Panasonic Mva Series Air Handling Unit 035 000039 001 Installation Operation And Maintenance Manual

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MVA Series units are direct drive vertical
and multi-position Air Handlers delivering
nominal cooling capacities of 1.5 to 5 tons.
Units may be specified with hot water or elec-
tric heating coils to meet space cooling loads
or heating loads or both. Three return air con-
figurations are available for maximum flexibil-
ity.
How to Use this Manual:
This manual gives instructions regarding in-
stallation, operation and maintenance for the
MVA Series air...

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/ŶƐƚĂůůĂƟŽŶ͕^ƚĂƌƚ-Up
and Service
/ŶƐƚƌƵĐƟŽŶƐ
MVA Series Air Handling Unit
Installation, Operation and Maintenance
Manual
Topic Page
SAFETY CONSIDERATIONS1, 5
PRODUCT NOMENCLATURE6-7
UNPACKING8
INSTALLATION8
Pre -insta lla tion8
Rigging8
Unpa cka ging8
Se rvice Cle a ra nce s8,11,12
Re turn Air & Unit Orie nta tion9
Ve rtica l to Horizonta l Conve rsion (EEV)10
Unit Suspe nsion or Floor Mount8,13,14
Conde nsa te Dra in13
Ductw ork13
Re frige ra nt...

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WARNING
CHECK the assembly and component weights to
be sure that the rigging equipment can handle
them safely.
Note also, the centers of gravity and any specific
rigging instructions.
CHECK for adequate ventilation so that fumes will
not migrate through ductwork to occupied spaces
when welding or cutting inside air-handling unit
cabinet or plenum.
WHEN STEAM CLEANING COILS be sure that
the area is clear of personnel.
DO NOT attempt to handle access covers...

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PRODUCT NOMENCLATURE
Unit Type/Size
Code Selection
01, 02 MV
Generation/Series
Code Selection
03 A
Unit Type/Size
Code Selection NOM Capacity
18
24
3030,000 Btu/hr
36
42
48
60
Primary Coil Type
Code Selection
06F4 ROW DX with electronic expans ion valve, R-410a
Heating Coil
Code Selection
B
C
D
E
F
G
H
I19.5 kW - s ingle phas e w/circuit breaker only * 1 s tage (s ize 42, 48, 60)
Notes: *
Future Use Description
Code Selection
08A
1. Electric Heat KW rated...

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Unit Grade Description
Code Selection
09S
Unit Voltage
Code Selection
106
Controls
Code Selection
11 H
Return Air Cabinet Options
Ordering Number
Code Selection Return Location
BBottom Return
RRight Return
LLeft Return
TBottom Return
Drain Pan
Code Selection
C
D
G
H
Tracking Description
Code Selection
14P
Vert ic al (Fro nt RH C o ndD rain Cnx)
Unit Orientation
H o rizo ntal Lef t o rVert ic al (F ro nt LHC o ndens at e D rain Cnx)
Panas onic
12
Note:...

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Pre-installation
1. Check items received against packing list.
2. Do not stack unit components or accesso-
ries during storage. Stacking can cause
damage or deformation.
3. If unit is to be stored for more than 2 weeks
prior to installation, observe the following
precautions:
a. Choose a dry storage site that is rea-
sonably level and sturdy to prevent un-
due stress or permanent damage to the
unit structure or components. Do not
store unit on vibrating...

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INSTALLATION
Figure 1
Return Configurations and
Unit Orientations
NOTE:
Electronic Expansion
Valve (EEV) must be ori-
ented vertically, and is
shipped for vertical cabi-
net orientation.
For horizontal cabinet
orientation, follow proce-
dure to rotate the EEV
assembly.Refer to Fig-
ure 2.
WARNING
FOR HORIZONTAL CABI-
NET ORIENTATION, EEV
MUST BE ROTATED TO
VERTICAL POSITION!
Failure to reorient the
EEV can result in im-
proper unit operation or
equipment...

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INSTALLATION—VERTICAL TO HORIZON-
TAL CONVERSION—EEV ROTATION
WARNING
FOR HORIZONTAL CABINET
ORIENTATION, EEV MUST
BE ROTATED TO VERTICAL
POSITION! Failure to reori-
ent the EEV in VERTICAL
position can result in improp-
er unit operation or equip-
ment damage or dangerous
condition.
CONVERSION PROCEDURE:
1. UNIT IS SHIPPED WITH NITROGEN
CHARGE. IF UNIT HAS ALREADY BEEN
CHARGED WITH REFRIGERANT, REMOVE RE-
FRIGERANT CHARGE PER LOCAL CODES BE-
FORE...