Panasonic MVA Series Air Handling Unit Mva18 24 30 36 42 48 60 Fbas6hbcp Installation Operation And Maintenance Manual

035-000039-001 Page 1 of 32 MVA IOM 1.3 9-10-2014
MVA Series units are direct drive vertical and
multi-position Air Handlers delivering nomi-
nal cooling capacities of 1.5 to 5 tons.Units
may be specified with hot water or electric heat-
ing coils to meet space cooling loads or heating
loads or both. Two styles of unit orientation are
available for maximum flexibility.
How to Use this Manual:
This manual gives instructions regarding in-
stallation, operation and maintenance for the
MVA Series air...

035-000039-001 Page 2 of 32 MVA IOM 1.3 9-10-2014
THIS PAGE INTENTIONALLY LEFT BLANK 

035-000039-001 Page 3 of 32 MVA IOM 1.3 9-10-2014
/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 -installa tion8
Rigging8
Unpa cka ging8
Service Clea ra nce s8,11
Return Air & Unit Orie nta tion9
Vertica l to Horizonta l Conve rsion (EEV)10
Unit Suspe nsion or Floor Mount8,12,13
Conde nsa te Dra in12
Ductw ork12
Refrige ra nt Piping14
Ele...

035-000039-001 Page 4 of 32 MVA IOM 1.3 9-10-2014
THIS PAGE INTENTIONALLY LEFT BLANK 

035-000039-001 Page 5 of 32 MVA IOM 1.3 9-10-2014
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...

035-000039-001 Page 6 of 32 MVA IOM 1.3 9-10-2014
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
Future Use Description
Code Selection
08A
Unit Grade Description
Code Selection
09S
Future Us e
Standard
04, 05
18,000 Btu/hr
24,000 Btu/hr
36,000 Btu/hr
60,000...

035-000039-001 Page 7 of 32 MVA IOM 1.3 9-10-2014
Unit Voltage
CodeSelection
106
Controls
CodeSelection
11 H
Return Air Cabinet Options
Ordering Number
CodeSelectionReturn Location
BBottom Return
Drain Pan
CodeSelection
C
Tracking Description
CodeSelection
14P
Unit Orientation
Internal Us e
12
Description
drain pan and cabinet insulation type
13Fiberglas s , Univers al Drainpan - Galvanized
Vert ic al (F ro nt RH Co ndD rain C nx) o r Ho rizo nt alR ight
Description
208/230/1/60 ECM-VE(customer change...

035-000039-001 Page 8 of 32 MVA IOM 1.3 9-10-2014
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...

035-000039-001 Page 9 of 32 MVA IOM 1.3 9-10-2014
INSTALLATION
Figure 1
Return Configurations and
Unit Orientations
NOTE:
Electronic Expansion Valve (EEV)
must be oriented vertically, and is
shipped for vertical cabinet orienta-
tion.
For horizontal cabinet orientation,
follow procedure to rotate the EEV
assembly.Refer to Figure 2.
WARNING
FOR HORIZONTAL CABINET ORIEN-
TATION, EEV MUST BE ROTATED TO
VERTICAL POSITION! Failure to reori-
ent the EEV can result in improper
unit operation or equipment...

035-000039-001 Page 10 of 32 MVA IOM 1.3 9-10-2014
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...