Friedrich Metal Products RT6 Installation Manual
®
VERT-I-PAK A-Series
Single Package Vertical Air Conditioning System
24,000 BTU/h
Installation and Operation Manual
NOTE: This manual only applies to 24,000 BT/u models.
For 9,000-18,000 BT/u models refer to manual 920-075-12.
920-159-07 (1-11)
Table of Contents
General Information
General Instructions ....................................................................................................................
Warnings .....................................................................................................................................
Your Safety and the Safety of Others.............
General Specifications
Model Number Identification Guide ...............................................................................................
Chassis Specifications ..................................................................................................................
Electrical Data.................................................................................................................
Electrical Requirements................................................................................................................................................... 3
Electrical Rating Tables....................................................................................................................................................3
Installation Recommendations ....................................................................................................................................4
Installation
Utility Closet Dimensions...................................................................................................... ........................................... 5
Wall Plenum & Architectural Louver Installation ................................................................................ .............................. 6
Drain Pan Installation .................................................................................................................................................... 10
Condensate Disposal System ....................................................................................................................................... 13
Indoor Return Air Grille Installation................................................................................................................................ 13
Ductwork ...........................................................................................................................
Chassis Installation ....................................................................................................................................................... 14
..............................................................................
.................................................2
.................................... 1
.................................... 1
.................................... 1
................................... 2
.................................. 2
............................................ 13
Remote Thermostat Operation
Remote Thermostat.............................................................................................................. ......................................... 15
Desk Control Terminals ...........................................................................................................
Thermostat Connections .......................................................................................................
Auxiliary Fan Control ..........................................................................................................
Electrical and Friedrich Thermostat Wiring Diagrams ..................................................................................................
Chassis Final Connection
Final Installation checklist................................................................................................... ........................................... 17
Chassis Operation
Fresh Air Door.................................................................................................................
Low Ambient Compressor Lock Out ......................................................................................
Room Freeze Protection .........................................................................................................
Emergency Heat Operation.......................................................................................................
Service
Servicing/Chassis Quick Changeouts ........................................................................................................................... 18
Routine Maintenance ............................................................................................................
Electronic Control Error Code Diagnostics and Test Mode .......................................................................................... 18
Error Codes .................................................................................................................................................................. 19
...................................... 15
........................................ 15
........................................... 15
16
.............................................. 17
........................................ 17
...................................... 17
..................................... 17
........................................ 18
Accessories.....................................................................................................................
Warranty ........................................................................................................................
...............................................
............................................... 21
20
Congratulations!
Thank you for your decision to purchase the Friedrich Vert-I-Pak Air Conditioner (VPAK). Your new Friedrich has been carefully
engineered and manufactured to give you many years of dependable, efficient operation, maintaining a comfortable
temperature and humidity level. Many extra features have been built into your unit to assure quiet operation, the greatest
circulation of cool, dry air, and the most economic operation.
General Instructions
This Installation and Operation Manual has been designed to ensure maximum satisfaction in the performance of your unit.
For years of trouble-free service, please follow the installation instructions closely. We cannot overemphasize the importance
of proper installation. We have added new information to the basic instructions to help you achieve success.
Here are some suggestions to help you use your
new Friedrich most efficiently:
1. Carefully read and follow the installation instructions.
2. Clean the filter frequently (See Routine Maintenance, page
18).
3. Do not block the air flow to and from the unit.
4. A dirty filter or improperly set controls can affect the cooling
ability and overall performance of the unit.
5. If cooling is weak and you have verified that the filter is
clean and the controls are properly set, the unit may need
service, and you should call your Friedrich service provider
to Check the unit.
6. Keep blinds, shades and drapes closed on the sunny side
of the room being cooled for optimum performance.
7. Proper insulation helps your unit maintain the desired inside
temperature.
Your safety and the safety of others are
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”.
WARNING
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 70-2008 National Electric
Code or current edition, International Mechanic Code
2009 or current edition and any other applicable local
or national codes.
Failure to do so can result in property damage,
personal injury or death.
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.
Failure to do so can result in property damage, personal
injury or death.
These words mean:
WARNING
Indicates a hazard which, if not followed, can result in
severe personal injury or death and damage to product
or other property.
CAUTION
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.
NOTICE
Indicates property damage can occur if instructions are
not followed.
1
Vert-I-Pak
HARD WIRED
HARD WIRED
VEA24K
VHA24K
230/208
230/208
SERIES
®
AEVREBMUNLEDOM
24
LTR43K
ENGINEERING CODE
OPTIONS
DESIGN SERIES
NOMINAL CAPACITY
VOLTAGE
Vert-I-Pak
®
ELECTRIC HEATER SIZE
25 = 2.5 KW
34 = 3.4 KW
50 = 5.0 KW
75 = 7.5 KW
100 = 10.0 KW
R-410A
23 1/8”
23 1/8”
47 1/4”
See chart, page 14
.4” water
Electrical Data
Heater Watts 2500/2050 3400/2780 5000/4090 7500/6135 10000/8180 2500/2050 3400/2780 5000/4090 7500/6135 10000/8180
Voltage
Heating BTU/h 8500/7000 11600/9500 17000/13900 25598/20939 34130/27918 8500/7000 11600/9500 17000/13900 25598/20939 34130/27918
Heating Current (Amps) 10.9/9.9 14.8/13.4 21.7/19.7 32.6/29.5 43.5/39.3 10.9/9.9 14.8/13.4 21.7/19.7 32.6/29.5 43.5/39.3
Minimum Circuit Am pacity 17.2/15.9 22.1/20.3 30.7/28.1 44.3/40.3 57
Branch Circuit Fuse (Amps ) 25 25 30 45 60 25 25 30 45 60
LRA - Compressor (Amps) 34.8 34.8 34.8 34.8 34.8 34.8 34.8 34.8 34.8 34.8
Cooling Current (Am ps) 10.0/10.4 10.0/10.4 10.0/10.4 10.0/10.4 10.0/10.4 10.6/10.9 10.6/10.9 10.6/10.9 10.6/10.9 10.6/10.9
Basic heater Size 2.5 Kw 3.4 Kw 5.0 Kw 7.5 Kw 10.0 Kw 2.5 Kw 3.4 Kw 5.0 Kw 7.5 Kw 10.0 Kw
Power Connection
Recom mended Branch
Circuit Wire Sizes* AWG -
American Wire Gauge
10 1 0 10 6 4 10 10 10 6 4
* Single circuit from main box. Based on copper wire 100' or less, single insulated conductor at 60 º C.
NOTE:
2
.9/52.7 17.2/15.9 22.1/20.3 30.7/28.1 44.3/40.3 57.9/52.7
Electrical Requirements
Wire Size
Use ONLY wire size recommended for
single outlet branch circuit.
Use ONLY type and size fuse or HACR
circuit breaker indicated on unit’s rating
plate (See sample below). Proper over
current protection to the units is the responsibility of the owner.
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.
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.
Electrical Data
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.
Electrical Rating Tables
NOTE: Use copper conductors ONLY. Wire sizes are per
NEC. Check local codes for overseas applications.
Recommended branch circuit wire sizes
Nameplate Maximum Circuit
Breaker Size
25A
30A
45A 6
60A
AWG --- American Wire Gauge
* Single circuit from main box.
** Based on 100’ or less of copper, single insulated con-
ductor at 60° C
AWG Wire Size
10
10
4
Sample Nameplate
S
AM
P
L
COOLING EQUIPMENT
FOLLOWING ITEMS
E
OUTDOOR GRILLE
120524
INDOOR GRILLE
WARNING
Electrical shock hazard.
Turn OFF electric power before service or
installation.
Unit must be properly grounded.
Unit must have correct fuse or circuit breaker
protection.
Unit’s supply circuit must have the correct
wire conductor size.
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.
3
Forproperunitperformance andmaximum operatingliferefer to the minimum installation clearances
below.
Figure 1
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 or 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.
6"
SMALL RECESS OK
60"
60"
60"
6"
60"
60"
6"
Figure 2
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 reject
device like a condensing unit, a
minimum distance of 72” should be
kept.
ing
60" 60"
LARGER RECESS OK. IF A> 5xB
OUTDOOR
CONDENSING
UNIT
B
A
BUILDING
12"
POLE
MAJOR OBSTRUCTION
60"60"
60"
60"
12"
24"60"
KAPVKAPVKAPV
24"
SHRUB
72"
FENCE
The above suggestions are for reference only and do not represent all posible installations. Please contact Friedrich 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.
4
Installation
Utility ClosetDimensions
Recommended utility closet dimensions and a typical indoor installation are illustrated in Figure 3. Three inches minimum clearance
on three sides of the unit must be allowed for return airflow, installation access and service access. See Figures 3 & 4 for clearances
and reference dimensions.
Figure 3
Typical Utility Closet
Field-supplied
Filter (25" x 20")
VPRG4 Access Panel &
Return Air Filter Grille
Vert-I-Pak Chassis 2-ton dimensions:
23 1/8" wide x 23 1/8" deep x 47 1/4" high.
58"
29"
Recommended field
installed drain pan
Optional Platform
3" Clearance on all
three sides minimum for
service and installation
Power
Disconnect
Chassis Shown in Closet, on Optional Platform
Rigid Ductwork
Exterior Wall
Flexible Ductwork
VPAWP1-8/1-14Wall Plenum
Plenum
VPDP1 drain pan beneath
Chassis is
shipped with
vibration
isolators
installed
unit is required on all
VEA/VHA24 units. Drain
pan must be installed prior
to chassis installation
See Figure 16, page 14 for proper chasis
installation.
NOTICE
Drain pan must be installed in closet prior to chassis
insertion into plenum. See Page 10 for drain pan installation details. Failure to do so can result in property
damage.
Figure 4
control box
Top View
electrical
entrance
5
Wall Plenum and Architectural Louver Installation
Install the wall plenum components in accordance with the installation instructions provided.
NOTE: 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.
YOUR WALL PLENUM WILL WORK ONLY IF INSTALLED CORRECTLY. TAKE NOTICE TO INSTALL IT IN THE
CORRECT ORIENTATION AS SHOWN IN THE ILLUSTRATIONS. ALWAYS FOLLOW LOCAL AND NATIONAL CODES
FOR PROPER INSTALLATION.
Figure 5
Included Parts
There are two parts to a Wall Plenum:
A) 1-Outside Assembly (Part A)
B) 1-Inside Assembly (Part B)
45° Drip
Ledge
Part A
Out-
side Plenum
Part B
Inside
Plenum
Figure 6
Field Supplied Parts:
Caulk, Attachment screws and Flashing
are fi eld supplied. Silicone caulk is
recommended.
VPAWP1-8 adjusts for walls 5.5 - 8.0" thick.
VPAWP1-14 adjusts for walls 8 - 14.0" thick.
Both installations are similar.
C
A
ULK
Caulk
Flashing
Shim
PART A CORRECT ORIENTATION:
!LOUVER ATTACHMENT
FLANGES TOWARD THE BUILDING OUTSIDE, 45°
DRIP LEDGE AT THE BOTTOM.
6
PART B CORRECT ORIENTATION:
!LARGE OPENING TO BOTTOM
3/4" FLANGE TOWARD THE INSIDE
OF THE BUILDING.
Header materials /
wall studs
1" –3" Screws to attach
the plenum assembly
to the wall studs
Figure 7
Measure and frame out the outside wall plenum opening
24000 BTU/h
The plenum cut out dimensions are 24 5/8"
wide x 30 7/8" high. The bottom of the rough in
opening must be 1 1/2" from the surface the unit
will sit on.
Measure your outside wall as shown in the illustration. Cut, frame, and square rough opening.
24
5
/
8
"
The Wall plenum has a 3/4" break all the way
around to cover the rough cut opening or
required shim.
If the installation will utilize an auxiliary drain
pan the drain pan must be a maximum of 1 ½”
11/2"
Floor to top
of frame
307/8"
tall. If the drain pan to be used is taller, the unit
must be raised within the auxiliary pan by the
difference in height of the drain pan and 1 ½”
IMPORTANT: THE WALL PLENUM IS NOT DESIGNED TO CARRY STRUCTURAL LOADS. A PROPER
HEADER OPENING MUST BE BUILT INTO THE ROUGH OPENING. THE PLENUM REQUIRES FLASHING,
SHIM AND CAULK FOR A WEATHER-RESISTANT INSTALLATION.
IT IS THE RESPONSIBILITY OF THE CONTRACTOR TO PROPERLY INSTALL THE PLENUM AND MEET
BUILDING CODE REQUIREMENTS.
Figure 8
Install Architectural Louver on the Outside Plenum
NOTE: The VPAL2 Architectural
Louver is best installed onto the
Outside Plenum (Part A) prior to
Wall Plenum installation. Louver
installation is easier at this point,
and it will help keep the Wall
Plenum square during installation.
LOUVER
OUTSIDE PLENUM
PART A
7
Figure 9
Plenum Installation
NOTE: Proper header and wall penetration must conform to all national and local building codes.
Caulk all 8 flange
corners and unused
holes
Proper
Flashing
Proper
Caulking
Architectural louver VPAL2
mounted on the outside
wall plenum (Part A)
Proper Header
Outside
Wall
Inside Wall Plenum (Part B)
Install anchor screws approximately four inches from the top and
bottom of the plenum. Do not
make penetration through the top
or bottom of the plenum
Proper Caulking
Proper Flashing
After the rough cut opening is prepared, you are ready to assemble the two wall plenum parts. Before
caulking and permanent attachment, dry fi t the outside plenum into the rough opening and check for fi t
and level. Caulk (silicone recommended ) the parts well and insert them into the wall as shown.
A) Apply caulk and insert Outside Part A into the hole.
B) Apply caulk and insert Inside Part B into Part A. Be sure that Part A does not back out of the wall hole.
8
Figure 10
Adjust the Divider
Adjustment
Loosen the two screws located on the top side of the divider.
Slide the top part of the divider toward the outside until the
sealing strip makes contact with the outdoor louver. Tighten
the divider screws to complete the adjustment.
NOTE:
Let the caulk cure completely before installing the
chassis. This completes the plenum installation.
Figure 11
Wall Plenum Preparations
IMPORTANT:
This step must be performed to ensure that the chassis installs and seals properly in
the wall plenum.
From the inside of the closet locate the top portion of the factory installed weatherseal gasket, See
Figure A. Cut the gasket in the upper left and right hand corners of the plenum. Carefully remove the
entire top piece of gasket.
When completed, the wall plenum installation for the 24000 Btu/h unit should look like Fi gure B. Figure
B is shown with the VPDP1 drain pan installed. The drain pan is required for all 24000 units.
Figure A
Cut here
Figure B
9
Drain Pan Installation
NOTE: 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 ¾” FPT connections.
3. The remaining connection must be plugged using the ¾” pipe plug (provided) and field supplied 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 is recommended and may be required.
Check with your local and national codes.
Figure 12
STEP 1: CUT OPENING IN
GASKET
Remove an 8" portion of the weather seal
gasket from the bottom left surface of the
plenum.
To remove: Cut the gasket in the lower left
corner of the plenum. Then make a
second cut 8" from the left corner. The
gasket should peel away from the plenum
leaving a clean mounting surface (See
detail A).
STEP 2: SEAL AND SET
PAN
Prior to placing the drain pan into the
opening run a 1/4" bead of sealant the
entire width of the removed gasket.
The secondary overflow lip must
extend into the plenum to prevent
water leaks. The pan should be mounted against the 3/4" flange of the
plenum (See detail B).
A
8.00
DETAIL A
DETAIL B
2.00
Sealant
10
B
Figure 13
STEP 3: INSTALL DRAIN PAN
Attach the d rain pan to the cl oset floor with
the appropriate field supplied hardware.
IM P OR TANT: To prevent water leaks u se only
the factory supplied moun ting holes. N EVER
make penetrations in the drain pan i tself.
STEP 4: INSTALL DRAIN
PLUG
The drain pan comes with both left and
right-hand drain connections locations.
Determine which of the two
connections will be used to drain the
condensate. Then, with the factory
supplied drain plug, pl ug the unus ed
opening.
NOTE: Proper sealant must be app lied
to the connection to prevent lea ks.
11
Figure 14
STEP 5: INSTALL DRAIN LINE
Condensate line routing options are shown below. Choose the one that best suits your installation. Never run the
condensate line as shown in Option 4 below, as the drain line will come into contact with the factory-installed
isolators beneath the unit.
Option 1
Run condensate line
to right of unit
Option 2
Run condensate line
beneath unit platform
Option 3
Run condensate line
to left of unit
IMPORTANT: The drain pan and line must be kept free from debris. Prior to installing the chassis ensure that there are
no blockages in the drain pan or line.
12
Option 4
Do not run
condensate line
back toward unit
Condensate Disposal System
The Condensate Disposal System increases energy
efficiency utilizing a factory installed fan that slings the cold
condensate onto the hot outdoor coil.
When high outdoor humidity prevents the slinger from
disposing of all the condensate, the excess condensate
overflow into the condensate drain pan and out of the 3/4”
internal drain connection.
NOTE: If the Condensate Disposal System fails to remove
all of the condensate from unit, any excess condensate will
overflow from a spillway in the rear of the unit directly into
the wall plenum, and drain outside the building, This is your
indication that the chassis or drain requires servicing.
WARNING
Moving parts hazard
Turn off electric power before servicing
this component.
Fan can start automatically.
Failure to do so can result in property
damage, personal Injury and/or death.
Indoor Return Air Grille Installation
There are two indoor Return Air Grille operations as shown
in Figure 15. Choose the option that best suits your needs.
Use the installation instructions provided with accessories
for installation details.
Figure 15
Return Air Grille Options
NOTE: 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.
Option 1
VPRG4 Return Air Grille
with Access Panel
A field-supplied (25” x 20”) filter is
mounted inside the hinged access
door.
Kit contains hinge bracket for
mounting the door with the return
air opening high or low on the door
for optimal sound attenuation.
For 24,000 /Btus models, it is
recommended to install the hinge
on the left side with the return air
openings low on the door.
Option 2
Field Supplied
Return Grille
Must have a minimum of 250
square inches of free area.
NOTES:
These are the Friedrich recommended return air
grille filter/access panel arrangements. Consult
Friedrich Air Conditioning on other arrangements.
Improper return air arrangements will cause performance problems.
Return air arrangements are shown from the front,
but can also be installed from the right or left side of
the unit.
Ductwork
The supply duct system should be designed via a recognized method such as the equal friction method, or velocity
reduction method, using the appropriate duct calculator(s)
for the type(s) of duct (i.e. metal duct, duct board, or flex
duct) being used in the system. The duct system should be
designed for a maximum friction rate of .40" water column
taking into consideration all fittings, registers and/or
diffusers. DO NOT operate unit without a supply duct
attached.
The return air to Vert-I-Pak "A" series units MUST NOT be
ducted, and all units MUST have a free return air configuration to perform properly.
Indoor Air Flow Data
Indoor air flow may be determined by measuring the external static pressure (ESP) of the duct system using an
inclined manometer or magnehelic gauge, then consulting
chart “A” to determine actual air flow. Rated air flow for
each unit is obtained at .10” water column when operating
with a clean filter and a dry coil (i.e. heating) on the indicated speed at 230 Volts. Use the air flow correction multipliers contained in chart “B” to determine accurate air flow
under the listed conditions. Under no circumstances should
the Vert-I-Pak equipment be operated at an external static
pressure in excess of .40” water column. Operation of the
Vert-I-Pak under these conditions will result in inadequate
air flow leading to poor performance and/or premature
component failure.
For LOW speed operation, connect the fan output terminal
from the thermostat to the GL terminal of the electronic
control. For HIGH speed operation, connect the fan output
terminal from the thermostat to the GH terminal of the
electronic control. For thermostats with two-speed fan
capabilities, connect the LOW speed output to the GL
terminal, and the HIGH speed output to the GH terminal.
(See Figure 18, page 16)
13
Model
VEA24/VHA24
ESP (") Low High
.00" 690 740
.10" 610 700
.20" 560 640
.30" 510 580
.40" 450 520
Highlighted values indicate
rated performance point.
For single speed thermostats connect to the GL
terminal for Low speed or
GH terminal for High
speed. Two speed control
thermostats will use both.
Chassis Installation
NOTE: Prior to installing the chassis, ensure that the drain
pan and line are free from debris.
A. Ensure that the wall plenum is installed in accordance
with the VPAWP1-8/1-14 Installation Manual.
B. Ensure that the VPDP1 drain pan is installed correctly
(see Figure 16). Using the 3/4" plugs supplied with the
pan, plug the unused condensate drain hole. Connect a
drain to the condensate exit location. Be sure to use
teflon tape or approved pipe sealant on all drain
connections and plugs (see Figure 16).
C. Place the chassis into the closet with the outdoor side
facing the wall plenum opening.
D. Slide the chassis into the wall plenum until the plenum
divider seal is established and the factory-installed
chassis to plenum gasket has sealed to the top flange of
the plenum. (See Figure 16)
CAUTION
Excessive Weight Hazard
Use two or more people when
installing your air conditioner.
Failure to do so can result in back
or other injury.
CAUTION
Cut/Sever Hazard
Some edges may be sharp, use
gloves or other hand protection
when handling unit.
Failure to do so can result in minor
to moderate personal injury.
Figure 16
Chassis Installation /Installed View
23/
8
The V
ert-I-Pak chassis must be inserted into the wall plenum so that the plenum divider gasket makes contact with the condenser
baffle in the unit.The chassis will fit approximately 2 3/8” into the wall plenum.
NOTE: Prior to installing the chassis, ensure that the drain pan and line are free from debris.
Chassis to
plenum gasket
14
Remote Thermostat and Low Voltage Control Connections
Remote Thermostat
All Friedrich Vert-I-Pak units are factory configured to be controlled by using a single stage heat/cool remote wall mounted
thermostat.
The thermostat may be auto or manual changeover as long as the
control configuration matches that of the Vert-I-Pak unit.
To connect the wall-mounted thermostat:
1) Pull the disconnect switch.
2) Unscrew and remove the control box panel.
3) After selecting which side you want to run your thermostat
wire through, run the wires through the side hole in the box
to reach the connection terminal for the wiring.
4) Make the wire connections, appropriately matching the
wires as shown in the wiring diagram.
5) Once each wire is matched and connected, the unit is now
ready for operation.
6) Reattach the control box cover.
Desk Control Terminals
The Friedrich VERT-I-PAK has built-in provisions for connection to
an external switch to control power to the unit.
The switch can be a central desk control system or even a
normally open door switch.
Other manufacturer’s units and even older Friedrich models
may have different control wiring connections. Questions
concerning proper connections to the unit should be directed to
the factory.
Control Board
Figure 17
WARNING
Electrical shock hazard.
Improper connection of the thermostat
control wiring and/or tampering with the
unit's internal wiring can void the
equipment warranty and can result in
property damage, personal injury and/or
death.
For desk control operation, connect one side of the switch to the
D1 terminal and the other to the D2 terminal (See figure 17).
Whenever the switch closes, the unit operation will stop.
NOTE: The desk control system and switches must be field
supplied.
Maximum Wire Length for Desk Control Switch
Wire Size Maximum Length
#24 400 ft.
#22 600 ft.
#20 900 ft.
#18 1500 ft.
#16 2000 ft.
Thermostat Connections
R = 24V Power from Unit
Y = Call for Cooling
W = Call for Heating
B = Reversing Valve Energized in heating mode
GL = Call for Fan (Low Speed)
GH = Call for Fan (High Speed)
C = Common Ground
15
Figure 18
RT5 Electrical & Thermostat Wiring Diagrams
RT6
THERMOSTAT
(FRONT)
F2
00
F1
D2
D1
AMBIENT
AIR SENSOR
C
GH
C
RH
RC
PART NO. REV
W
GL
B
W
Y
R
SERVICE DISPLAY
VHA 24K
7.5KW, 10.0KW
WIRING DIAGRAM HEAT PUMP EH
" F "
R
C
S
HARNESS COMPRESSOR
COMPRESSOR
NUT
WASHER
TEMINAL COVER
TERMINAL DETAIL
GASKET
MOUNT
TO MOTOR
GREEN
MOTOR
BLOWER
WHITE
BROWN
M
R
E
H
C
WHITE
RED
BLUE
C
CAPACITOR
N
A
F
BROWN
WHITE
FAN MOTOR
GREEN
MOUNT
WHITE
TO MOTOR
CAPACITOR
M
R
E
H
N
A
F
SET VOLTAGE TO 220V
VOLTAGE SELECTION SWITCH
5.0 KW
HEATER
2.5 KW & 3.5 KW
BLACK
BLUE
BROWN
COIL SOLENOID
L2
L1
QUICK DISCONNECT
BLACK
CONTACTOR
COMPRESSOR
BLACK
BLACK
D
RED
BLACK
BLACK
BLACK (TO L1)
WHITE
R
E
B
O Y
THERMOSTAT CONNECTIONS
GL
GH
SWITCH
PRESSURE
RED
BROWN
LEGEND
5-Two Speeds Fan T-STAT-Field Provided
B Reversing valve Energized in heating mode
R 24VAC Power From Unit
Y Call for Cooling
W Call for Heating
LUE
B
BLUE
RV
RELAY
FAN 4
RELAY
FAN 3
RELAY
FAN 2
RELAY
RELAY
FAN 1
HEAT
RELAY
HEAT
RELAY
COMP
RELAY
VOLTAGE SWITCH
Field Wiring
RT
GL Call for Low Fan
GH Call for High Fan
OUTDOOR COIL SENSOR
INDOOR COIL SENSOR
ELECTRONIC CONTROL
L2 or ACN
L1
WHITE 520 (TO L2)
NOTE: THE DIAGRAM ABOVE, ILLUSTRATES THE TYPICAL THERMOSTAT WIRING FOR TWO SPEED
FAN OPERATION. SEE THE UNIT CONTROL PANEL FOR THE ACTUAL UNIT WIRING DIAGRAM
AND SCHEMATIC.
16
Chassis Final Connections
With the chassis in place, you are now ready to begin chassis
connections:
A. Move the thermostat switches to "OFF" and "AUTO". This
will keep the thermostat from cycling the chassis until final
connections are complete.
B. Connect the duct work onto the 10" collar. Plastic wire ties
(field supplied) are suggested to secure the duct work in
place. Use 2 wire ties, one for each inner and outer flex
duct sleeve.
C. Review the Final Installation Checklist before replacing
the power quick disconnect, reconnecting power to the
chassis, or operating the chassis.
Present the owner or operator of the equipment with the
Installation & Operation Manual, all accessory installation
instructions, and the name, address and telephone number
of the Authorized Friedrich Warranty Service Company in
the area for future reference if necessary.
Chassis Operation
Fresh Air Door
The Fresh Air Door is an “intake” system. The fresh air door
is opened via a slide on the front of the chassis located just
above the indoor coil. Move the slide left to open and right
to close the fresh air door. The system is capable of up to
80 CFM of fresh air @
~.3” H20 Internal static pressure.
WARNING
Electrical shock hazard.
Pull out electrical disconnect on front of
the chassis and turn off all power to the
unit before servicing.
Failure to do so can result in property
damage, personal injury and/or death.
Final Inspection & Start-up Checklist
Inspect and ensure that all components and
accessories have been installed properly and that they
have not been damaged during the installation
process.
Ensure that all installation instructions concerning
clearances around the unit have been adhered to.
Check to ensure that the unit air filter, indoor coil, and
outdoor coil are free from any obstructions.
Ensure that the circuit breaker(s) or fuse(s) and supply
circuit wire size have been sized correctly.
Low Ambient Compressor Cut Out
Each chassis is equipped with low ambient protection in the
form of a thermistor, wich will prevent compressor
operation at low suction temperature.
RoomFreezeProtection
This feature will monitor the indoor room conditions and in
the event that the room falls below 40º F the unit will cycle
on high fan with the electric heater. This occurs regardless
of mode.
Check the condensate water drain(s) to ensure that
they are adequate for the removal of condensate
water, and that they meet approval of the end user.
Ensure that the entire installation is in compliance with
all applicable national and local codes and ordinances
having jurisdiction.
Secure all access panels (i.e. front cover and/or control
box), apply power to the unit, then start the unit, and
check for proper operation in each mode. Instruct the
owner or operator regarding the unit’s operation, and
the recommended routine maintenance schedule.
NOTE: Maintaining a log for recording the dates of
maintenance and/or service is recommended, and should
be suggested to the owner or operator of the equipment.
17
Service & Warranty
Servicing / ChassisQuick Changeouts
.
To Remove the Chassis from the Closet:
A. Switch the wall Thermostat off.
B. Pull the Power Disconnect located in the front of the chassis.
C. Disconnect the power coming into the unit from the main
breaker panel or the closet mounted disconnect.
D. Disconnect the electrical connection.
E. Disconnect the duct work.
F. Slide the chassis out of the wall plenum.
G. Lift the chassis out of the utility closet.
WARNING
Electrical shock hazard.
Pull out electrical disconnect on front of
the chassis and turn off all power to unit
before servicing.
Failure to do so can result in property
damage, personal injury and/or death.
Routine Maintenance
Performing Routine Maintenance
With the proper maintenance and care, your system will
operate economically and dependably. Maintenance can be
accomplished easily by referring to the following directions.
However, before performing any maintenance, see above
stated WARNING.
CAUTION
Cut/Sever Hazard
Some edges may be sharp, use gloves
or other hand protection when handling
unit.
Failure to do so can result in minor to
moderate personal injury.
Replace Air Filter
Inspect and Clean Indoor-air Coil
supply depots.
Inspect Outdoor-Air (OA)Intake andExhaust
and could damage it.
Inspect and Clean Condensate Drain
Warranty
All warranty service work must be done by an authorized
servicer. See Product Warranty, and consult your dealer
or contractor for details.
Electronic Control Error Code
Diagnostic and Test Mode
Error Code Diagnostics
Lint and dirt
on the indoor-air coil can damage your unit.
NOTE: Do not operate your system without a filter in
place or block the front of the unit return air opening.
18
The VPAK electronic control continuously monitors the
Vert-I-Pak unit operation and will store error codes if certain
conditions are witnessed. In some cases the unit may
takeaction and shut the unit off until conditions are corrected.
To access the error code menu press the 'ENTER' button
If error
exist you can toggle between error codes using the 'SCROLL
button. To clear all codes press the 'ENTER' and 'SCROLL'
buttons
To exit without losing codes press the
codes are present they will be displayed. If multiple codes
for three seconds while in the error code mode.
'LOW FAN'
button.
'
Error Codes and Alarm Status
Action
Unit defaults to 75°F in COOLING or 68°F in HEATING and will continue to operate.
the outdoor temperature allows.
The unit will continue to operate and be monitored.
temp reaches 46°F. The unit will display "FRZ" during operation. Logged Only
use electric heat to satisfy the heating demand.
the unit will return to normal operation.
Outdoor Coil Temperature < 30 F for 2 consecutive Minutes
exceeds 45°F. Applicable for Heat Pump models only.
24 Not Applicable Not Applicable
Unit Control Panel
The display shown below has four digits. The left two digits indicate the error code ( 1 to 24 ), The On/Off icons above these
two digits indicate the currents state of the error code. The right two digits show the history count (up to 99) of the associated
error code. The display contains a maintenance icon (wrench) that will illuminate to indicate when the unit needs maintenance.
Check Error Codes
1. Press the Enter key to activate the display.
2. Each press of the scroll key display the next error code.
Clear History Counters
1. Press & hold the Enter key and the Scroll Key for ~ 6 seconds
Error
Code Problem
1 Front Panel Button Stuck For More Than 20 Seconds Continue to monitor for "OPEN" (Unstuck) switch. Do not process switch input.
2 Input Voltage Out of Specification (103 - 127 / 187 - 253) Unit stops, open all relays until voltage is back within specs then resume operation.
3 Indoor Temperature Sensor is Open or Shorted
The unit's control board defaults 40°F. It will override the sensor and the unit will
4 Indoor Coil Temperature Sensor is Open or Shorted
5 Outdoor Coil Temperature Sensor is Open or Shorted
6 Outdoor Coil > (grater than) 175 F
7 Indoor Coil < (less than) 30 F for 2 consecutive minutes
8 Unit Cycles > (greater than) 9 Times per hour
9 Unit Cycles < (less than) 3 Times per Hour The unit will continue to operate and be monitored.
continue to operate.
The unit defaults to 20°F, overriding the sensor. The unit will continue to operate.
Using Elec Heat if available for HEATING. If not available, it will use HEAT PUMP if
The unit will shut down for 5 minutes. resume operation for 3 minutes. If test fails 3
times, the severity is increased and the unit operation is locked out.
The compressor will turn off and the High Fan speed will run. When coil temp reachs
45°F the unit will resume operation after lockout time.
10 Room Freeze Protection
11 WallStat Problem or Connection Issue The unit will not operate.
12 Not Applicable Not Applicable
13 High Pressure Limit Switch is Open
14 Not Applicable Not Applicable
15 Heat Pump Error
16 Temperature Beyond Operating Limits
17 Equipment Doesn't Meet Minimum Configuration The compressor must be enabled and have at least 2 fan speeds
18 Not Applicable Not Applicable
19 Not Applicable Not Applicable
20 Not Applicable Not Applicable
21 Not Applicable Not Applicable
22
23 Frost Protection
Only use if Electric Heat is available. Run High Speed and Electric Heat until room
If unit is cooling or heat pump is on, shut down compressor. Run high fan until
switch closes, then resume operation. The third occurance in 1 hour locks unit out.
Applicable to 24K unit only.
If indoor coil temperature is less than ambient temperature for 3 minutes the unit will
Occurs if the ambient temperature range falls below 0°F or greater than 130°F. The
error code will remain on until the temperature reaches the operating range and then
Unit will use electric heat to satisfy heating demands until the temperature equals or
Unit will run active defrost for a minimum of 6 minutes when Heat Pump run time is
greater than 60 minutes and outdoor coil temperature is 26 F or less.
19
Accessories
VPAWP1-8
VPAWP1-14
VPAL2
VPSC2
RT4
WALL PLENUM Two-part sleeve that telescopes in and out
from 5 to 8 in depth. The wall plenum sits inside the
1
2
exterior wall penetration.
DIMENSIONS: 30 high x 24 wide
3
8
CUTOUT DIMENSIONS: 30 high x 24 wide.
1
8
7
8
5
8
Same as VPAWP1-8, but telescopes 8 to 14 as required.
ARCHITECTURAL LOUVER Extruded aluminum louver
that attaches to the outdoor section of the wall plenum.
DIMENSIONS: 31 high x 25 wide.
1
16
9
16
Same as VPAL2 but can be ordered in a special color to
match the exterior wall.
DIGITAL REMOTE WALL THERMOSTAT Single stage
thermostat, used on VERT-I-PAK units. Hard wired with
single speed fan. Direct replacement for RT2.
OTOHP NOITPIRCSED LEDOM
RT5
RT6
VPRG4
DIGITAL REMOTE WALL THERMOSTAT Single stage
thermostat. Features high/low fan speed switch. Thermostat
is hard wired and can be battery powered or unit powered.
Features backlit display and multiple configured modes.
DIGITAL REMOTE WALL THERMOSTAT Single stage
cool, single stage heat thermostat. Features high/low fan
speed switch. Thermostat is hard wired and can be battery
powered or unit powered. Features backlight display and
multiple configuration.
ACCESS PANEL / RETURN AIR GRILLE - Serves as an
access panel to chassis and interior return air grille. A
field-supplied (25” x 20”)
filter is mounted inside the hinged
access door.
Kit contains hinge bracket for mounting the door with the return
air openings high or low on the door for optimal sound
attenuation.
For 9,000 / 12,000 / 18,000 Btu models, it is recommended to
install the door with the hinge on the right side and the return air
openings high on the door. For 24,000 Btu models, it is
recommended to install the hinge on the left side with the return
air openings low on the door.
DIMENSIONS: 58" high x 29" wide.
3
CUTOUT DIMENSIONS: 55
" high x 27" wide.
/
4
20
VPDP1
DRAIN PAN Drain pan may be installed prior to chassis for
easy installation/removal.
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