Hawki™ AHU Controller Installation Instructions

Hawki™ AHU Controller
Installation Instructions
DOC. #560404000
FCC Information
This device complies with Part 15 of the FCC rules. Operation is subject to the following
two conditions: (1) This device may not cause harmful interference, and (2) this device
must accept any interference received, including interference that may cause undesired
NOTE! This equipment has been tested and found to comply with the limits for
a Class B digital device pursuant to Part 15 of the FCC Rules. These
limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is
likely to cause harmful interference, in which case the user will be
required to correct the interference at his own expense.
Any changes or modifications not expressly approved by Novar
Controls Corporation could void your authority to operate this
Industry Canada
This digital apparatus does not exceed the Class B limits for radio noise emissions from
digital apparatus set out in the interference-causing equipment standard entitled Digital
Apparatus, ICES-003, of Industry Canada.
Cet appareil numérique respecte les limites de bruits radioélectriques applicables aux
appareils numériques de Classe B préscrites dans la norme sur le matériel brouiller:
Appareils Numériques, NMB-003, édictée par l’Industrie Canada.
LOGIC ONE® is a registered trademark of Novar Controls Corporation.
Lingo™ and Savvy™ are trademarks of Novar Controls Corporation.
The material in this manual is for information purposes only. The contents and the
product it describes are subject to change without notice. Novar Controls Corporation
makes no representations or warranties with respect to this manual.
In no event shall Novar Controls Corporation be liable for technical or editorial omissions
or mistakes in this manual, nor shall it be liable for any damages, direct or incidental,
arising out of or related to the use of this manual.
Copyright © 2001 by Novar Controls Corporation. All rights reserved.
No part of this manual may be reproduced in any form or by any means
without prior written permission from Novar Controls Corporation.
Novar Controls Corporation
3333 Copley Road, Copley, OH 44321
Tel: (330) 670-1010
Hawki™ AHU Controller Installation Instructions
The HawkiTM Air-Handling Unit (AHU) Controller is a direct digital control
module designed to control various configurations of built-up air-handling
systems, such as variable air volume, variable volume and temperature, dual
duct, multizone, etc. The Hawki communicates with Novar Control
Corporation’s Lingo™, Savvy™, or Executive Processor (EP/2), and other
controllers in the LOGIC ONE® Building Management System to provide
sophisticated control of a building’s equipment and processes.
The Hawki provides 11 analog inputs for sensor readings and 8 digital inputs for
contact closure signals. In addition, 6 analog outputs and 6 digital outputs are
provided for controlling system operations.
This document describes how to mount the unit, connect power and network
communications, wire the module, set the module address, and verify installation.
Agency Approvals
UL, Energy Management
Equipment UL-916:
Power Requirements
Input/Output Ratings
Analog Inputs:
Digital Inputs:
Analog Outputs:
Digital Outputs:
Listed Device: UL/CUL File #E90949
24 VAC, Class 2
15 VA
Two-wire shielded cable (Belden 8761, Novar
Controls WIR-1010, or equivalent).
24 VDC, 4 to 20 mA, Class 2
5 VDC, contact closure only
0 to 10 V, 1 mA maximum
24 V, 2 amp, pilot duty, Class 2
Special Circuits/Diagnostics
Communications RS-485:
Isolated to prevent ground loops.
Over-current Protection:
Protects against overloading current loop power
Surge Suppression:
All inputs/outputs protected against
lightning-induced surge or voltage transients.
Freeze Protection:
Outputs programmable to respond to a freeze
protection thermostat.
Smoke Alarm Input:
Outputs programmable to respond to varying
smoke conditions.
Doc. #560404000 3/8/01
Hawki™ AHU Controller Installation Instructions
Operating Environment
–40° to 158°F (–40° to 70°C.)
0 to 95% Relative, noncondensing
Physical Dimensions
9.5 inches
13.25 inches
2.44 inches
4.15 lb
Take the following precautions during installation:
Observe national and local electrical codes.
Observe voltage and current limits marked on the module.
Do not use the Hawki as a final safety device.
Do not connect 115 volts to any terminal on the module. The Hawki is a Class
2 (low voltage) control device.
Reduce the risk of electrical shock or fire. Do not interconnect the outputs of
different Class 2 circuits.
Removing the Enclosure
The cover of the Hawki’s enclosure must be removed before the other procedures
in this document can be performed.
Follow the steps listed below to remove the cover. There
are tabs on the bottom of the cover that could be damaged
if this procedure is not followed.
Doc. #560404000 3/8/01
Hawki™ AHU Controller Installation Instructions
Loosen the two screws on the top of the Hawki enclosure (Figure 1).
Figure 1.
Slide the top of the cover out from under the screws.
Slide the cover down so the tabs slide out of their slots on the
bottom of the baseplate (Figure 2).
Figure 2.
Doc. #560404000 3/8/01
Hawki module showing screws on top
Bottom view of the Hawki
Pull the cover down and away from the baseplate.
Hawki™ AHU Controller Installation Instructions
Mounting the Hawki
The Hawki should be mounted horizontally in a control panel or directly to a
wall. Be careful that the unit and the mounting hardware do not interfere with
proper operation of the Hawki. Refer to Figure 3 and follow the steps below to
install the Hawki.
Figure 3.
Mounting the Hawki
Turn off all power to the Hawki before proceeding with
Position the uncovered module against the mounting surface.
Mark the mounting surface to show the locations of the four
slotted holes in the unit (see Figure 3) to indicate where holes
should be drilled for the mounting screws.
Drill the holes where marked and, if necessary, install
hollow-wall anchors.
Insert screws into the four holes, leaving approximately
one-quarter inch between the mounting surface and the heads of
the screws.
Position the module over the screws and slide it down so all four
screws slide into the slots on the backplate of the module.
Tighten the screws until the module is flush with the mounting
Doc. #560404000 3/8/01
Hawki™ AHU Controller Installation Instructions
Wiring the Hawki Inputs
and Outputs
Figure 4 shows the wiring connections for the module. The function of each
connection is shown on the metal shield covering the circuit board’s electronics.
Wires can be run through the knockouts on the side of the enclosure or through
the wiring slot at the bottom of the module, between the cover and the backplate
(see Figure 2). The wiring slot is lined with a gasket to protect the wires.
Figure 4.
Hawki wiring connections
Analog Inputs
The wiring connections to the analog inputs are from 24 VDC, 4- to 20-mA,
current-loop sensors. The Hawki provides 11 analog input connections along
with 7 terminals for the current-loop voltage source (+) wiring. These
connections are Terminals 1 through 18.
Connect the wiring to the correct terminals as specified on the shield under
Analog Inputs. Follow the instructions included with the sensors for making the
proper wiring connections from the sensors.
NOTE! If the current loop is sourced at the sensor, connect the
positive (+) wire to the input point on the Hawki and the
negative (–) wire to one of the four corner screws that hold
the Hawki’s circuit board to the enclosure. These screws
are marked as GND (ground) on the circuit board. Do not
make a connection to the sensor’s Current Loop (+)
Doc. #560404000 3/8/01
Hawki™ AHU Controller Installation Instructions
Refer to Table 1 for information concerning the Novar Controls default scaling
ranges for these sensors’ connections. Sensors outside these ranges can be used,
but the sensor ranges must be recalled in the Novar Controls software. For more
information, refer to the Novar Controls Hawki AHU Controller Programming
and Monitoring Instructions (Doc. No. 560408000), available from any
authorized Novar Technology Center (NTC).
Table 1. Analog Input Default Scaling Ranges
Supply Duct Static Pressure
0 to 3 inches
Building or Mixed Air Static Pressure
–1 to +1 inches
Supply Fan Velocity
0 to 3 inches
Return Fan Velocity
0 to 3 inches
Return Air Humidity
0 to 100% relative humidity
Supply Air Humidity
0 to 100% relative humidity
CO2 Sensor
0 to 2000 parts per million
Outside Air Temperature
–40o to 120oF
Supply Air Temperature
20o to 170oF
Return Air Temperature
20o to 120oF
Mixed Air Temperature
20o to 120oF
Digital Inputs
The wiring connections to the digital inputs must be from dry contact closures.
The Hawki provides 8 digital input connections along with 4 common terminals
for connecting the other side of the digital signal wiring (any of the 4 common
terminals can be used by more than one digital signal). These connections are
Terminals 28 through 39.
Connect the wiring to the correct terminals as specified on the shield under
Digital Inputs.
For each contact closure input, one wire must be connected to the correct input
terminal and the other wire to one of the common terminals.
Analog Outputs
The Hawki provides 6 analog output connections that are 0 to 10 volts with 1-mA
maximum drive capability. The analog outputs, along with 3 common terminals,
are located at Terminals 19 through 27. Connect the wires to the correct
terminals as specified on the shield under Analog Outputs.
For each analog output, connect the positive (+) wire to the analog output
terminal and the negative (–) wire to one of the common terminals.
Doc. #560404000 3/8/01
Hawki™ AHU Controller Installation Instructions
Digital Outputs
The Hawki provides 6 digital output connections at Terminals 40 through 51.
The digital outputs are dry contacts rated at 24-VAC, 2A, pilot duty. Connect the
wiring to the correct terminals as specified on the shield under Digital Outputs.
The status of the digital output is indicated by the 6 output status light-emitting
diodes (LEDs) located to the left of each output description on the shield. The
output status LEDs match the status of the relay as follows:
If the contact is closed, the relay is energized and the LED is on.
If the contact is open, the relay is de-energized and the LED is off.
Connecting Network
Use a suitable shielded cable (Belden 8761, Novar Controls WIR-1010, or
equivalent) to make the communication connections between the Hawki and the
module communications terminals of the Lingo, Savvy, or EP/2. On the Hawki,
the communications connections are Terminals 54, 55, and 56, which are located
in the upper right corner of the circuit board.
The labeling for the network communications is shown on the shield to the left of
the terminal connections.
NOTE! Make certain that the positive (+) and the negative (–)
connections are made correctly.
A network communications schedule status LED is located directly above the
terminals. This LED blinks according to the schedule mode. (See “Checking
Installation” for information about the operation of this LED.)
NOTE! The Shield connection (Terminal 55) is dedicated for
communications only. Do not connect any other grounds
to the Shield connection.
Supplying the Hawki
with Power
The Hawki is powered by 24-VAC, requiring 15 VA. Connect the 24 volts to
Terminals 52 and 53 located in the upper right corner of the circuit board, just
below the network communications connections.
The labeling for the power supply is shown on the shield to the left of the power
terminal connections.
NOTE! The 24 VAC power connection is isolated. One
transformer can be used to power multiple modules within
the restrictions of the 15 VA consumption.
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Hawki™ AHU Controller Installation Instructions
Setting the Module
Every LOGIC ONE module must have a unique address for the Lingo, Savvy, or
EP/2 to identify it. Addresses are assigned in the software during system
programming. Use the system printout to find the address of the Hawki being
installed. The address switch is located at the top and to the left side of the
circuit board (see Figure 4). Set the switches to match the module address as
indicated in Figure 5 and record the address in the area provided on the metal
Figure 5. Hawki address settings
NOTE! Only the first six switches are used to set the address of
the module. The last two switches are reserved for future
use and should be left in the on position (up) as shown in
Figure 5.
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Hawki™ AHU Controller Installation Instructions
Checking Installation
Check the following items to ensure proper operation.
Make sure that the module is mounted according to the instructions in this
Check the wiring to verify that all of the connections are secure and wired
NOTE! The Hawki is designed to provide out-of-the-box control
before the module receives a download from a Lingo,
Savvy, or EP/2. Although the Hawki powers up in
scheduled off mode, a jumper wire (short) can be placed
across Terminals 34 and 35 to make it control to scheduled
on mode (70°F heat, 74°F cool). The Hawki stays
scheduled on until the jumper wire is removed and for up
to 10 additional minutes after the jumper wire is removed.
Check the power connection.
Turn on the power to the Hawki, the HVAC system, and its control circuitry.
If the system components are operating properly, the Hawki performs a
self-diagnostic check; establishes communications with the Lingo, Savvy, or
EP/2; and begins to control the HVAC unit.
Check the network communications schedule status LED located in the upper
right corner of the circuit board, just above the network communications
If the module is communicating properly, this LED should be flashing
according to the schedule mode or timed override.
— When the Hawki is in scheduled off mode, the LED is off and flashes on
briefly when communicating.
— When the Hawki is in scheduled on mode, the LED is on and flashes off
briefly when communicating.
Check the digital outputs.
The 6 digital output status LEDs indicate the status of each active digital output.
Verify that the LEDs are lit when the corresponding digital output is on.
Check for alarm messages.
The LOGIC ONE self-diagnostic programs check the operation of the system.
Any faults or malfunctions are displayed in the form of alarm messages at the
executive module’s display, if applicable, or in the software. Vary the Hawki
setpoints and verify that the equipment is responding properly.
Doc. #560404000 3/8/01
Hawki™ AHU Controller Installation Instructions
Replacing the Cover
If the installation has been successfully completed, carefully place the Hawki
cover on the backplate as follows:
Insert the tabs at the bottom of the module cover in the slots on
the bottom of the backplate.
Rotate the cover up and over the top of the backplate and tighten
the screws to secure the cover.
NOTE! Screw holes are provided at the bottom of the Hawki for
an optional method of securing the cover to the backplate
(see Figure 2). It requires #6-32 screws (not supplied).
Model and Part Numbers
Table 1 lists the part numbers to be used when ordering parts.
Table 1. Novar Controls Part Numbers
Hawki™ AHU Controller
Two-conductor shielded cable (Belden 8761
Doc. #560404000 3/8/01
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