Specifications | Carrier 48TF004-007 Air Conditioner User Manual

48/50TC04---28, 50TCQ04---12
48/50HC04---14, 50HCQ04---12
Factory Installed Option
RTU---OPEN
Controls, Start---Up, Operation
and Troubleshooting Instructions
TABLE OF CONTENTS
Economizer Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . 2
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
SENSOR/ACCESSORY INSTALLATION . . . . . . . . . . . . . . . . 2
Sensors and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
User Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Install Analog Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Supply Air Sensor (SAT) . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Outdoor Air Sensor (OAT) . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Space Temperature Sensor (SPT) . . . . . . . . . . . . . . . . . . . . . 4
CO2 Sensor(s) (IAQ and OAQ) . . . . . . . . . . . . . . . . . . . . . . 6
Relative Humidity Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Installing Discrete Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Compressor Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Analog Output 2 Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Setpoint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Clockset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
USERPW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Occupancy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Indoor (Supply) Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Economizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Humidistat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Single Enthalpy (Outdoor Enthalpy) . . . . . . . . . . . . . . . . . . 8
Differential Enthalpy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Power Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Fire Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Filter Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Dehumidification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Fan Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Remote Occupancy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Unoccupied Free Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Communication Wiring--Protocols . . . . . . . . . . . . . . . . . . . . . 10
Fire Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
I--Vu OPEN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Compressor Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
BACnet MS/TP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Modbus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Johnson N2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Filter Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
LonWorks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Local Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
START--UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Additional Installation/Inspection . . . . . . . . . . . . . . . . . . . . . 13
Service Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Fan Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Compressor 1 and Compressor 2 Test . . . . . . . . . . . . . . . . . 13
Heat 1 and Heat 2 Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Indoor Air Quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Demand Limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Optimal Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Fan Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Door Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Linkage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Thermistor Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . 21
Software Version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Communication LED’s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Third Party Networking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Reversing Valve Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
APPENDIX A -- USER INTERFACE MENUS . . . . . . . . . . . . 27
Dehumidification Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
APPENDIX B -- THIRD PARTY POINTS LIST . . . . . . . . . . . 36
Power Exhaust Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
RTU--OPEN START--UP SHEET . . . . . . . . . . . . . . . . . . . . . . 41
Copyright 2010 Carrier Corp. D 7310 W. Morris St. D Indianapolis, IN 46231
Printed in U.S.A.
Edition Date: 08/10
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Catalog No:48---50HCTQ---01T
Replaces: NEW
SAFETY CONSIDERATIONS
GENERAL
Installation and servicing of air-conditioning equipment
can be hazardous due to system pressure and electrical
components. Only trained and qualified service personnel
should install, repair, or service air-conditioning
equipment. Untrained personnel can perform the basic
maintenance functions of replacing filters. Trained service
personnel should perform all other operations.
When working on air-conditioning equipment, observe
precautions in the literature, tags and labels attached to
the unit, and other safety precautions that may apply.
Follow all safety codes. Wear safety glasses and work
gloves.
Follow all safety codes. Wear safety glasses and work
gloves. Have fire extinguisher available. Read these
instructions thoroughly and follow all warnings or
cautions attached to the unit. Consult local building codes
and National Electrical Code (NEC) for special
requirements.
Recognize safety information. This is the safety-- alert
. When you see this symbol on the unit and in
symbol
instructions or manuals, be alert to the potential for
personal injury.
Understand the signal words DANGER, WARNING, and
CAUTION. These words are used with the safety-- alert
symbol. DANGER identifies the most serious hazards
which will result in severe personal injury or death.
WARNING signifies a hazard which could result in
personal injury or death. CAUTION is used to identify
unsafe practices which may result in minor personal
injury or product and property damage. NOTE is used to
highlight suggestions which will result in enhanced
installation, reliability, or operation.
The RTU-- OPEN controller is an integrated component of
the Carrier rooftop unit. Its internal application
programming provides optimum performance and energy
efficiency. RTU-- OPEN enables the unit to run in 100%
stand-- alone control mode, Carrier’s I-- Vu Open network,
or a Third Party Building Automation System (BAS).
On-- board DIP switches allow you to select your protocol
(and baud rate) of choice among the four most popular
protocols in use today: BACnet, Modbus, Johnson N2 and
LonWorks. (See Fig. 1.)
Carrier’s diagnostic display tools such as Field Assistant
BACview6 Handheld or Virtual BACview can be used
with the RTU-- OPEN controller. Access is available via a
5-- pin J12 access port.
!
WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
Disconnect all power to the unit before performing
maintenance or service. Unit may automatically start
if power is disconnected.
SENSOR/ACCESSORY
INSTALLATION
There are a variety of sensors and accessories available
for the RTU-OPEN. Some of these can be factory or field
installed, while others are only field installable. The
RTU-OPEN controller may also require connection to a
building network system or building zoning system. All
field control wiring that connects to the RTU-OPEN must
be routed through the raceway built into the corner post of
the unit or secured to the unit control box with electrical
conduit. The unit raceway provides the UL required
clearance between high and low-voltage wiring. Pass the
control wires through the hole provided in the corner post,
then feed the wires thorough the raceway to the
RTU-OPEN. Connect the wires to the removable Phoenix
connectors and then reconnect the connectors to the board.
See Fig. 1 and Table 1 for board connections and Fig. 2
for Typical Factory RTU-OPEN wiring.
IMPORTANT: Refer to the specific sensor or accessory
instructions for its proper installation and for rooftop unit
installation refer to base unit installation instructions and
the unit’s wiring diagrams.
!
WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury, death and/or equipment damage.
Disconnect electrical power and use lock--out tags
before wiring the RTU--OPEN controller.
2
C10818
Fig. 1 -- RTU--OPEN Control Module
3
Table 1 – RTU--OPEN Inputs and Outputs
POINT NAME
Space Temp / Zone Temp
Supply Air Temperature
Outdoor Air Temperature
Space Temperature Offset Pot
Safety Chain Feedback
Compressor Safety Status
Fire Shutdown Status
Enthalpy Status
Humidistat Input Status
Indoor Air CO2
Outdoor Air CO2
Space Relative Humidity
Supply Fan Status*
Filter Status*
Door Contact Input*
Occupancy Contact*
Economizer Output
Supply Fan Relay State
Compressor 1 Relay State
Compressor 2 Relay State
Heat Stage 1 Relay State
Heat Stage 2 Relay State
Power Exhaust Relay State
Dehumidification Relay State
BACnet OBJECT
TYPE OF I/O
NAME
DEDICATED INPUTS
zone_temp
AI (10K Thermistor)
sa_temp
AI (10K Thermistor)
oa_temp
AI (10K Thermistor)
stpt_adj_offset
AI (100K Potentiometer)
safety_status
DI (24 VAC)
comp_status
DI (24 VAC)
firedown_status
DI (24 VAC)
enthalpy_status
DI (24 VAC)
humstat_status
DI (24 VAC)
CONFIGURABLE INPUTS
iaq
AI (4--- 20 ma)
oaq
AI (4--- 20 ma)
space_rh
AI (4--- 20 ma)
sfan_status
DI (24 VAC)
filter_status
DI (24 VAC)
door_contact_status
DI (24 VAC)
occ_contact_status
DI (24 VAC)
OUTPUTS
econ_output
AO (4--- 20ma)
sfan
DO Relay (24VAC , 1A)
comp_1
DO Relay (24VAC , 1A)
comp_2
DO Relay (24VAC , 1A)
heat_1
DO Relay (24VAC , 1A)
heat_2
DO Relay (24VAC , 1A)
pexh
DO Relay (24VAC , 1A)
dehum
DO Relay (24VAC, 1A)
CONNECTION PIN
NUMBER(S)
J20--- 1, 2
J2--- 1, 2
J2--- 3, 4
J20--- 3
J1--- 9
J1--- 2
J1--- 10
J2--- 6
J5--- 7
J4--- 2 or J4--- 5
J5--- 1 or J5--- 3 or
J5 5 or J5--- 7
J2--- 5
J1--- 4
J1--- 8
J1--- 7
J1--- 6
J1--- 5
J11--- 3
J11--- 7, 8
* These inputs (if installed) take the place of the default input on the specific channel
Parallel pins J5 ---1 = J2 ---6, J5 ---3 = J1 ---10, J5 ---5 = J1 ---2 are used for filed installation.
Refer to the input configuration and accessory sections for more detail.
Sensors and Accessories
The RTU-OPEN controller is configurable with the
following field-supplied sensors:
NOTE: Supply air temperature sensor (33ZCSENSAT) is
factory-installed.
S Space temperature sensor (SPS, SPPL, SPP, SPPF,
33ZCT55SPT, 33ZCT56SPT, or 33ZCT59SPT
S Indoor air quality sensor (33ZCSENCO2,
33ZCT55CO2, 33ZCT56CO2) required for demand
control ventilation.
S Outdoor air quality sensor (33ZCTSENCO2)
S CO2 aspirator box (C33ZCCASPCO2) required for CO2
return duct/outside air applications
S Outdoor air enthalpy switch (33CSENTHSW)
S Return air enthalpy sensor (33CSENTSEN) required for
differential enthalpy control
S Space relative humidity sensor (33ZCSENSRH-01)
S Duct relative humidity (33ZCSENDRH-01)
S Humidistat (--HL--38MG-029)
S Smoke Detectors (CRSMKSEN002A00,
CRSMKKIT002A00)
S Fan and/or Filter Status (CRSTATUS001A00,
CRSTATUS005A00)
User Interfaces
S BACview 6 Handheld (BV6H)
S Virtual BACview (USB-L or USB-TKIT required)
S Field Assistant (USB-TKIT required)
Install Analog Sensors
Supply Air Sensor (SAT)
The factory supplies the discharge (supply) air sensor with
the unit and is pre-- wired. On 04-16 size units, the SAT is
secured to the unit’s supply duct opening. This sensor
must be relocated into the supply duct during unit
installation. On 17-30 size units, the SAT is mounted
through the side of the heat chamber below the fan deck,
and does NOT require relocation.
Outdoor Air Sensor (OAT)
The OAT is supplied with the economizer option or
accessory. It is wired through the 12-pin plug (PL6) in the
return air section of the unit and is mounted on the
economizer assembly.
Space Temperature Sensor (SPT)
There are 2 types of SPT sensors available from Carrier,
resistive input non-communicating (T55, T56, and T59)
and Rnet communicating (SPS, SPPL, SPP, and SPPF)
sensors. Each type has a variety of options consisting of:
timed override button, set point adjustment, a LCD
screen, and communication tie in. Space temperature can
be also be written to from a building network or zoning
system. However, it is still recommended that return air
duct sensor be installed to allow stand-alone operation for
back-up. Refer to the configuration section for details on
controller configurations associated with space sensors.
4
C10819
Fig. 2 -- Typical Factory Option Wiring
5
Resistive Non-- Communicating Sensor Wiring
For sensor with setpoint adjustment up to 500 ft (152m),
use three-conductor shielded cable 20 gauge wire to
connect the sensor to the controller. For non set point
adjustment (slidebar) or return air duct sensor, an
unshielded, 18 or 20 gauge, two-conductor, twisted pair
cable may be used. Below is the list of the connections of
the SPT to the RTU-OPEN, refer to Fig. 3 and 4 for
typical connections at the sensor.
S J20-1 = temperature sensor input (SEN)
S J20-2 = sensor common
S J20-3 = Setpoint adjustment input (SET)
NOTE:
See Fig. 5 for space temperature sensor
averaging. T55/56 Override button will no longer function
when sensors are averaged. Only Sensor 1 T56 STO input
can be used.
1
2
3
4
5
SEN
SW1
6
CO2 Sensor(s) (IAQ and OAQ)
SET
BLK
(T56)
BRN (GND)
BLU (SPT)
SENSOR WIRING
JUMPER
TERMINALS
AS SHOWN
Cool
Warm
C07131
Fig. 3 -- Space Temperature Sensor
Typical Wiring (33ZCT56SPT)
BRN (COM)
BLK (STO)
BLU (SPT)
OR
Rnet Communicating Sensor Wiring
The Rnet bus allows local communication with the
RTU-OPEN, including communicating sensors. The Rnet
bus can hold up to 6 devices in the following
combinations wired in daisy-chain or hybrid
configuration:
S 1-4 SPS sensor(s)
S 1 SPPL, SPP, or SPPF sensor
S 1-4 SPS sensor(s), and 1 SPPL, SPP, or SPPF sensor
S Any of the above combinations, plus up to 2
BACview6s
NOTE: Additional SPS sensors and BACview6 must be
addressed. Use the jumpers on the SPS sensor’s circuit
board and refer to the BACview6’s installation instructions
for addressing.
For Rnet wiring up to 500ft (152m), use 18 AWG 4
conductor unshielded plenum rated cable.
The
RTU-OPEN’s J13-RNET connection has a 4 pin Phoenix
connector wired as described below, Fig. 6 shows sensor
Rnet wiring.
S RNET - 1 = Signal ground (GND)
S RNET - 2 = Signal (Rnet+)
S RNET - 3 = Signal (Rnet-- )
S RNET - 4 = Power (+12v)
SET
SEN
OPB
COM- PWR+
24 VAC
SENSOR
WIRING
The indoor air quality (IAQ) and outdoor air quality
(OAQ) sensors monitor carbon dioxide (CO2) levels. This
information is used to monitor the quality of air in terms
of parts per million (PPM). The same sensor is used for
inside, outside, and duct monitoring, except an aspirator
box is required for outside and duct mounting. The CO2
sensor is preset for a range of 0 to 2000 ppm and a linear
mA output of 4 to 20. The rooftop unit may have a factory
installed CO2 sensor on the side of the economizer
assembly in the return air section of the unit and is
pre-wired and pre-configured at the factory. For field
installed sensors, a field supplied transformer must be
used to power the sensor. Refer to the instructions
supplied with the CO2 sensor for electrical requirements
and terminal locations. RTU-OPEN configurations must
be changed after adding a CO2 sensor. See below and Fig.
7 for typical CO2 sensor wiring.
S J4-- 2 or J4-- 5 = 4-- 20mA signal input
S J4-- 3 or J4-- 6 = signal common
NOTE: The factory used J4-2&3 for CO2 (IAQ) sensor
inputs.
Combination Temperature and CO2 Sensor
If using a combination temperature and CO2 sensor
(33ZCT55CO2 or 33ZCT56CO2), refer to the installation
instructions provided with the sensor.
POWER
WIRING
NOTE: Must use a separate isolated transformer.
Fig. 4 -- Space Temperature Sensor
Typical Wiring (33ZCT59SPT)
6
J20
1
2
RED
RED
BLK
BLK
RED
RED
RED
BLK
BLK
BLK
SENSOR 1
SENSOR 2
SENSOR 3
SENSOR 4
SPACE TEMPERATURE AVERAGING — 4 SENSOR APPLICATION
J20
RED
RED
BLK
BLK
BLK
BLK
SENSOR 1
SENSOR 3
SENSOR 2
RED
BLK
2
RED
RED
1
RED
RED
BLK
BLK
SENSOR 4
LEGEND
Factory Wiring
SENSOR 6
SENSOR 5
RED
RED
BLK
BLK
Field Wiring
SENSOR 8
SENSOR 7
SENSOR 9
SPACE TEMPERATURE AVERAGING — 9 SENSOR APPLICATION
C07133
Fig. 5 -- Space Temperature Averaging
+ 0-10VDC
- SIG COM (J4-6)
+ 4-20mA (J4-5)
ALARM
NC
COM RELAY
NO CONTACTS
}
H G 24 VAC
OR
+ - 24 VDC
2 1
8765432 1
C07134
Fig. 7 -- Indoor/Outdoor Air Quality (CO2) Sensor
33ZCSENC02) -- Typical Wiring Diagram
C10820
Fig. 6 -- Typical Rnet Communication Sensor Wiring
7
Relative Humidity Sensors (Space or Duct
Mounted)
Humidistat
The accessory space humidity sensor or duct humidity
sensor is used to measure the relative humidity of the air
within the space or return air duct. The RH reading is used
to control the Humidi-Mizert option of the rooftop unit.
For wiring distances up to 500 ft (152m), use a
3-conductor, 18 or 20 AWG shielded cable. The shield
must be removed from the sensor end of the cable and
grounded at the unit end. The current loop power for the
sensor is provided by the RTU-OPEN controller as 24vdc.
Refer to the instructions supplied with the RH sensor for
electrical
requirements and
terminal
locations.
RTU-OPEN configurations must be changed after adding
a RH sensor. See below and Fig. 8 and 9 for typical RH
sensor wiring.
S J4-- 1 or J4-- 4 = 24vdc loop power
S J4-- 2 or J4-- 5 = 4-- 20mA signal input
NOTE: The factory default for dehumidification control
is a normally open humidistat.
Installing Discrete Inputs
Compressor Safety
The compressor safety input provides the RTU-OPEN
with feedback to when the compressor is not running and
should be. This feedback is usually provided by a
Compressor Lock-Out (CLO) device. Compressor safety
is a dedicated input on the configurable input 3 and tells
the RTU-OPEN when the compressor is locked out. The
normal condition for compressor safety is good operation.
A normally open compressor safety is the factory default
for all units. Follow specific accessory instructions if
installing a CLO device. The CLO should wire into the
unit’s Low Voltage terminal Board (LVTB).
NOTE: Input 3 can also be wired into J-- 5.
MOUNTING
HOLES
Io
Vin
Gnd
WIRING
OPENING
Vo
The accessory humidistat provides the RTU-OPEN insight
to the relative humidity in the space. The humidistat
reads the RH level in the space and compares it to its
setpoint to operate a dry contact. The humidistat is a
dedicated input on the configurable input 9 and tells the
RTU-OPEN when the RH level is HIGH or LOW. The
normal condition for humidity is LOW. A normally open
humidistat is the factory default control for the
Humidi-MiZert option. To wire in the field:
S J5-- 8 = 24 VAC source for dry contact
S J5-- 7 = Signal input
Single Enthalpy (Outdoor Enthalpy)
The outdoor enthalpy switch/receiver (33CSENTHSW)
senses temperature and humidity of the air surrounding
the device and calculates the enthalpy when used without
an enthalpy sensor. The relay is energized when enthalpy
is high (above 28 BTU/lb OR dry bulb temperature is
above 75_F) and de-energized when enthalpy is low
(below 27 BTU/lb AND dry bulb temperature is below
74.5_F). The enthalpy input is dedicated to input 8 and
tells the RTU-OPEN when the outside air enthalpy is
HIGH or LOW. The normal condition for the enthalpy
input is HIGH. Enthalpy is configured on input 8 in the
factory when it is added as an option.
NOTE: The enthalpy calculation is done using an
average altitude of 1000 ft above sea level.
For field installation, refer to the enthalpy accessory
instructions. For wiring see below and Fig. 10. The
RTU-OPEN board provides 24vac on one of the two loose
grey wires in the return air section of the rooftop near the
12-pin economizer plug. To determine the correct grey,
measure the voltage on the wires with power applied to
the unit. If 24-vac is sensed, then that is the grey wire that
is connected to the RTU-OPEN board at J2-7. The other
is the signal for input 8, connect it to the LOW Enthalpy
terminal on the enthalpy switch/receiver. Tie into the
12-pin economizer plug on pin 4 or the black wire
connected to the actuator for the enthalpy’s GND
connection. Power can also be provided direct from the
unit transformer and J5 terminal on the RTU-OPEN.
S J2-- 7 or J5-- 2 = 24 VAC for enthalpy switch power
S J2-- 6 or J5-- 1 = input signal
Differential Enthalpy
SW2
1
2
3
4
5
6
ON
a33-9141
Vin - J4 -1 or J4 -4 24Vdc
Io - J4 -2 or J4 -5 4 -20mA output
C07201
Differential enthalpy control requires both an enthalpy
switch/receiver (33CSENTHSW) and an enthalpy sensor
(33CSENTSEN). The enthalpy sensor must be installed
in the field as the factory can only provide single
enthalpy. The enthalpy sensor must be mounted in the
return airstream and calculates the enthalpy of the indoor
air. The relay is energized when the enthalpy detected by
the return air enthalpy sensor is less than the enthalpy at
the enthalpy switch/receiver. The relay is de-energized
when the enthalpy detected by the return air enthalpy
sensor is greater than the enthalpy at the enthalpy
switch/receiver (differential enthalpy control).
Fig. 8 -- Space Relative Humidity Sensor Typical Wiring
8
J4-1 or J4-4 + 24 VDC Supply Voltage
J4-2 or J4-5 (-) 4 to 20 mA Current Loop Output
to RTU-OPEN
Relative Humidity Sensor
(Polarized Male Connector)
SPAN
ZERO
4-20 VAC GND 0-5V
mA or
or
VDC
0-10V
C10839
Fig. 9 -- Duct Relative Humidity Sensor Typical Wiring
To wire return air enthalpy sensor:--MP
Connect the 4-20 mA In terminal on the enthalpy switch/
receiver to the 4-20 mA Out terminal on the return air
enthalpy sensor. Connect the 24-36 VDC Out terminal on
the enthalpy switch/receiver to the 24-36 VDC In terminal
on the return air enthalpy sensor. (See Fig 10.)
Fire Shutdown
The fire shutdown input is provided for unit shutdown in
response to a fire alarm or smoke detector. The fire
shutdown input is dedicated to input 5 and tells the
RTU-OPEN when to shutdown due to smoke detection or
fire alarm system.
The normal condition for fire
shutdown is there is no fire alarm. The unit may have
factory installed smoke detector(s); refer to the base unit
installation instructions for details on any adjustments
required during unit installation. Fire shutdown is always
factory configured for a normally open smoke detector.
For field installation of a smoke detector see instructions
for that specific accessory.
See below and the
troubleshooting section for wiring at the unit’s Low
Voltage Terminal Board (LVTB).
S LVTB - UNIT SHUTDOWN - 24v OUT = 24 VAC
source
S LVTB - UNIT SHUTDOWN - Smoke Alarm = Signal
input to RTU-- OPEN
NOTE: Input 5 can also be wired into J5-- 3.
Filter Status
The filter status accessory is a field-installed accessory.
This accessory detects plugged filters. When installing
this accessory, the unit must have a free input (input 3, 5,
8, or 9). One of the dedicated functions (Humidistat, Fire
shutdown, Enthalpy, or Compressor safety) must not be in
use to configure Filter Status. Refer to the configuration
section for details on configuring inputs for specific
functions and state. Refer to Fig. 1 for wire terminations
at J5.
Fan Status
The fan status accessory is a field-installed accessory.
This accessory detects when the indoor fan is moving air.
When installing this accessory, the unit must have a free
input (input 3, 5, 8, or 9). One of the dedicated functions
(Humidistat, Fire shutdown, Enthalpy, or Compressor
safety) must not be in use to configure Fan Status. Refer
to the configuration section for details on configuring
inputs for specific functions and state. Refer to Fig. 1 for
wire terminations at J5.
Remote Occupancy
The remote occupancy accessory is a field-installed
accessory. This accessory provides an input to change the
units occupancy status. When installing this accessory, the
unit must have a free input (input 3, 5, 8, or 9). One of
the dedicated functions (Humidistat, Fire shutdown,
Enthalpy, or Compressor safety) must not be in use to
configure remote occupancy. Refer to the configuration
section for details on configuring inputs for specific
functions and state. Refer to Fig. 1 for wire terminations
at J5.
9
C10821
Fig. 10 -- Enthalpy Switch and Sensor Wiring
Communication Wiring--Protocols
General
Protocols are the communication languages spoken by
control devices. The main purpose of a protocol is to
communicate information in the most efficient method
possible. Different protocols exist to provide different
kinds of information for different applications. In the BAS
application, many different protocols are used, depending
on manufacturer. Protocols do not change the function of
a controller; just make the front end user different.
The RTU-- OPEN can be set to communicate on four
different protocols: BACnet, Modbus, N2, and LonWorks.
Switch 3 (SW3) on the board is used to set protocol and
baud rate. Switches 1 and 2 (SW1 and SW2) are used to
set the board’s network address. See Fig. 11 and 12 for
protocol switch settings and address switches. The 3rd
party connection to the RTU-- OPEN is through plug J19.
See Fig. 13 for wiring. Refer to the RTU-- OPEN 3rd Party
Integration Guide for more detailed information on
protocols, 3rd party wiring, and networking.
NOTE: Power must be cycled after changing the SW1-- 3
switch settings.
I--Vu OPEN
I-Vu OPEN is a Carrier front-end and Building
Automation System (BAS). It is a web based network
system that uses a native BACnet over MS/TP
communication protocol. The speed of the network can
range from 9600 to 76,800 baud. OPEN devices
communicate with a proprietary language called Linkage
on I-Vu OPEN. Linkage is established automatically and
allows the flow of specific data across OPEN devices.
Refer to I-Vu OPEN literature for more information on
I-Vu.
BACnet MS/TP
BACnet Master Slave/Token Passing (MS/TP) is used for
communicating BACnet over a sub-- network of
BACnet-- only controllers. This is the default Carrier
communications protocol. Each RTU-- OPEN module acts
as an MS/TP Master. The speed of an MS/TP network can
range from 9600 to 76.8K baud. Physical Addresses can
be set from 01 to 99.
10
SW3 Protocol Selection
PROTOCOL
BACnet MS/TP
(Master)
Modbus
(Slave)
N2
(Slave)
LonWorks
DS8
DS7
DS6
DS5
DS4
DS3
DS2
DS1
Unused
OFF
OFF
OFF
ON
OFF
Select Baud
Select Baud
Unused
OFF
OFF
ON
ON
OFF
Select Baud
Select Baud
Unused
OFF
OFF
OFF
ON
ON
OFF
OFF
Unused
ON
ON
OFF
ON
OFF
OFF
ON
NOTE:
DS = Dip Switch
BACnet MS/TP SW3 example shown
Baud Rate Selections
BAUD RATE
9600
19,200
38,400
76,800
DS2
OFF
ON
OFF
ON
DS1
OFF
OFF
ON
ON
Fig. 11 -- RTU--OPEN SW3 Dip Switch Settings
C07166
Modbus
The RTU-- OPEN module can speak the Modicon Modbus
RTU Protocol as described in the Modicon Modbus
Protocol Reference Guide, PI-- - MBUS-- - 300 Rev. J. The
speed of a Modbus network can range from 9600 to 76.8K
baud. Physical Addresses can be set from 01 to 99.
Johnson N2
C10815
Fig. 12 -- RTU--OPEN Address Switches
N2 is not a standard protocol, but one that was created by
Johnson Controls, Inc. that has been made open and
available to the public. The speed of N2 network is
limited to only 9600 baud. Physical Addresses can be set
from 01 to 99.
LonWorks
LonWorks is an open protocol that requires the use of
Echelon’s Neuron microprocessor to encode and decode
the LonWorks packets. In order to reduce the cost of
adding that hardware on every module, a separate
LonWorks Option Card (LON-- OC) was designed to
connect to the RTU-- OPEN.
This accessory card is needed for LonWorks and has to be
ordered and connected using the ribbon cable to plug J15.
The RTU-- OPEN’s baud rate must be set to 38.4k to
communicate with the LON-- OC. The address switches
(SW1 & SW2) are not used with LonWorks.
C10816
Fig. 13 -- Network Wiring
11
C10817
Fig. 14 -- LON--OC and LON Network Wiring
Local Access
BACview6
Handheld
The BACview6 is a keypad/display interface used to
connect to the RTU-- OPEN to access the control
information, read sensor values, and test the RTU. (See
Fig. 15.) This is an accessory interface that does not come
with the RTU-- OPEN controller. You connect the
BACview6 to the RTU-- OPEN’s J12 local access port or
one of the communicating space sensor’s access port.
There are 2 password protected levels in the display (User
and Admin). The user password is defaulted to 0000, but
can be changed. The Admin password is 1111 and cannot
be changed. There is a 10 minute auto logout if a screen is
left idle. See Appendix A for navigation and screen
content.
Virtual BACview
Virtual BACview is a freeware computer program that
functions as the BACview6 Handheld. The USB Link
interface (USB-- L) is required to connect a computer to
the RTU-- OPEN board. The link cable connects a USB
port to the J12 local access port. This program functions
and operates identical to the handheld.
Field Assistant
Field Assistant is a computer program included with the
purchase of the USB Link Tech Kit (USB-TKIT). This is
a field Tech Tool to set-up, service, or download the
RTU-OPEN controller. The link cable connects a USB
port to the J12 local access port. The menu structure is
similar to the BACview, but accessed and functions the
same as I-Vu.
Fig. 15 -- BACview6 Handheld Connections
12
C07170
START--UP
IMPORTANT: Follow the base unit’s start-up sequence
documented in its specific instructions. Use the base
unit’s start-up check list when performing the start-up. At
the end of this manual there is an additional RTU-OPEN
Start-up Sheet to be completed and included with the base
unit check list.
Besides the base unit start-up, there are a few steps to take
to properly start-up the controls. RTU-OPEN’s Service
Test function should be used to assist in the base unit
start-up and also allows verification of output operation.
Controller configuration is also part of start-up. This is
especially important when field accessories have been
added to the unit. The factory pre-configures options
installed at the factory. There may also be additional
installation steps or inspection required during the start-up
process.
Additional Installation/Inspection
Inspect the field installed accessories for proper
installation, making note of which ones do or do not
require configuration changes. Inspect the RTU-OPEN’s
Alarms for initial insight to any potential issues. See
troubleshooting section for alarms. Inspect the SAT
sensor for relocation as intended during installation.
Inspect special wiring as directed below.
Humidi--MiZert Control Wiring
In units equipped with the optional Humidi-MiZer option
there are 2 pink wires loose in the control box used to
control the dehumidification function of the unit. These
pink wires are meant to be ties to a space humidistat or
thermidistat on an electromechanical unit.
On
RTU-OPEN equipped units these pink wires must be
connected to J11-7 & 8 to allow the OPEN board to
operate the dehumidification function or the unit.
Disconnect the J11 Phoenix style connector form the
board and use the plug screws to secure the pink wires in
pins 7 and 8, reconnect the plug to the board at J11.
Power Exhaust Relay Power
The relay used by the RTU-OPEN board to control power
exhaust is a dry contact which means it does not have
24vac. This 24vac must be connected to the relay to
allow it operate the power exhaust relay in the PE
accessory. A 24vac source should be provided to the
J11-2 pin on the RTU-OPEN. This can be provided by the
unit’s transformer from various sources. The “R” terminal
on the unit’s low voltage terminal board (LVTB) is a
logical source.
Service Test
The Service Test function can be used to verify proper
operation of compressors, heating stages, indoor fan,
power exhaust fans, economizer, and dehumidification.
Use of Service Test is recommended at initial system start
up and during troubleshooting. See Appendix A for
Service Test Mode table.
Service Test mode has the following changes from normal
operation:
S Outdoor air temperature limits for cooling circuits,
economizer, and heating are ignored.
S Normal compressor time guards and other staging
delays are ignored.
S The status of Alarms (except Fire and Safety chain) is
ignored, but all alerts and alarms are still broadcasted
on the network.
Service Test can be turned ON/OFF at the unit display or
from the network. Once turned ON, other entries may be
made with the display or through the network. To turn
Service Test on, change the value of Test Mode to ON, to
turn Service Test off, change the value of Test Mode to
OFF.
NOTE: Service Test mode is password protected when
accessing from the display. Depending on the unit model,
factory-- installed options, and field-- installed accessories,
some of the Service Test functions may not apply.
Fan Test
This point allows the board’s fan output to be manually
turned On (Enable) and Off (Disable). Other test points
that require the fan for operation will automatically turn
the fan on and this point will still show “Disable.” Fan
test can operate simultaneously with other Service Test
Points.
Compressor 1 and Compressor 2 Test
The compressor test points are used to change output
status for the individual compressors. Compressor starts
are not staggered. The fan and heating service test outputs
are reset to “Disable” for the compressor service tests.
The Indoor fan and outdoor fans are controlled normally
to maintain proper unit operation. All normal cooling
alarms and alerts are functional.
NOTE:
Compressor 1 is always operated with
Compressor 2 due to outdoor fan control on Compressor
1. Always test Compressor 1 first, and leave it on to test
Compressor 2.
Heat 1 and Heat 2 Test
The heat test points are used to change output status for
the individual heat stages, gas or electric. The fans and
cooling service test outputs are reset to “Disable” for the
heat service tests. Indoor and outdoor fans are controlled
normally to maintain proper unit operation. All normal
heating alarms and alerts are functional.
Reversing Valve Test
This test point activates the DO7 relay at J11. These
rooftop units do not use reversing valve control for heat
pumps, therefore this test is not used.
13
Dehumidification Test
For units with the factory Reheat option, the
dehumidification relay is used to change the output status
to operate the circuits in different Reheat modes.
Dehumidification relay on by itself puts all circuits
running in Hot Gas Reheat dehumidification mode;
dehumidification relay on and the cooling test
(compressor test relays) on puts unit and or individual
circuits in subcooling dehumidification mode. The fans
and heating service test outputs are reset to “Disable” for
the dehumidification service test. Indoor and outdoor fans
are controlled normally to maintain proper unit operation.
All normal cooling/dehum alarms and alerts are
functional.
Power Exhaust Test
This point allows the board’s power exhaust (PE) output
to be manually turned On (Enable) and Off (Disable).
Power Exhaust test can operate simultaneously with other
Service Test Points.
Economizer Test
This point allows the board’s economizer output to be
manually controlled from 0 to 100 % Open. Economizer
test can operate simultaneously with other Service Test
Points.
Analog Output 2 Test
This test point activates the AO2 0-10vdc analog output at
J22. These rooftops do not use this output, therefore this
test is not used.
NOTE: Service Test Mode does not timeout. Be sure to
turn off test mode or cycle power to the RTU to return to
normal operation.
Configuration
The RTU-OPEN controller’s configuration points effect
the unit’s inputs and operation. Review and understand
the meaning and purpose of each configuration point
before changing it from the factory default value. Use the
RTU-OPEN Start-up Sheet during configuration; fill in
changed values if changed from factory default. There are
three main configurations menus: SETPOINT, UNIT, and
SERVICE. Each configuration point is described below
under its according menu. See Appendix A for BACview
menu structure.
Setpoint
Occupied Heating Setpoint - The heating setpoint the
controller maintains during the occupied period.
Range = 40-90_F
Occupied Cooling Setpoint – The cooling setpoint the
controller maintains during the occupied period.
Range = 55-99_F
Unoccupied Heating Setpoint – The heating setpoint the
controller maintains during the unoccupied period.
Range = 40-90_F
Unoccupied Cooling Setpoint – The cooling setpoint the
controller maintains during the unoccupied period.
Range = 55-99_F
Effective Heating Setpoint – The current setpoint value
heating operation will control to.
Effective Cooling Setpoint – The current setpoint value
cooling operation will control to.
Optimal Start - The earliest time prior to occupancy, at
which the Optimal Start function may begin to adjust the
effective setpoints. Setting this to 0 will disable optimal
start.
Range = 0-4 hours
Default = 4 hours
Occ Relative Humidity Setpoint – The space RH
setpoint the controller maintains during the occupied
period.
Range = 0 to the Unocc RH setpoint
Default 60%
Unocc Relative Humidity Setpoint – The space RH
setpoint the controller will maintain during the
unoccupied period.
Range = 30-100%
Default = 90%
DCV Max Ctrl Setpoint – The difference between indoor
and outdoor CO2 level which results in maximum
ventilation damper position.
Range = 0-9999ppm Default = 650ppm
Power Exhaust Setpoint – When the economizer damper
position opens above this point the power exhaust
operation will begin. When the damper position falls
below this point and 5% lower the power exhaust will
shutdown.
Range = 20-90%
Default = 50%
NOTE: This point is only used when Continuous
Occupied Exhaust = NO
Unit
Fan Mode – Sets the operation of the indoor fan when not
in cooling or heating mode. Refer to fan operation for
details on each operation.
Range = Auto, Continuous, or Always On
Default = Continuous
Unit Start Delay – Refers to the time delay the unit will
wait after power up or when transitioning from
unoccupied to occupied before it pursues any specific
operation.
Range = 0-30 sec
Default = 5 sec
Fan Off Delay – Time delay in which the fan will
continue run after being commanded off.
Range = 0-180sec
Default = 90sec
Minimum Cooling SAT – The supply air temperature
must remain above this value to allow cooling with the
economizer and/or compressors. There is 5_F plus and
minus deadband to this point. If the SAT falls below this
value during cooling a compressor stage will be removed
and/or the economizer will return to minimum position.
Range = 45-70_F
Default = 50_F
Maximum Heating SAT – The supply air temperature
must remain below this value to allow heating. There is
5_F plus and minus deadband to this point. If the SAT
falls below this value during heating the heat stages will
begin to decrease until the SAT has dropped below this
value.
Range = 95-150_F
Default = 120_F
14
Vent Dmpr Pos / DCV Min Pos – Minimum damper
position for ventilation during the occupied period
Range = 95-150_F
Default = 120_F
DCV Max Vent Damper Pos – This is the greatest
position the economizer can open to while trying to
control the indoor air quality levels
Range = 10-60%open Default = 50%open
S Fan Service Alarm Timer – The timer set for the
Supply Fan Runtime Alarm. After the number of hours
set on this point is exceeded the corresponding alarm will
be generated, and must be manually cleared in the
maintenance menu after the maintenance has been
completed. The timer will then begin counting its runtime
again for the next due maintenance.
NOTE: Default = 0 hours, if set = 0 hr this point is
disabled and its alarm will never be generated.
Comp 1 Service Alarm Timer – The timer set for the
Compressor 1 Runtime Alarm. After the number of hours
set on this point is exceeded the corresponding alarm will
be generated, and must be manually cleared in the
maintenance menu after the maintenance has been
completed. The timer will then begin counting its runtime
again for the next due maintenance.
NOTE: Default = 0 hours, if set = 0 hr this point is
disabled and its alarm will never be generated.
Comp 2 Service Alarm Timer – The timer set for the
Compressor 2 Runtime Alarm. After the number of hours
set on this point is exceeded the corresponding alarm will
be generated, and must be manually cleared in the
maintenance menu after the maintenance has been
completed. The timer will then begin counting its runtime
again for the next due maintenance.
NOTE: Default = 0 hours, if set = 0 hr this point is
disabled and its alarm will never be generated.
Filter Service Alarm Timer – The timer set for the Dirty
Filter Alarm. After the number of hours set on this point
is exceeded the corresponding alarm will be generated,
and must be manually cleared in the maintenance menu
after the maintenance has been completed. The timer will
then begin counting its runtime again for the next due
maintenance.
NOTE: Default = 600 hours, if set = 0 hr this point is
disabled and its alarm will never be generated.
Pushbutton Override – Set to enable or disable the
pushbutton override function of the locally installed space
sensor.
Default = Enable
Setpoint Adjustment – Set to enable or disable the
setpoint adjustment function of the locally installed space
sensor.
Default = Enable
Setpoint Adjustment Range - Sets the slider range of a
space sensor (with built in function). The slider is used to
offset the control setpoint.
Range = +/-0-5n_F
Default = 5n_F
Cooling Lockout Temperature - This defines the
minimum outdoor air temperature that cooling mode can
be enabled and run. If the OAT falls below this number
during cooling the compressors will be de-energized.
Range = 0-80_F
Default = 45_F
Economizer High OAT Lockout Temp – If the outdoor
air temperature rises above this value, economizer cooling
will be disabled and dampers will return and stay at
minimum position.
Range = 55-80_F
Default = 75_F
HP Rev Cycle Lockout Temp – If the outdoor air
temperature falls below this value, the compressors will
not be allowed to run for heating. Unit Type must be set
to Heat pump for this to be active.
Range = -20-30_F
Default = -3_F
Heating Lockout Temperature – This defines the
maximum outdoor air temperature that heating mode can
be enabled and run. If the OAT rises above this number
during heating the heat stages will be de-energized.
Range = 35-150_F
Default = 65_F
Unocc Free Cool Enable – Set to enable or disable the
economizer for night time free cooling (NTFC) operation.
Default = Disable
Setpoint Separation – Sets the minimum separation gap
in which setpoints can be set.
Range = 2-10_F
Default = 5_F
Occupancy Source – Tells the controller which method of
occupancy control to use in determining occupancy of the
rooftop. Refer to Occupancy in the operation section for
detail on each specific operation function.
Range = Always Occupied, BACnet Schedule,
BAS On/Off, or Remote Occ Input
Default = Always occupied
Inputs
Input 1 Function – This input is an analog input and can
be configured to be one of four different inputs: No
Sensor, IAQ Sensor, OAQ Sensor, or Space RH Sensor.
Input 1 is wired to pin J4-5.
Default = No Sensor
Input 2 Function – This input is an analog input and can
be configured to be one of four different inputs: No
Sensor, IAQ Sensor, OAQ Sensor, or Space RH Sensor.
Input 2 is wired to pin J4-2.
Software Default = No Sensor
Factory Default = IAQ Sensor with factory installed CO2
sensor
Input 3 - This input is a discrete input and can be
configured to be one of six different functions: No
Function, Compressor Safety, Fan Status, Filter Status,
Remote Occupancy, or Door Contact. This input can also
be configured to be either a Normally Open (N/O) or a
Normally Closed (N/C) switch. Input 3 is factory wired to
pin J1-2. Field accessories can be wired to its parallel pin
J5-5.
Factory Default = Compressor Safety and N/O
15
Input 5 - This input is a discrete input and can be
configured to be one of six different functions: No
Function, Fire Shutdown, Fan Status, Filter Status,
Remote Occupancy, or Door Contact. This input can also
be configured to be either a Normally Open (N/O) or a
Normally Closed (N/C) switch. Input 5 is factory wired to
pin J1-10. Field accessories can be wired to its parallel
pin J5-3.
Software Default = Fire Shutdown and N/C
Factory Default = Fire Shutdown and N/O
Input 8 - This input is a discrete input and can be
configured to be one of six different functions: No
Function, Enthalpy Switch, Fan Status, Filter Status,
Remote Occupancy, or Door Contact. This input can also
be configured to be either a Normally Open (N/O) or a
Normally Closed (N/C) switch. Input 8 is factory wired to
pin J2-6. Field accessories can be wired to its parallel pin
J5-1.
Software Default = Enthalpy Switch and N/O
Factory Default = No Function and N/O without factory
installed enthalpy sensor
Input 9 - This input is a discrete input and can be
configured to be one of six different functions: No
Function, Humidistat, Fan Status, Filter Status, Remote
Occupancy, or Door Contact. This input can also be
configured to be either a Normally Open (N/O) or a
Normally Closed (N/C) switch. Input 9 is factory and
field wired to pin J5-7.
Factory Default = Humidistat and N/O
Space Sensor Type – This tells the controller what type
of space sensor is installed to run the unit. The three types
that can be used are: a standard 10k Type II thermistor
(T55), sensor with a setpoint offset slider bar (T56), or a
communicating sensor (SPT Sensor).
Range = T55, T56, or SPT Sensor
Default = T55
T5x Override Duration – Sets the override time duration
the unit will change from unoccupied to occupied when
the override button is pushed on the space sensor.
Range = 0-24 hours
Default = 1 hour
Service
Unit Type – This tells the control what type of unit it is
controlling. Heat/Cool refers to gas and electric heat
units. HP O/B Ctrl refers to a heat pump unit which
requires reversing valve control. HP Y1/W1 Ctrl refers to
a heat pump unit whose reversing valve is built in to the
cooling or heating call.
Factory Default = Heat/Cool for non-heat pump
units, or HP Y1/W1 Ctrl for heat pump units.
Compressor Stages – This refers to the number of
mechanical cooling stages available on a specific unit.
Set this point to “One Stage” if there is one compressor in
the specific unit, set to “Two Stage” if there are two
compressors in the unit, and set to “None” if economizer
cooling ONLY is desired.
Factory Default = “One Stage” for 1 compressor
units, or “Two Stages” for 2 compressor units
Economizer Exists – This tells the controller if there is an
economizer installed on the unit.
Factory Default = NO if no economizer, or YES if
there is an economizer installed
Reversing Valve Type – Sets the heat pump’s (HP O/B
Ctrl type) reversing valve function. O output type refers
to a valve that is energized for cooling, and B output type
refers to a valve that is energized for heating.
Default = O output type
Heat Type – Tells the controller which type of heat the
unit is capable of. Electric is any unit without gas and a
Gas unit is one which requires gas input for heating.
Factory Default = Electric for cooling only units
and heat pumps, or Gas for gas units.
Number of Heat Stages – Tells the controller how many
heat stages outputs are available for use.
See
configuration in Appendix A for details on specific unit
configuration.
Factory Default = 1 for single heat stage units,
2 for duel stage units, or 0 for cooling only units.
Continuous Occupied Exhaust – This point tells the
controller when to run the power exhaust if equipped on
the unit.
If set to YES, the power exhaust will be on all the time
when in occupied mode and will be off when in
unoccupied mode. If set to NO the power exhaust will be
controlled by the Power Exhaust Setpoint.
Default = NO
Indoor CO2 Sensor Value @ Min mA – Sets the indoor
CO2 value when the board reads 4 mA at input 1 or 2.
Default 0 ppm
Indoor CO2 Sensor Value @ Max mA – Sets the indoor
CO2 value when the board reads 20 mA at input 1 or 2.
Default 2000 ppm
Outdoor CO2 Sensor Value @ Min mA – Sets the
outdoor CO2 value when the board reads 4 mA at input 1
or 2.
Default 0 ppm
Outdoor CO2 Sensor Value @ Max mA – Sets the
outdoor CO2 value when the board reads 20 mA at input 1
or 2.
Default 2000 ppm
NOTE: The indoor and outdoor min and max mA setting
are used to set the linear curve of mA vs. PPM.
Clockset
This submenu screen allows you to set the date and time
manually. The Daylight Savings Time (DST) can also be
changed here. The date and time is automatically set
whenever software is downloaded. The clock is a 24 hour
clock and not am/pm. The time should be verified (and
maybe changed) according to unit location and time zone.
Factory Default = Eastern Standard Time
16
USERPW
BAS On/Off
This submenu screen allows you to change
password to a four number password of choice.
password change screen is only accessible
Administrator Password (1111). The ADMIN
will always override the user password.
Factory Default = 0000
Range = 0000-- 9999
the user
The User
with the
password
OPERATION
The RTU-OPEN will control the compressors, economizer
and heating outputs based on its space temperature input
and setpoints. It can also be controlled by a building
control system or zoning system. An optional CO2 IAQ
sensor mounted in the space can influence the economizer
minimum position. The RTU-OPEN has a hardware clock
that can allow scheduling for stand-alone operation. The
RTU-OPEN’s default is to control to occupied setpoints
all the time, until a type of occupancy control is set. The
following sections describe the operation for the functions
of the RTU-OPEN.
Occupancy
Occupancy is the fundamental overall control of
equipment. The unit can be in one of two states:
Occupied or Unoccupied. These are usually referred to as
periods because they represent periods of any given day.
Before RTU-OPEN can operate specific functions of the
equipment it is installed on, occupancy must be
determined. There are four different ways RTU-OPEN
can determine occupancy. These are described below and
selected by the configuration point Occupancy Source.
Always Occupied (Default)
The unit will not determine occupancy and continuously
run in the occupied state or period. RTU-OPEN ships from
the factory with this setting to allow immediate operation.
BACnet Schedule
When Occupancy Source is set to BACnet Schedule,
RTU-OPEN will use a schedule to change occupancy
based upon a day of week and a time period. Local time
and date should be set in the RTU-OPEN for this function
to operate properly. This function applies if setting a local
schedule in the RTU-OPEN or if applying the unit to an
I-Vu Open network or an OPEN zoning system.
An
OPEN network schedule can override a local schedule
within the unit. A space sensor push button override is
only available when running a local or OPEN schedule.
The push button will override an unoccupied period to
occupied for the specified time duration.
When Occupancy Source is set to BAS On/Off,
RTU-OPEN follows occupancy based on an On/Off
command to the BAS ON/OFF software point. An on
command sets the occupancy to occupied, and an off
command sets it to unoccupied. The Building Automation
System can be speaking BACnet, Modbus, N2, or LON
and is writing to the BAS On/Off point in the open
protocol point map.
Remote Occ Input
When Occupancy Source is set to Remote Occ Input,
RTU-OPEN follows occupancy based on the remote
occupancy switch input. Inputs 3, 5, 8, and 9 on plug J5
can be hard-wired to command the unit’s occupancy. The
Occupancy Contact point show the status as on or off, on
is occupied and off is unoccupied.
Indoor (Supply) Fan
The indoor fan can be configured to operate in three
different manors. The configuration point Fan Mode
determines how the fan will run. The fan will always be
disabled if a fire shutdown or safety chain alarm is active.
A valid space temperature and supply air temperature
must be available for the fan to operate. There is a unit
start delay in effect when the unit is transitioning from
unoccupied to occupied. The following describes specific
fan operation based on the Fan Mode configuration value.
Auto
When Fan Mode is set to Auto, RTU-OPEN will cycle the
fan on and off based on the demand for heating, cooling,
and dehumidification. There is a configurable fan off
delay that is upheld before shutting the fan off after
conditioning has ended.
Continuous
When Fan Mode is set to Continuous, RTU-OPEN will
cycle the fan based on occupancy. The fan will run the
whole occupied period and operate in the auto mode
during the unoccupied period.
Always On
When Fan Mode is set to Always On, RTU-OPEN will run
the fan all the time regardless of occupancy or demand.
The RTU-OPEN has an optional Supply Fan Status input
to provide proof of airflow. If this is enabled, the point
will look for a contact change whenever the Supply Fan
Relay is on. If it is not enabled then it will always be the
same state as the Supply Fan Relay. The cooling,
economizer, heating, dehumidification, CO2 and power
exhaust routines will use this input point for fan status.
17
Cooling
The compressor outputs are controlled by the Cooling
Control PID Loop and Cooling Stages Capacity algorithm.
They will be used to calculate the desired number of
stages needed to satisfy the space by comparing the Space
Temperature (SPT) to the Occupied Cool Setpoint plus the
T56 slider offset when occupied and the Unoccupied Cool
Setpoint (UCSP) plus the T56 slider offset, if unoccupied.
The economizer, if available, will be used for cooling in
addition to the compressors. The following conditions
must be true in order for this algorithm to run:
S Indoor Fan has been ON for at least 30 seconds.
S Heat mode is not active and the time guard between
modes equals zero.
S If occupied and the SPT > (occupied cool setpoint plus
the T56 slider offset).
S Space Temperature and supply air temperature values
are available.
S If it is unoccupied and the SPT > (unoccupied cool
setpoint plus the T56 slider offset). The indoor fan will
be turned on by the staging algorithm.
S If economizer is available and active and economizer
open > 85% and SAT > (SAT low limit + 5_F) and SPT
> effective set point + 0.5_F.
OR
Economizer is available, but not active
OR
Economizer is not available
S OAT > DX Lockout temperature
If all of the above conditions are met, the controller uses a
PID logic loop to energize or de-- energize compressors to
satisfy the cooling demand.
There is a fixed 3-- minute minimum on time and a
5-- minute off time for each compressor output and a
3-- minute minimum time delay between staging up or
down.
Any time the compressors are running the RTU-- OPEN
will stage down the compressors if the SAT becomes less
than the cooling low supply air setpoint. After a
compressor is staged off, it may be started again after a
normal time-- guard period and the supply air temperature
has increased above the low supply air setpoint.
Economizer
The Economizer dampers are used to provide free cooling
and Indoor Air Quality, if optional CO2 sensor is installed,
when the outside conditions are suitable.
The following conditions must be true for economizer
operation:
S Indoor Fan has been on for at least 30 seconds.
S Enthalpy is Low if the Enthalpy input is enabled.
S SAT reading is available.
S OAT reading is available.
S SPT reading is available.
S OAT <= High OAT economizer lockout configuration
(default = 75).
S OAT <= SPT
If any of the mentioned conditions are not true, the
economizer will be set to its configured minimum
position. The minimum damper position can be
overridden by the IAQ routine described later in this
section.
If the above conditions are true, the Economizer control
will calculate a damper position starting with a minimum
vent position and based on current space temperature and
a setpoint that is halfway between the effective cool and
heat setpoints. If the SAT drops below the cooling low
supply air setpoint (+ 5_F), the economizer will ramp
down to minimum position.
Power Exhaust
If RTU-- OPEN is also controlling an exhaust fan, it can be
enabled based on damper position or by occupancy. If
configured for continuous occupied operation, it will be
energized whenever the controller is in the occupied mode
and disabled when in the unoccupied mode. If configured
for damper position control, it will be energized whenever
the economizer exceeds the power exhaust setpoint and
disabled when the economizer drops below the setpoint by
a fixed hysteresis of 10%.
Heating
The heat outputs are controlled by the Heating Control
PID Loop and Heating Stages Capacity algorithm. They
will be used to calculate the desired number of stages
needed to satisfy the space by comparing the SPT to the
Occupied Heat Setpoint the T56 slider offset when
occupied and the Unoccupied Heat Setpoint plus the T56
slider offset if unoccupied. The following conditions must
be true in order for this algorithm to run:
S Indoor Fan has been ON for at least 30 seconds.
S Cool mode is not active and the time guard between
modes equals zero.
S If occupied and SPT <(occupied heat setpoint plus T56
slider offset)
S SPT and supply air temperature values are available
S If it is unoccupied and the SPT < (unoccupied heat
setpoint plus T56 slider offset). The indoor fan will be
turned on by the staging algorithm.
S OAT < High OAT lockout temperature.
18
If all of the above conditions are met, the controller uses a
PID logic loop to energize or de-- energize heat outputs to
satisfy the heat demand. If the SAT begins to exceed the
high supply air setpoint, a ramping function will cause the
Heat Stages Capacity algorithm to decrease the number of
stages until the SAT has dropped below the setpoint.
There is a fixed one minute minimum on time and a one
minute off time for each heat output. Heat staging has a 2
minute stage up and 30 second stage down delay.
Heat pump operation is the same as above except for what
is explained below. There is a fixed 3 minute on and 5
minute off time for the first heat stage output, and a one
minute on and one minute off time for the second heat
stage output. There is a 10 minute minimum stage up
delay if the heat demand is <= 3_F, and a 2 minute
minimum stage up delay if heat demand is > 3_F. The
stage down delay is still 30 seconds. If the Compressor
Safety Alarm is active, the second heat stage will come on
with the first stage with no delay.
Indoor Air Quality
If the optional indoor air quality sensor is installed, the
RTU-- OPEN will maintain indoor air quality within the
space at the user configured differential set point. The set
point is the difference between the indoor air quality and
an optional outdoor air quality sensor. If the outdoor air
quality is not present then a fixed value of 400ppm is
used. The following conditions must be true in order for
this algorithm to run:
S The mode is occupied.
S Indoor Fan has been ON for at least 30 seconds.
S Indoor Air Quality sensor has a valid reading.
As air quality within the space changes, the minimum
position of the economizer damper will be changed thus
allowing more or less outdoor air into the space depending
on the relationship of the indoor air quality to the
differential setpoint. If all the above conditions are true,
the IAQ algorithm will run and calculates an IAQ
minimum position value using a PID loop. The IAQ
minimum damper position is then compared against the
user configured economizer minimum position and the
greatest value becomes the final minimum damper
position of the economizer output.
If the calculated IAQ minimum position is greater than
the DCV Max Vent Damper Pos configuration, then it will
be clamped to the configured value.
Dehumidification
The RTU-- OPEN will provide occupied and unoccupied
dehumidification only on units that are equipped with the
Humidi-- MiZert option from the factory. This function
requires a space relative humidity sensor or a humidistat
for control. The space relative humidity senor can be
installed and configured as one of the two analog input
channels (inputs 1 or 2 on J4), or a humidistat can be
installed and configured as switch input 9 on J5. When
using a relative humidity sensor to control
dehumidification,
occupied
or
unoccupied
dehumidification setpoints are use accordingly. When
using a humidistat, setpoints are not used and the
dehumidification call comes when the humidistat
indicates high humidity.
When the indoor relative humidity becomes greater then
the dehumidification setpoint (or switches from low to
high), a dehumidification demand will acknowledged.
Compressor state is monitored and time guards are
honored. If a compressor was just turned off prior to the
dehum call the dehumidification output will be delayed
the 5 minute minimum off time of the compressor. When
ok to dehumidify, the dehumidification output (J11-- 7, 8)
will be energized. This will bring on the supply fan, all
compressors, and the dehumidification relay placing the
unit in Hot Gas Reheat dehumidification mode. If
dehumidification is called for during cooling or cooling is
called for during dehumidification, the unit will run in
Subcooling dehumidification mode. Individual unit
circuits can be in different dehumidification modes based
on the demand. Refer to the base units operation for
additional information.
NOTE: There is a fixed 5% hysteresis that the indoor
relative humidity must drop below the active setpoint to
end the dehumidification mode and de-- energize the
dehumidification output. The output will also de-- energize
if the fan relay is de-- energized.
Demand Limit
If the RTU-- OPEN receives a level 1 (one degree offset), 2
(two degree offset), or a 3 (4 degree offset) to the BACnet
demand limit variable, the controller will outwardly
expand the heating and cooling setpoints by the
configured demand limit setpoint value and remain in
effect until the BACnet demand limit variable receives a 0
value.
Unoccupied Free Cooling
When the unit is equipped with an economizer, the control
can run a night time free cooling (NTFC) mode called
Unocc Free Cooling. In this mode the damper is utilized
to bring in outdoor air for free cooling during unoccupied
periods. The following conditions must be true for
unoccupied free cooling to operate:
S Unocc Free Cool Enable set to Enable
S The system is unoccupied
S The outside air temperature is below the Economizer
High OAT Lockout Temp
S The outside air temperature is less than the space
temperature
S Enthalpy (if enabled) is Low
When the RTU-- OPEN schedule is unoccupied and the
space temperature rises at least 1 degree above the
Occupied Cooling Setpoint, the supply fan starts. The
economizer damper opens as necessary to cool the space.
The RTU-- OPEN continues to operate in this mode until
the space is satisfied or the outside air conditions are no
longer suitable for free cooling.
19
Optimal Start
Door Switch
The RTU-- OPEN may utilize Optimal Start, which adjusts
the effective setpoints to achieve the occupied setpoints
by the time scheduled occupancy begins. The Optimal
Start recovery period may begin as early as 4 hours prior
to occupancy. The algorithm works by moving the
unoccupied setpoints toward the occupied setpoints. The
rate at which the setpoints move is based on the outside
air temperature, design temperatures, and capacities. The
following conditions must be true for unoccupied free
cooling to operate:
S Under SETPOINT, Optimal Start Value must be set
greater than zero and less than or equal to four (0
disables Optimal Start.)
S The system is unoccupied
S The RTU-- OPEN has a valid outside air temperature
S The RTU-- OPEN is running occupancy based on a
schedule, were next time occupied is known.
A Door Contact may be configured on any unused binary
input. A typical application is an occupancy sensor
mounted within the space served by a single zone rooftop.
Door Contact disables mechanical cooling and electric or
gas heating, when active. Economizer cooling, if
available, continues to operate.
Fire Shutdown
Fire Shutdown may be configured on Binary Input 5. A
typical application involves a smoke detector or fire
shutdown contact, which, when active, immediately shuts
down equipment operation.
Compressor Safety
Compressor Safety may be configured on Binary Input 3.
A compressor safety tripped indicator circuit is available
on most Carrier rooftop equipment. A Compressor Safety
Alarm indicates that the equipment requires attention.
Cooling, heating, and supply fan outputs are not
interrupted except where the RTU-- OPEN is configured
for Heat Pump operation. When configured for Heat
Pump, and in the heating mode, a compressor safety fault
will cause the available stages of electric heating to be
enabled in place of mechanical heating. Normal operation
resumes when the compressor safety circuit is
de-- energized.
Fan Status
Fan Status may be configured on any unused binary input
channel. A typical application would be an airflow switch,
current sensing relay, or other device that provides a
supply fan running verification. Enabling this function
displays the supply fan’s status on the equipment graphic.
If the controller loses fan status during operation, heating
and cooling are disabled, the economizer damper (if
available) is closed, and an alarm for loss of status is
indicated. If the fan status is on when the controller is
commanding the fan off, the unit remains in the off state.
An alarm is generated indicating that the fan is running
when it should be off.
Filter Status
Filter status may be configured on any unused binary
input channel. A typical application is a differential
pressure switch that senses the pressure drop across a filter
bank. When the pressure across the filter bank exceeds the
setpoint of the differential pressure switch, the Filter
status is displayed as Dirty on the controller graphic. An
alarm indicates a dirty filter.
Linkage
The RTU-- OPEN may serve as an air source to an OPEN
Variable Volume Terminal (VVT) system. When the
RTU-- OPEN is part of a VVT system and the controllers
are wired together to form a network, the controllers may
use a method of communication known as Linkaget.
Linkage is a method by which an air source and its
subordinate zone terminals exchange data to form a
coordinated HVAC system. The system’s air source
controller, zone controllers, and bypass controller are
linked so that their data exchange can be managed by one
zone controller configured as the VVT Master. The VVT
Master gathers the following information from the slave
zone controllers:
S occupancy status
S setpoints
S zone temperature
S relative humidity
S CO2 level
S damper position
S optimal start data
The VVT Master performs mathematical calculations and
algorithms on the data and then sends the composite
information to the air source. The VVT Master receives
information from the air source such as mode, supply air
temperature, and outside air temperature, and passes that
information to all linked controllers.
Linkage Air Source Modes
In a linked system, the air source determines its operating
mode and qualifies that mode based on its own Supply Air
Temperature (SAT). The following modes can be sent by
the air source depending on its configuration:
S Off – Air source fan is off
S Fan Only – Air source fan is on and providing
ventilation (neutral SAT) without heating or cooling
S Economizer Cooling – Air source fan is on and
providing cooling, using economizer only
S Cooling – Air source fan is on and cooling is provided
by economizer and mechanical cooling
S Heating – Air source fan is on and heating is provided
(gas or electric)
S Dehumidification – Air source fan is on and
Humidi-- MiZer] is active
S Test – The RTU Open Service Test mode is active
S Shutdown – Air source fan is off due to Safety Chain,
Fire Shutdown, or invalid SAT sensor
S Unocc Free Cooling – Air source fan is on, with the
economizer providing cooling while unoccupied
20
TROUBLESHOOTING
Table 2 – Thermistor Resistance vs Temperature
Values for Space Temperature Sensor, Supply Air
Temperature Sensor, and Outdoor Air Temperature
Sensor
General
The RTU-- OPEN controller acts as an intelligent
imbedded thermostat to the rooftop unit, but can be
monitored and controlled from I-- Vu Open (Linkage) or a
3rd party network. This causes the system as a whole to be
troubleshot from three points of view. The three parts to
the system are the rooftop unit, the OPEN controller, and
the network connected. Determining which part needs to
be troubleshot is the first step.
The OPEN controller can be used to troubleshoot the
rooftop unit and/or itself with service test, communicating
LED’s, and built in alarms. Disconnecting the
RTU-- OPEN from the network may also help
troubleshooting the controller and rooftop unit. Third
Party Network troubleshooting may also be required. For
base unit troubleshooting, refer to specific base unit
Service Maintenance manual.
There is an on-- board battery that is used for RAM and
clock back-- up. It is a 3-- volt lithium battery (CR2032).
The average life is 7 years with a minimum of 10,000
hours of back-- up. When the RTU-- OPEN board is
powered up, the battery is not being used. If power is lost,
the battery backs up the time clock. Battery replacement
should be done with the board powered up.
TEMP
(C)
---40
---35
---30
---25
---20
---15
---10
---5
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
Thermistor Troubleshooting
RTU-OPEN uses thermistors to sense temperatures for
control operation of the unit. Resistances at various
temperatures are listed in Table 2. Thermistor pin
connections are shown in Table 1. Thermistors are used
for supply air temperature (SAT), outdoor air temperature
(OAT), and space temperature (SPT) and all must be a 10
kilo-ohm type II sensor.
To check accuracy, use a high quality digital
volt-ohmmeter. Connect the meter to the thermistor leads
to obtain a resistance value. Use Table 2 to convert that
resistance to a temperature. Next step is to measure
temperature at probe location with an accurate
thermocouple-type temperature-measuring instrument.
Temperature measured by thermocouple and temperature
determined from thermistor voltage reading should be
close, within 5_F if care was taken in applying
thermocouple and taking readings. If a sensor must be
corrected, use the RTU-OPEN’s calibration function to
offset the temperature reading.
TEMP
(F)
---40
---31
---22
---13
---4
5
14
23
32
41
50
59
68
77
86
95
104
113
122
131
140
149
158
RESISTANCE
(Ohms)
335,651
242,195
176,683
130,243
96,974
72,895
55,298
42,315
32,651
25,395
19,903
15,714
12,494
10,000
8,056
6,530
5,325
4,367
3,601
2,985
2,487
2,082
1,752
Software Version
During Start-up and throughout the life of the equipment,
it may be necessary to obtain the RTU-OPEN’s software
version. To do this a Modstat must be run on the
controller. This can be done from the BACview user
interface by holding the function (FN) key and pressing
the period (.) key. An example of the beginning lines of a
Modstat is shown in Fig. 16. The application software
version shows the current running software of the board.
In this case the rtu_open-20100409 refers to RTU-OPEN
software version 20100409. This 8 digit number refers to
a date (YYYYMMDD). The first 4 digits are the year
(2010) and the month and day (0409), so this version is
April 9th 2010.
21
C10825
Fig. 16 -- Example Modstat
Communication LED’s
The LED’s indicate if the controller is speaking to the
devices on the network. The LED’s should reflect
communication traffic based on the baud rate set. The
higher the baud rate the more solid the LED’s will appear.
Table 3 – LED’s
The LED’s on the RTU-- OPEN show the status of certain functions
If this LED is on...
Status is...
Power
The RTU--- OPEN has power
Rx
The RTU--- OPEN is receiving data from the network segment
Tx
The RTU--- OPEN is transmitting data over the network segment
DO#
The digital output is active
The Run and Error LED’s indicate control module and network status
If Run LED shows...
And Error LED shows...
Status is...
2 flashes per second
Off
Normal
2 flashes per second
2 flashes, alternating with Run LED
Five minute auto--- restart delay after system error
2 flashes per second
3 flashes, then off
Control module has just been formatted
2 flashes per second
4 flashes, then pause
Two or more devices on this network have the same
ARC156 network address
2 flashes per second
On
Exec halted after frequent system errors or control programs halted
5 flashes per second
On
Exec start--- up aborted, Boot is running
5 flashes per second
Off
Firmware transfer in progress, Boot is running
7 flashes per second
7 flashes per second, alternating with
Run LED
Ten second recovery period after brownout
14 flashes per second
14 flashes per second, alternating with
Run LED
Brownout
On
On
Failure. Try the following solutions:
--- Turn the RTU--- OPEN off, then on.
--- Format the RTU--- OPEN.
--- Download memory to the RTU--- OPEN.
--- Replace the RTU--- OPEN.
22
Table 4 – RTU--OPEN Alarms
POINT NAME
BACnet Object
NAME
ACTION TAKEN BY
CONTROL
RESET METHOD
Safety Chain
safety_alarm
Immediate Shutdown
Automatic
Fire Shutdown
fire_alarm
Immediate Shutdown
Automatic
Supply Fan Failure
sfan_fail_alarm
Immediately disable
Operation
Automatic
Supply Fan in Hand
sfan_hand_alarm
Ramp down Operations
Automatic
Compressor Safety
comp_alarm
Alert Generated
Automatic
Space Temp Sensor
spt_fail
Ramp down Operations
Automatic
Supply Air Temp
Sensor
sat_alarm
Economizer Disabled
Automatic
Outdoor Air Temp
Sensor Alarm
oat_alarm
Economizer and Low ambient
DX cooling lockout disabled.
Automatic
Space Relative
Humidity Sensor
sprh_alarm
Dehumidification disabled
Automatic
IAQ Sensor
iaq_alarm
No IAQ Operation
Automatic
OAQ Sensor
oaq_alarm
Set OAQ to 400
Automatic
Space Temperature
spt_alrm_status
Alert Generated
Automatic
Alarming
Temperature
Alarm Limit
Exceeded
High Supply Air
Temperature
Low Supply Air
Temperature
spt_alrm_temp
spt_alrm_lmt
Shows temperature that
caused alarm
Shows the limit that was exceeded
N/A
N/A
N/A
N/A
sat_hi_alarm
Alert Generated
Automatic
sat_lo_alarm
Alert Generated
Automatic
Setpoint Slider
slidepot_alarm
Set Offset to zero
Automatic
Switch Configuration
di_cfg_alarm
Disable only wrong switch
functions
Configure correctly
Analog Input
Configuration
ai_cfg_alarm
Disable 4 selectable analog
inputs
Configure correctly
sprh_hi_alarm
Alert Generated
Automatic
sprh_lo_alarm
Alert Generated
Automatic
High CO2
co2_alarm
Alert Generated
Automatic
Supply Fan Runtime
sfan_rntm_alarm
Alert Generated
zero the timer
Alert Generated
zero the timer
Alert Generated
zero the timer
High Space Relative
Humidity
Low Space Relative
Humidity
Compressor 1 Runtime
Compressor 2 Runtime
comp1_rntm_alar
m
comp2_rntm_alar
m
Filter
filter_alarm
Alert Generated
Automatic / reset
timer
Airside Linkage Alarm
air_linkage_fail
Alert Generated
Automatic
23
PROBABLE CAUSE
Over load Indoor Fan or Electric
Heater overheat
Smoke detected by smoke detector or configuration incorrect
Tripped Circuit Breaker, Broken
belt, Bad indoor fan motor, Configuration incorrect, Bad fan
status switch.
Bad Fan Status Switch, Configuration incorrect.
Compressor would not start
Faulty, shorted, or open thermistor caused by wiring error or
loose connection.
Faulty, shorted, or open thermistor caused by wiring error or
loose connection.
Faulty, shorted, or open thermistor caused by wiring error or
loose connection.
Sensor reading is out of range.
Bad sensor, bad wiring, or sensor
configured incorrectly.
Sensor reading is out of range.
Bad sensor, bad wiring, or sensor
configured incorrectly.
Sensor reading is out of range.
Bad sensor, bad wiring, or sensor
configured incorrectly.
Space value is less then the low
allowed value or Space value is
greater then the high allowed
value
SAT is greater then the configuration for more then 5 minutes
SAT is less then the configuration
for more then 5 minutes
STO sensor is open for more then
5 seconds
More then one discrete input is
configured to provide the same
function.
More then one analog input is
configured to provide the same
function.
IRH is greater then the configuration for more then 15 minutes
IRH is less then the configuration
for more then 5 minutes
CO2 reading is above the configuration for 1 minute
Supply fan run time exceeded
user defined limit
Compressor run time limit is exceeded
Compressor run time limit is exceeded
Dirty Filter, supply fan run time exceeded, filter switch configuration
wrong.
Linkage communication failed
Alarms
Space Temp Sensor
Alarms are provided to indicate a possible problem with
the controller or unit. Alarms can be checked through a
network and/or the local access device. All alarms are
listed in Table 4 with name, object name, action taken by
control, reset method, and possible cause. Some alarms
can occur based on specific configurations.
This alarm occurs if the space sensor wired to the
RTU-OPEN is disconnected or shorted for more than 10
seconds. When this occurs the Unit Status will be
Shutdown and the System Mode will be Run. Sensor,
sensor connections, wiring, board connection, and
configurations should be checked for faults or errors.
Alarm will reset automatically when cause is fixed.
Safety Chain Alarm
This alarm occurs immediately if the supply-fan internal
overload trips or if an electric-heat limit switch trips. The
Unit Status will be Shutdown and the System Mode will
be Disable. All unit operations stop immediately and will
not restart until the alarm automatically clears. There are
no configurations for this alarm; it is all based on internal
wiring. This alarm will not occur if Fire Shutdown Alarm
is active. Normal operation resumes when the safety
chain circuit is complete.
Supply Air Temp Sensor
Fire Shutdown Alarm
This alarm indicates a shorted or open circuit in the OAT
input. Cooling, heating, and supply fan operation
continues. OAT lockouts will not operate while the sensor
is in alarm. Economizer cooling and optimal start
functions are disabled. Normal operation resumes when
the controller detects a valid sensor.
This alarm occurs immediately when the smoke detector
senses smoke. The Unit Status will be Shutdown and the
System Mode will be Disable. All unit operations stop
immediately and will not restart until the alarm
automatically clears. If there is not a smoke detector
installed or the smoke detector did not trip, check input
configurations. NOTE: The default function for input 5 is
a normally open Fire Shutdown input.
Supply Fan Failure
This alarm occurs when the indoor fan is being command
on and the fan status switch feedback is showing the fan
off. This will end current operating mode and disable unit
operation. This alarm requires a fan status switch to be
configured on one of the inputs.
Supply Fan in Hand
This alarm occurs when the indoor fan is being
commanded off and the fan status switch feedback is
showing the fan is on. This will prevent any operating
mode and disable unit operation. This alarm requires a
fan status switch to be configured on one of the inputs.
Compressor Safety
This alarm indicates the base unit’s compressor safety
circuit is energized. Cooling, heating, and supply fan
outputs are not interrupted except when the RTU-OPEN is
configured for Heat Pump. Normal operation resumes
when the compressor safety circuit is de-energized. If the
Heat Pump is in the heating mode, it will automatically
replace the compressor stage(s) with the equivalent
number of auxiliary heat stages, as available.
For Heat Pump’s with O/B, when configured for two
stages of aux heat and two compressors, Compressor 1 is
replaced by Aux Heat Stage 1 and Compressor 2 is
replaced by Aux Heat Stage 2. The compressor output
stays on when the safety alarm is present. For cooling, the
alarm indicates the compressors are down.
This alarm occurs immediately when the supply air
temperature sensor wired to the RTU-OPEN is
disconnected or shorted. When this occurs the Unit Status
will be Shutdown and the System Mode will be Run.
Sensor, sensor connections, wiring, board connection, and
configurations should be checked for faults or errors.
Alarm will reset automatically when cause is fixed.
Outdoor Air Temp Sensor Alarm
Space Relative Humidity Sensor
This alarm indicates the mA input at the associated
channel falls below 3.5 mA or rises above 21 mA.
Cooling, heating, and supply fan operation continues,
however, the controller’s Humidi-MiZert binary output
is disabled until the fault condition is corrected.
IAQ Sensor
This alarm indicates the mA input at the associated
channel falls below 3.5 mA or rises above 21 mA.
Cooling, heating, and supply fan operation continues.
However, the controller’s IAQ control function is disabled
until the fault condition is corrected.
OAQ Sensor
This alarm indicates the mA input at the associated
channel falls below 3.5 mA or rises above 21 mA.
Cooling, heating, and supply fan operation continues.
However, the controller’s IAQ control function uses
400ppm as the fixed outdoor air CO2 level until the fault
condition is corrected.
Space Temperature
When Occupied, a Low Space Temperature alarm is
generated if the space temperature falls below the lower
limit or a High Space Temperature alarm is generated if
the space temperature rises above the upper limit.
When Unoccupied, an unoccupied low space temperature
alarm is generated when the space temperature falls below
the alarm configuration Unoccupied Low SPT Alarm
Limit or an unoccupied high space temperature alarm is
generated when the space temperature rises above the
alarm configuration Unoccupied High SPT Alarm Limit.
24
The following values are related to the Space Temperature
alarm:
Alarming Temperature – This variable displays the
value of the space temperature that is in alarm and is only
visible when the space temperature is in an alarm state.
Alarm Limit Exceeded – This variable displays the value
of the alarm setpoint that is exceeded by the alarming
space temperature and is only visible when the space
temperature is in an alarm state.
High Supply Air Temperature
This alarm indicates the supply air temperature exceeds
the alarm configuration High SAT Alarm Limit for 5
minutes. This alarm is inhibited until the RTU has been
running for 30 minutes to allow for system stabilization
after startup.
Low Supply Air Temperature
This alarm indicates the supply air temperature falls
below the alarm configuration Low SAT Alarm Limit for
5 minutes. This alarm is inhibited until the RTU has been
running for 30 minutes to allow for system stabilization
after startup.
Setpoint Slider
This alarm indicates an open circuit is detected at the
setpoint adjustment input. This can only occur if the
Space Sensor Type is set to T56. Note that only an open
circuit results in an alarm. A short across this input offsets
the setpoints negatively by the amount configured by
configuration Setpoint Adjustment Range.
Switch Configuration
This occurs if more than one binary input (inputs 3, 5, 8,
and 9) is configured for the same function. When this
happens the two inputs (or more) configured wrong will
be disabled as an inputs. This alarm will automatically be
cleared when configuration is corrected.
An example of this would be: Input 3 = Compressor
Safety, input 5 = Fan Status, input 8 = Fan Status, and
input 9 = Humidistat; the alarm would be active, unit
would run, compressor safety and humidistat would
function normally, and Fan Status (inputs 5 & 8) will be
interpreted as “No Function.”
Analog Input Configuration
This occurs if more than one analog input (inputs 1 & 2)
is configured for the same sensor. When this happens the
two inputs will be disabled as inputs. This alarm will
automatically be cleared when configuration is corrected.
An example of this would be: Input 1 = IAQ Sensor, input
2 = IAQ Sensor; the alarm would be active, unit would
run, but the IAQ Sensor (inputs 1 & 2) will be interpreted
as “No Function.”
High Space Relative Humidity
This alarm indicates the space humidity exceeds the alarm
configuration High Space Humidity Alarm Limit for 10
minutes. This alarm is inhibited until the RTU runs for 15
minutes to allow for system stabilization after startup.
Low Space Relative Humidity
This alarm indicates the space humidity falls below the
alarm configuration Low Space Humidity Alarm Limit for
5 minutes. This alarm is inhibited until the RTU runs for 5
minutes to allow for system stabilization after startup.
High CO2
This alarm indicates the space CO2 level exceeds the
alarm configuration Occupied High CO2 Alarm Limit for
1-minute. This alarm will be inhibited until the RTU has
been running for 2-minutes to allow for system
stabilization after startup.
Supply Fan Runtime
This alarm indicates the accumulated runtime exceeds the
unit configuration Supply Fan Service Alarm Timer value
(when not set to 0). This alarm is most commonly used to
indicate an equipment maintenance interval is due. The
supply fan runtime accumulator may be reset by setting
the maintenance point Reset Supply Fan Runtime Alarm
to Clear, and then back to Run – acknowledging each
selection by clicking the OK button when it appears.
Setting unit configuration Supply Fan Service Timer value
to 0 disables the supply fan runtime alarm function.
Compressor 1 Runtime
This alarm indicates the accumulated runtime exceeds the
unit configuration Compressor 1 Service Alarm Timer
value (when not set to 0). This alarm is most commonly
used to indicate an equipment maintenance interval is due.
The Compressor 1 Runtime accumulator may be reset by
setting the maintenance point Reset Comp 1 Runtime
Alarm to Clear, and then back to Run – acknowledging
each selection by clicking the OK button when it appears.
Setting unit configuration Compressor 1 Service Timer
value to 0 disables the Compressor 1 Runtime alarm
function.
Compressor 2 Runtime
This alarm indicates the accumulated runtime exceeds the
unit configuration Compressor 2 Service Alarm Timer
value (when not set to 0). This alarm is most commonly
used to indicate an equipment maintenance interval is due.
The Compressor 2 runtime accumulator may be reset by
setting the maintenance point Reset Comp 2 Runtime
Alarm to Clear, and then back to Run – acknowledging
each selection by clicking the OK button when it appears.
Setting unit configuration Compressor 2 Service Timer
value to 0 disables the Compressor 2 runtime alarm
function. Note that this function is unavailable if the
service configuration Compressor Stages value is not set
to Two Stages.
Filter
This alarm indicates the accumulated runtime exceeds the
unit configuration Filter Service Alarm Timer value
(when not set to 0). This alarm is most commonly used to
indicate a filter replacement is due. Reset the filter service
runtime accumulator by setting the maintenance point
Reset Filter Runtime Alarm to On, back to Off, and
clicking the OK button after each setting. Setting unit
configuration Filter Service Alarm Timer value to 0
disables the filter service alarm function.
25
Third Party Networking
Airside Linkage Alarm
This alarm indicates that RTU-OPEN was connected to a
zoned system called Linkaget and it lost
communications with its linkage master or if it receives
invalid data.
Third
party
communication
and
networking
troubleshooting should be done by or with assistance from
the front end 3rd party technician. A Module Status
Report (Modstat) can be run from the BACview6 or
Virtual BACview (see Table 5 to perform). This lists
information about the board status and networking state.
For basic troubleshooting, see Table 6. Refer to the
RTU-- OPEN 3rd Party Integration Guide for additional
information.
Table 5 – Manufacture Date
When troubleshooting, you may need to know a control module’s manufacture date.
Obtain the manufacture date from
a...
Notes
Module status report (modstat)
To obtain a modstat with BACview6:
1. Press Function (FN) key and hold.
2. Then press period (.)
3. Release both buttons.
The report shows the date under Main board hardware.
Sticker on the control board
“Serial No: ORTYMxxxxN”
(Bar Coded & Typed Number)
The serial numbers are unique and contain embedded information:
“ORT”
--These first three digits are unique to RTU--- OPEN and are used as an identifier.
“YM”
--These two digits identify the last digit of the year and month (in hex, A=10/Oct)
of manufacture. “74” would represent a date of manufacture of “April 2007”.
“xxxx”
--These four digits represent the sequential number of units produced for a given
product for the mentioned manufacturing time period.
“N”
--This final digit represents the decade and toggles between “N” and “M” every
ten years.
Table 6 – Basic Protocol Troubleshooting
Problem
No communication with 3rd
party vendor
Possible cause
Incorrect settings on SW1, SW2 and SW3
Corrective action
Verify and correct switch settings. Cycle
power to RTU--- OPEN after changing
switch settings.
RS485 Port has no voltage output
Verify RTU--- OPEN has correct power
supply.
(check with RTU--- OPEN disconnected from RS485
communication bus):
• Bacnet @ 9600/19.2K --- .01 to .045vdc
• Bacnet @ 38.4K --- .06 to .09vdc
Possible bad driver on board.
Check RS485 bus for external voltage
before reconnecting to the bus.
• Bacnet @ 76.8K --- .1vdc
• Modbus @ 9600 --- 76.8K --- .124vdc
• N2 @ 9600 --- .124vdc
Verify devices are daisy chained and repeaters and bias
terminators are correctly installed.
26
Check 3rd party vendor RS485
communication wiring guidelines and
troubleshooting procedures.
APPENDIX A -- USER INTERFACE MENUS
Field Assistant Navigation
Properties
Equipment
Status
Configuration
Unit Configuration
Setpoints
Alarm Configuration
Service Configuration
Maintenance
Alarms
Linkage
BACview Navigation
STANDBY
HOME
SYSTEM
SETTINGS
Login
BACnet
Keypad
UserPw
Network
ClockSet
CONFIG
STATUS
LINKAGE
MAINT ALARM
SETPOINT
Sched
Alarm
Weekly schedule
Exceptions
DST
TimeMstr
ALARMS
LINKAGE
UNIT
Clockset
SETPOINT
CALIBRATE
INPUT
SETPOINT
Sched
SERVICE
LINKAGE
TEST
Modstat screen only reached by (FN + .)
27
APPENDIX A -- USER INTERFACE MENUS (CON’T)
Standby BACview Screen and Login Screen
BACview MENU
STANDBY
POINT NAME
Operating Mode
Space Temperature
HOME
LOGIN/LOGOUT
BACnet OBJECT
RTU--- OPEN
run_status
space_temp
Press any key to activate
Select function below
Admin or User
Password
VALUE
1=Off
2=Fan Only
3=Economizer
4=Cooling
5=Heating
6=Dehumidification
7=Test
8=Shutdown
9=Unocc Free Cooling
(NTFC)
xxx ° F
user: 0000 Admin:1111
System Settings Menu
BACview MENU
HOME
SYSTEM SETTINGS
BACnet
Keypad
UserPw
Network
ClockSet
POINT NAME
BACnet Device Instance:
Base BACnet Device ID:
Autogenerate Device ID?
Inactivity Timeout:
BACnet Write Priority:
View/Set User
Password:
Max Masters
Max Info Frames
APDU Timeout (ms)
APDU Retries
MS/TP Baud Rate
BACnet OBJECT
RANGE
Select function below
SYSTEM SETTINGS
xxxxxxx
xxxxxxx
Y/N
Keypad Configuration
1--- 255 minutes
0--- 16
xxxx
NETWORK
this_device/64
1--- 127
this_device/63
1--- 999
this_device/11
1--- 10000
this_device/73
1--- 10
this_device/4161(1)
9600--- 76800
Set Current Time/Date (24 hr clock)
DEFAULT
1610100
1610100
Y
10
0
0000
127
10
3000
3
76800
Time (hh:mm:ss):
Date (dd --- mmm--- yy):
DST
DST
Start Time:
Amount:
Entry #
Beg (mm--- dd --- yy)
End (mm--- dd --- yy)
BACnet Time Master
TimeMstr
No Broadcast
Local Broadcast
Global Broadcast
1--- 9999 minutes
Time Sync Mode
Time Sync Interval
28
No Broadcast
5
APPENDIX A -- USER INTERFACE MENUS (CON’T)
Status Menus
BACview MENU
POINT NAME
HOME
STATUS
System Mode
BACnet OBJECT
Select function below
STATUS
mode_status
Operating Mode
run_status
Supply Fan Status
Space Temperature --- Prime Variable
Supply Air Temperature
Outdoor Air Temperature
Space Relative Humidity
Indoor Air CO2
Outdoor Air CO2
Economizer Output
sfan_status
LINKAGE
Airside Linkage Status
Number of Providers
Occupancy Status
Space Temperature
Occupied Cooling Setpoint
Occupied Heating Setpoint
Unoccupied Cooling Setpoint
Unoccupied Heating Setpoint
Indoor Air CO2 (ppm)
Space Relative Humidity
space_temp
sa_temp
oa_temp
space_rh
iaq
oaq
econ_output
AIR LINKAGE
a_link_status
link_collector/4602
link_occ
link_spt
link_occ_cl_stpt
link_occ_ht_stpt
link_unocc_cl_stpt
link_unocc_ht_stpt
link_iaq
link_sprh
29
RANGE
FIELD ASSISTANT
MENU
Properties/Equipment
Status
1=Disabled
2=Test
3=Run
1=Off
2=Fan Only
3=Economizer
4=Cooling
5=Heating
6=Dehumidification
7=Test
8=Shutdown
9=Unocc Free Cooling (NTFC)
Off/Running
xxx ° F
xxx ° F
xxx ° F
0--- 100 %
0--- 5000 ppm
0--- 5000 ppm
0--- 100 %open
Linkage
Not Active/Active
xx
Unoccupied/Occupied
xxx ° F
55--- 80 ° F
55--- 80 ° F
75--- 130 ° F
55--- 85 ° F
xxxx ppm
xxx %
APPENDIX A -- USER INTERFACE MENUS (CON’T)
Configuration Menus
BACview MENU
POINT NAME
HOME
CONFIG
SETPOINT
Occupied Heating Setpoint
Occupied Cooling Setpoint
Unoccupied Heating Setpoint
Unoccupied Cooling Setpoint
Effective Cool Setpoint
Effective Heat Setpoint
Optimal Start
Occ Relative Humidity Setpoint
Sched
Unocc Relative Humidity Setpoint
DCV Max Ctrl Setpoint
Power Exhaust Setpoint
Weekly schedule
Exceptions
ALARMS
Occupied Alarm Hysteresis
Alarm Delay (min/deg)
Unoccupied Low SPT Alarm
Limit
Unoccupied High SPT Alarm
Limit
Low SAT Alarm Limit
High SAT Alarm Limit
Low Space Humidity Alarm
Limit
High Space Humidity Alarm
Limit
Occ High CO2 Alarm Limit
(ppm)
BACnet
RANGE
OBJECT
Select function below
CONFIGURATION
SETPOINTS
occ_ht_stpt
40 ---90 ° F
occ_cl_stpt
55 ---99 ° F
unocc_ht_stpt
40 ---90 ° F
unocc_cl_stpt
55 ---99 ° F
eff_cl_stpt
xx ° F
eff_ht_stpt
xx ° F
optm_start
0 ---4 hr
occ_dehum_stpt
0 ---unocc setpoint %rh
unocc_de30 ---100 %rh
hum_stpt
iaq_stpt_max
0 ---9999 ppm
pexh_stpt
20 ---90 %Open
MON ---SUN
ALARM CONFIGURATION
SPACE TEMPERATURE ALARM
occ_spt_alrm_hys
2 ---20° F
t
spt_alrm_delay
0 ---30 minutes
uno_spt_alrm_lo_l
35 ---90 ° F
mt
uno_spt_alrm_hi_l
45 ---100 ° F
mt
SUPPLY AIR TEMPERATURE ALARM
sat_lo_alrm_lim
15 ---90 ° F
sat_hi_alrm_lim
90 ---175 ° F
DEFAULT
70
74
55
90
4
60
95
650
50
none
none
3
10
45
95
35
160
30
sprh_hi_alrm_lim
70
IAQ / VENTILATION ALARM
iaq_occ_hi_lmt
0 ---9999 ppm
30
(BACview Only)
Alarm Configuration
SPACE HUMIDITY ALARM
sprh_lo_alrm_lim
0 ---99 %rh
0 ---99 %rh
FIELD ASSISTANT MENU
Properties/Equipment
Configuration
Setpoints
1200
APPENDIX A -- USER INTERFACE MENUS (CON’T)
Configuration Menus (con’t)
BACview MENU
POINT NAME
HOME
UNIT
Fan Mode
Unit Start Delay
Fan Off Delay
Minimum Cooling SAT
Maximum Heating SAT
Vent Dmpr Pos / DCV Min Pos
DCV Max Vent Damper Pos
S Fan Service Alarm Timer
Comp 1 Service Alarm Timer
Comp 2 Service Alarm Timer
Filter Service Alarm Timer
Pushbutton Override
Setpoint Adjustment
Setpoint Adjustment Range
Cooling Lockout Temperature
Economizer High OAT Lockout
Temp
HP Rev Cycle Lockout Temp
Heating Lockout Temperature
Unocc Free Cool Enable
Setpoint Separation
Occupancy Source
CALIBRATE
Space Temperature
Space Temp Calibration
Supply Air Temperature
Supply Air Temp Calibration
Outdoor Air Temperature
Outdoor Air Temp Calibration
BACnet
RANGE
OBJECT
Select function below
UNIT CONFIGURATION
fan_mode
1=Auto
2=Continuous
3=Always
On
start_delay
0 ---30 sec
fan_delay_off
0 ---180 sec
sat_cl_min
45 ---75 ° F
sat_ht_max
95 ---150° F
econ_min
0 ---100
%Open
iaq_dpr_max
10 ---60
%Open
sfan_service_hrs
0 ---9999 hr
comp1_ser0 ---9999 hr
vice_hrs
comp2_ser0 ---9999 hr
vice_hrs
filter_service_hrs
0 ---9999 hr
pb_enable
Disable/Enable
stpt_adj_enable
Disable/Enable
stpt_adj_range
+/ --- 0 ---5
°F
oat_cl_lockout
0 ---80° F
oat_ec_lockout
55 ---80° F
hp_rev_cycle_loc
kout
oat_ht_lockout
ntfc_ena
---20 ---30° F
35 ---150° F
Disable/Enable
min_stpt_sep
2 ---10 ° F
occ_source
1=Always
occupied
2=BACnet
Schedule
3=BAS On/
Off
4=Remote
Occ Input
SENSOR CALIBRATION
lcl_space_temp
spt_offset
---9.9 ---10° F
lcl_sa_temp
sat_offset
---9.9 ---10° F
lc_oa_temp
oat_offset
---9.9 ---10° F
31
DEFAULT
FIELD ASSISTANT MENU
Properties/Equipment
Unit Configuration
Continuous
5
90
50
120
20
50
0
0
0
600
Enable
Enable
5
45
75
---3
65
Disable
5
Always Occupied
0
0
0
APPENDIX A -- USER INTERFACE MENUS (CON’T)
Configuration Menus (con’t)
BACview MENU
POINT NAME
HOME
INPUT
Input 1 Function
Input 2 Function
Input 3 Function
Input 3 Switch Configuration
Input 5 Function
Input 5 Switch Configuration
Input 8 Function
Input 8 Switch Configuration
Input 9 Function
Input 9 Switch Configuration
Space sensor type
T5x Override Duration
BACnet
RANGE
OBJECT
Select function below
INPUT CONFIGURATION
ai1_function
1=No Sensor
2=IAO Sensor
3=OAQ Sensor
4=Space RH
Sensor
ai2_function
1=No Sensor
2=IAO Sensor
3=OAQ Sensor
4=Space RH
Sensor
di3_function
1=No Function
2=Compressor
Safety
3=Fan Status
4=Filter Status
5=Remote Occupancy
6=Door Contact
di3_type
N/O
N/C
di5_function
1=No Function
2=Fire Shutdown
3=Fan Status
4=Filter Status
5=Remote Occupancy
6=Door Contact
di5_type
N/O
N/C
di8_function
1=No Function
2=Enthalpy
Switch
3=Fan Status
4=Filter Status
5=Remote Occupancy
6=Door Contact
di8_type
N/O
N/C
di9_function
1=No Function
2=Humidistat
3=Fan Status
4=Filter Status
5=Remote Occupancy
6=Door Contact
di9_type
N/O
N/C
spt_type
1=T55
2=T56 (use for
T59)
3=SPT Sensor
ovr_dur
0 ---24 hours
32
DEFAULT
FIELD ASSISTANT MENU
Properties/Equipment
No Sensor
1 (No FIOP)
2 (FIOP)
Compressor Safety
N/O
Fire Shutdown
Unit Configuration
N/O
1 (No FIOP)
2 (FIOP)
N/O
Humidistat
N/O
T55
1
APPENDIX A -- USER INTERFACE MENUS (CON’T)
Configuration Menus (con’t)
BACview MENU
POINT NAME
HOME
SERVICE
Unit Type
(Field Assistant Only)
BACnet
RANGE
OBJECT
Select function below
SERVICE CONFIGURATION
unit_type
1=Heat/Cool
2=HP O/B Ctrl
3=HP Y1/W1
Ctrl
DEFAULT
Heat/Cool (TC and
HC models)
HP Y1/W1 Ctrl
(TCQ and HCQ
models)
One Stage (sizes
04 ---07, and
A08 ---A12)
Two Stages (sizes
08 ---30)
No (No FIOP)
Yes (FIOP)
O output type
Compressor Stages
comp_stages
One stage/ Two
Stage
Economizer Exists
econ_exist
No/Yes
Reversing Valve Type
rev_vlv_type
Heat Type
heat_type
O output type/B
output type
Electric/Gas
Number of Heat Stages
heat_stages
1 / 2 / 0 (no
heat)
Continuous Occupied Exhaust
Indoor CO2 Sensor Value @
Min mA
Indoor CO2 Sensor Value @
Max mA
Outdoor CO2 Sensor Value @
Min mA
Outdoor CO2 Sensor Value @
Max mA
System Space Temperature
System Cooling Demand Level
occ_exh
iaq_ref_lo_ppm
No/Yes
0 ---9999ppm
Gas (48 Series
Units)
Electric (50 Series
Units)
0 (50 series cooling only units)
1 (All TCQs and
HCQs, Low Nox
units, single phase
gas units,
TC04 ---09 low and
TC05 ---07 med
heat 3 phase gas
units)
2 (TC04 and
08 ---09 med,
TC05 ---09 high
heat 3 phase gas
units, HC04 ---09 3
phase gas units
and All 12 ---30 gas
units)
No
0
iaq_ref_hi_ppm
0 ---9999ppm
2000
oaq_ref_lo_ppm
0 ---9999ppm
0
oaq_ref_hi_ppm
0 ---9999ppm
2000
0 ---3
0
0 ---3
0
Disable/Enable
Disable/Enable
Disable/Enable
Disable/Enable
Disable/Enable
Disable/Enable
Disable/Enable
Disable/Enable
Disable/Enable
0 ---100 %Open
0 ---100 %
Disable
Disable
Disable
Disable
Disable
Disable
Disable
Disable
Disable
0
0
System Heating Demand Level
System Outdoor Air Temperature
TEST
Service Test
Fan Test
Compressor 1 Test
Compressor 2 Test
Heat 1 Test
Heat 2 Test
Reversing Valve Test
Dehumidification Test
Power Exhaust Test
Economizer Test
Analog Output 2 Test
system_spt
cool_demand_level
heat_demand_level
system_oat
SERVICE TEST
test_enable
fan_test
comp1_test
comp2_test
heat1_test
heat2_test
rev_vlv_test
dehum_test
pexh_test
econ_test
ao2_test
33
FIELD ASSISTANT MENU
Properties/Equipment
Service Configuration
APPENDIX A -- USER INTERFACE MENUS (CON’T)
Maintenance Menu
BACview MENU
POINT NAME
BACnet OBJECT
HOME
MAINT
Select function below
UNIT MAINTENANCE
occ_status
spt_status
Occupancy Status
Space Temp Sensor
Setpoint Adjustment
System Cooling Demand Level
System Heating Demand Level
Safety Chain Feedback
stpt_adj
cool_demand_level
heat_demand_level
safety_status
Fire Shutdown Status
Compressor Safety Status
Active Compressor Stages
Active Heat Stages
Enthalpy Status
Humidistat Input Status
Filter Status
Door Contact Status
Reset Supply Fan Runtime Alarm
Reset Comp 1 Runtime Alarm
Reset Comp 2 Runtime Alarm
Reset Filter Runtime Alarm
firedown_status
comp_status
comp_run
heat_run
enthalpy_status
humstat_status
filter_status
door_contact_status
sfan_rntm_clr
comp1_rntm_clr
comp2_rntm_clr
filter_rntm_clr
BAS On / Off
OCCUPANCY MAINTENANCE
keypad_ovrde
RANGE
Occupied/Unoccupied
1=Sensor Failure
2=SPT Sensor
3=T55/T56
4=Network
5=Airside Linkage
6=Locked Value
x °F
x
x
Off/Run Enabled
Run Enabled/Shutdown
Normal/Trouble
x
x
High/Low
Low/High
Clean/Dirty
Off/On
Run/Clear
Run/Clear
Run/Clear
Off/On
Schedule
Pushbutton Override
Occupancy Contact
Override Time Remaining
schedule
pb_status
occ_contact_status
ovrde_time
1=Inactive
2=Occupied
3=Unoccupied
Unoccupied/Occupied
Off/Active
Off/On
xxx min
Supply Fan Runtime
Compressor 1 Runtime
Compressor 2 Runtime
Filter Runtime
RUNTIME
sfan_rntm
comp1_rntm
comp2_rntm
filter_rntm
xxxxx
xxxxx
xxxxx
xxxxx
34
FIELD ASSISTANT
MENU
Properties/Equipment
Maintenance
APPENDIX A -- USER INTERFACE MENUS (CON’T)
Alarm Menus
BACview MENU
HOME
ALARM
Alarm
POINT NAME
BACnet OBJECT
Select function below
CURRENT ALARMS
Safety Chain
safety_alarm
Fire Shutdown
fire_alarm
Supply Fan Failure
sfan_fail_alarm
Supply Fan in Hand
sfan_hand_alarm
Compressor Safety
comp_alarm
Space Temp Sensor
spt_fail
Supply Air Temp Sensor
sat_alarm
Outdoor Air Temp Sensor Alarm
oat_alarm
Space Relative Humidity Sensor
sprh_alarm
IAQ Sensor
iaq_alarm
OAQ Sensor
oaq_alarm
Space Temperature
spt_alrm_status
Alarming Temperature
spt_alrm_temp
Alarm Limit Exceeded
spt_alrm_lmt
High Supply Air Temperature
sat_hi_alarm
Low Supply Air Temperature
sat_lo_alarm
Setpoint Slider
slidepot_alarm
Switch Configuration
di_cfg_alarm
Analog Input Configuration
ai_cfg_alarm
High Space Relative Humidity
sprh_hi_alarm
Low Space Relative Humidity
sprh_lo_alarm
High CO2
co2_alarm
Supply Fan Runtime
sfan_rntm_alarm
Compressor 1 Runtime
comp1_rntm_alarm
Compressor 2 Runtime
comp2_rntm_alarm
Filter
filter_alarm
Airside Linkage Alarm
air_linkage_fail
Module Event History (100 most recent)
Active Alarms
Buffer
Active Faults
Buffer
Returned --- To--- Normal (RTN)
Buffer
Manually Cleared (CLR)
Buffer
35
RANGE
FIELD ASSISTANT
MENU
Properties/Equipment
Alarms
Normal/Alarm
Normal/Alarm
Normal/Alarm
Normal/Alarm
Normal/Alarm
Normal/Alarm
Normal/Alarm
Normal/Alarm
Normal/Alarm
Normal/Alarm
Normal/Alarm
Normal/Alarm
xxx ° F
xxx ° F
Normal/Alarm
Normal/Alarm
Normal/Alarm
Normal/Alarm
Normal/Alarm
Normal/Alarm
Normal/Alarm
Normal/Alarm
Normal/Alarm
Normal/Alarm
Normal/Alarm
Clean/Dirty
Normal/Alarm
(BACview only)
APPENDIX B -- THIRD PARTY POINTS LIST
(IN ALPHABETICAL ORDER)
BACnet
Point Name
Active Compressor
Stages
Active Heat Stages
Airside Linkage
Alarm
Analog Input Configuration
BAS On / Off
Compressor 1 Relay
State
Compressor 1
Runtime
Compressor 1
Runtime
Compressor 1 Service Alarm Timer
Compressor 1 Test
Compressor 2 Relay
State
Compressor 2
Runtime
Compressor 2
Runtime
Compressor 2 Service Alarm Timer
Compressor 2 Test
Compressor Safety
Compressor Safety
Status
Continuous Occupied Exhaust
Cooling Lockout
Temperature
DCV Max Ctrl Setpoint
DCV Max Vent
Damper Pos
Dehumidification Relay State
Dehumidification Test
Door Contact Status
Economizer Exists
Economizer High
OAT Lockout Temp
Economizer Output
Economizer Test
Effective Cool Setpoint
Effective Heat Setpoint
Enthalpy (BACnet)
Enthalpy Status
Factory Test
Factory Test Analog
1 Control
Factory Test Analog
2 Control
Read/
Write
R
R
R
R
R/W
R
R
R
R/W
R/W
R
R
R
R/W
R/W
R
R
R/W
R/W
R/W
R/W
R
R/W
R
R/W
R/W
R
R/W
R
R
R/W
R
R/W
R/W
R/W
BACnet Point
Name
Modbus
OBJECT
ID
comp_run
AV:2020
heat_run
air_linkage_fail
AV:2003
ai_cfg_alarm
BV:7026
N2
LON Works
Register
#
Network
Point
Type
40031
ADF
10
40033
ADF
unsigned
int
40133
discrete
in
Register
Type
float
value
float
value
Network
Point
Address
SNVT Type
SNVT Name
11
SNVT_count_inc
(9)
SNVT_count_inc
(9)
nvoCompStages
nvoHeat
Stages
ADI
1
SNVT_count_inc
(9)
nviBASOnOff
10030
BI
30
SNVT_switch
(95)
nvoCompSafety
40043
ADF
16
SNVT_temp_p
(105)
40045
ADF
17
40047
ADF
18
10009
BI
9
SNVT_ppm (29)
SNVT_lev_percent (81)
SNVT_switch
(95)
nviCoolLckTemp
nviDCVMaxPPM
nviDCVMaxPos
nvoDehumRelay
40051
ADF
20
SNVT_lev_percent (81)
nvoEconOutput
40055
ADF
22
40057
ADF
23
BV:7030
keypad_ovrde
MSV:1001
comp_1
BV:2005
comp1_rntm
comp1_rntm_
alarm
comp1_service_hrs
comp1_test
AV:2017
comp_2
BV:2004
comp2_rntm
comp2_rntm_
alarm
comp2_service_hrs
comp2_test
AV:2018
comp_alarm
BV:7013
comp_status
BV:1008
occ_exh
BV:9002
oat_cl_lockout
AV:9002
iaq_stpt_max
AV:3013
iaq_dpr_max
AV:9011
dehum
dehum_test
door_contact_status
econ_exist
oat_ec_lockout
BV:2006
BV:81006
econ_output
econ_test
AV:2001
AV:81001
eff_cl_stpt
AV:3005
eff_ht_stpt
oae
enthalpy_status
fac_test_enable
AV:3006
BV:1901
ao1_fac_test
AV:91001
ao2_fac_test
AV:91002
BV:7014
AV:83006
BV:81005
BV:7015
AV:83007
BV:81004
float
value
float
value
float
value
discrete
in
BV:1010
BV:99001
AV:9008
float
value
float
value
float
value
BV:1002
BV:91000
36
SNVT_temp_p
(105)
SNVT_temp_p
(105)
nvoEffCoolSP
nvoEffHeatSP
APPENDIX B -- THIRD PARTY POINTS LIST (CON’T)
(IN ALPHABETICAL ORDER)
BACnet
Point Name
Factory Test Relay 1
Control
Factory Test Relay 2
Control
Factory Test Relay 3
Control
Factory Test Relay 4
Control
Factory Test Relay 5
Control
Factory Test Relay 6
Control
Factory Test Relay 7
Control
Factory Test Relay 8
Control
Fan Off Delay
Filter
Filter Runtime
Filter Service Alarm
Timer
Filter Status
Fire Shutdown
Fire Shutdown
Status
Heat Stage 1 Relay
State
Heat Stage 2 Relay
State
Heating Lockout
Temperature
High CO2
High Space Relative
Humidity
High Space Temp
Alarm
High Supply Air Temperature
HP Rev Cycle Lockout Temp
Humidistat Input
Status
IAQ Sensor
Indoor Air CO2
Indoor CO2 Sensor
Value @ Max mA
Indoor CO2 Sensor
Value @ Min mA
Read/
Write
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R
R/W
R
R
R
R
R
R/W
R
R
R
R
R/W
R
R
R
R/W
R/W
BACnet Point
Name
relay1_fac_test
relay2_fac_test
relay3_fac_test
relay4_fac_test
relay5_fac_test
relay6_fac_test
relay7_fac_test
relay8_fac_test
fan_delay_off
filter_alarm
filter_rntm
filter_service_hrs
filter_status
Modbus
OBJECT
ID
N2
Register
Type
Register
#
Network
Point
Type
discrete
in
10031
BI
LON Works
Network
Point
Address
SNVT Type
SNVT Name
BV:91001
BV:91002
BV:91003
BV:91004
BV:91005
BV:91006
BV:91007
BV:91008
AV:9024
BV:7017
AV:2015
AV:2019
BV:1004
fire_alarm
firedown_status
BV:7007
heat_1
BV:2003
heat_2
oat_ht_lockout
BV:2002
co2_alarm
BV:7016
sprh_hi_alarm
BV:7018
spt_hi_alarm
BV:7011
sat_hi_alarm
hp_rev_cycle_
lockout
humstat_status
BV:7020
iaq_alarm
BV:7005
iaq
iaq_ref_hi_pp
m
iaq_ref_lo_pp
m
AV:1009
31
SNVT_switch
(95)
nvoFilter
nviFilterAlmTime
float
value
40067
ADF
28
SNVT_time_hour
(124)
discrete
in
10032
BI
32
SNVT_switch
(95)
nvoFireShutdown
40069
ADF
29
nviHeatLckTemp
10033
BI
33
10034
BI
34
10035
BI
35
10036
BI
36
40071
ADF
30
SNVT_temp_p
(105)
SNVT_switch
(95)
SNVT_switch
(95)
SNVT_switch
(95)
SNVT_switch
(95)
SNVT_temp_p
(105)
10037
BI
37
SNVT_switch
(95)
nvoIAQSensor
40073
ADF
31
SNVT_ppm (29)
nvoIAQ
BV:1005
AV:9003
AV:9004
float
value
discrete
in
discrete
in
discrete
in
discrete
in
float
value
nvoHiCO2Alm
nvoHiSPRHAlm
nvoHiSpaceTemp
nvoHiSATAlm
nviPRevClckTemp
BV:1006
discrete
in
float
value
AV:9010
AV:9009
37
APPENDIX B -- THIRD PARTY POINTS LIST (CON’T)
(IN ALPHABETICAL ORDER)
BACnet
Point Name
Input 1 Function
Input 2 Function
Input 3 Function
Input 3 Switch Configuration
Input 5 Function
Input 5 Switch Configuration
Input 8 Function
Input 8 Switch Configuration
Input 9 Function
Input 9 Switch Configuration
input_1
input_10
input_11
input_2
input_3
input_4
input_5
input_7
input_8
input_9
Low Space Relative
Humidity
Low Space Temp
Alarm
Low Supply Air Temperature
Maximum Heating
SAT
Min Setpoint Separation
Minimum Cooling
SAT
OAQ Sensor
Occ Relative Humidity Setpoint
Occupancy Contact
Occupancy Source
Occupancy Status
Operating Mode
Optimal Start
Outdoor Air CO2
Outdoor Air Temp
Sensor Alarm
Outdoor Air Temperature
Outdoor CO2 Sensor
Value @ Max mA
Outdoor CO2 Sensor
Value @ Min mA
Read/
Write
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R
R
R
R
R
R
R
R
R
R
R
R
R/W
R/W
R/W
R
R/W
R
R/W
R
R
R/W
R
R
R
R/W
R/W
BACnet Point
Name
Modbus
OBJECT
ID
di9_type
ai_1
ai_10
ai_11
ai_2
di_3
di_4
di_5
ai_7
di_8
di_9
MSV:8100
1
MSV:8100
2
MSV:8100
3
MSV:8101
3
MSV:8100
5
MSV:8101
5
MSV:8100
8
MSV:8101
8
MSV:8100
9
MSV:8101
9
AI:1001
AI:1010
AI:1011
AI:1002
BI:1003
BI:1004
BI:1005
AI:1007
BI:1008
BI:1009
sprh_lo_alarm
BV:7019
spt_lo_alarm
BV:7012
sat_lo_alarm
BV:7021
sat_ht_max
AV:83004
min_stpt_sep
AV:63
sat_cl_min
AV:83003
oaq_alarm
occ_dehum_stpt
occ_contact_status
occ_source
BV:7006
occ_status
BV:2008
run_status
MSV:2002
optm_start
AV:9026
oaq
AV:1010
oat_alarm
BV:7003
oa_temp
oaq_ref_hi_pp
m
oaq_ref_lo_pp
m
AV:1003
ai1_function
ai2_function
di3_function
di3_type
di5_function
di5_type
di8_function
di8_type
di9_function
AV:3011
Register
Type
discrete
in
discrete
in
discrete
in
discrete
in
float
value
N2
LON Works
Register
#
Network
Point
Type
Network
Point
Address
10038
BI
38
10039
BI
39
10040
BI
40
10041
BI
41
40083
ADF
10018
SNVT Type
SNVT Name
SNVT_switch
(95)
SNVT_switch
(95)
SNVT_switch
(95)
nvoLoSPRHAlm
nvoLoSpaceTemp
nvoOAQSens
or
36
SNVT_switch
(95)
SNVT_lev_percent (81)
BI
18
SNVT_switch
(95)
30001
ADI
13
40147
ADF
40085
40087
nvoLoSATAlm
nviOccRHSP
BV:1007
MSV:1002
discrete
in
unsigned
int
float
value
float
value
float
value
AV:9014
AV:9013
38
nvoOccStatus
nvoOperatingMode
61
SNVT_count_inc
(9)
SNVT_time_hour
(124)
ADF
37
SNVT_ppm (29)
nvoOAQ
ADF
38
SNVT_temp_p
(105)
nvoOAT
nviOptimalStart
APPENDIX B -- THIRD PARTY POINTS LIST (CON’T)
(IN ALPHABETICAL ORDER)
BACnet
Point Name
Override Time Remaining
Password Protected
Output Variable
Power Exhaust Relay
State
Power Exhaust Setpoint
Power Exhaust Test
Pushbutton Override
Reset Comp 1
Runtime Alarm
Reset Comp 2
Runtime Alarm
Reset Filter Runtime
Alarm
Reset Supply Fan
Runtime Alarm
Safety Chain
Safety Chain Feedback
Schedule
Service Test
Setpoint / Cooling
Occupied Setpoint
Setpoint / Cooling
Setpoint Adjust
Setpoint / Cooling
Unoccupied Setpoint
Setpoint / Effective
Cooling Setpoint
Setpoint / Effective
Heating Setpoint
Setpoint / Heating
Occupied Setpoint
Setpoint / Heating
Setpoint Adjust
Setpoint / Heating
Unoccupied Setpoint
Setpoint Adjust
Setpoint Adjustment
Setpoint Adjustment
Range
Setpoint Slider
Shutdown
Space Relative Humidity
Space Relative Humidity Sensor
Space sensor type
Space Temp / Override Time Remaining
Space Temp / Zone
Temp
Space Temp Sensor
Space Temp Sensor
Space Temperature
Space Temperature
--- Prime Variable
Space Temperature
Offset Pot
Read/
Write
R
R/W
R
R/W
R/W
R
R/W
R/W
R/W
R/W
R
R
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R/W
R
R/W
R
R
R/W
R/W
R
R
R
R
R
R
BACnet Point
Name
Modbus
OBJECT
ID
ovrde_time
AV:2016
ppo
AV:90000
pexh
BV:2010
pexh_stpt
pexh_test
pb_status
comp1_rntm_
clr
comp2_rntm_
clr
AV:3010
BV:81008
BV:31
filter_rntm_clr
BV:7517
sfan_rntm_clr
safety_alarm
BV:7510
BV:7024
safety_status
schedule
test_enable
BV:1009
BV:8000
BV:81000
occ_cl_stpt
AV:3001
cl_stpt_adj
AV:2
unocc_cl_stpt
AV:3003
eff_cl_stpt
AV:4
eff_ht_stpt
AV:5
occ_ht_stpt
AV:3002
ht_stpt_adj
AV:3
unocc_ht_stpt
stpt_adj_enable
AV:3004
stpt_adj
stpt_adj_rang
e
slidepot_alarm
shutdown
AV:1006
space_rh
AV:1011
sprh_alarm
spt_type
override_time_remaining
BV:7022
MSV:9001
zone_temp
AI:1
spt_fail
spt_status
spt_alrm_statu
s
BV:7001
MSV:2003
space_temp
AV:2007
stpt_adj_offset
AV:91006
N2
Register
Type
Register
#
float
value
Network
Point
Type
40093
ADF
float
value
40097
discrete
out
LON Works
Network
Point
Address
SNVT Type
SNVT Name
41
SNVT_time_min
(123)
nvoOvrTimeR
emain
ADF
43
SNVT_lev_percent (81)
nviPwrExhSp
22
BO
22
SNVT_switch
(95)
nvoSafetyChain
float
value
40009
ADF
4
SNVT_temp_p
(105)
nviOccCoolSP
float
value
40015
ADF
7
SNVT_temp_p
(105)
nviUnoccCoolSP
float
value
40019
ADF
9
SNVT_temp_p
(105)
nviOccHeatSP
40017
ADF
8
26
BO
26
40099
ADF
44
40101
ADF
45
40103
ADF
46
10045
BI
discrete
in
10046
float
value
40107
BV:7514
BV:7515
BV:1013
AV:9015
BV:7002
BV:9001
float
value
discrete
out
float
value
float
value
float
value
discrete
in
SNVT_temp_p
(105)
SNVT_switch
(95)
SNVT_temp_p
(105)
SNVT_temp_p
(105)
nviUnoccHeatSP
nviSPAdjEnable
nvoSPAdjust
nviSPAdjRange
45
SNVT_lev_percent (81)
SNVT_switch
(95)
nvoSpaceRH
nvoSpaceRHSensor
BI
46
SNVT_switch
(95)
nvoSPTempSensor
ADF
48
SNVT_temp_p
(105)
nvoSpaceTem
p
AV:1
BV:37
39
APPENDIX B -- THIRD PARTY POINTS LIST (CON’T)
(IN ALPHABETICAL ORDER)
BACnet
Point Name
Supply Air Temp
Sensor
Supply Air Temperature
Supply Fan Failure
Supply Fan in Hand
Supply Fan Relay
State
Supply Fan Runtime
Supply Fan Runtime
Supply Fan Service
Alarm Timer
Supply Fan Status
Switch Configuration
System Cooling Demand Level
System Heating Demand Level
System is shut down
System Mode
System OAT Master
System Outdoor Air
Temperature
System Space Temperature
T5x Override Duration
Unit Start Delay
Unit Type
Unocc Free Cool Enable
Unocc Relative Humidity Setpoint
Vent Dmpr Pos /
DCV Min Pos
Read/
Write
R
R
R
R
R
R
R
R/W
R
R
R
R
R
R
R
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
BACnet Point
Name
Modbus
OBJECT
ID
sat_alarm
BV:7004
sa_temp
sfan_fail_alar
m
sfan_hand_ala
rm
AV:1008
sfan
sfan_rntm
sfan_rntm_ala
rm
sfan_service_hrs
BV:2001
AV:2014
sfan_status
di_cfg_alarm
cool_demand_level
heat_demand_level
shutdown_status
mode_status
mstr_oa_temp
BV:1003
BV:7025
system_oat
AV:1901
system_spt
AV:1902
ovr_dur
AV:9023
start_delay
unit_type
AV:9007
MSV:9018
ntfc_ena
unocc_dehum_stpt
BV:80001
econ_min
AV:9005
N2
LON Works
Register
#
Network
Point
Type
10047
BI
47
40109
ADF
49
SNVT_switch
(95)
SNVT_temp_p
(105)
discrete
in
10023
BI
23
SNVT_switch
(95)
nvoSFRelay
discrete
in
10024
BI
24
SNVT_switch
(95)
nvoFanStatus
40119
ADF
54
40123
ADF
56
SNVT_temp_p
(105)
SNVT_temp_p
(105)
nviSysOAT
nviSysSpaceT
emp
40127
ADF
58
SNVT_time_sec
(107)
nviUnitStartDly
40129
ADF
59
40131
ADF
60
SNVT_lev_percent (81)
SNVT_lev_percent (81)
nviUnoccRHSP
nviDCVMinPos
Register
Type
discrete
in
float
value
Network
Point
Address
SNVT Type
SNVT Name
nvoSATSensor
nvoSAT
BV:7008
BV:7009
BV:7010
AV:83005
AV:9006
AV:9036
BV:2011
MSV:2001
AV:80001
AV:3012
float
value
float
value
float
value
float
value
float
value
40
RTU--OPEN START--UP SHEET
RTU Model Number:
RTU Serial Number:
RTU--- OPEN Software Version:
Date:
Performed by:
Company:
Protocol and Boad Rate:
Network Address:
CONFIGURATION POINTS
BACview
MENU
HOME
CONFIG
SETPOINT
POINT NAME
Occupied Heating Setpoint
Occupied Cooling Setpoint
Unoccupied Heating Setpoint
Unoccupied Cooling Setpoint
Effective Cool Setpoint
Effective Heat Setpoint
Optimal Start
Occ Relative Humidity Setpoint
Unocc Relative Humidity Setpoint
DCV Max Ctrl Setpoint
Power Exhaust Setpoint
ALARMS
Occupied Alarm Hysteresis
Alarm Delay (min/deg)
Unoccupied Low SPT Alarm Limit
Unoccupied High SPT Alarm Limit
Low SAT Alarm Limit
High SAT Alarm Limit
BACnet
RANGE
OBJECT
Select function below
CONFIGURATION
SETPOINTS
occ_ht_stpt
40--- 90 ° F
occ_cl_stpt
55--- 99 ° F
unocc_ht_stpt
40--- 90 ° F
unocc_cl_stpt
55--- 99 ° F
eff_cl_stpt
xx ° F
eff_ht_stpt
xx ° F
optm_start
0--- 4 hr
occ_dehum_stpt
0--- unocc setpoint
%rh
unocc_de30--- 100 %rh
hum_stpt
iaq_stpt_max
0--- 9999 ppm
pexh_stpt
20--- 90 %Open
ALARM CONFIGURATION
SPACE TEMPERATURE ALARM
occ_spt_alrm_hyst
2--- 20° F
spt_alrm_delay
0--- 30 minutes
uno_spt_alrm_lo_l
35--- 90 ° F
mt
uno_spt_alrm_hi_l
45--- 100 ° F
mt
SUPPLY AIR TEMPERATURE ALARM
sat_lo_alrm_lim
15--- 90 ° F
sat_hi_alrm_lim
90--- 175 ° F
Low Space Humidity Alarm Limit
High Space Humidity Alarm Limit
SPACE HUMIDITY ALARM
sprh_lo_alrm_lim
0--- 99 %rh
sprh_hi_alrm_lim
0--- 99 %rh
Occ High CO2 Alarm Limit (ppm)
IAQ / VENTILATION ALARM
iaq_occ_hi_lmt
0--- 9999 ppm
41
DEFAULT
70
74
55
90
4
60
95
650
50
3
10
45
95
35
160
30
70
1200
ENTRY
CONFIGURATION POINTS (CON’T)
BACview
MENU
HOME
CONFIG
UNIT
POINT NAME
Fan Mode
Unit Start Delay
Fan Off Delay
Minimum Cooling SAT
Maximum Heating SAT
Vent Dmpr Pos / DCV Min Pos
DCV Max Vent Damper Pos
S Fan Service Alarm Timer
Comp 1 Service Alarm Timer
Comp 2 Service Alarm Timer
Filter Service Alarm Timer
Pushbutton Override
Setpoint Adjustment
Setpoint Adjustment Range
Cooling Lockout Temperature
Economizer High OAT Lockout Temp
HP Rev Cycle Lockout Temp
Heating Lockout Temperature
Unocc Free Cool Enable
Setpoint Separation
Occupancy Source
CALIBRATE
Space Temp Calibration
Supply Air Temp Calibration
Outdoor Air Temp Calibration
BACnet
RANGE
OBJECT
Select function below
CONFIGURATION
UNIT CONFIGURATION
fan_mode
1=Auto
2=Continuous
3=Always On
start_delay
0--- 30 sec
fan_delay_off
0--- 180 sec
sat_cl_min
45--- 75 ° F
sat_ht_max
95--- 150° F
econ_min
0--- 100 %Open
iaq_dpr_max
10--- 60 %Open
sfan_service_hrs
0--- 9999 hr
comp1_ser0--- 9999 hr
vice_hrs
comp2_ser0--- 9999 hr
vice_hrs
filter_service_hrs
0--- 9999 hr
pb_enable
Disable/Enable
stpt_adj_enable
Disable/Enable
stpt_adj_range
+/--- 0--- 5 ° F
oat_cl_lockout
0--- 80° F
oat_ec_lockout
55--- 80° F
hp_rev_cycle_lock--- 20--- 30° F
out
oat_ht_lockout
35--- 150° F
ntfc_ena
Disable/Enable
min_stpt_sep
2--- 10 ° F
occ_source
1=Always occupied
2=BACnet Schedule
3=BAS On/Off
4=Remote Occ Input
SENSOR CALIBRATION
spt_offset
--- 9.9--- 10° F
sat_offset
--- 9.9--- 10° F
oat_offset
--- 9.9--- 10° F
42
DEFAULT
Continuous
5
90
50
120
20
50
0
0
0
600
Enable
Enable
5
45
75
--- 3
65
Disable
5
Always Occupied
0
0
0
ENTRY
CONFIGURATION POINTS (CON’T)
BACview
MENU
HOME
CONFIG
INPUT
POINT NAME
Input 1 Function
Input 2 Function
Input 3 Function
Input 3 Switch Configuration
Input 5 Function
Input 5 Switch Configuration
Input 8 Function
Input 8 Switch Configuration
Input 9 Function
Input 9 Switch Configuration
Space sensor type
T5x Override Duration
BACnet
RANGE
OBJECT
Select function below
CONFIGURATION
INPUT CONFIGURATION
ai1_function
1=No Sensor
2=IAO Sensor
3=OAQ Sensor
4=Space RH
Sensor
ai2_function
1=No Sensor
2=IAO Sensor
3=OAQ Sensor
4=Space RH
Sensor
di3_function
1=No Function
2=Compressor
Safety
3=Fan Status
4=Filter Status
5=Remote Occupancy
6=Door Contact
di3_type
N/O
N/C
di5_function
1=No Function
2=Fire Shutdown
3=Fan Status
4=Filter Status
5=Remote Occupancy
6=Door Contact
di5_type
N/O
N/C
di8_function
1=No Function
2=Enthalpy Switch
3=Fan Status
4=Filter Status
5=Remote Occupancy
6=Door Contact
di8_type
N/O
N/C
di9_function
1=No Function
2=Humidistat
3=Fan Status
4=Filter Status
5=Remote Occupancy
6=Door Contact
di9_type
N/O
N/C
spt_type
1=T55
2=T56 (use for T59)
3=SPT Sensor
ovr_dur
0--- 24 hours
43
DEFAULT
No Sensor
1 (No FIOP)
2 (FIOP)
Compressor Safety
N/O
Fire Shutdown
N/O
1 (No FIOP)
2 (FIOP)
N/O
Humidistat
N/O
T55
1
ENTRY
CONFIGURATION POINTS (CON’T)
BACview
MENU
HOME
CONFIG
SERVICE
POINT NAME
Unit Type
BACnet
RANGE
OBJECT
Select function below
CONFIGURATION
SERVICE CONFIGURATION
unit_type
1=Heat/Cool
2=HP O/B Ctrl
3=HP Y1/W1 Ctrl
DEFAULT
ENTRY
Heat/Cool (TC and HC
models)
HP Y1/W1 Ctrl (TCQ
and HCQ models)
One Stage (sizes
04--- 07, and A08--- A12)
Two Stages (sizes
08--- 30)
No (No FIOP)
Yes (FIOP)
O output type
Compressor Stages
comp_stages
One stage/ Two
Stage
Economizer Exists
econ_exist
No/Yes
Reversing Valve Type
rev_vlv_type
Heat Type
heat_type
O output type/B
output type
Electric/Gas
Number of Heat Stages
heat_stages
1 / 2 / 0 (no heat)
Continuous Occupied Exhaust
Indoor CO2 Sensor Value @ Min mA
Indoor CO2 Sensor Value @ Max mA
Outdoor CO2 Sensor Value @ Min
mA
Outdoor CO2 Sensor Value @ Max
mA
occ_exh
iaq_ref_lo_ppm
iaq_ref_hi_ppm
oaq_ref_lo_ppm
No/Yes
0--- 9999ppm
0--- 9999ppm
0--- 9999ppm
Gas (48 Series Units)
Electric (50 Series
Units)
0 (50 series cooling
only units)
1 (All TCQs and HCQs,
Low Nox units, single
phase gas units,
TC04--- 09 low and
TC05--- 07 med heat 3
phase gas units)
2 (TC04 and 08--- 09
med, TC05--- 09 high
heat 3 phase gas units,
HC04--- 09 3 phase gas
units and All 12--- 30
gas units)
No
0
2000
0
oaq_ref_hi_ppm
0--- 9999ppm
2000
Copyright 2010 Carrier Corp. D 7310 W. Morris St. D Indianapolis, IN 46231
Printed in U.S.A.
Edition Date: 08/10
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
44
Catalog No:48---50HCTQ---01T
Replaces: NEW
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