Daikin IM 972-1 3
Introduction
Introduction
General
This manual contains the installation and operating
instructions for your packaged rooftop system. There are some
precautions that should be taken to derive maximum
satisfaction from it. Improper installation can result in
unsatisfactory operation or dangerous conditions.
Read this manual and any instructions packaged with separate
equipment prior to installation. Give this manual to the owner
and explain its provisions. The owner should retain this
manual for future reference.
Checking Product Received
Upon receiving the unit, inspect it for any damage from
shipment. Claims for damage, either shipping or concealed,
should be filed immediately with the shipping company.
IMPORTANT: Check the unit model number, heating size,
electrical characteristics, and accessories to determine if they
are correct.
This
product line does have an optional DDC controller.
For operation and information on using and programming the
MicroTech II unit controller, refer to the appropriate operation
manual (see Table 1).
For a description of operation and information on using the
keypad to view data and set parameters, refer to the
appropriate program-specific operation manual (see Table 1).
Safety Information
Major Components
The unit includes a hermetically-sealed refrigerating system
consisting of a scroll compressor, condenser coil, evaporator
coil with capillary tube assembly, a supply air fan, a condenser
fan, a heat exchanger assembly, gas burner and control
assembly, combustion air motors and fan, and all necessary
internal electrical wiring. The cooling system of these units is
factory-evacuated, charged and performance tested.
Refrigerant amount and type are indicated on rating plate.
The unit is available in 250,000 AND 350,000 BTUH heating
input with nominal cooling capacity of 15 tons. 300,000 and
400,000 BTUH heating inputs are available in nominal cooling
capacity of 20 and 25 tons. Units are convertible from bottom
supply and return to side supply and return by relocation of
supply and return air cover panels. The units are weatherized
for mounting outside of the building.
Table 1: Operation, Installation and Maintenance
Resources
Unit Manual
Rooftop unit control configuration
Operation manual bulletin
number
DDC Unit Controller OM 1077
BACnet Communication Module IM 1000
LonWorks Communication Module IM 999
DANGER
The manufacturer’s warranty does not cover any damage or
defect to the air conditioner caused by the attachment or use
of any components, accessories or devices (other than those
authorized by the manufacturer) into, onto, or in conjunction
with the air conditioner. you should be aware that the use of
unauthorized components, accessories or devices may
adversely affect the operation of the air conditioner and may
also endanger life and property. The manufacturer disclaims
any responsibility for such loss or injury resulting from the use
of such unauthorized components, accessories or devices.
WARNING
Provide adequate combustion and ventilation air to the unit
space as specified in the combustion and ventilation air
section of these instructions.
WARNING
Install this unit only in a location and position as specified in
the Mechanical Installation section of these instructions.
Provide adequate combustion and ventilation air to the unit
space as specified in the venting section of these instructions.
WARNING
Combustion products must be discharged outdoors. Connect
this unit to an approved vent system only, as specified in
Mechanical Installation section of these instructions.
WARNING
Use only with type of gas approved for this unit. Refer to the
unit rating plate.
DANGER
Never test for gas leaks with an open flame. It can cause an
explosion or fire resulting in property damage, personal injury
or death. Use a commercially available soap solution made
specifically for the detection of leaks to check all connections,
as specified in the Mechanical Installation section of these
instructions.
WARNING
Always install unit to operate within the unit's intended
temperature-rise range with a duct system which has an
external static pressure within the allowable range, as
specified in the Mechanical Installation section of these
instructions. See also unit rating plate.
DANGER
Units are not design certified to be installed inside the
structure. Doing so can cause inadequate unit performance
as well as property damage and carbon monoxide poisoning
resulting in personal injury or death.
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