Friedrich VEB42, Vert-I-Pak VEB42, Vert-I-Pak VHB42, Vert-I-Pak VEB48, Vert-I-Pak VHB48 Installation Instructions Manual

VEB42, VHB42, VEB48, VHB48

FRIEDRICH AIR CONDITIONING CO.

P.O. BOX 1540 • San Antonio, TX 78295

Ph: 210-357-4400 • FAX: [phone]

www.friedrich.com

SELF-CONTAINED INDOOR AIR CONDITIONER / HEAT PUMP

NOTE: Read the entire instruction manual before starting the installation.

SAFETY CONSIDERATIONS

Improper installation, adjustment, alteration, service, maintenance, or use
can cause explosion, fire, electrical shock, or other conditions which may
cause personal injury or property damage. Consult a qualified installer,
service agency, or your distributor or dealer for information and assistance.
The qualified installer or agency must use factory-authorized parts or
accessories when modifying this product. Refer to the individual instructions
packaged with the parts or accessories when installing.

INSTALLATION

INSTRUCTIONS

Date: July 2000
Part No: 84016326 (IM010-01)

Follow all safety codes. Wear safety glasses and work gloves. Read these
instructions thoroughly and follow all warnings or cautions attached to the
unit. Consult local building codes, the National Electric Code (NEC), and
the Installation Standards, Warm Air Heating and Air Conditioning Systems
ANSI/NFPA 90B for special installation requirements.

Recognize safety information. This is the safety-alert symbol. When
you see this symbol on the unit or in instructions and manuals, be alert to
the potential for personal injury.

Understand the signal words DANGER, WARNING, and CAUTION. These
words are used with the safety-alert symbol. DANGER identifies the most
serious hazards which will result in severe personal injury or death.

WARNING signifies hazards which could result in personal injury or death.
CAUTION is used to identify unsafe practices which would result in minor

personal injury or product and property damage. NOTE is used to convey
special or supplemental information or to repeat and emphasize information
previously provided.

Table 1 - Unit Sizes And Available Electric Heat

UNIT COOLING HEATING AVAILABLE
SIZE BTUH BTUH AT 47ºF KW

V(E,H)B42 42,000 41,000 10 or 15

V(E,H)B48 48,000 47,000 15 or 20

Figure 1 — B-Series VERT-I-PAK

DANGER: Before installing or servicing system, always turn off main

power to system. There may be more than one (1) disconnect switch. Turn
off auxiliary heater power if applicable. Electrical shock can cause personal
injury or death.

INTRODUCTION

The VERT-I-PAK is ETL and c-ETL listed and is available in the cooling/
electric heating sizes shown in Table 1. The VERT-I-PAK units are
approved for upflow installations. They are designed to be installed in
closets.

The VERT-I-PAK is a self-contained unit. All components including outdoor
coil, compressor, and refrigerant tubing are located in a single package.
The units are already piped, charged, and wired. Refer to Figure 2 for basic
unit dimensions.

1

Figure 2 — V(E,H)B-Series Unit Dimensions (Inches)

2

INSTALLATION

The VERT-I-PAK was designed for installation in residential and light
commercial applications. These instructions detail a typical method of
installation. Figure 3 shows the typical component location and airflow
paths through the unit.

The VERT-I-PAK B-Series units are available in three return air configurations:
front "free-return" with filter frame; front ducted return

Figure 3 – Component Location and Air Flow Paths

Indoor Air Exhaust

Optional Return Air

with 1" duct flange; and left side ducted return with 1" duct flange. See
Figures 4, 5 & 6.

NOTE: Ducted return air configurations require field fabrication of a duct
mounted filter box. Filters are not supplied with units configured for ducted
return.

Indoor Coil

Auxillary Electric Heat

Indoor Blower

Return Air

To remove
filter, slide it to
the right side of
the unit as
shown

Filter Rails

Air Filter

Control Box

Compressor

Reversing Valve

Outdoor Air Exhaust

Outdoor Air Intake

Outdoor Blower

Expansion Valve

Condenser Coil

(Heat Pump)

Condensate Drain

Air Filter

Figure 4 — Front Free Return Figure 6 — Side Ducted

Figure 5 — Front Ducted Return

Return

3

I. GENERAL RECOMMENDATIONS (DO'S AND DO NOT'S)

• DO read the instructions completely before installation.

• DO take time to perform a quality installation.

• DO NOT obstruct or restrict indoor or outdoor air paths.

• When using flex duct: DO install properly. DO NOT crush or make
sharp bends in flex duct, use only gradual bends.

• DO tape and seal all duct joints.

• DO check the indoor conditioned air duct system static pressure
losses. It should not exceed those listed in Table 2. Consult your
dealer or distributor for more information.

• When designing indoor supply systems, DO NOT reduce air intakes
or discharge sizes.

• DO insulate ALL conditioned air duct system components.

• DO NOT locate room thermostat near conditioned air diffusers.

• DO locate thermostat on an interior wall.

• DO check that condensate drain line drains freely.

• DO NOT let debris fall and collect in indoor or outdoor blowers.

• DO NOT drill into unit (except for 1 in. flanges for ducted return units).
This could cause a refrigerant leak.

• DO handle unit with care.

• DO provide minimum installation and service clearances.

• DO follow all guidelines for indoor and outdoor air system.

• DO NOT substitute any components without checking with your dealer
or distributor. If you do substitute, get approval in writing. Substitutions
without approval void unit warranty.

• DO NOT guess, consult your dealer or distributor if any portion of the
installation procedure is unclear.

OUTDOOR AIR

EXHAUST

28"

40"

OUTDOOR AIR

INTAKE

INDOOR AIR

40"

REQUIRED

SERVICE

CLEARANCE

SUPPLY

Figure 7 — Recommended Service Clearance

V. INDOOR AND OUTDOOR AIR REQUIREMENTS

The indoor and outdoor air systems are designed to operate at specified
airflow rates and external static pressures. The supply and return air duct
system pressure losses (including filter, louver/grille and registers) must not
exceed the listed external static pressures for either the indoor or outdoor
air systems.
CAUTION: Failure to adhere to indoor air and outdoor air requirements as
listed in the following sections will void unit warranty.

II. UNPACK AND INSPECT UNIT

Remove shipping protection and pallet from unit and inspect for damage.
Be sure to check for concealed internal shipping damage. Do not install a
damaged unit.

III. SUPPLIES NEEDED FOR INSTALLATION

The following items are required to install unit.

• Adhesive duct tape, UL 181 aluminum or equivalent.
CAUTION: Incorrect type of duct tape may be a fire hazard. A failure

to follow this warning could result in a fire or explosion, and personal injury
or death.

• 8-conductor thermostat cable (20 gage wire minimum).
CAUTION: Do not use thermostat wire with less than the recommended

number of conductors.

• Supplies to connect indoor air (conditioned air supply) duct to unit.

• Supplies to connect power to unit.

• Supplies to connect outdoor-air duct to unit.

• Supplies to connect condensate drain line.

• Supplies to connect low-voltage thermostat to unit.

IV. SERVICE CLEARANCE AND UNIT LOCATION

For serviceability and to minimize transmitted noise and vibration, unit
should be installed with at least 1 inch clearance from walls. (See
Figure 7)
A minimum of 30 in. service clearance must be allowed in front of the unit.
All serviceable components are accessible from the front of the unit with the
front panels removed. The condensate drain fitting is located in the front
right hand corner post.

A. Indoor-Air (Conditioned Supply Air) System

The unit may be applied in either a free return air configuration or a ducted
return air configuration. The supply air path is intended to be ducted. The
design and construction of the indoor-air system must provide adequate air
distribution to ensure comfort levels throughout the structure.

The combined pressure losses of the return and supply air paths must not
exceed the external static capabilities of the system at the design airflow
(See Table 2).

If the unit is installed in a closet behind a door and the return air louver or
grille is directly opposite the unit RA opening, 2-in. clearance is required
between the front of the unit and the back side of the louver or grille. If the
louver or grille is located elsewhere on the door so it is not directly in front
of the RA opening, a minimum of 7-in. clearance is required between the
front of the unit and the back side of the door. The minimum "net free open
area" required for the RA louver or grille is listed in Table 2.

Table 2 — Indoor Air System Data

UNIT SIZE

Airflow

(CFM)

ESP

(in WG)

RA Grille

Minimum Net

Free Open Area

(Sq. In.)

42

48

1,400

1,400

0.50

0.50

525

525

4

B. Outdoor Air System

As a completely self-contained system, the Vert-I-Pak requires an adequate
supply of outdoor air to exchange heat from the outdoor air coil. The outdoor
air intake and discharge openings are located on the back side of the unit.
The unit may be installed where the outdoor air path runs through the wall
of the building directly behind the unit or where the outdoor air intake and
discharge paths are ducted separately away from the unit. Figure 8 shows
two typical ducted OA designs.

CAUTION: To ensure proper operation, the outdoor air intake and
discharge air paths must be free and unobstructed. The two air paths must
be situated to ensure that the intake and discharge air do not recirculate
(also called short-circuit).

For ducted outside air applications, the combined pressure losses of the
intake and discharge air paths must not exceed the external static capabilities
of the system at the design airflow (See Table 3).

VI. LINE VOLTAGE ELECTRICAL WIRING

DANGER: Electrical shock hazard. Turn OFF electric power at the

fuse box or service panel before making any electrical connections and
ensure a proper ground connection is made before connecting line voltage.
Failure to do so can result in property damage, personal injury and/or death.

A. Grounding

CAUTION: The unit must be electrically wired and grounded in

accordance with all state and local codes, national electric code, and NFPA

70. Unit and controls will NOT operate unless properly grounded. A ground
lug is provided for ground connection. Use only approved copper wire and
connectors from unit to service panel.

B. Power Supply

NOTE: Line voltage circuit is completely factory wired. Make all line
voltage connections inside circuit breaker junction box.

For through-the-wall applications, a wall sleeve and louver kit is available.
Follow the installation instructions provided with the kit.

Table 3 — Outdoor Air System Data

UNIT SIZE

42

48

Airflow

(CFM)

1,800

1,800

ESP

(in WG)

0.25

0.25

Figure 8 — Typical Configurations for Ducted Outside Air Applications

INTAKE

EXHAUST

The circuit breakers or fuses used for branch circuit protection should be UL
recognized. If circuit breakers are used, the circuit breaker for the
compressor circuit must have a UL HACR rating. If fuses are used, the fuse
for the compressor circuit MUST be time delay type.

CAUTION: Units are dual voltage rated 208-230/1/60. The 24V

control transformer must be connected for either 208V or 240V power
source for proper operation. Line voltage must not exceed 253V or go
below 197V. The transformer connection must be changed for 208V
operation.

Depending on auxiliary heater size, unit must be supplied with 2 or 3
separate 208V or 240V circuits from structure’s fuse box or service panel.
Each circuit is internally connected to a circuit breaker located in the unit
control box located at the front center of the unit. Refer to Table 4 and Table
5 for required circuits and recommended wire size for each circuit.

EXHAUST

OUTDOOR AIR
INTAKE

OUTSIDE
WALL

FLOOR

CEILING

OUTSIDE
WALL

OUTDOOR AIR
EXHAUST

5

OUTDOOR
AIR
INTAKE

FLOOR

BACK

OF UNIT

CEILING

OUTSIDE
WALL

OUTDOOR AIR
EXHAUST

INTAKE

Romex
Wiring
Bushings

C. Electrical Connections

Ground lug and line voltage connection terminals are located behind the
circuit breaker panel of the control box. See Figure 9. Complete the ground
wire connection. After completing ground wire connection, complete line
voltage connections. See Figure 10.

WARNING: Failure to adhere to minimum wire sizes, maximum over-

current protection, disconnect, and grounding requirements can cause
personal injury, electric shock, or a fire hazard. All wiring MUST comply with
requirements of state and local codes and ordinances and the national
electric code.

Control
Box

Figure 9 — Gaining Access to Wiring Compartment

Unit

Size

42

48

Compressor

Amps

20.4

26.4

Outdoor Fan

Amps

4.5

4.5

Auxillary

Heater #1

(Field Wiring)

Ground

(Field Wiring)

Figure 10 — Line Voltage And Ground Connections

Note: Figure 10 reflects a typical 3 ton 15KW unit. Actual layout
is based on unit size and auxiliary heater size.

Table 4 — Heat Pump Electrical Data

Compressor

Indoor Fan

Amps

3.0

3.0

Circuit

Ampacity

33.0

40.5

Ground Lug

Minimum

Wire

Size

Heat Pump

(Field Wiring)

1

8

6

Auxillary
Heater #2

(Field Wiring)

Max. Wire

Length

(Ft.2)

60

100

Heat Pump

Auxillary

Heater #1

Auxillary

Heater #2

Max. Fuse

or Breaker

Size Amps

50

60

3

Table 5 — Auxiliary Electric Heat Electrical Data

Ckt. #1

Electric

Heater

(KW)

Unit

Size

Ckt.# 1

Amps

Ckt. #1

Ampacity

Ckt. #1

Wire

Size

Max

Fuse

Size

Amps

10

15

20

1

If wire is applied at ambient greater than 30°C (86°F), consult Table 310-16 of the NEC (ANSI/NFPA 70). The ampacity of nonmetalic-sheathed

42

42, 48

48

41.6

20.8

41.6

52.0

26.0

52.0

10

6

60

30

6

60

3

Ckt. #1

Max

Wire

Length

(Ft)

100

100

100

2

Ckt. #2

Amps

N/A

52.0

52.0

Ckt. #2

Ampacity

N/A

52.0

52.0

Ckt. #2

Wire

Size

N/A

6

6

Ckt. #2

Max

Fuse3

1

Size

Amps

N/A

60

60

Ckt. #2

Max

Wire

Length

(Ft.)

N/A

100

100

cable (NM), trade name ROMEX, shall be that of 60°C (140°F) conductors, per the NEC (ANSI/NFPA 70) Article 336-30. If other than uncoated
(non-plated), 60°C or 75°C (140°F or 167°F) insulation, copper wire (solid wire for 10 AWG and smaller, stranded wire for larger than 10 AWG) is
used, consult applicable tables of the NEC (ANSI/NFPA 70).

2

Length shown is as measured 1 way along the wire path between the unit and the service panel for voltage drop not to exceed 10v, consult the
factory for longer wire lengths if needed.

6

2

VII. THERMOSTAT MOUNTING AND WIRING

A. Thermostat Location

Locate the thermostat about 5 ft. above the floor in an area with good
circulation at average indoor temperature.

Figure 11 — Thermostat

Do not mount the thermostat where it may be affected by:

• drafts or dead-air spots behind doors and in corners.

• hot or cold air flow from ducts.

• radiant heat from sun or appliances.

• concealed pipes or chimneys.

• unheated (uncooled) areas behind thermostat, such as an outside

wall.

5. Level the thermostat. Tighten the two mounting screws.

6. Replace the thermostat cover.

Figure 4 — Terminal and Switch Location

Figure 5 — Anticipation selection switch settings

The thermostat is a precision instrument and was carefully adjusted at the
factory. Handle it carefully.

CAUTION: Disconnect power supply before beginning installation of
thermostat to prevent electrical shock or equipment damage. Do not short

across thermostat terminals. This can burn out the thermostat anticipator.

B. Thermostat Mounting and Wiring

All wiring for the thermostat circuit must comply with NEC, state and local
codes. Use No. 20 AWG color-coded, insulated (35°C minimum) wire. If
thermostat is located more than 100 ft from unit (as measured along the
control voltage wires), use No. 18 AWG color-coded wires to avoid
excessive voltage drop.

1. In replacement applications, check the existing thermostat wiring for

cracked or frayed insulation. Replace any wiring in poor condition. All
wiring must comply with local codes and ordinances.

2. Run wiring (if necessary) to the location. Thread wires through hole

in the packing material saved in step 2. Connect the wires to the
terminals on the back of the thermostat. (See Figure 12.)

3. Push the excess wire back through the hole and plug any opening with

packing material to prevent drafts that may affect thermostat perfor­mance.

4. Loosely secure the thermostat to the wall with screws through the two

mounting holes in the middle of the thermostat. The sheetmetal
screws included with the thermostat are designed for use in a plas­ter wall and anchors are not needed.

Table 1 — First Stage Heat and Cool

Anticipation

Reference

Number

10

14

16

Approximate
Temperature

Differential

0.8°F

1.1°F

1.3°F

2.4°F

30

Table 2 — Second Stage Heat and Emergency Heat

Anticipation

Reference

Number

10

14

16

30

Approximate
Temperature

Differential

0.3°F

0.4°F

0.5°F

0.9°F

7

C. Wire Thermostat Cable to Unit Terminal Strip

Attach thermostat wires to low-voltage terminal block on left side of
control box in locations indicated in Figure 12.

Figure 17 — Terminal and Switch Location

NOTE: Do not connect any unused thermostat cable wires.

CAUTION: Recheck wiring color code schedule to be certain proper
terminals are connected before applying power. Improper wiring or

installation may damage thermostat.

VIII. CONDENSATE DRAIN LINE

The condensate drain exits the unit just above floor level at the right side
front corner of the unit. The condensate drain line is already internally
trapped therefore, no external condensate trap is required.

WARNING: Do not vent refrigerant to atmosphere. Recover all
refrigerant before system repair or final unit disposal to avoid personal injury
or death. Use all service ports and open all flow-control devices.

X. MAINTENANCE

NOTE: It is recommended that the Vert-I-Pak be inspected and serviced
on an annual basis by a qualified technician.

If you perform maintenance on the unit yourself, remember that certain
mechanical and electrical skills, plus specialized tools are required to
properly perform maintenance. Personal injury or death may result if you
are NOT properly trained. You should call your installing dealer if you are
uncertain about your ability to perform maintenance.

WARNING: Electrical shock hazard. Turn OFF power to the system
before performing any maintenance or removing panels. Failure to do so
can result in personal injury and/or death.

A. Filters

NOTE: Dirty filters are the most common cause of inadequate heating and
cooling performance.

• Inspect filters monthly

• Replace disposable type filters before they become clogged

• Use water and mild detergent to clean washable type filters

NOTE: Some filters are marked with an arrow to indicate the proper
direction of air flow through the filter. The arrow MUST point in the
direction of air flow.

Install a condensate drain line of the same size as the drain fitting on the unit.
PVC plastic pipe (3/4 in. I.D.) makes an ideal condensate line (if local codes
allow).

Run condensate drain line from unit to floor drain or outside perimeter of
building per local codes.

The condensate line must have a minimum drop of 1/4" per running foot as
it leaves the unit. When a horizontal run of 15 ft. or longer is required, it may
be necessary to install a vent tee in the drain line near the unit or use a larger
diameter drain line. This is to eliminate air trapping and allow proper
condensate drainage.

Heat pumps generate condensate during both cooling and heating modes.
Condensate drain line must be protected from freezing to prevent condensate
from backing up in unit during freezing outdoor conditions.

IX. REFRIGERANT

The unit is pre-charged at the factory to the correct operating charge and
should not require adjustment. However, should an adjustment be required
or if the unit requires service, adhere to the following precautions.

WARNING: Gage ports are equipped with schrader valves. To prevent

personal injury, wear safety glasses and gloves when handling refrigerant.

CAUTION: Compressor damage may occur if system is overcharged.

See unit serial tag for amount and type of refrigerant.

XI. INSTALLATION - FINAL CHECKLIST

1. Check to see if all duct work is sealed to unit for an airtight fit.

2. Insure that the condensate drain line is installed and run to an

appropriate disposal site.

3. Make sure the circuit breakers inside the unit are ON.

4. Insure that the thermostat is level and properly installed. Heat

anticipator indicator is set to the correct setting.

5. Test run in Heating, Cooling, and Emergency Heat mode as follows:

a. Set fan control to ON. If fan runs, return control to AUTO setting.

This verifies fan is working properly.

b. Set system control from OFF to COOL. Lower temperature

selector to 50°F or lower. The compressor should energize and
cool air should flow from room registers. Once cooling test is
complete, return system control to OFF setting. Wait 5 minutes.

c. Set system control to HEAT and raise temperature selector to 80°F

or higher. Compressor should energize, and warm air should flow
from room registers.

d. Set system control to EM HEAT (Emergency Heat). Compressor

should turn off and warm air should continue to flow from registers.

NOTE: During EM HEAT operation, temperature of air flowing from room
registers may be slightly warmer than during normal HEAT mode operation.

7. Leave both Installation Manual and Users Manual with owner or user

of equipment.

8. After 72 hours of operation, the unit will achieve full rated operating

performance.

8