motor
FLA/HP
Condenser
Motor FLA/
HP
MCA Max Fuse
VHA09K25RTQ-A 6.8 11.5/10.4 2450/2000 10.7/9.6 4.2/21 0.8 - 1/8 1.8 - 1/4 14.4 15
VHA09K34RTQ-A 6.8 15.4/14.0 3350/2740 14.6/13.2 4.2/21 0.8 - 1/8 1.8 - 1/4 19.3 20
VHA09K50RTQ-A 6.8 22.5/20.5 5000/4090 21.7/19.7 4.2/21 0.8 - 1/8 1.8 - 1/4 28.2 30
VHA09R25RTQ-A 6.8 10 2450 9.2 4.2/21 0.8 - 1/8 1.8 - 1/4 12.5 15
VHA09R34RTQ-A 6.8 13.4 3350 12.6 4.2/21 0.8 - 1/8 1.8 - 1/4 16.8 20
VHA09R50RTQ-A 6.8 19.7 5000 18.9 4.2/21 0.8 - 1/8 1.8 - 1/4 24.7 25
VHA12K25RTQ-A 7.3 11.5/10.4 2450/2000 10.7/9.6 4.7/23 0.8 - 1/8 1.8 - 1/4 14.4 15
VHA12K34RTQ-A 7.3 15.4/14.0 3350/2740 14.6/13.2 4.7/23 0.8 - 1/8 1.8 - 1/4 19.3 20
VHA12K50RTQ-A 7.3 22.5/20.5 5000/4090 21.7/19.7 4.7/23 0.8 - 1/8 1.8 - 1/4 28.2 30
VHA12R25RTQ-A 7.3 10 2450 9.2 4.7/23 0.8 - 1/8 1.8 - 1/4 12.5 15
VHA12R34RTQ-A 7.3 13.4 3350 12.6 4.7/23 0.8 - 1/8 1.8 - 1/4 16.8 20
VHA12R50RTQ-A 7.3 19.7 5000 18.9 4.7/23 0.8 - 1/8 1.8 - 1/4 24.7 25
VHA18K25RTQ-A 9.1 11.5/10.4 2450/2000 10.7/9.6 6.8/30 0.8 - 1/5 1.5 - 1/4 14.4 15
VHA18K34RTQ-A 9.1 15.4/14.0 3350/2740 14.6/13.2 6.8/30 0.8 - 1/5 1.5 - 1/4 19.3 20
VHA18K50RTQ-A 9.1 22.5/20.5 5000/4090 21.7/19.7 6.8/30 0.8 - 1/5 1.5 - 1/4 28.2 30
VHA18K75RTQ-A 9.1 33.4/30.3 7500/6135 32.6/29.5 6.8/30 0.8 - 1/5 1.5 - 1/4 41.8 45
VHA18R25RTQ-A 9.1 10 2450 9.2 6.8/30 0.8 - 1/5 1.5 - 1/4 12.5 15
VHA18R34RTQ-A 9.1 13.4 3350 12.6 6.8/30 0.8 - 1/5 1.5 - 1/4 16.8 20
VHA18R50RTQ-A 9.1 19.7 5000 18.9 6.8/30 0.8 - 1/5 1.5 - 1/4 25.3 30
VHA18R75RTQ-A 9.1 29.1 7500 28.3 6.8/30 0.8 - 1/5 1.5 - 1/4 36.4 40
VHA24K25RTQ-A 10.7 11.5/10.4 2450/2000 10.7/9.6 8.2/44 0.8 - 1/5 1.7 - 1/4 16 20
VHA24K34RTQ-A 10.7 15.4/14.0 3350/2740 14.6/13.2 8.2/44 0.8 - 1/5 1.7 - 1/4 19.5 25
VHA24K50RTQ-A 10.7 22.5/20.5 5000/4090 21.7/19.7 8.2/44 0.8 - 1/5 1.7 - 1/4 29.6 30
VHA24K75RTQ-A 10.7 33.4/30.3 7500/6135 32.6/29.5 8.2/44 0.8 - 1/5 1.7 - 1/4 41.8 45
VHA24K10RTQ-A 10.7 44.3/40.1 1000/8180 43.5/39.3 8.2/44 0.8 - 1/5 1.7 - 1/4 55.4 60
VHA24R25RTQ-A 10.7 10 2450 9.2 8.2/44 0.8 - 1/5 1.7 - 1/4 15.3 20
VHA24R34RTQ-A 10.7 13.4 3350 12.6 8.2/44 0.8 - 1/5 1.7 - 1/4 18.3 20
VHA24R50RTQ-A 10.7 19.7 5000 18.9 8.2/44 0.8 - 1/5 1.7 - 1/4 27.1 30
VHA24R75RTQ-A 10.7 29.1 7500 28.3 8.2/44 0.8 - 1/5 1.7 - 1/4 36.4 40
VHA24R10RTQ-A 10.7 38.5 10000 37.7 8.2/44 0.8 - 1/5 1.7 - 1/4 48.2 50
Table 104 (Electrical Specifications)

11 PB
SPECIFICATIONS
General Specications
Model VHA09K VHA09R VHA12K VHA12R VHA18K VHA18R VHA24K VHA24R
Cooling Data
Total Cap @
95˚F 9,000 8,800 11,000 11,000 17,600 17,400 21,800 21,600
Sensible Cap 6,650 6,650 8,100 8,100 12,500 12,500 15,400 15,000
SEER2 11.9 11.9 11.9 11.9 11.9 11.9 11.9 11.9
EER2 10.6 10.6 10.6 10.6 10.6 10.6 10.6 10.6
Heating Data
Total Cap @
47˚F 8200 8200 10,400 10,400 16,000 16,000 18,500 18,500
Cap @ 17˚F 4,500 4,500 5,600 5,600 9,000 9,000 12,000 12,000
COP2 3.1 3.1 3.1 3.1 3.1 3.1 3.1 3.1
HSPF2 6.3 6.3 6.3 6.3 6.3 6.3 6.3 6.3
Heater Sizes 2.5/3.4/5.0 2.5/3.4/5.0 2.5/3.4/5.0 2.5/3.4/5.0 2.5/3.4/ 5.0/7.5 2.5/3.4/ 5.0/7.5 2.5/3.4/5.0/
7.5/10.0
2.5/3.4/5.0/
7.5/10.0
Voltage 208/230 265 208/230 265 208/230 265 208/230 265
Other Data
Refrigerant R410a
Dimensions 23x23x32
Ventilation
CFM Up to 70 CFM
Airflow (0.3”)
CFM 300 350 550 600
Table 105 ( general Specifications)
Electrical Requirements
ELECTRICAL REQUIREMENTS
SEE UNIT NAMEPLATE FOR SPECIFIC ELECTRICAL
REQUIREMENTS.
FUSE/CIRCUIT
BREAKER
USE ONLY TYPE AND SIZE FUSE OR HACR
CIRCUIT BREAKER INDICATED ON UNIT’S
RATING GUIDE. PROPER OVER CURRENT
PROTECTION TO THE UNITS IS THE
RESPONSIBILITY OF THE OWNER.
GROUNDING UNIT MUST BE GROUNDED FROM
BRANCH CIRCUIT TO UNIT, OR THROUGH
SEPARATE GROUND WIRE PROVIDED
ON PERMANENTLY CONNECTED UNITS.
ENSURE THAT BRANCH CIRCUIT
OR GENERAL PURPOSE OUTLET IS
GROUNDED.
WIRE SIZING ALL WIRING MUST COMPLY WITH LOCAL
AND NATIONAL CODES. NOTE: USE COPPER
CONDUCTORS ONLY. USE MINIMUM AMPACITY
RATINGS TO DETERMINE BRANCH CIRCUIT
WIRING SIZES.
WARNING
Electrical Shock Hazard.
Turn OFF electric power before service or instal-
lation.
Unit must be properly grounded.
Unit must have correct fuse or circuit breaker pro-
tection. Unit’s supply circuit must have the correct
wire conductor size. All electrical connections and
and conform to the National Electrical Code and all
local codes which have jurisdiction. Failure to do so
can result in property
damage, personal injury and/or death.

12 PB
Vert-I-Pak is designed to install through an exterior wall with a plenum (VPAWP1-8, VPAWP1-14) and an external louver. If the default
plenum and louver combinations are not used, the selections and design must be evaluated by us to ensure the total pressure drop does not
exceed the maximum allowable limits.
Condenser External Pressure
Model Design Maximum
CFM ESP (“WP) ESP (“WP)
VHA09 650 0.03 0,12
VHA12 650 0.03 0,12
VHA18 950 0.03 0,12
VHA24 950 0.03 0,12
Table 106 (Airow Data)
SPECIFICATIONS
Airow Data (Condenser)

13 PB
SPECIFICATIONS
Chassis Specications 9K, 12K
Figure 202 (9-12K Chassis Specs)
6
Chassis Dimensions - VHA09/VHA12
PARTNO.
SPEC
CHECKED
ENGINEER
TITLE
MATERIAL
DRAWN
SCALE PART NO.
FINISH
SPEC
ENGRG. ONLY
REV DESCRIPTION
BY
DATE DATE
CHKD E.C.N.
NO.
UNLESS OTHERWISE
SPECIFIED, DIMENSIONS
ARE IN INCHES
DO NOT SCALE DRAWINGS
WORK TO DIMENSIONS
"THE DESIGN AND DETAIL OF THIS DRAWING IS CONFIDENTIAL AND PROPRIETARY TO FRIEDRICH AIR CONDITIONING CO.
AND SHALL NOT BE DISCLOSED TO ANYONE WITHOUT PRIOR WRITTEN AUTHORIZATION OF FRIEDRICH."
ANGLES

DECIMALS 
TOLERANCE
VPAK SMALL
VIEWS
10/26/2023
franco.garcia
HOLES, SLOTS, AND
CUTOUTS ±.002
VPAKSMALL
VIEWS
~~
~
2°
.062
WHERE USE:
BLUE DOTTED
TYPE DIMENSIONS
ARE FOR FAI'S
10.297
19.056
30.791
PARTNO.
SPEC
CHECKED
ENGINEER
TITLE
MATERIAL
DRAWN
SCALE PART NO.
FINISH
SPEC
ENGRG. ONLY
REV DESCRIPTION
BY
DATE DATE
CHKD E.C.N.
NO.
UNLESS OTHERWISE
SPECIFIED, DIMENSIONS
ARE IN INCHES
DO NOT SCALE DRAWINGS
WORK TO DIMENSIONS
"THE DESIGN AND DETAIL OF THIS DRAWING IS CONFIDENTIAL AND PROPRIETARY TO FRIEDRICH AIR CONDITIONING CO.
AND SHALL NOT BE DISCLOSED TO ANYONE WITHOUT PRIOR WRITTEN AUTHORIZATION OF FRIEDRICH."
ANGLES

DECIMALS 
TOLERANCE
VPAK SMALL
VIEWS
10/26/2023
franco.garcia
HOLES, SLOTS, AND
CUTOUTS ±.002
VPAKSMALL
VIEWS
~ ~
~
2°
.062
WHERE USE:
BLUE DOTTED
TYPE DIMENSIONS
ARE FOR FAI'S
NOTES:
1. OVAL DIMENSIONS ARE CRITICAL. ALL OTHER DIMENSIONS ARE REFERENCE FOR MANUFACTURING PURPOSES. BLUE
DIMENSIONS ARE FOR QUALITY PORPUSES.
2. FRIEDRICH PRODUCT ENGINEERING MUST BE NOTIFIED PRIOR TO ANY DESIRED SPECIFICATION CHANGES.
23.247
14.255
DUCT DIMENSION
.954
29.291
1.500
23.609
1.500 15.250
4.154 DUCT DIMENSION

14 PB
SPECIFICATIONS
18K Dimensions
Figure 203 (18K Chassis Specs)
7
Chassis Dimensions - VHA18
PARTNO.
SPEC
CHECKED
ENGINEER
TITLE
MATERIAL
DRAWN
SCALE PART NO.
FINISH
SPEC
ENGRG. ONLY
REV DESCRIPTION
BY
DATE DATE
CHKD E.C.N.
NO.
UNLESS OTHERWISE
SPECIFIED, DIMENSIONS
ARE IN INCHES
DO NOT SCALE DRAWINGS
WORK TO DIMENSIONS
"THE DESIGN AND DETAIL OF THIS DRAWING IS CONFIDENTIAL AND PROPRIETARY TO FRIEDRICH AIR CONDITIONING CO.
AND SHALL NOT BE DISCLOSED TO ANYONE WITHOUT PRIOR WRITTEN AUTHORIZATION OF FRIEDRICH."
ANGLES

DECIMALS 
TOLERANCE
DWG ASSY REFRIG MFG
VPAK18
NEW VPAK
LARGE 2023
11/1/2023
SB
11/1/2023
IR
11/1/2023
DC
HOLES, SLOTS, AND
CUTOUTS ±.002
NEWVPAKLARGE
2023
~ ~
~
2°
.062
WHERE USE:
VPAK
BLUE DOTTED
TYPE DIMENSIONS
ARE FOR FAI'S
20.500
DUCT DIMENSION
21.862
19.178
PARTNO.
SPEC
CHECKED
ENGINEER
TITLE
MATERIAL
DRAWN
SCALE PART NO.
FINISH
SPEC
ENGRG. ONLY
REV DESCRIPTION
BY
DATE DATE
CHKD E.C.N.
NO.
UNLESS OTHERWISE
SPECIFIED, DIMENSIONS
ARE IN INCHES
DO NOT SCALE DRAWINGS
WORK TO DIMENSIONS
"THE DESIGN AND DETAIL OF THIS DRAWING IS CONFIDENTIAL AND PROPRIETARY TO FRIEDRICH AIR CONDITIONING CO.
AND SHALL NOT BE DISCLOSED TO ANYONE WITHOUT PRIOR WRITTEN AUTHORIZATION OF FRIEDRICH."
ANGLES
DECIMALS
TOLERANCE
DWG ASSY REFRIG MFG
VPAK18
NEW VPAK
LARGE 2023
11/1/2023
SB
11/1/2023
IR
11/1/2023
DC
HOLES, SLOTS, AND
CUTOUTS ±.002
NEWVPAKLARGE
2023
~ ~
~
2°
.062
WHERE USE:
VPAK
BLUE DOTTED
TYPE DIMENSIONS
ARE FOR FAI'S
NOTES:
1. OVAL DIMENSIONS ARE CRITICAL. ALL OTHER DIMENSIONS ARE REFERENCED FOR MANUFACTURING PURPOSES. BLUE
DIMENSIONS ARE FOR QUALITY PORPUSES.
2. FRIEDRICH PRODUCT ENGINEERING MUST BE NOTIFIED PRIOR TO ANY DESIRED SPECIFICATION CHANGES.
3. PARTS TO BE FINAL PACKAGED TO PREVENT DAMAGE OR CONTAMINATION DURING SHIPMENT AND STORAGE.
4. PART BULK PACKAGING IDENTIFICATION TO COMPLY WITH FRIEDRICH BASIC SPECIFICATION PP1700.
8.668
8.204
2.753
8.721
2.192
1.521
22.991
11.509
29.531
23.072
6.725 DUCT DIMENSION
39.928
42.681
46.942
20.385
22.947

15 PB
SPECIFICATIONS
24K Dimensions
Figure 204 24K Chassis Specs)
8
Chassis Dimensions - VHA24
PARTNO.
SPEC
CHECKED
ENGINEER
TITLE
MATERIAL
DRAWN
SCALE PART NO.
FINISH
SPEC
ENGRG. ONLY
REV DESCRIPTION
BY
DATE DATE
CHKD E.C.N.
NO.
UNLESS OTHERWISE
SPECIFIED, DIMENSIONS
ARE IN INCHES
DO NOT SCALE DRAWINGS
WORK TO DIMENSIONS
"THE DESIGN AND DETAIL OF THIS DRAWING IS CONFIDENTIAL AND PROPRIETARY TO FRIEDRICH AIR CONDITIONING CO.
AND SHALL NOT BE DISCLOSED TO ANYONE WITHOUT PRIOR WRITTEN AUTHORIZATION OF FRIEDRICH."
ANGLES

DECIMALS 
TOLERANCE
VPAK 24 VIEWS
7/13/2023
franco.garcia
HOLES, SLOTS, AND
CUTOUTS ±.002
VPAK24VIEWS
~ ~
~
2°
.062
WHERE USE:
BLUE DOTTED
TYPE DIMENSIONS
ARE FOR FAI'S
25.861
19.173
20.500
DUCT DIMENSION
PARTNO.
SPEC
CHECKED
ENGINEER
TITLE
MATERIAL
DRAWN
SCALE PART NO.
FINISH
SPEC
ENGRG. ONLY
REV DESCRIPTION
BY
DATE DATE
CHKD E.C.N.
NO.
UNLESS OTHERWISE
SPECIFIED, DIMENSIONS
ARE IN INCHES
DO NOT SCALE DRAWINGS
WORK TO DIMENSIONS
"THE DESIGN AND DETAIL OF THIS DRAWING IS CONFIDENTIAL AND PROPRIETARY TO FRIEDRICH AIR CONDITIONING CO.
AND SHALL NOT BE DISCLOSED TO ANYONE WITHOUT PRIOR WRITTEN AUTHORIZATION OF FRIEDRICH."
ANGLES

DECIMALS 
TOLERANCE
VPAK 24 VIEWS
7/13/2023
franco.garcia
HOLES, SLOTS, AND
CUTOUTS ±.002
VPAK24VIEWS
~ ~
~
2°
.062
WHERE USE:
BLUE DOTTED
TYPE DIMENSIONS
ARE FOR FAI'S
NOTES:
1. OVAL DIMENSIONS ARE CRITICAL. ALL OTHER DIMENSIONS ARE REFERENCE FOR MANUFACTURING PURPOSES. BLUE
DIMENSIONS ARE FOR QUALITY PORPUSES.
2. FRIEDRICH PRODUCT ENGINEERING MUST BE NOTIFIED PRIOR TO ANY DESIRED SPECIFICATION CHANGES.
22.970
6.725 DUCT DIMENSION
43.992
46.651
50.913
22.880
20.300
1.521 2.705
8.5128.673
2.191
29.599
15.459

16 PB
SPECIFICATIONS
Required Minimum Clearances
Figure 205
11
Vert-I-Pak Required Minimum Clearances
Building Exterior Unit Opening Requirements
Vert-I-Pak units must be installed on an outside wall. Conned spaces and/or covered areas should be avoided. Units must
be installed no closer than 12” apart when two units are side by side. If three or more units are to operate next to one
another, maintain a minimum of 60” between units or pairs of units (Figure B). If more than two units are sharing a oor with
adjacent, outset units, a minimum distance of 64” must be kept between units (Figure C). Also, a vertical clearance of 60” must
be maintained (Figure A) between units. Units installed on the bottom oor must be mounted at least 6” off of the ground.If two
units are facing each other, a minimum distance of 108” must be kept between units (Figure D).
Grill Clearance Requirements
Where obstructions are present use the fol-
lowing guidelines for proper spacing from
the Vert-I-Pak exterior louvered grill. Fried-
rich recommends that ALL obstructions are
a minimum of 72” from the exhaust.
For minor obstruction(s) such as lamp poles
or small shrubbery, a clearance of 24” from
the outdoor louver must be maintained.
For major obstructions such as a solid fence,
wall, or other heat rejecting devices like a
condensing unit, a minimum distance of 72”
must be kept.
BUILDING
24"
POLE
SHRUB
FENCE
MAJOROBSTRUCTIONS
OUTDOOR
CONDENSING
UNIT
VPAK VPAK VPAK
The the example pictured above is for reference only and does not represent all possible installations. Please contact Friedrich
Air Conditioning for information regarding effects of other installation arrangements.
6"
60"60"
60"
60"
60"
60"
60"
60"
60"
6"
6"
12"
60"
60"
64"
160 “
32 “
Figure A Figure B Figure C Figure D
108 “
108 “
Figure E

17 PB
SPECIFICATIONS
Closet Orientations & Dimensions
12
Closet Orientations & Dimensions

)URQW,QVWDOODWLRQ7RS9LHZ
/HIW,QVWDOODWLRQ7RS9LHZ
5LJKW,QVWDOODWLRQ7RS9LHZ


 

 
 
 








 
 

4 1/2










 

 
23 1/8"
23 1/8"
23 1/8"
23 1/8"
23 1/8"
23 1/8"
31 1/8"
31 1/8"
30 5/8"
30 5/8"
3"
26 1/8"
29 1/8"
27"
27"
27"
While all installation orientations are feasible, for the ease of installation and serviceability, Friedrich recommends Front Installation.
NOTE: It is recommended
that 6” of clearance is
provided on the side where
the primary condensate
is plumbed.
NOTE: It is recommended that
6” of clearance is provided on
the side where the primary
Condensate is plumbed.
NOTE: It is recommended
that 6” of clearance is
provided on the side
where the primary
condensate is plumbed.

18 PB
SPECIFICATIONS
Closet View
13
Closet View
NOTE: It is recommended that 6” of clearance is provided on the side where the primary condensate is plumbed.
Exterior Wall
Flexible Ductwork
Rigid Ductwork
VPAWP1-8/1-14 Wall Plenum
Plenum
Divider
VPDP2 drain pan beneath
unit is required on all 18K
and 24K units.
Drain pan must be installed
prior to chassis installation
Chassis is shipped
with vibration isolators
installed
Optimal Clearance on
either sides minimum for
service and installation
Optional Platform
Field-supplied
Filter (25" x 20")
58"
29"
Transition Duct
VPRG4/VPRG4R
Access Panel & Return
Air Filter Grille
Power
Disconnect

19 PB
SPECIFICATIONS
Wall Opening Dimensions
14
Dimensions (W x H):
27” x 55 3/4”
Dimensions (W x H):
24 5/8” x 30 7/8”
Wall Opening Dimensions
NOTE: The distance between the rough opening
and the finished floor/platform must be 1
1
”
”
.
.
1”
Return Air Access Door Wall Cut-Out
27”
55 3/4”
Exterior Wall Plenum Cut-Out

20 PB
Power-up
When power is applied to the unit (230 VAC), L1 and L2 provide power to energize all relays, contactors, and control boards receive
power. 1 leg of the compressor is energized. Power is supplied to the transformer which provides 24 VAC to the thermostat and the
defrost control board.
When power is applied to the unit (265 VAC), L1 and L2 provide power to the heater relays, the main transformer which steps down
the voltage from 265 VAC to 230 VAC. 230 VAC energizes all other relays, contactors, and control boards. 1 leg of the compressor is
energized. Power is supplied to the secondary transformer which provides 24 VAC to the thermostat and the defrost control board.
When power is rst applied to the Defrost control board, the defrost timers are reset and the short cycle timer is cleared. All
defrost mode calibration is cleared when power is applied to the control. If the power to the control is interrupted for less than 20
milliseconds, the control shall resume operation at the same point in the timing cycle.
The control shall not change modes of operation due to a power interruption of less than 20 milliseconds. Relays may temporarily
drop out during the power interruption. Power interruptions greater than 100 milliseconds may reset the control as a power-up
sequence. Power interruptions of any duration are not to cause lockout.
Fan only mode
Thermostat sends a G signal to energize the indoor fan motor relay (IMR) closing contacts 2 and 4 providing power to the low voltage
tap on the indoor motor controller.
The indoor motor controller provides a constant low voltage dc signal for static operation.
Emergency Heat
If thermostat provides W2 signal to safety relay (SR) it will energize the safety relay which removes power to the compressor and
provides power to pin 5 of the indoor fan motor relay (IMR), which provides power to the LI pin on ID motor controller for low speed
ID fan operation.
Simultaneously power is provided to energize the heat relay (HR) and the defrost heat relay (DHR) so that L1 and L2 of the heater
legs are energized providing power to the electric heat strips. Basepan heat is also provided at this time.
Compressor Contactor Operation
Anti-Short Cycle Delay (ASCD)
The Anti-Short Cycle time Delay is 3-minutes. This delay is active at power up and when the compressor has been de-energized. The
ASCD will not be reset during the 30-second compressor delay time after reversing valve change of state.
Compressor Operation
If the control receives a call for compressor operation “Y”, in heating or cooling, the compressor contactor output “Y out” will be
energized immediately, or immediately after the ASCD timer has expired, whichever occurs last. The control shall de-energize the
contactor output immediately when the “Y” signal is removed.
Enable Temperature
If the condenser coil temperature is above 35˚F, all defrost functions are disabled.
Ambient Sensor Failure Detection
If the ambient temperature sensor is detected as being open or shorted, the control will operate as shown in Table 5.2.4 Thermistor
resistance values greater than 280K ohms (below -35˚F) or resistance values less than 3.75K ohms (above 120˚F) measured on the
ambient sensor will trigger this failure condition.
Condenser Coil Sensor Failure Detection
If the coil temperature sensor is detected as being open or shorted, the control will operate as shown in Table 501 Thermistor
resistance values greater than 280K ohms (below -35˚F) or resistance values less than 3.75K ohms (above 120˚F) measured on the
coil sensor will trigger this failure condition.
Ambient probe Coil Probe Ambient Temp Coil Temp Defrost Action Defrost Termination
Bad Good N/A ≤ 30˚F Begins after 60 minutes
accumulated run time
Time/Temp:
14 minutes or termination temperature
Bad Good N/A > 30˚F No defrost N/A
Good Bad ≤ 42˚F N/A Begins after 60 minutes
accumulated run time
Time/Temp:
14 minutes
Good Bad > 42˚F N/A No defrost N/A
Table 501 (Sensor Conditions)
OPERATION
Sequence of Operation