MITSUBISHI ELECTRIC EH03 Series Multi Position Air Handler Instruction Manual

Instruction Manual for MITSUBISHI ELECTRIC models including: PVFY-P-NAMU-E 1, MVZ-A-AA4 7, SVZ-KP-NA, PVA-A-AA4 7, EH03 Series Multi Position Air Handler, Multi Position Air Handler, Position Air Handler, Air Handler, Handler

Electric Heat Installation Manual

[PDF] Electric Heat Installation Manual

The static pressure of the air handler is set according to this installation manual (Section 6.2). • The enclosure is secured to the air handler according ...

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IM EH MVZ PVA PVFY SVZ 202307

MANUFACTURED FOR: MITSUBISHI ELECTRIC US, INC.

Electric Heat Installation Manual
For use with: PVFY-P-NAMU-E(1) / MVZ-A-AA4(7) / SVZ-KP-NA / PVA-A-AA4(7) Multi-Position Air Handler

ELECTRIC HEAT INSTALLATION MANUAL

FOR INSTALLER

For safe and correct use, please read this installation manual thoroughly before installing these components.

Electric Heat Installation Manual
Table of Contents
1. Checklist After Installation ........................................................................................................ 3 2. Dimensions ............................................................................................................................ 4 3. Electric Heat Kit Models .......................................................................................................... 5 4. Electric Heat Kit Accessories ................................................................................................... 8
4.1. Separate Power Kit [PVA-A·AA4(7) and MVZ-A·AA4(7) models] ...................................... 8 4.2. Auxiliary Heat Lockout [PVA-A·AA4(7), MVZ-A·AA4(7) and SVZ-KP-NA models] .............. 8 5. Safety Precautions .................................................................................................................. 9 6. Installing the Electric Heat Kit .................................................................................................. 11 6.1. Read the safety precautions section of the Multi-Position Air Handler before installing the electric heat option. ...................................................................................................... 11 6.2. Setting Proper External Static Pressure ........................................................................ 11
6.2.1. PVFY-A·NAMU-E(1) Models .............................................................................. 12 6.2.2. MVZ-A·AA4(7), SVZ-KP-NA and PVA-A·AA4(7) Models ...................................... 13 6.2.3. MVZ-A·AA4(7) and PVA-A·AA4(7) Models ......................................................... 13 6.3. Enabling Electric Heat ................................................................................................. 14 6.3.1. PVFY-A·NAMU-E(1) Models .............................................................................. 14 6.4. Operation Mode .......................................................................................................... 15 6.4.1. PVFY-A·NAMU-E, PVA-A·AA4, and MVZ-A·AA4 Models ..................................... 15 6.4.2. PVFY-A·NAMU-E1, PVA-A·AA7, MVZ-A·AA7 and SVZ-KP-NA Models ................ 16 6.5. Attaching the Enclosure to the Air Handler .................................................................... 17 6.6. Proper Support in the Horizontal Position for the Multi-Position Air Handler with Electric Heat Kit ............................................................................................................................. 26 6.7. Rotating Circuit Breaker Orientation for Horizontal Left Installations ................................ 27 7. Electrical Schematics ............................................................................................................. 28 7.1. PVFY-A·NAMU-E(1) Models ......................................................................................... 28 7.2. MVZ-A·AA4(7), SVZ-KP·NA and PVZ-A·AA4(7) Models ................................................. 31 7.3. MVZ-A·AA4(7), SVZ-KP-NA and PVZ-A·AA4(7) Models with Separate Power Terminal Block (SPTB1) ................................................................................................................... 34

Specifications are subject to change without notice.

Electric Heat Installation Manual
1. Checklist After Installation
· The static pressure of the air handler is set according to this installation manual (Section 6.2). · The enclosure is secured to the air handler according to this installation manual. · All penetrations to the air handler and electric heat enclosure must be properly sealed to minimize air
leakage before operation. · Separate power for the Electric Heat Kit. The Electric Heat Kit is not powered by the air handler. · Enabled electric heat control according to this installation manual (Section 6.3 and 6.4). · Electric Heat Kit is controlled exclusively through the use of CN24-1 and CN24-2 (2-stage models)
connections on the indoor unit control board. · The building power supply circuit breaker is sized per Maximum Overcurrent Protection (MOP) listed for
the provided voltage.
NOTE
The factory-installed circuit breaker in this kit is provided as a disconnect switch only.

Specifications are subject to change without notice.

Electric Heat Installation Manual

2. Dimensions

Units: mm (in.)

151.6

(6)

(1)

541.8 (21-1/4) 403.6 (15-7/8) (DUCT)

28.6ø & 22ø KNOCKOUT TYP. 4
LINE VOLTAGE
42ø & 35ø KNOCKOUT TYP. 3
LINE VOLTAGE

41.8 (1-5/8)
50 (2)

40.8

(2)

(1-5/8)

LEFT SIDE VIEW

CIRCUIT BREAKER(S)

77.8

(3)

(2)

TOP VIEW

B (DUCT)

77.8 (3)
29 (1-1/8)

116.1 (4-9/16)

RIGHT SIDE VIEW

68 (2-5/8)

MODEL

EH03-MPA-S(B)

EH05-MPA-S(B)

EH08-MPA-S(B) 433 376

EH03-SVZ-S

(17) (14-13/16)

EH05-SVZ-S

EH08-SVZ-S

EH03-MPA-M(B)

EH05-MPA-M(B)

EH08-MPA-M(B) EH10-MPA-M(B) EH05-SVZ-M

534 477 (21) (18-13/16)

EH08-SVZ-M

EH010-SVZ-M

EH10-MPA-L(B)

EH15-MPAS-L(B)

635 (25)

579 (22-13/16)

EH17-MPAS-L(B)

139.3 (5-1/2)
A
FRONT VIEW

Specifications are subject to change without notice.

Electric Heat Installation Manual
3. Electric Heat Kit Models
The electric heater kit can be used in all orientations with the PVA, MVZ, PVFY and SVZ multi position air handlers. This includes vertical, horizontal right, horizontal left and downflow. For horizontal left installations, please refer to the section on rotating the breaker orientation for proper switch direction. For all installations, please refer to the Setting Proper External Static Pressure section to ensure proper static pressure settings for the air handler model.

IMPORTANT
For PVFY installations, Switch A and C must be set as instructed depending on the installation direction. For PVA, MVZ and SVZ installations, mode 08/108 and 10/110 must be set as instructed depending on the installation direction. These settings ensure proper airflow when the electric heater is installed.

For safe and correct use, please read this installation manual and the installation instructions which accompanied the Multi-Position Air Handler thoroughly before installing the Electric Heat Kit. Use the information shown in this manual when setting the static pressure for the air handler. The settings could be different from the multi-position air handler installation manual. See Section 6.2. Ensure the Electric Heat Kit received is the correct model for the Multi-Position Air Handler it will be installed with. Please follow all local codes when installing Electric Heat Kit.

CAUTION
Do not power the electric heat kit from the outdoor unit. A separate power supply must be provided.
Unit must be set on non-combustible floor when installed in the downflow configuration.
This kit must be controlled exclusively through the use of CN24-1 and CN24-2 (2 stage models) connections on the indoor unit control board.

The building power supply circuit breaker is sized per MOP listed for the provided voltage.

NOTE
The factory-installed circuit breaker in this kit is provided as a disconnect switch only.

Specifications are subject to change without notice.

Electric Heat Installation Manual Table 3-1: All electric heat options can be used in combination with heat pump operation; 208/240V.
Electric Heat Kit

8.75+8.75 EH17-MPAS-L(B)

7.5+7.5 EH15-MPAS-L(B)

EH10-MPA-L(B)

5+5 EH10-MPA-M(B)

4+4 EH08-MPA-M(B)

EH05-MPA-M(B)

EH03-MPA-M(B)

4+4 EH08-MPA-S(B)

EH05-MPA-S(B)

EH03-MPA-S(B)

EH10-SVZ-M

EH08-SVZ-M

EH05-SVZ-M

EH08-SVZ-S

EH05-SVZ-S

EH03-SVZ-S

5+5

4+4

Stages (1st + 2nd)

PVFY-P08NAMU-E1
PVFY-P12NAMU-E PVFY-P12NAMU-E1
PVFY-P18NAMU-E PVFY-P18NAMU-E1
PVFY-P24NAMU-E PVFY-P24NAMU-E1
PVFY-P30NAMU-E PVFY-P30NAMU-E1
PVFY-P36NAMU-E PVFY-P36NAMU-E1
PVFY-P48NAMU-E PVFY-P48NAMU-E1
PVFY-P54NAMU-E PVFY-P54NAMU-E1
MVZ-A12AA4 MVZ-A12AA7
MVZ-A18AA4 MVZ-A18AA7
MVZ-A24AA4 Air Handler MVZ-A24AA7
Model MVZ-A30AA4 MVZ-A30AA7
MVZ-A36AA4 MVZ-A36AA7
SVZ-KP12NA
SVZ-KP18NA
SVZ-KP24NA
SVZ-KP30NA
SVZ-KP36NA
PVA-A12AA7
PVA-A18AA7
PVA-A24AA7
PVA-A30AA4 PVA-A30AA7
PVA-A36AA4 PVA-A36AA7
PVA-A42AA4 PVA-A42AA7

Specifications are subject to change without notice.

Electric Heat Installation Manual

Table 3-2

Electric Heat Part Number

Heater kW
208V/ 240V

EH03-SVZ-S EH05-SVZ-S EH08-SVZ-S EH05-SVZ-M EH08-SVZ-M EH10-SVZ-M EH03-MPA-S(B) EH05-MPA-S(B) EH08-MPA-S(B) EH03-MPA-M(B) EH05-MPA-M(B) EH08-MPA-M(B) EH10-MPA-M(B) EH10-MPA-L(B)
EH15-MPASL(B)

2.3/3.0 3.8/5.0 6.0/8.0 3.8/5.0 6.0/8.0 7.5/10 2.3/3.0 3.8/5.0 6.0/8.0 2.3/3.0 3.8/5.0 6.0/8.0 7.5/10 7.5/10
11.3/15

EH17-MPASL(B)

13.2/17.5

Circuit 1 Circuit 2 Circuit 1 Circuit 2

Heater Amps1 208V/ 240V
10.8/12.5 18.1/20.8 28.9/33.3 18.1/20.8 28.9/33.3 36.1/41.7 10.8/12.5 18.1/20.8 28.9/33.3 10.8/12.5 18.1/20.8 28.9/33.3 36.1/41.7 36.1/41.7 27.1/31.2 27.1/31.2 31.6/36.5 31.6/36.5

MCA1
208V/ 240V
13.5/15.6 22.6/26 36.1/41.7 22.6/26 36.1/41.7 45.1/52.1 13.5/15.6 22.6/26 36.1/41.7 13.5/15.6 22.6/26 36.1/41.7 45.1/52.1 45.1/52.1 33.9/39.1 33.9/39.1 39.5/45.6 39.5/45.6

MOP1
208V/ 240V
15/20 25/30 40/45 25/30 40/45 50/60 15/20 25/30 40/45 15/20 25/30 40/45 50/60 50/60 35/40 35/40 40/50 40/50

Htr & Mtr Amps2
208V/ 240V

MCA2
208V/ 240V

13.2/14.9 20.5/23.2 31.3/35.7 21.4/24.1 32.2/36.6 39.4/45 13.2/14.9 20.5/23.2 31.3/35.7 14.1/15.8 21.4/24.1 32.2/36.6 39.4/45 40.6/46.2 31.6/35.8 27.1/31.2 36.1/41 31.6/36.5

16.5/18.6 25.6/29 39.1/44.7 26.7/30.2 40.2/45.8 49.3/56.2 16.5/18.6 25.6/29 39.1/44.7 17.7/19.8 26.7/30.2 40.2/45.8 49.3/56.2 50.8/57.7 39.5/44.7 33.9/39.1 45.1/51.2 39.5/45.6

MOP2
208V/ 240V
20/20 30/30 40/45 30/30 45/50 50/60 20/20 30/30 40/45 20/20 30/30 45/50 50/60 60/60 40/45 35/40 45/60 40/50

Factory Installed Discon-
nect (Circuit Breaker)
20 30 45 30 50 60 20 30 45 20 30 50 60 60 45 40 60 50

1 Heater amps; no motor / 2 Heater and motor amps (connect air handler power supply to largest circuit breaker).

· Voltage and Amperage based on 60Hz · Motor amps are placed on circuit 1 when required · Unit tested at 0.60 in WG external static pressure · Minimum installation clearance to combustible material 0" · Maximum outlet air temperature 200° F · The building power supply circuit breaker must be sized per MOP
listed for the provided voltage. · The factory installed circuit breaker in this kit is provided as a
disconnect switch only.

NOTE
Dual circuit heater kits are provided with a single point power block which can be removed if providing power individually to the 2 circuits. If providing power to the single point power block, then combine the amp draw and size the building MOP per the NEC.

Specifications are subject to change without notice.

Electric Heat Installation Manual
4. Electric Heat Kit Accessories
4.1. Separate Power Kit [PVA-A·AA4(7) and MVZ-A·AA4(7) models]
Part Number: SPTB1 This kit allows the installer to connect power from another source to the air handler.
NOTE
S2 & S3 still must come from outdoor unit for communication.
4.2. Auxiliary Heat Lockout [PVA-A·AA4(7), MVZ-A·AA4(7) and SVZ-KP-NA models]
Part Number: ETC-211020-MIT This option prevents the Electric Heat Kit from operating above a set outside temperature.

Specifications are subject to change without notice.

Electric Heat Installation Manual
5. Safety Precautions
Before installing the unit, make sure you read all the "Safety Precautions". The "Safety Precautions" provide very important points regarding safety. Make sure you follow them.
WARNING
This symbol denotes what could lead to serious injury or death if you misuse the Electric Heat Kit.
CAUTION
This symbol denotes what could lead to a personal injury or property damage if Electric Heat Kit is misused.
CAUTION
· Do not install in any place exposed to flammable gas leakage. Flammable gases that accumulate around the Electric Heat Kit may cause an explosion.
· Do not use in any special environment. Using in any place exposed to oil (including machining oil), steam and sulfuric gas may deteriorate the performance significantly or give damage to the component parts. Do not install in any place at a temperature of more than 104° F or less than 32° F or exposed to direct sunlight.
· Do not install in any place where acidic or alkaline solution or special spays are often used. Doing so may cause an electric shock or malfunction.
· Wire so that it does not receive any tension. Tension may cause wire breakage, heating or fire.
· Do not install in an environment where moisture is condensed into water. Doing so may cause electric shock or malfunction.
· Do not wash with water. Doing so may cause electric shock or malfunction.

Specifications are subject to change without notice.

Electric Heat Installation Manual
WARNING
· Ask your technical representative to install the unit. Any deficiency caused by your own installation may result in electric shock or fire.
· Ensure that installation work is done correctly following this instruction manual. Any deficiency caused by installation may result in electric shock or fire.
· Firmly connect the wiring using the specified cables. Carefully check that the cables do not exert any forces on the terminals. Improper wiring connections may produce heat and possibly fire.
· Never modify or repair the Electric Heat Kit. Any deficiency caused by your modification or repair may result in electric shock or fire. Consult with your technical representative about repair.
· All electrical work must be performed by a licensed technician, according to the local regulations and the instructions given in this manual. Any lack of electric circuits or any deficiency caused by installation may result in electric shock or fire.
· Stop the operation if any malfunction occurs. If malfunction occurs (burning smell, etc.) stop the operation and turn off the power supply. Contact your technical representative. If the controller continues to operate after a malfunction occurs, this may cause damage, electric shock or fire.
· Do not turn on the main power until installation has been completed. Doing so may result in electric shock or fire.
· Keep the area around the unit clean to keep the indoor unit from accumulating dust on the components. Dust particles that enter the indoor unit may cause fire.
· Do not move and re-install the Electric Heat Kit yourself. Any deficiency caused by the installation may result in electric shock or fire. Ask your distributor or special technical representative for moving and installation.
· This kit must be controlled exclusively through the use of CN24-1 and CN24-2 (2 stage models) connections on the indoor unit control board. Failure to do so may cause fire.

Specifications are subject to change without notice.

Electric Heat Installation Manual
6. Installing the Electric Heat Kit
6.1. Read the safety precautions section of the Multi-Position Air Handler before installing the electric heat option.
Remove the entire enclosure from the packaging and inspect for any possible damages. The following images in the installation section do not represent all electric heat options. Depending on the model, the number of circuit breakers might vary as well as the size of the enclosure. Always check the model number on the package and enclosure before continuing. Before continuing with the installation, be sure all power to the equipment that is being worked on is disconnected. Failure to do so could result in injury or death.
6.2. Setting Proper External Static Pressure
NOTE
Best design practice to assure adequate airflow requirements.
During electric heater operation, the fan is defaulted to high speed to help assure adequate airflow. To maintain adequate airflow required for electric heater operation, it is recommended that an additional 0.20 in. WG static pressure drop is added to system ductwork design when using the Electric Heat Kit. Examples: When air handler is set for 0.50 in. WG static, the maximum external static pressure for ductwork should not exceed 0.30 in. WG. When air handler is set for 0.80 in. WG static, the maximum external static pressure for ductwork should not exceed 0.60 in. WG, etc.

Specifications are subject to change without notice.

Electric Heat Installation Manual
6.2.1. PVFY-A·NAMU-E(1) Models
The external static pressure cannot exceed 0.60 in. WG for any position installation when an electric heat kit is installed on the Multi-Position Air Handler.
The static pressure setting for any PVFY-A·NAMU models is set to 0.50 in. WG from the factory. If an Electric Heat Kit is installed and the static pressure exceeds 0.50 in. WG, it is extremely important that SWA is set to the "3" position.

0.3 in. WG (75 Pa)
0.5 in. WG (125 Pa)

0.6 in. WG (150 Pa)

Notes: For Installation above 0.50 in. WG External Static Pressure Switch A will be in the "3" position

For vertical, horizontal right or horizontal left installations SWC, will remain in the default "1" position. When the Multi-Position Air Handler is installed in a downflow configuration, SWC will need to be changed to "2" position.

Horizontal Right, Horizontal Left,
Vertical

Downlow

Specifications are subject to change without notice.

Electric Heat Installation Manual
6.2.2. MVZ-A·AA4(7), SVZ-KP-NA and PVA-A·AA4(7) Models
The external static pressure cannot exceed 0.60 in WG for any position installation when an Electric Heat Kit is installed on the Multi-Position Air Handler.
The static pressure setting for any MVZ-A·AA4(7), SVZ-KP-NA and PVA-A·AA4(7) models are set to 0.50 in. WG from the factory. If an Electric Heat Kit is installed and the static pressure exceeds 0.50 in. WG, it is extremely important that Mode/Function 08/108 is set to "3".
The table below explains the proper settings for Mode/Function 08/108 and 10/110 for vertical, horizontal left and horizontal right installations.

0.6 in. WG (150 Pa)

Notes: For installation above 0.50 in. WG External Static Pressure

6.2.3. MVZ-A·AA4(7) and PVA-A·AA4(7) Models
For downflow installations, the following table explains the proper settings for Mode/Function 08/108 and 10/110. Again, the external static pressure in the downflow configuration cannot exceed 0.60 in WG.

0.6 in. WG (150 Pa)

Notes: For installation above 0.50 in. WG External Static Pressure

Specifications are subject to change without notice.

Electric Heat Installation Manual
6.3. Enabling Electric Heat
6.3.1. PVFY-A·NAMU-E(1) Models
When installing the Electric Heat Kit on PVFY-A·NAMU-E models, Switch 3-4 on the control board inside the Multi-Position Air Handler must be "ON". When installing the Electric Heat Kit on PVFY-A·NAMU-E1 models, Switch 3-2 on the control board inside the Multi-Position Air Handler must be "ON". This activates the electric heat option.

SW 3-4 ON OFF
SW 3-2 ON OFF

For PVFY-A·NAMU-E models ONLY

For PVFY-A·NAMU-E1 models ONLY

The Electric Heat has two methods of operation. By default the stage or stages of heat work based on a difference in set point to actual space temp. Also depending on the model, there is a time element added to prevent the heater from coming on if the heat pump can manage the load. See section 6.4 for explanations for each model.
The second method is based on outside air temp where the electric heater can be locked out above a certain outside temp and the heat pump can be locked out below a certain outside temp and only the electric heat will be used. Below is an example. This method requires the use of the maintenance tool software. Please consult your dealer or an authorized technician who has and is properly trained in its use.

NOTE
For PVA-A·AA4(7), MVZ -A·AA4(7) and SVZ-KP-NA models, Electric Heat Lockout is available as a separate accessory. See accessory, ETC-211020-MIT.

Specifications are subject to change without notice.

Electric Heat Installation Manual

6.4. Operation Mode

6.4.1. PVFY-A·NAMU-E, PVA-A·AA4, and MVZ-A·AA4 Models
The operation of the Electric Heat Kit can be set for different modes, Comfort or Energy-Save mode. PVFY-A·NAMU-E models will be set by SW3-4 and SW3-2 according to below. PVA-A·AA4 and MVZ-A·AA4 models will be set by mode 23 and mode 11.

PVFY-A·NAMU-E models (Installed with PUHY, PURY, PQHY or PQRY)

PVFY-A·NAMU-E models (Installed with PUMY)

MVZ-A·AA4 and PVA-A·AA4 models

Specifications are subject to change without notice.

Electric Heat Installation Manual

6.4.2. PVFY-A·NAMU-E1, PVA-A·AA7, MVZ-A·AA7 and SVZ-KP-NA Models
The operation of the Electric Heat Kit is shown in the table below. See the indoor unit service manuals for more information.

Electric Heat Kit

Mode Change

(To -TRA) > 2.7 ° F
[1.5 °C]

TRA has not

increased by EH1 ON for

AND

0.9 °F [0.5° C] > Y min

in X min

EH1 ON

AND

EH2 ON

AND

EH1 OFF

EH2 OFF
KEY · EH1: Electric Heater 1 · EH2: Electric Heater 2 · To: Set point temperature · TRA: Return Air temperature · X: Time delay (Selectable. See the indoor unit service manuals for more information.) · Y: Time delay (Non-Selectable. See the indoor unit service manuals for more information)

(To -TRA) > 2.7 ° F [1.5 ° C]

TRA has not increased by

(To -TRA) <

AND

0.9 °F

0.9 ° F [0.5° C]

[0.5° C]

in Y min

AND

The igure below shows an example of electric heater operation. See the indoor unit service manuals for more information.

To To - 0.9 °F [0.5 °C] To - 2.7 °F [1.5 °C]

TRA

X min

> Y7

min

EH1

OFF

EH2

OFF

Step

(To -TRA) > 2.7 °F [1 .5 °C]

(To -TRA) < 2.7 °F [1.5 °C]

(To -TRA) < 0.9 °F[0.5°C]
( To -TRA) > 2.7 ° F [1.5 °C]
(To -TRA) > 2.7 °F [1.5 °C]

(To -TRA) < 0.9 °F [0.5 °C]

Condition

AND

TRA has not increased by 0.9 °F [0.5°C] in X min

AND

TRA increasing faster than 0.9 °F [0.5°C] in Y min

AND
AND

TRA has not increased by 0.9 °F [0.5°C] in X min TRA not increasing faster than 0.9 °F [0.5°C] in Y min

Result EH1 ON EH2 not ON EH1 OFF EH1 ON EH2 ON
EH1 OFF EH2 OFF

Specifications are subject to change without notice.

Electric Heat Installation Manual
6.5. Attaching the Enclosure to the Air Handler
6.5.A. Remove the front cover as well as the heater section of the heater enclosure. The heater section is secured by (5) screws. Use a 5/16" hex socket or Phillips screw driver for all screws.

FRONT COVER

HEATER ENCLOSURE

HEATER SECTION

6.5.B. Remove the (4) pieces of foam insulation from the outlet flange on the Multi-position Air Handler and cut the remaining foam so there are no obstructions in the outlet opening.
Also, remove the top (2) knockouts from the air handler and install the two grommets included in the Electric Heat Kit accessory bag in the air handler.

Remove (4) pieces of insulation from supply duct

Remove (2) knockouts Install (2) provided grommets

PVFY/PVA/MVZ

SVZ

Specifications are subject to change without notice.

Electric Heat Installation Manual

6.5.C. Locate the rear flange of the supply side of the Multi-position Air Handler.

Rear lange of supply side

SVZ PVFY/PVA/MVZ
6.5.D. Locate the angled tab that will secure the enclosure to the top of the Multi-position Air Handler. On the bottom of the enclosure toward the back is the tab. Notice the gap between the angled tab and the back of the enclosure. This is extremely important for installation.
Angled Tab

Insert rear flange of air handler's supply into the gap at the back of the electric heat enclosure

Bottom of Electric Heat Enclosure

Detail A

Detail(0.500) Rear flange

Specifications are subject to change without notice.

Electric Heat Installation Manual
6.5.E. Position the enclosure on top of the air handler so that the rear flange is inserted into the gap explained in step 6.5.D. Next, slide the heater enclosure back so that it is flush with the rear of the air handler. The angled tab on the electric heat enclosure slides under the air handler's rear flange on the supply side.

PVFY/PVA/MVZ

SVZ
Heater enclosure will be flush with air handler cabinet

Angled tab on electric heat enclosure slides under the air
handler's rear flange on the supply side

Air handler supply side

6.5.F. Next, install the (2) M5 silver screws which are included in the accessory bag. This secures the electric heat enclosure to the air handler.

PVFY/PVA/MVZ
Specifications are subject to change without notice.

SVZ
19

Electric Heat Installation Manual 6.5.G. From the back of the enclosure, install the (2) brackets which are included in the accessory bag. The four screws shown can be loosened on the heater enclosure and air handler. Slide the brackets onto the loosened screws and retighten the screws.
Installed brackets

Specifications are subject to change without notice.

Electric Heat Installation Manual

6.5.H. Reinstall the heater section into the heater enclosure. When inserting the heater section into the heater enclosure, be sure the frame rods are inserted into the holes provided in the heater enclosure to properly support the heater section. Secure the heater section to the heater enclosure with the (5) screws removed earlier. Next, for MVZ, PVA & PVFY, remove the electric panel from the air handler to expose the electrical boards. For SVZ, remove "BLOWER" panel to expose the electrical boards.

FramFreamSeuSpupppoorrt t

Frame Support

Reinstall the Heater Section into the Heater Enclosure. When inserting the Heater Section into the Heater Enclosure, be sure the frame rods are inserted into the holes provided in the Heater Enclosure to properly support the Heater Section. Secure the Heater Section to the Heater enclosure with the (5) screws removed earlier. Next, remove the Electric Panel and inner panel from the Air Handler to expose the electrical boards.

PVFY/PVA/MVZ

Electrical panel removed to expose control boards

SVZ

Filter and blower panel removed to expose control boards

The frame of the heater will insert into
thTehheolefrianmtheeboacf kthofethheeealetcetrricwheilal tinsert into etnhceloshuroel.eTihnistphreovbidaescpkroopferthsueppeolertctric heat foernthceloelseuctrreic.hTeahteisr. provides proper support for the electric heater

SVZ
Speciications are subject to change without notice.

Electric Heat Installation Manual
6.5.I. Connect the appropriate spade terminals to the proper relay and route the supplied wires labeled "HTR STAGE 1 ASSY CN24-1" and "HTR STAGE 2 ASSY CN24-2" as shown below through the grommets and connect to the correct connector on the board. They are labeled and colored (Yellow for CN24-1 and Blue for CN24-2). SVZ ONLY: the wiring to connect the SVZ to the Electric Heater Kit is included inside the cabinet of the SVZ. Remove the coil panel, the wiring is bundled in the top right corner of the cabinet. Cut the tie that secures the bundle and route the wiring into the electric heat cabinet through the grommets. Connect the appropriate spade terminals to the relays inside the Electric Heat Kit. The other end of the wiring will be bundled under the electrical box in the blower compartment. Loosen the bundle, route the wire into the bottom of the electrical box and connect to the correct connector on the control board. They are labeled and colored (Yellow for CN24-1 AND BLUE for CN24-2).

NOTE
3kW and 5kW models are single stage and will only require connection to one relay labeled CN24-1 in the Electric Heat Kit and one connector labeled CN24-1 on the control board.

Connect the 2 spade terminals here for "HTRCoSnnTecAt thGe 2Espad1e tAermSinaSls YhereCforN24-1"
"HTR STAGE 1 ASSY CN24-1"
(Not pol(aNortiptoylaridty edeppenedenntd) ent)

Connect the 2 spade terminals here for
"HTR STAGE 2 ASSY Connect the 2 spade terminals here for CN24-2" "HTR STAGE 2 ASSY CN24-2"
((NNoot potlaprityodleapernidteynt) dependent)

Specifications are subject to change without notice.

Electric Heat Installation Manual 6.5.J. Locate the appropriate knockout based on the wire size and installation position and remove.

NOTE
POWER FOR ELECTRIC HEATERS CAN NOT BE SUPPLIED FROM THE OUTDOOR UNIT. POWER FOR THE ELECTRIC HEATER MUST BE SUPPLIED FROM A SEPARATE POWER SOURCE.

Follow all local codes when connecting to the air handler, use only copper/aluminum conductors and use the appropriate conduit size based on the amperage of the Electric Heat Option found in Table 3-2.

Available knockouts

Available Availablekknnoockcokutos uts

Available knockouts

Available
Available knockouts
knockouts

Available knockouts

PVFY/PVA/MVZ

SVZ

Specifications are subject to change without notice.

Electric Heat Installation Manual
6.5.K. Power can be provided to the Multi-Position Air Handler from the Electric Heat Kit by providing power from the two open terminal connections on the circuit breaker. For PVFY-A·NAMU-E(1) models incoming power to air handler will terminate at L1 and L2. For MVZ-A·AA4(7), SVZ-KP-NA and PVA-A·AA4(7) models, the SPTB1 terminal kit must be installed in the Multi-position Air Handler if the air handler will receive power from the Electric Heat Kit. Please refer to SPTB1 instructions for proper power connection. AA
A

SVZ PVFY/PVA/MVZ

Detail A

USE THE (2) OPEN TERMINAL CONNECTIONS ON THE
CUIRsCeUITthBReEA(2KE)RoTpOePnOWtEeRrmTHiEnAaIRl HcAoNnDnLEeRc. tOioNnE s on OtNheL1 cANirDcOuNitE bFOreRaL2k. er to power the air handler. One on L1 and one for L2.

Specifications are subject to change without notice.

Electric Heat Installation Manual
6.5.L. For Electric Heat Kits with two circuit breakers, follow the instructions below: Install the foam insulation provided in the electric heater according to the position of the circuit breakers. For vertical, horizontal right, and downflow positions, install the foam insulation piece as shown below in the first image. For horizontal left installations, see the second image. For horizontal left installations, the circuit breaker must be rotated 180°, see section 6.7 for "Rotating circuit breaker orientation for horizontal left installations".

VERTICAL, HORIZONVTEARTLICARL,IHGOHRIZTONATANL RDIGHDTOANWD DNOWFNLFLOOWW

INSTALLATIONS

HORIZONTAL LEFT INSTALLATIONS HORIZONTAL LEFT INSTALLATIONS

Specifications are subject to change without notice.

Electric Heat Installation Manual
6.6. Proper Support in the Horizontal Position for the MultiPosition Air Handler with Electric Heat Kit
For horizontal installations providing proper support to the air handler and Electric Heat Kit, enclosure ensures an airtight installation. If improper support is provided under the electric heat enclosure, the weight of the ductwork attached to the electric heat enclosure could cause separation between the electric heat enclosure and the air handler resulting in capacity loss.
PROPERLY SUPPORT THE ELECTRIC HEAT ENCLOSURE
PWrHoEpNerINlySsTAuLpLpEoDrtINthTeHEeHleOcRtrIiZcOhNeTAaLt eCnOcNlFoIsGuUrReATION when installed in the horizontal coniguration

Specifications are subject to change without notice.

Electric Heat Installation Manual
6.7. Rotating Circuit Breaker Orientation for Horizontal Left Installations
For horizontal left installations, the circuit breaker(s) must be rotated 180° for proper switch direction for ON/OFF. 6.7.A. Remove the cover and single point power block (for electric heat models above 10kW) from the two circuit breakers.
6.7.B. Remove the electric heat from the enclosure.
6.7.C. Remove the circuit breaker(s) from the support bracket by pulling the tab in the direction shown. Use a flat head screwdriver to push the plastic tab to release the circuit breaker from the bracket.
Move the tab in the direction shown to remove
the circuit breaker.
6.7.D. Reassemble in the reverse orientation. Use extreme caution when re-routing the wires connected to the Circuit Breaker(s). The "ON" position for the circuit breaker will now be in the correct orientation for horizontal left installation.

Specifications are subject to change without notice.

Electric Heat Installation Manual
7. Electrical Schematics
7.1. PVFY-A·NAMU-E(1) Models
5.1 PVFY-A·NAMU-E(1) Models

CN24-1

Electric Heat Model: EH03-MPA-S(B), EH05-MPA-S(B), EH03-MPA-M(B), EH05-MPA-M(B) 1 stage; 3 or 5kW
NOTE
Use copper or aluminum conductors only. -- - - -- - - -- Field Supplied Wiring Electric Heater Module installed directly on top of air handler.

Specifications are subject to change without notice.

Electric Heat Installation Manual

CN24-1 CN24-2

Electric Heat Model: EH08-MPA-S(B), EH08-MPA-M(B), EH10-MPA-M, EH10-MPA-L(B) 2 stage; 8 or 10kW
NOTE
Use copper or aluminum conductors only. -- - - -- - - -- Field Supplied Wiring Electric Heater Module installed directly on top of air handler.

Specifications are subject to change without notice.

Electric Heat Installation Manual

15 or 17.5 kW

Electric Heat Model: EH15-MPAS-L(B) EH17-MPAS-L(B) 2 stage; 15 or 17.5kW
NOTE
Use copper or aluminum conductors only. -- - - -- - - -- Field Supplied Wiring Electric Heater Module installed directly on top of air handler.

CN24-1 CN24-2

Specifications are subject to change without notice.

Electric Heat Installation Manual
7.2. MVZ-A·AA4(7), SVZ-KP·NA and PVZ-A·AA4(7) Models
5.2 MVZ-A·AA4(7) and PVZ-A·AA4(7) Models

CN24-1

PVA/MVZ/SVZ Multi-position Air Handler Electric Heat Model: EH03-MPA-S(B), EH05-MPA-S(B), EH03-MPA-M(B), EH05-MPA-M(B) EH03-SVZ-S, EH05-SVZ-S, EH05-SVZ-M 1 stage; 3 or 5kW
NOTE
Use copper or aluminum conductors only. -- - - -- - - -- Field Supplied Wiring Electric Heater Module installed directly on top of air handler.

Specifications are subject to change without notice.

Electric Heat Installation Manual

CN24-1 CN24-2

PVA/MVZ/SVZ Multi-position Air Handler Electric Heat Model: EH08-MPA-S(B), EH08-MPA-M(B), EH10-MPA-M, EH10-MPA-L(B) EH08-SVZ-S, EH08-SVZ-M, EH10-SVZ-M 2 stage; 8 or 10kW
NOTE
Use copper or aluminum conductors only. -- - - -- - - -- Field Supplied Wiring Electric Heater Module installed directly on top of air handler.

Specifications are subject to change without notice.

Electric Heat Installation Manual

15 or 17.5 kW
CN24-1 CN24-2

PVA Multi-position Air Handler Electric Heat Model: EH15-MPAS-L(B) EH17-MPAS-L(B) 2 stage; 15 or 17.5kW
NOTE
Use copper or aluminum conductors only. -- - - -- - - -- Field Supplied Wiring Electric Heater Module installed directly on top of air handler.

Specifications are subject to change without notice.

Electric Heat Installation Manual
7.3. MVZ-A·AA4(7), SVZ-KP-NA and PVZ-A·AA4(7) Models with Separate Power Terminal Block (SPTB1)

CN24-1

PVA/MVZ/SVZ Multi Position SPTB1 - Separate Power Terminal Block Electric Heat Model: EH03-MPA-S(B), EH05-MPA-S(B), EH03-MPA-M(B), EH05-MPA-M(B) EH03-SVZ-S, EH05-SVZ-S, EH05-SVZ-M 1 stage; 3 or 5kW
NOTE
Use copper or aluminum conductors only. -- - - -- - - -- Field Supplied Wiring Electric Heater Module installed directly on top of air handler.

Specifications are subject to change without notice.

Electric Heat Installation Manual

CN24-1 CN24-2

PVA/MVZ/SVZ Multi Position SPTB1 - Separate Power Terminal Block Electric Heat Model: EH08-MPA-S(B), EH08-MPA-M(B), EH10-MPA-M, EH10MPA-L(B) EH08-SVZ-S, EH08-SVZ-M, EH10-SVZ-M 2 stage; 8 or 10 kW
NOTE
Use copper or aluminum conductors only. -- - - -- - - -- Field Supplied Wiring Electric Heater Module installed directly on top of air handler.

Specifications are subject to change without notice.

Electric Heat Installation Manual

15 & 17.5 kW
CN24-1 CN24-2

PVA Multi Position SPTB1 - Separate Power Terminal Block Electric Heat Model: EH15-MPAS-L(B) EH17-MPAS-L(B) 2 stage; 15 or 17.5kW
NOTE
Use copper or aluminum conductors only. -- - - -- - - -- Field Supplied Wiring Electric Heater Module installed directly on top of air handler.

Specifications are subject to change without notice.

This product is designed and intended for use in the residential, commercial and light-industrial environment.

Manufactured for:
MITSUBISHI ELECTRIC US, INC.
www.mitsubishielectric-usa.com Toll Free: 800-433-4822

Electric heat install manual MD-1404-K055 Ver. 3, July 2023 Specifications are subject to change without notice.

References

MITSUBISHI ELECTRIC UNITED STATES

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