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2.5
MOTORS
General: Condenser fan motors shall be as described above (Section 2.3, subsection J). Blower
motor shall be energy-efficient [ODP][TEFC]and comply with EPACT standards for single speed
ODP and TE enclosures. Motor shall be heavy-duty, permanently lubricated type to match the fan
load and furnished at the specified voltage, phase and enclosure. Drives shall be sized for a
minimum of 150% of driven horsepower and pulleys shall be fully machined cast-type, keyed and
fully secured to the fan wheel and motor shafts. Electric motors of ten horsepower or less shall be
supplied with an adjustable drive pulley. Comply with requirements in Division 23 05 13, matched
with fan load. Motors shall be
volts] [60 cycle, 3 phase 460 volt].
2.7
UNIT CONTROLS:
otherwise configured to be controlled by an owner-supplied building controller, the MAU must be
ordered with a microprocessor controller. See IOM / Controls
that it can function as a stand-alone cooling system controlled by factory-supplied controllers,
thermostats and sensors or it can be operated as a cooling system controlled by a Building
Management System (BMS). This Makeup Air unit shall be controlled by a factory-installed
microprocessor programmable controller that is connected to various optional sensors that may
have either analog or digital output.
1.
A Microprocessor Controller known as a DDC shall be capable of receiving and
amplifying either digital or analog inputs from internal sensors or from a BMS. The
DDC shall be equipped with a large LCD display showing operating states, owner
specified settings and alarm conditions. Owner-specified ventilating conditions can
be input by means of pushbuttons. [RoomTemperature sensors][DDC Remote
Interface (room display)] The DDC shall have 4 MB flash memory capacity, pre-set
for a programming key, shall be modem/modem GSM/SMS ready, have 5 analog
inputs, 2 PT1000 inputs, 3 each 0 to 10 VDC inputs, 3 each 0 to 20 ma inputs, 5
NTC inputs, 3 each 0 to 5 VDC ratiometric inputs, AIN setting by software, 8 digital
inputs, 2 contact points, 8 each 24 VDC/VAC inputs, 4 analog outputs, 8 each
digital outputs, 7 SPST relay outputs, 1 SPDT relay outputs and 2 SSR outputs.
2.
Operating protocol: The DDC shall be factory-programmed for (LonWorks][BACnet
MSTP][BACnet IP][Modbus].
3.
[Variable Frequency Drive (VFD)][MAU shall have factory installed variable
frequency drive for modulation of the Supply Air blower assembly
The following devices are all optionally available for installation in the field. For
further information on specific devices, see the IOM: Field installed Control Sensors
4.
[DDC Room Interface: Contractor shall provide and install
display(s) that function as remote indicators of owner-selected operating
parameters and also permit remote input of new operating parameters. Each room
display unit shall have a large LCD user interface screen similar in form and
function to the screen on the DDC. Installed location of room display(s) shall be as
indicated on the plans.]
5.
[Dehumidistat: Contractor shall provide and install a dehumidistat as indicated on
the plans.]
6.
[Room / Space Temperature Sensors: Contractor shall provide and install a room
temperature sensor as indicated on the plans]
7.
[Dirty filter sensor]
8.
[CO2 Sensor: Contractor shall provide and install a CO2 sensor as indicated on
the plans]
9.
[Fire Stat Type III: Contractor shall provide and install a Type II Fire Stat as shown
on the plans]
10. [Industrial Remote Panel: Contractor shall provide and install a remote panel that
displays unit operating conditions and has enabling switches for system functions.
Remote panel is to be installed as shown on the plans. [Remote panel shall have a
DDC Room Display built in to provide for remote inputting of operating
parameters]]See IOM: Field Installed Control Sensors / Remote Operating Panel.
Product Specifications: Packaged Outdoor Heating and Cooling Make-Up Air Conditioners with Packaged DX (08/10)
Copyright © 2010 Greenheck Fan Corporation
Select one
[60 cycle, 3 phase 208 volts] ,60 cycle, 3 phase 230
Other than when a unit is retrofitted into an existing building control system or
Specify protocol.
Note: only one room display per MUA is available.
The MAU shall be constructed so
Indicate quantity
room
Page 6 of 7
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