7
Unitary Air Handler DX and Hydronic Series
6720220327
Revised 11-11 Subject to change without prior notice
WARNING
indicates possible severe personal injury.
DANGER
indicates possible risk to life.
Important information
Notes contain important information in cases
where there is no risk of personal injury or material
losses and are identified by the symbol shown on
the left. They are bordered by horizontal lines
above and below the text.
lOCAtION
Locate the unit in an indoor area that allows easy
general maintenance. The following issues should be
considered when locating the air handler:
1. Allow sufficient room for the removal of the filter
and access panels, and has enough room for
service personnel to perform maintenance or
repair. At least 30” clearance on the front side
should be provided.
2. Provide sufficient room to make fluid, electrical,
and duct connection(s).
3. If the unit is located in a confined space such as
a closet, provisions must be made for return air
to freely enter the space.
4. On horizontal units, allow adequate room below
the unit for a condensate drain trap and do not
locate the unit above supply piping.
5. When the coil is installed in a draw-thru
application, it is recommended to trap the
primary and secondary drain line. If the
secondary drain is not used, it must be capped.
6. The cabinet will sweat when unit is installed in a
non-conditioned space such as an attic or
garage. Installer must provide protection such as
full size auxiliary drain pan on all units installed
in a non-conditioned space to prevent damage
from condensation runoff. It is also
recommended that the unit be completely
insulated on the exterior with at least 1” thick
fiberglass insulation with the vapor barrier on
the outside.
These units are not approved for outdoor
installation; therefore, they must be installed inside
the structure being conditioned. Do not locate in
areas that are subject to freezing.
Caution
If electric heat is used, a minimum clearance of 1”
must be maintained on all sides of the supply air
duct and/or plenum continuously for up to 3’.
INStAllAtION/OPERAtION SAfEtY
RUlES
1. Read these rules and instructions carefully.
Failure to follow these rules and the installation
instructions could cause a malfunction of the unit,
and a possible safety hazard. Keep these
instructions nearby the unit for future reference.
2. While this unit has been designed and
manufactured to comply with National codes, it
is the installer’s responsibility to install this unit
to comply with National codes and/or prevailing
local codes and regulations. BOSCH Group
assumes no responsibility for units installed in
violation of any code or regulation.
3. Before servicing, disconnect all electrical
connections allow unit to cool. Components
may be hot.
Caution
WARNING: ALWAYS SHUT OFF ELECTRICITY
WHEN WORKING ON UNIT.
This will prevent any electrical shocks or burns.
4. Ground the unit to prevent electric shock. All
electrical wiring should be in accordance with
the National Electric Code.
5. Duct work must be installed in accordance with
the standards of the National Fire Protection
Association (NFPA) for the installation of Air
Conditioning, Warm Air Heating and Ventilating
Systems (NFPA 90A and 90B). Duct work in
non-conditioned spaces must be insulated to
prevent formation of condensate and for
maximum efficiency.
6. The safety testing agency label appearing on
these units covers the unit and factory installed
coil (if provided) only. It does not cover any
other equipment. Exterior surface of cabinet
may sweat when units is installed in a non-
conditioned space such as an attic or garage.
Installer must provide protection such as full
size auxiliary drain pan on all units installed in a
location
