Friedrich VHA24K25 Series Original operating instructions

920-159-02 (10-04)
VERT-I-PAK®A-SERIES
SINGLE PACKAGE
VERTICAL AIR
CONDITIONING SYSTEM
24,000 BTU/h
INSTALLATION &
OPERATION GUIDE

2
920-159-02 (10-04)
Table of Contents
Installation Recommendations......................................................................................................................................................... 3
I. General Specifications
Model Number Identification Guide ................................................................................................................................... 4
VERT-I-PAK Chassis Specifications ................................................................................................................................... 4
II. Installation
1. Utility Closet Dimensions ................................................................................................................................................... 5
2. Wall Plenum & Architectural Louver Installation ................................................................................................................ 6
3. Electrical Information .....................................................................................................................................................7-9
4. Indoor Return Air Grille Installation .................................................................................................................................. 10
5. Ductwork Preparation and CFM ....................................................................................................................................... 11
6. Chassis Installation.......................................................................................................................................................... 11
7. Chassis Final Connections (Electrical, Duct, Drain & Wall Thermostat)............................................................................ 12
8. Final Installation Checklist............................................................................................................................................... 12
III. Chassis Operation
9. Thermostat Control ..........................................................................................................................................................12
10. Low Ambient Protection for Compressor & Fan ................................................................................................................12
11. Heating Defrost (Heat Pump Models only)........................................................................................................................ 12
12. Fresh Air Door................................................................................................................................................................... 13
13. Condensate Disposal System .......................................................................................................................................... 13
IV. Service, Maintenance & Warranty
14. Servicing / Chassis Quick Changeouts............................................................................................................................. 13
15. Routine Maintenance....................................................................................................................................................... 13
16. Warranty .......................................................................................................................................................................... 14
V. Vert-I-Pak Accessories .................................................................................................................................................... 15
Please read this manual thoroughly prior to equipment installation or operation. It is the installer’s
responsibility to properly apply and install the equipment. Installation must be in conformance with
the NFPA 70-2002 National Electric Code or current edition and Universal Mechanical Code current
edition and applicable local or national codes.
Proper installation is not difficult but it is essential.

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920-159-02 (10-04)
Vert-I-Pak Installation Recommendations
For proper unit performance and maximum operating life please refer to the minimum installation clearances below.
The above suggestions are for reference only and do not represent all possible installations. Please contact the factory
for information regarding affects of other installation arrangements.
By following these simple recommendations you can be confident that your Friedrich Vert-I-Pak®will provide years
of worry-free operation.
Figure 2
Figure 1
Any time obstructions are present use
the following guidelines for proper
spacing from the VERT-I-PAK louver:
• For minor obstructions such as lamp
poles or small shrubbery a clearance
of 24" from the outdoor louver should
be maintained.
• For major obstructions such as a solid
fence, wall or other heat rejecting
device like a condensing unit, a mini-
mum distance of 72" should be kept.
12"
24"60"
VPAK VPAK VPAK
POLE
FENCE
MAJOR OBSTRUCTION
BUILDING
OUTDOOR
CONDENSING
UNIT
72"
24"
SHRUB
VERT-I-PAK
®
units must be installed on an outside wall. Confined spaces and/or covered areas should be
avoided. Units should be installed no closer than 12" apart when two units are side by side. If three of more
units are to operate next to one another allow a minimum of 60" between units or pairs of units. Also, a vertical
clearance of 60" should be maintained between units. Units installed on the bottom floor should be mounted
at least 6" off of the ground.
A
B
60"60"
60"
60"
LARGER RECESS OK. IF A> 5xB
12"
6"
60"
60"
60"
6"
60"
60"
6"
60" 60"
SMALL RECESS OK

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920-159-02 (10-04)
Vert-I-Pak®Chassis Specifications
MODEL: V(E,H)A24
Voltage (V) 230/208
Refrigerant R-22
Chassis Width 23.125
Chassis Depth 23.125
Chassis Height ** 47.25
Supply Duct Collar *** 10"
Drain Connection 3/4" FPT
Min. Circuit Amps See Nameplate
CFM Indoor See chart, pg. 11
Max. Duct ESP .4 in. water
NOTES:
** Height includes 2" duct collar & isolators under unit.
*** Factory collar accepts 10" flex duct.
Section I. General Specifications
VERT-I-PAK®MODEL IDENTIFICATION GUIDE
MODEL NUMBER V E A 24 K 50 RT A
SERIES
ELECTRIC HEATER SIZE
A-Series
00 = No electric heat
25 = 2.5 KW
34 = 3.4 KW
50 = 5.0 KW
75 = 7.5 KW
10 = 10 KW
A-Series (Btu/h)
09 = 9,000
12 = 12,000
18 = 18,000
24 = 24,000
ENGINEERING CODE
OPTIONS
RT = Standard Remote Operation
SP = Seacoast Protected
VOLTAGE
K = 208/230V-1Ph-60Hz
V=Vertical Series
E=Cooling with or without electric heat
H=Heat Pump
DESIGN SERIES
A = 32" and 47" Cabinet
NOMINAL CAPACITY

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920-159-02 (10-04)
electrical
entrance
control box
Figure 4
Top View
II. Installation
1) Utility Closet Dimensions
Recommended utility closet dimensions and a typical indoor installation are illustrated in Figure 1. Three inches minimum clearance on
three sides of the unit must be allowed for return airflow, installation access and service access. See Figures 1 & 2 for clearances and
reference dimensions.
NOTE: Drain pan must be installed in closet prior to chassis
insertion into plenum. See Figure 7 (page 8) for drain pan
installation details.
•Vert-I-Pak Chassis 2-ton dimensions:
23" wide x 23" deep x 47 1/4" high.
•VPAWP1-8/1-14 Wall Plenum cut-out
dimensions 24 5/8" wide x 30 7/8" high.
•VPRG4 Access Panel cutout dimensions:
27" wide by 55 3/4" high.
•See Figure 8 (Page 10) for proper
chassis installation.
Figure 3
Typical Utility Closet
Chassis Shown in Closet, on Optional Platform
Exterior Wall
Flexible Ductwork
Rigid Ductwork
VPAWP1-8/1-14 Wall Plenum
Plenum
VPDP1 drain pan
beneath unit is
required on all
VEA/VHA24 units.
Drain pan must be
installed prior to
chassis installation
Chassis is
shipped with
vibration
isolators
installed
3" Clearance on all
three sides minimum for
service and installation
Optional Platform
Field-supplied
Filter (25" x 20")
58"
29"
Optional field
installed drain pan
(refer to local codes)
VPRG4 Access Panel &
Return Air Filter Grille
Power
Disconnect

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920-159-02 (10-04)
2) Wall Plenum and Architectural Louver Installation
A. Install the wall plenum (VPAWP1-8/1-14) components in accordance with the installation instructions provided with each accessory.
B. Ensure that the divider is adjusted properly for the depth of the wall in accordance with the accessory installation manual
Figure 5
Caulk all 8
flange corners
Proper Header
Proper Flashing
Proper Flashing
Proper Caulking
Outside Wall
Proper Caulking
Architectural louver VPAL2 mounted
on the outside wall plenum (Part A)
Inside Wall Plenum
(Part B)
Wall Plenum & Outdoor Louver Installation
•Rough opening dimension 24 5/8" wide x 30 7/8" high.
•Ensure that the bottom of the plenum is 1 1/2" from the floor of the closet. Note: 9,000 / 12,000 / 18,000 installation
height may be different. Refer to specific installation manual for clarification.
•For proper airflow, maintain a minimum distance of 12" between Vert-I-Pak units. Consult the factory for any
installation or application questions.
IMPORTANT REMINDER: FRIEDRICH WALL PLENUM IS NOT DESIGNED TO CARRY STRUCTURAL
LOADS. PROPER WALL HEADER CONSTRUCTION IS REQUIRED. THE PLENUM REQUIRES
PROPER FLASHING, SHIM AND CAULK FOR A WEATHER RESISTANT INSTALLATION.

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920-159-02 (10-04)
3) Electrical Information
Electrical Data
* Single circuit from main box. Based on copper wire, single insulated conductor at 60°C.
NOTE: Use copper conductors ONLY. Wire sizes are per NEC. Check local codes for overseas applications.
SAMPLE
VHA/VEA24K25
VHA/VEA24K34
VHA/VEA24K50
VHA/VEA24K75
VHA/VEA24K10
230/208 230/208 230/208 230/208 230/208 230/208
68 68 68 68 68 68
13.7/12.4 13.7/12.4 13.7/12.4 13.7/12.4 13.7/12.4 13.7/12.4
17.2/15.9 22.1/20.3 30.7/28.1 44.3/40.3 57.9/52.7 15.6/15.6
25/25 25/25 35/30 45/45 60/60 20/20
HARD WIRED
14/14 12/12 8/10 6/6 4/6 14/14
Voltage ( V)
LRA - Comp. (A)
Cooling Current (A)
MIN. Ckt. Amps (A)
Max Branch Circuit Fust (Amps)
Power Connection
Recommended Branch
Circuit Wire Sizes*
AWG - American Wire Gauge
MODEL
VHA/VEA24K00
Sample Nameplate (see your chassis nameplate)

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920-159-02 (10-04)
3) Electrical Information (continued)
IMPORTANT: ALL 208/230V CHASSIS MUST BE HARD WIRED WITH PROPERLY SIZED
BREAKER. SEE NAMEPLATE FOR SPECIFIC CHASSIS ELECTRICAL REQUIREMENTS.
SEE PAGE 9 - FIGURE 8 FOR UNIT WIRING AND WALL THERMOSTAT WIRING. SEE PAGE
7 FOR WIRE SIZE. USE HACR TYPE BREAKERS TO AVOID NUISANCE TRIPS. ALL FIELD
WIRING MUST BE DONE IN ACCORDANCE WITH NEC AND LOCAL CODES.
Electrical Requirements
Figure 6
Note: All field wiring must comply with NEC and local codes. It
is the responsibility of the installer to insure that the electrical
codes are met.
Wire Size Use ONLY wiring size recommended for single
outlet branch circuit.
Fuse/Circuit
Breaker
Use ONLY type and size fuse or HACR circuit
breaker indicated on unit's rating plate (See sample
on page 6). Proper current protection to the unit 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. Be sure that branch
circuit or general purpose outlet is grounded.
Wire Sizing
Use recommended wire size given in tables and
install a single branch circuit. All wiring must comply
with local and national codes. NOTE: Use copper
conductors only.
CAUTION
Electric shock hazard.
Turn OFF electric power before service
or installation.
All electrical connections and wiring MUST
be installed by a qualified electrician 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.
Drain Connection
and Location
Figure 7
CAUTION: THE ACCESSORY DRAIN PAN
(VPDP1) MUST BE INSTALLED BEFORE
INSTALLING THE UNIT.
1. The accessory drain pan has two (2)
provisions (left & right) for connecting an
external condensate drain.
2. A field supplied condensate drain system
must be connected to one of the two 3/4"
FPT connections.
3. The remaining connection must be plugged
using the 3/4" pipe plug (provided) and field
suppled teflon tape or pipe joint compound.
4. Failure to follow these procedures may
result in serious property damage.
5. This is the primary drain pan. A field supplied
secondary condensate pan may be applied.
Check with local codes.

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920-159-02 (10-04)
3) Electrical Data (continued)
L1 L2
QUICK DISCONNECT
HERM
BLUE
YELLOW
GREEN
WHITE
RED
CAPACITOR
BROWN
GREEN
BROWN
COMP WIRE HARNESS
COMPRESSOR
RED
BLUE
BLACK
RED
FAN
c
BLACK
BLUE
WHITE
TRANSFORMER
WHITE
BLACK
BLACK
COIL, SOLENOID
WIRE NUT (RED)
SEE NOTE #4
CAPACITOR
GREEN
MOTOR
CONDENSER
MOUNT
TO MOTOR
FAN
RED
BLACK
WHITE
HERM
c
BLACK
WHITE
BROWN
BLUE
YELLOW
GREEN
MOTOR
BLOWER
TO MOTOR
MOUNT
HEATER
WHITE
LOW AMBIENT
COMPR RELAY
CONTROL
WHITE
FAN
RELAY
BLACK
RELAY
REV VALVE
WHITE
2-REQ'D
DEFROST
INSULATOR
T-STAT
SWITCH
RED
YELLOW
WIRE NUT (RED)
7.5 KW & 10 KW
5 KW
2.5 KW & 3.4 KW
HEATER
BLACK
SEE NOTE #6
PRESSURE
WHITE
RELAY
HEAT
RELAY
HEAT
RELAY
HEAT
RELAY
HEAT
BLACK
BLACK
BLACK
BLACK
BLACK
BLACK
BLACK
BLACK
BLACK
RED
RED
RED
RED
RED
RED
RED
RED
(2.5KW/3.4KW
5 KW)
(2.5KW/3.4KW
5 KW)
(7.5KW/10KW) (7.5KW/10KW)
RED
BROWN
YELLOW
WHITE
RED
UP
(EAR)
THERMOSTAT CONNECTIONS
TERM BOARD
SHOWN BELOW
TRANSFORMER
FOR 208 VOLT MODELS ONLY
MOVE THE WHITE WIRE AS
RED BLACK
BLACK
WHITE
"F"
R
"F"
C"F"
S
COM. 240V
24V
1
2
3
4
1 3
2 4 4
31
2
L
CH
2 4
1 3
2 4
1 3 1
2
313
424
208V
Y
W
G
R
R
C
B
YWRGBC
COM.
24V
208V 240V
NOTE: THE DIAGRAM ABOVE ILLUSTRATES THE TYPICAL THERMOSTAT WIRING AND 208
VOLT TRANSFORMER WIRING. SEE THE UNIT CONTROL PANEL FOR THE ACTUAL
UNIT WIRING DIAGRAM AND SCHEMATIC.
RT2
THERMOSTAT
(FRONT)
Electrical & Thermostat Wiring Diagrams
Figure 8

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920-159-02 (10-04)
All Vert-I-Pak chassis are shipped with a 20" x 14"
filter installed. If an accessory filter holder is to be
used, you MUST remove the factory shipped filter
from the chassis. Do NOT use two filters
4) Indoor Return Air Grille Installation
There are three Indoor Return Air Grille options as shown in Figure 9. Choose the option that best suits your needs. Use the installation
instructions provided with accessories for installation details.
Return Air Grille Options
Figure 9
VPRG2
Return Air Grille
Unit requires a field-supplied
access door or panel and a
16" x 20" filter.
VPRG4
Return Air Grille with Access Panel
A field-supplied (25" x 20") filter is
mounted inside the hinged access door.
Option 1
Option 2
Notes:
A. These are the Friedrich recommended return air grille / filter / access panel arrangements. Consult the factory on other
arrangements. Improper return air arrangements will cause performance problems.
B. Return air arrangements are shown from the front, but can also be installed from the right or left side of the unit.