INSTALLATION
&
OPERATION MANUAL
Single Package
Vertical Air Conditioning System
B – Series
18,000 – 24,000 – 30,000 – 36,000 –
42,000 – 49,000 – 60,000 Btuh
840-170-38
SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion, fire, electrical shock, or other
conditionswhichmaycausepersonalinjuryorpropertydamage.Consultaqualifiedinstaller,serviceagency,oryourdistributor
ordealerforinformationandassistance. Thequalifiedinstalleroragencymustusefactory-authorizedpartsoraccessorieswhen
modifying this product. Refer to the individual instructions packaged with the parts or accessories when installing.
Follow all safety codes. Wear safety glasses and work gloves. Read these instructions thoroughly and follow all warnings or
cautions attached to the unit. Always install units in accordance with 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.
GENERAL RECOMMENDATIONS (DO'S AND DON'T'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.
●
●
●
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●
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.
DOprovideminimuminstallationandserviceclearances.
DO build closet so that unit may be removed if necessary.
DO follow all guidelines for indoor and outdoor air system.
●
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DONOTsubstituteanycomponentswithoutcheckingwithyourdealerordistributor. Ifyoudosubstitute,getapproval
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.
●
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.
SUPPLIES NEEDED FOR INSTALLATION
The following items are required to install unit.
●
Adhesive, aluminum duct tape.
CAUTION: Incorrect type of duct tape may be a fire hazard. A failure to follow this warning could result in a fire and
personal injury or death.
6-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.
●
●
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Supplies to connect low-voltage thermostat to unit.
3
Section I – General Specifications
VERT-I-PAK® MODEL IDENTIFICATION GUIDE
MODEL NUMBER
V
H
B
36 K 10 RT A
SERIES
ENGINEERING CODE
OPTIONS
V=Vertical Series
E=Cooling with or without electric heat
H=Heat Pump
DESIGN SERIES
RT = Standard Remote Operation
A = 32" Cabinet
B = 68" Cabinet
NOMINAL CAPACITY
B-Series (Btu/h)
ELECTRIC HEATER SIZE
B-Series
18 = 18,000 36 = 36,000 60 = 60,000
24 = 24,000 42 = 42,000
30 = 30,000 49 = 49,000
VOLTAGE
K = 208/230V-1Ph-60Hz
05 = 5.0 KW
10= 10.0 KW
15 = 15.0 KW
20 = 20.0 KW
25 = 25.0 KW
B-SERIES CHASSIS SPECIFICATIONS
M
O
D
E
L
S
:
V(E,H)B18K05
V(E,H)B18K10 V(E,H)B24K05
V(E,H)B24K10 V(E,H)B30K10
V(E,H)B30K15
V(E,H)B36K10
V(E,H)B36K15
C
O
O
L
I
N
G
D
A
T
A
:
Cooling Cap.
17000
1700
10.0
17000
1700
10.0
22000
2200
10.0
22000
2200
10.0
30000
2900
10.0
30000
2900
10.0
35000
3500
10.0
35000
3500
10.0
Cooling Power (W)
SEER
Cooling SHR
0.78
0.78
0.75
0.75
0.70
0.70
0.70
0.70
E
H
E
P
L
E
C
T
R
I
C
A
L
H
E
A
T
D
A
T
A
:
Heater Size (KW)
5.0
17050
5000
20.8
10.0
34100
10000
41.6
5.0
17050
5000
20.8
10.0
34100
10000
41.6
10.0
34100
10000
41.6
15.0
51150
15000
62.4
10.0
34100
10000
41.6
15.0
51150
15000
62.4
Heating Cap. (Btu/h)
Heating Power (W)
Heating Current (A)
E
A
T
P
U
M
P
D
A
T
A
:
Heating Cap. (Btu/h)
Heating Power (W)
Heating Current (A)
COP
17000
1650
7.3
17000
1650
7.3
22000
2000
9.3
22000
2000
9.3
30000
2600
12.0
3.2
30000
2600
12.0
3.2
34000
3300
15.0
3.0
34000
3300
15.0
3.0
3.0
3.0
3.2
3.2
L
E
C
T
R
I
C
L
A
L
D
A
T
A
:
Voltage (V)
230/208
42.5
230/208
42.5
230/208
56.0
230/208
56.0
230/208
72.5
230/208
72.5
230/208
88.0
230/208
88.0
LRA - Comp. (A)
Min. Ckt. Amps (A)+
Power Connection
(14) 26
Hard Wire
(14) 52
(16.7) 26
Hard Wire
(16.7) 52
Hard Wire
(22.8)52
Hard Wire
(22.8)26,52
Hard Wire
(27.9)52
Hard Wire
(27.9) 26,52
Hard Wire
Hard Wire
H
Y
S
I
C
A
D
A
T
A
:
Unit Width (in.)
Unit Depth (in.)
30.00
21.00
68.00
320
:
30.00
21.00
68.00
320
30.00
21.00
68.00
320
30.00
21.00
68.00
320
30.00
21.00
68.00
330
30.00
21.00
68.00
330
30.00
21.00
68.00
340
30.00
21.00
68.00
340
Unit Height (in.)
Shipping Weight (lbs.)
A
I
R
F
L
O
W
D
A
T
A
Indoor CFM
640
65
640
65
800
65
800
65
1000
65
1000
65
1050
65
1050
65
Fresh Air CFM
Indoor Motor
1/3
1/3
1.0
1/3
1.4
1/3
1.0
1/3
1.4
1/3
1.0
1/3
1.4
1/3
1.8
1/3
2.2
1/3
1.8
1/3
2.2
1/3
2.5
1/2
3.0
1/3
2.5
1/2
3.0
Indoor Motor Amps
Outdoor Motor
1.0
1/3
Outdoor Motor Amps
1.4
4
+ Value in ( ) is for the unit
power. Value outside of ( )
is for electric heat only. See
Page 12.
M
C
O
D
E
L
S
:
V(E,H)B42K10
V(E,H)B42K15
V(E,H)B49K15
V(E,H)B49K20
V(E,H)B60K20
V(E,H)B60K25
O
O
L
I
N
G
D
A
T
A
:
Cooling Cap.
42000
4500
9.8
42000
4500
9.8
48500
5500
9.8
48500
5500
9.8
58000
6450
9.9
58000
6450
9.9
Cooling Power (W)
SEER
Cooling SHR
0.72
0.72
0.69
0.69
0.72
0.72
E
H
E
L
E
C
T
R
I
C
M
C
L
A
L
H
E
A
T
D
A
T
A
:
Heater Size (KW)
10.0
34100
10000
41.6
15.0
51150
15000
62.4
15.0
51150
15000
62.4
20.0
68200
20000
83.2
20.0
68200
20000
83.4
25.0
Heating Cap. (Btu/h)
Heating Power (W)
Heating Current (A)
85250
25000
104.2
E
A
T
P
U
P
D
A
T
A
:
Heating Cap. (Btu/h)
Heating Power (W)
Heating Current (A)
COP
40000
4000
19.0
3.0
40000
4000
19.0
3.0
47000
4800
22.0
3.0
47000
4800
22.0
3.0
59000
5636
25.0
3.0
59000
5636
25.0
3.0
L
E
C
T
R
I
A
L
D
A
T
A
:
Voltage (V)
LRA - Comp. (A)
230/208
104.0
230/208
104.0
230/208
129.0
230/208
129.0
230/208
169.0
230/208
169.0
Min. Ckt. Amps (A) +
Power Connection
(33) 52
Hard Wire
(33) 26,52
Hard Wire
(40.5) 26,52
Hard Wire
(40.5 ) 52,52
Hard Wire
(49) 52, 52
Hard Wire
(49), 26, 52, 52
Hard Wire
P
H
Y
S
I
C
A
D
A
T
A
:
Unit Width (in.)
Unit Depth (in.)
Unit Height (in.)
38.00
28.00
68.00
440
38.00
28.00
68.00
440
38.00
28.00
68.00
460
38.00
28.00
68.00
460
45.00
30.50
77.00
540
45.00
30.50
77.00
540
Shipping Weight (lbs.)
A
I
R
F
L
O
W
D
A
T
A
:
Indoor CFM
Fresh Air CFM
Indoor Motor
1400
70
1400
70
1400
70
1400
70
1800
70
1800
70
1/2
3.0
3/4
4.7
1/2
3.0
3/4
4.7
1/2
3.0
3/4
4.7
1/2
3.0
3/4
4.7
1/2
1/2
Indoor Motor Amps
Outdoor Motor
3.1
3.1
1/3 (2)
5.0
1/3 (2)
5.0
Outdoor Motor Amps
Section II – Dimensional Data
Figure 1
V(E,H)B18,24,30,36 Unit Dimensions (Inches)
CONDENSATE
DRAIN EXIT 2"
ABOVE FLOOR
5
Figure 2
V(E,H)B42, 49 Unit Dimensions (Inches)
Figure 3
V(E,H)B60 Unit Dimensions (Inches)
Section III – Installation
TheVert-I-Pak was designed for installation in residential and light commercial applications. These instructions detail a
typical method of installation. Figure 4 shows the typical component location and airflow paths through the unit.
Units are available in three return air configurations: front "free-return" with disposable filter; front ducted return with 1"
duct flange; and left side ducted return with 1" duct flange. See Figure 10 on Page 11.
6
Figure 4
Unit Configuration
1) INDOOR AND OUTDOOR AIR REQUIREMENTS
The indoorandoutdoorairsystemsaredesignedtooperateatspecifiedairflowratesandexternalstaticpressures. Thesupply
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.
A. Outdoor Air System
Asacompletelyself-containedsystem,theVert-I-Pakunitrequiresanadequatesupplyofoutdoorairtoexchangeheatfrom
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 9 shows two typical ducted OA designs.
CAUTION: To ensure proper operation, the outdoor air intake and discharge air paths must be free and unobstructed.
Thetwoairpathsmustbesituatedtoensurethattheintakeanddischargeairdonotrecirculate(alsocalledshort-circuit).
7
Figure 5
VPBWP3 – 8/14 Wall Plenum
For Models
• VE/VHB18
• VE/VHB24
Figure 6
VPBWP4 – 8/14 Wall Plenum
For Models
• VE/VHB18
• VE/VHB24
• VE/VHB30
• VE/VHB36
8
Figure 7
VPBWP5 – 8/14 Wall Plenum
For Models
• VE/VHB42
• VE/VHB49
Figure 8
VPBWP6 – 8/14 Wall Plenum
For Model
• VE/VHB60
9
B. Ducted Condenser Air
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).
Outdoor Fan Performance
Table 1
Model
0.1
0.2
0.3
0.4
0.5
790
VE/HB18
VE/HB24
VE/HB30
VE/HB36
VE/HB42
VE/HB49
VE/HB60
1300
1300
1300
1730
2100
2600
2990
1180
1180
1200
1660
2000
2500
2900
1100
1100
1100
1600
1900
2400
2800
950
950
790
1000
1560
1800
2300
2670
810
1400
1700
2100
2450
Note: Italic type indicates performance outside the required operating
window of ± 10% of rated SCFM.
Figure 9
Typical Ducted Outside Air Configuration
EXHAUST
INTAKE
EXHAUST
CEILING
CEILING
BACK
OF
UNIT
OUTDOOR
AIR INTAKE
OUTDOOR
AIR
INTAKE
OUTSIDE
WALL
OUTSIDE
WALL
OUTSIDE
WALL
OUTDOOR AIR
EXHAUST
OUTDOOR
AIR EXHAUST
FLOOR
FLOOR
INTAKE
10
C. Indoor-Air (Conditioned Supply Air) System
TheVEB/VHBseriesunitmaybeappliedineitherafreereturnairconfigurationoraductedreturnairconfiguration. Thesupply
airpathisintendedtobeducted. Thedesignandconstructionoftheindoor-airsystemmustprovideadequateairdistribution
to ensure comfort levels throughout the structure.
Thecombinedpressurelossesofthereturnandsupplyairpathsmustnotexceedtheexternalstaticcapabilitiesofthesystem
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.
Indoor Fan Performance
Table 2
Indoor Blower Air Flow, SCFM (ARI RATED as shown)
RA Grille Minimum Net
Free Open Area (Sq. In.)
Model
ESP
0.1
0.2
0.3
0.4
0.5
VE/HB18
VE/HB24
VE/HB30
VE/HB36
VE/HB42
VE/HB49
VE/HB60
Indoor
Indoor
Indoor
Indoor
Indoor
Indoor
Indoor
850
980
750
890
640
800
550
720
940
450
650
250
300
375
400
525
525
675
1120
1220
1570
1670
1980
1070
1120
1510
1610
1920
1000
1050
1470
1570
1860
830
990
860
1400
1500
1800
1350
1450
1700
Note: Italic indicates performance outside the required operating window of +/- 10% of rated SCFM. All values are wet
coil with filter installed.
Figure 10
Return Air Options
Front Free
Return
Front Ducted
Return
Side Ducted
Return
NOTE: Ducted return air configurations require field fabrication of a duct-mounted filter box. Filters are not
supplied with units configured for ducted return.
11
2) Electrical
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: Theunitmustbeelectricallywiredandgroundedinaccordancewithallstateandlocalcodes,nationalelectric
code, andNFPA70. UnitandcontrolswillNOToperateunlessproperlygrounded. Agroundlugisprovidedforground
connection. Use only approved copper wire and connectors from unit to service panel.
B. Power Supply
NOTE: Linevoltagecircuitiscompletelyfactorywired. Makealllinevoltageconnectionsinsidecircuitbreakerjunctionbox.
ThecircuitbreakersorfusesusedforbranchcircuitprotectionshouldbeULrecognized. Ifcircuitbreakersareused,thecircuit
breakerforthecompressorcircuitmusthaveaULHACRrating. Iffusesareused,thefuseforthecompressorcircuitMUST
be time delay type.
CAUTION: Unitsaredualvoltagerated208-230/1/60. The24Vcontroltransformermustbeconnectedforeither208V
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.
Minimum Circuit
Ampacity
Maximum Fuse2 or
Minimum Wire Size1 Breaker Size Amps
Model
Compressor Amps Outdoor Fan Amps Indoor Fan Amps
V(E,H)B18
V(E,H)B24
V(E,H)B30
V(E,H)B36
V(E,H)B42
V(E,H)B49
V(E,H)B60
9.3
1.4
1.4
2.2
3.0
4.5
5.0
5.0
1.0
1.0
1.8
2.5
3.0
3.0
3.1
14.0
16.7
22.8
27.9
33.0
41.0
49.0
12
12
10
8
20
25
30
40
50
60
60
11.4
15.0
17.9
20.4
26.4
32.1
8
6
6
He ater Size
(KW)
Chassis
Available
Ckt #1
Ckt #1 Wire Ckt #1 Max. Ckt #2 & 33
Ckt #2 & 33
Ampacity
Ckt #2 & 33
Wire Size1
Ckt #2 & 33
Max. Fuse2
Ckt #1 Amps
20.8
Ampacity
Size1
10
6
Fuse2
Amps
N/A
5.0
18/24
26.0
52.0
26.0
52.0
26.0
30
N/A
N/A
N/A
N/A
6
N/A
N/A
60
10.0
15.0
20.0
25.0
18/24/30/36/42
30/36/42/48
48/60
41.6
60
N/A
20.8
10
6
30
41.6
41.6
41.6
52.0
52.0
52.0
41.6
60
6
60
60
20.8
10
30
6
60
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
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
3
Time-delay fuse.
Circuit #3 is only used for 25kw heater.
Heat Pump
(Field Wiring)
Heat Pump
Auxiliary
Heater #1
(Field Wiring)
Auxiliary
Heater #1
Ground
(Field Wiring)
Auxiliary
Heater #2
Auxiliary Heater #2
(Field Wiring)
Ground Lug
Line Voltage And Ground Connections
Unit Wiring with VPDB1 Distribution Block
12
3) 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.
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.
B. Thermostat Mounting and Wiring
The thermostat is a precision instrument and was carefully adjusted at the factory. Handle it carefully.
CAUTION: Disconnect the power supply before beginning installation of the thermostat to prevent electrical shock
or equipment damage. Do not short across the thermostat terminals. This can burn out the thermostat anticipator.
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 the thermostat is located more than 100 ft. from the 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 the wires through a hole in the packing material saved in Step 2.
Connect the wires to the terminals on the back of the thermostat. (See Figure 11.)
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 thermo-
stat.
5. Level the thermostat. Tighten the two mounting screws.
6. Replace the thermostat cover.
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 Figures 1, 2 & 3.
Figure 11
G
R
Y
B
W
E
C
2
Fan
Compressor
Auxiliary
Heat
Common
Thermostat
Wiring
24V
R
Reversing
Valve
Emergency
Heat
G
Y
B
W2
E
X
13
4) CONDENSATE DRAIN LINE
The condensate drain exits the unit 2" 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.
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.
NOTE: If the unit is to be installed in an attic or furred space where damage may result from condensate overflow, it may
be necessary to provide a field-supplied secondary drain pan. Always refer to local and national codes.
INSTALLATION - FINAL CHECKLIST
Is power to the unit ON?
Is ductwork sealed for an airtight
fit?
Is the thermostat level and
properly installed?
!
!
!
!
!
!
Are circuit breakers/power
Is the condensate drain line
Is the heat anticipator indicator
set to the correct setting.?
disconnect inside of the unit
ON?
installed and run to an
appropriate disposal site.?
Test Run
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 the registers. (This step is for heat pumps only.)
NOTE: During EM HEAT operation, temperature of air flowing from room registers may be slightly warmer than
during normal HEAT mode operation.
Leave both Installation Manual and Users Manual with owner or user of equipment.
After 72 hours of operation, the unit will achieve full rated operating performance.
14
Section IV – OWNER'S MANUAL AND OPERATING
INFORMATION
IDENTIFYING YOUR SYSTEM
Take the time to familiarize yourself with the type of system you have. This knowledge will be of use in understanding the
basic operation of your unit.
A self-contained unit, like the Vert-I-Pak, has all of its major components in one cabinet located inside your home. The unit
does not have a separate outdoor unit like a traditional “split-system” air conditioner or heat pump. Figure 4 shows the
location of the major components inside the cabinet.
The product model and rating data label is affixed to the unit front panel and provides the necessary information for specific
identification of the unit. You should familiarize yourself with the model and serial numbers listed on the label.
IMPORTANT FACTS
To better protect your investment and to eliminate unnecessary service calls, familiarize yourself with the following facts:
Your system should never be operated without a clean air filter properly installed. A dirty, clogged air filter will increase
operating costs and shorten the life of the unit. The air filter should be replaced as it becomes dirty.
Supply-air and return-air registers should not be blocked. Restricted airflow reduces the efficiency and life span of your
unit.
For your system to function properly, it MUST have a constant supply of outdoor air to the outdoor air coil located inside
the unit. The outdoor-air intake and exhaust openings are located on the back side of the unit. Familiarize yourself with the
outside air openings on the building and check to ensure that they are not obstructed.
Thermostat
Your multipurpose indoor thermostat is the control center for your comfort system. You should familiarize yourself with its
proper operation. Attempting to control the system by other means – for instance, switching the electrical supply power ON
and OFF – may cause damage to the unit.
With some thermostats, increasing the HEAT mode temperature set point more than 2°F may cause the auxiliary electric
heaters to operate to satisfy the call for heating. To minimize energy costs, do not increase the HEAT mode temperature
set point by more than 2°F at a time.
Depending on the design of your home and its ventilation ductwork and registers, areas of warm or cool air may develop
throughout the home. Operating the unit with the fan switch “ON” increases air mixing throughout the home and reduces
temperature variations within the home.
Dehumidification
Duringthecoolingseason, theVert-I-Pakalsodehumidifiestheairinthehomewhileisitcoolingtheair. Afterafewminutes
of operation, water should run freely from the condensate drain line extended to the outside of your home. If condensate
isnotrunningfromthedrainline,checktobesurethatthedrainhoseorpipeisproperlyconnectedtothedrainfittinglocated
on the bottom of the unit which is accessible from beneath the home. Check the drain line periodically during the cooling
season to ensure the condensate is running freely from outside the home and draining away from the home’s foundation.
(Note: in lower humidity climates, the indoor air may be too dry to generate condensate during the cooling mode.)
Heat Pump
If you are a first-time owner of an all-electric heat pump, the operating characteristics of the system may be different than
you are accustomed to as compared to conventional electric resistance, gas or oil furnaces. Air entering a conventional
furnace at 60°F may be warmed 60° to 100°F. The supply air leaving the registers would then be between 120° and 160°F
depending on the system. A heat pump warms the same 60°F air 20° to 30°F. The supply air leaving the registers would
then be between 80° and 90°F. This air may feel cool because it is slightly less than your body temperature. However, it
is sufficiently warm to keep you comfortable and is adding heat to your home. A heat pump will run for much longer periods
of time than a conventional furnace. This longer operational time is normal for all heat pumps and is saving you energy in
comparison to many conventional furnaces. On days with outdoor temperatures below 40°F, it is normal for the heat pump
15
to run for extended periods of time and may be assisted by the auxiliary electric resistance heating elements. Once you
understandtheoperationofyournewheatpump,youwillappreciateitsconstant,evenheatandlowerenergyconsumption.
Heat Mode Operation
Duringtheheatmodeofoperation,frostoricemaybuildupontheoutdoor-aircoilafteroperatingforextendedperiodsduring
particularly cool and humid weather. When this occurs, your heat pump senses this condition and goes through a defrost
cycle. During the defrost cycle, the outdoor-air blower is turned off, and the reversing valve reverses the flow of refrigerant
through the outdoor-air coil so it is heated and the frost or ice melts. You may notice the defrost cycle inside your home by
a faint click and hissing sound and a slight change in the sound created by the blower as the defrost cycle begins and ends.
During the defrost cycle, you may also notice that the air is quickly heated as the defrost cycle ends. Outside the home, a
cloud of water vapor created by the melting frost or ice may be visible as it is exhausted. This is normal and keeps the unit
working efficiently. Do not be alarmed!
Condensate
The heat pump may generate condensate during both the cooling and heating modes of operation. For proper operation,
a condensate drain line must be extended from the drain fitting on the right side of the unit to the perimeter of the home
ortoaproperdrainlocation.Thedrainlinemustbeslopedtowardstheoutsideofthehomeordrain locationandbeprotected
from freezing.
NOTE: In order for condensate to drain freely, the unit must be installed level.
OPERATING THE VERT-I-PAK
THERMOSTAT OPERATION
Theoperationofthesystemiscontrolledbytheindoorthermostat. Mostthermostatshave3controls:atemperaturecontrol
selector, a FAN control, and a SYSTEM or MODE control. (See Figure 3.)
The temperature control is a selector or set of buttons that allows you to establish the degree of temperature that you wish
to maintain for your personal comfort. Some thermostats have two temperature control selectors: one for setting the
temperature desired during the cooling cycle, and one for setting the heating operation temperature.
Typical settings are 78°F for cooling and 68°F for heating.
Fan Control
The FAN control offers two options for controlling the indoor-air blower: AUTO and ON. When the FAN control is set to
AUTO, the blower will operate only while the thermostat operates the cooling or heating equipment. When the FAN control
is set to ON, the blower will operate continuously – regardless of whether cooling or heating equipment is operating. This
setting allows for continuous air circulation and filtration.
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System Control
TheSYSTEMorMODEcontrolonyourthermostatoffersthefollowingselections:COOL,OFF,HEAT,andEMHEAT.Neither
thecoolingnorheatingequipmentwilloperatewhentheSYSTEMorMODEcontrolissettoOFF.WiththeSYSTEMorMODE
control set to COOL, your unit will operate in cooling mode. With the SYSTEM or MODE control set to HEAT, your unit will
operateinheatingmode.
Auxiliary Heating
Yoursystemalsoincludesanauxiliaryelectricheatingsource.TheSYSTEMorMODEcontroloptionsHEATandEMHEAT
provideconvenientselectionbetweenthetwoheatingappliances.TheheatpumpwilloperatewhenSYSTEMorMODEcontrol
is set to HEAT. The auxiliary electric heater may also be used on cold days to supplement heat pump heating. With the
SYSTEM or MODE control set to EM HEAT, the heat pump is turned off and the auxiliary electric heat is activated. The unit
is now operating as an electric furnace.
On heat pump systems, the wall thermostat regulates the use of auxiliary electric heat to maximize energy efficiency and
your homecomfort.
COOLING CYCLE
Whenoperatinginthecoolingcycle,yourunitwilloperateuntiltheindoortemperatureisloweredtothelevelyouhaveselected
ontheindoorthermostat.Onextremelyhotdays,yourunitwilloperateforlongerperiodsoftimeandhaveshorter“off”periods
than on moderate days.
Thefollowingaretypicalconditionsthataddextraheatand/orhumiditytoyourhomeandforceyourcoolingunittoworklonger
to keep your home comfortable:
• Entrance doors are frequently opened and closed.
• Laundryappliancesarebeingoperated.
• A shower is running.
• More than the usual number of people are present in the home.
• More than the normal number of electric lights are in use.
• Drapes or blinds are open on the sunny side of the building or home.
HEATING CYCLE
WiththeSYSTEMcontrolofyourindoorthermostatsettoHEAT,theheatingsectionofyourhomecomfortsystemwilloperate
untilroomtemperatureisraisedtothelevelyouhaveselected.Ofcourse,theheatingunitwillhavetooperateforlongerperiods
tomaintainacomfortableenvironmentoncoolerdaysandnightsthanonmoderateones.Whenthedemandisgreaterthan
the capacity of the heat pump alone, the auxiliary electric heaters will supplement the heat pump.
NOTE: Non-Heat Pump models use a single stage heat thermostat. When a demand for heat is made,
these units will use the electric heat strip heat immediately.
DEFROST CYCLE
When your heat pump is providing heat to your home and the outdoor temperature drops below 45°F, moisture may begin
tofreezeonthesurfaceoftheoutdoor-aircoil.Ifallowedtobuildup,thisicewouldimpedeairflowacrossthecoilandreduce
theamountofheatabsorbedfromoutsideair.Tomaintainenergy-efficientoperation,yourheatpumphasanautomaticdefrost
cycle.
Thedefrostcyclewilloccuronlyificeissufficienttointerferewithnormalheatingoperation.Aftericeismeltedfromtheoutdoor-
air coil, the unit automatically switches back to normal heating mode.
Do not be alarmed if steam or fog appears at the outdoor-air exhaust during the defrost cycle. Water vapor from the melting
ice may condense into a mist in the cold outdoor air.
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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, consider these
importantsafetyprecautions:
WARNING: Electrical Shock Hazard. Before attempting any service work or routine maintenance, turn off all electrical
connections to the unit. Failure to do so may result in property damage, personal injury and/or death.
CAUTION: Although great care has been taken to minimize sharp edges in the construction of your unit, be extremely
careful when handling parts or reaching into the unit.
REPLACE AIR FILTER
A dirty air filter reduces the efficiency of your Vert-I-Pak and allows lint and dirt to accumulate on the indoor-air coil. Lint and
dirt on the indoor-air coil can damage your unit and void the warranty. The air filter should be replaced as it becomes dirty.
To replace the filter (front air return units):
1. Slide the filter to the right until it clears the filter rails (See Figure 12).
2. Removethefilter.
3. Install new disposable filter.
CAUTION: Do not operate your system without a filter in place, nor block the front of the unit return air opening.
Filter Replacement
Figure 12
Filter Rails
Air Filter
To remove the filter,
slide it to the right side
of the unit as shown.
Removing the Filter From the Front Filter Rack
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INSPECT AND CLEAN INDOOR-AIR COIL
Eventually, minor amounts of lint and dirt may pass through the filter and collect on the indoor-air coil. These minor
accumulationscanbecarefullyvacuumedawaywithabrushattachmentonavacuumcleaner.Caremustbetakentoavoid
bending the aluminum fins on the coil. Bent fins should be straightened using a special fin tool available from most HVAC
service technicians.
INSPECT OUTDOOR-AIR INTAKE AND EXHAUST
The unit’s outdoor-air intake and outdoor-air exhaust paths must remain clear. Check the OA exhaust frequently. Keep it
freeofalldebris, snow, orice. TheOAintakeshouldalsobekeptfreeofobstructions. BlockingtheOAexhaustorOAintake
opening will reduce the efficiency of your unit, could damage it, and void your warranty.
INSPECT AND CLEAN CONDENSATE DRAIN
Thecondensatedrainmustberoutedtoasuitabledrainagearea. Checktheunitcondensatedrainperiodically. Keepitfree
ofanythingthatmayblockorimpedetheflowofcondensatewater. Ifthereisanyaccumulationofforeignmatterinthedrain
pipe, it should be removed and cleaned. The entire drain line must be protected from freezing.
19
Use Factory-Certified Parts
FRIEDRICH AIR CONDITIONING CO.
Post Office Box 1540 • San Antonio, Texas 78295-1540
4200 N. Pan Am Expressway • San Antonio, Texas 78218-5212
(210) 357-4400 • FAX (210) 357-4480
Printed in the U.S.A.
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