ALERTON MS/TP Microset II Operating instructions

Installation and Operations Guide
© Honeywell LTBT-MSTPMS2IOG Rev. 02
MS/TP Microset II

Important safety information and installation
precautions
Read all instructions
Failure to follow all instructions may result in equipment damage or a hazardous condition. Read all instructions
carefully before installing equipment.
Local codes and practices
Always install equipment in accordance with the National Electric Code and in a manner acceptable to the local
authority having jurisdiction.
Electrostatic sensitivity
This product and its components may be susceptible to electrostatic discharge (ESD). Use appropriate ESD
grounding techniques while handling the product. When possible, always handle the product by its non-electrical
components.
High voltage safety test
Experienced electricians, at first contact, always assume that hazardous voltages may exist in any wiring
system. A safety check using a known, reliable voltage measurement or detection device should be made
immediately before starting work and when work resumes.
Lightning and high-voltage danger
Most electrical injuries involving low-voltage wiring result from sudden, unexpected high voltages on normally
low-voltage wiring. Low-voltage wiring can carry hazardous high voltages under unsafe conditions. Never install
or connect wiring or equipment during electrical storms. Improperly protected wiring can carry a fatal lightning
surge for many miles. All outdoor wiring must be equipped with properly grounded and listed signal circuit
protectors, which must be installed in compliance with local, applicable codes. Never install wiring or equipment
while standing in water.
Wiring and equipment separations
All wiring and controllers must be installed to minimize the possibility of accidental contact with other potentially
hazardous and disruptive power and lighting wiring. Never place 24VAC or communications wiring near other
bare power wires, lightning rods, antennas, transformers, or steam or hot water pipes. Never place wire in any
conduit, box, channel, duct or other enclosure containing power or lighting circuits of any type. Always provide
adequate separation of communications wiring and other electrical wiring according to code. Keep wiring and
controllers at least six feet from large inductive loads (power distribution panels, lighting ballasts, motors, etc.).
Failure to follow these guidelines can introduce electrical interference and cause the system to operate
erratically.
Warning
This equipment has been tested and found to comply with the limits for a class B digital device, pursuant to part
15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference
when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate
radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause
harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause
harmful interference, in which case the user will be required to correct the interference at his own expense.
© 2012 Honeywell. All Rights Reserved.
6670 185th AVE NE
Redmond, WA 98052 USA
Phone: [phone] FAX: [phone]
Web Site: www.alerton.com
All information in this document is provided as is without warranty of any kind. Honeywell reserves the right to
change any information herein without prior notice. No guarantees are given as to the accuracy of information.
Trademarks and trade names may be used in this document to refer to either the entities claiming the marks and
names or their products. Alerton, BACtalk, and their logos are registered trademarks and VisualLogic is a
trademark of Honeywell. Honeywell disclaims any proprietary interest in trademarks and trade names other than
its own.
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2LTBT-MSTPMS2IOG Rev. 02 ©Honeywell

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Contents
© Honeywell LTBT-MSTPMS2IOG Rev. 02 3
Contents Quick reference 4
Quick reference (continued) 5
Introduction 6
Specifications 7
Mounting 8
Wiring 12
Wire specifications 12
Power supply guidelines and requirements 12
MS/TP Microset II power ratings 12
Power supply grounding and wiring 13
MS/TP LAN wiring 14
Terminating MS/TP LAN cabling 15
Grounding the MS/TP LAN shield 15
Terminating resistors 16
Operational overview 17
Hotel vs. office modes 17
Fan-control vs. no-fan-control modes 17
Cooling and heating setpoint calculation 17
After-hours override operation 18
Housekeeping override operation 18
English and metric units 18
Outside air temperature (OAT) display 19
LCD backlight operation 19
Testing the LCD backlight/ LCD/ and MS/TP status 19
Viewing communications status 20
Operating mode specifics 21
Enabling operating modes 22
Office modes 22
Hotel modes 30
Field service mode 35
Setting the MS/TP MAC address and BACnet device instance 38
BACnet object and property reference 39
MS/TP Microset II objects 40
Object properties 40
BV and AV assignments 43

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Quick reference
© Honeywell LTBT-MSTPMS2IOG Rev. 02 4
Quick reference
ID Display/control function Description Software remarks
1Setpoint (°F or °C as appropriate)
Override time remaining
ON/OFF status
Time of day (optional alternate)
Value associated with data code (field service
mode)
Displays unit setpoint, after-hours/housekeeping
timer, ON/OFF status, or value of field service
code, depending on mode of operation.
Optionally, in modes M1-M6, the time of day can
display alternately on a three-second cycle with
any of the above.
Setpoint = AV-90.
Housekeeping timer or after-hours timer =
AV-98.
ON/OFF mode = BV-65.
Time of day is read directly from the MS/TP
Microset II when BV-82 is ON. The MS/TP
Microset II must be time-synced. BV-83 controls
format (12- or 24-hour).
2Outside air temperature (OAT)
Outside humidity (optional alternate) Displays OAT. Optionally, an outside humidity
reading in %RH can display alternately on a
three-second cycle with the OAT.
OAT = AV-103, which is written to in MS/TP
Microset II.
%RH = AV-107. If AV-107 is non-zero display will
cycle.
3Fan status Displays occupant-selected fan status and speed
in modes M4, M5, M8, and M9. In these modes,
the occupant can use the right UP/DOWN buttons
to increase and decrease the fan speed. In other
modes, occupant adjustment is disallowed, but
DDC can control the fan status and speed
display.
Only one of the following BVs may be ON;
otherwise, the Microset II indicates a high fan
speed:
BLANK = BVs 72-74 OFF.
Low = BV-72 ON.
Med = BV-73 ON.
High = BV-74 ON.
4Space temperature
Space humidity (optional alternate for
MS-2000H)
Field service code (field service mode)
Displays space (room) temperature. With the
Microset II with humidity sensor
(MS-2100H-MSTP), the room %RH can display
alternately on a three-second cycle with the room
temperature.
Space temperature = AV-101. AI-0 is room
temperature as read by the Microset II
thermistor. Turn ON BV-75 to link AV-101 to
AI-0. Turn OFF BV-75 if using DDC to write
space temperature to ACV-101.
Display will cycle between space temperature
and humidity if BV-84 is ON.
Space humidity = AV-102. No DDC required.
AV-102 cannot store other values.
5Right UP/DOWN buttons
Fan speed control (M4, M5, M8)
After-hours increment/decrement (M2, M5)
ON/OFF control (M3, M6)
Housekeeping timer ON/OFF (M7, M9)
Adjust value (field service mode)
Button press causes only affected value on LCD
to appear; all others disappear. Display remains
in this state for three seconds after button
release.
Button press affects BV-67 according to mode
(see Table 5 on page 22). In fan modes, button
press also affects BVs 72–74 (Table 8 on page
43).
6Left UP/DOWN buttons
Adjust setpoint
Display unoccupied heating/cooling
setpoints (M2, M5)
Scroll through codes (field service mode)
Button press causes only affected value on
LCD to appear; all others disappear.
Display remains in this state for three
seconds after button release.

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Quick reference
© Honeywell LTBT-MSTPMS2IOG Rev. 02 5
Mode IDs
M1—Office, no fan, occupied
M2—Office, no fan, unoccupied
M3—Office, no fan, ON/OFF
M4—Office, fan, occupied
M5—Office, fan, unoccupied
M6—Hotel, no fan, rented
M7—Hotel, no fan, vacant
M8—Hotel, fan, rented
M9—Hotel, fan, vacant
See Table 5 on page 22 for more
information.
Field Service Codes
Code Data point Meaning
UC. AV-95 Unoccupied cooling setpoint
UH. AV-96 Unoccupied heating setpoint
CO. AV-93 Cooling offset
HO. AV-94 Heating offset
CS. AV-99 Occupied cooling setpoint
HS. AV-100 Occupied heating setpoint
AL. AV-97 Override limit
rO AV-108 Room temperature offset
hO AV-109 Space humidity offset
HI. AV-91 Setpoint high limit
LO. AV-92 Setpoint low limit
SP. AV-90 Occupant-selected space temperature setpoint
Quick reference (continued)

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MS/TP Microset II
6LTBT-MSTPMS2IOG Rev. 02 ©Honeywell
Introduction The MS/TP Microset™II is a wall-mounted BACnet MS/TP smart sensor that
resides on an MS/TP network. It is designed for applications with multiple
zones, such as a restaurant or a shopping mall; or split zone control sites, like an
office setting where occupants share a single zone split into multiple working
areas.
Features:
• Supports MS/TP communications
• Outside and room humidity display
• Outside temperature displayed at all times
• Space (room) temperature displayed at all times
• Space (room) humidity displayed at all times
• Fan speed display/adjustment (up to three speeds and OFF)
• Setpoint display/adjustment
• After-hours/housekeeping overrides
• Optional time of day display
• Heating or cooling mode display
• English or metric units

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Specifications
© Honeywell LTBT-MSTPMS2IOG Rev. 02 7
Specifications
Table 1 MS/TP Microset II specifications.
Part Number MS-2100H-MSTP
Power 24 VAC @ 5 VA
MS/TP MS/TP LAN operates up to 115 Kbps
Dimensions 4.6" (117 mm) H X 3.0" (76 mm) L X 0.7" (18
mm) D.
Humidity Sensor
Accuracy
Operating Temp.
Repeatability
±5% RH, 10–90% RH @ 25°C.
-40–185°F (-40–85°C).
±0.5% RH.
Ratings EMC Directive 89/336/EEC (European CE Mark).
FCC Part 15, Subpart J, Class B.

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MS/TP Microset II
8LTBT-MSTPMS2IOG Rev. 02 ©Honeywell
Mounting The MS/TP Microset II is designed to be wall-mounted indoors, with dimensions
ideal for mounting to a single-gang electrical box. See Fig. 3 on p. 10.
Mount in a clean, dry location away from windows, air ducts, and other places
where environmental factors may affect temperature and humidity readings.
Note If you mount the MS/TP Microset II on the interior of an outside wall,
thoroughly insulate so air behind the sensor doesn’t affect the sensor reading.
To meet requirements of the Americans with Disabilities Act, mount no higher
than 48" from the floor and with a minimum clear floor space of 30" X 48" (760
X 1220 mm). See Figure 1.
Figure 1 Mounting guidelines for compliance with Americans with Disabilities
Act (ADA).

Installation and Operations Guide
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Mounting
© Honeywell LTBT-MSTPMS2IOG Rev. 02 9
Figure 2 Backplate mounting dimensions.
The MS/TP Microset II ships with the backplate on backwards. This makes the
backplate easier to remove during installation. Two screws attach the backplate
to an electrical box, mud ring, or other mounting surface.
To secure the MS/TP Microset II to a mounting surface
1. Remove the backplate from the MS/TP Microset II and the wiring
pigtail.
2. Flip the backplate so the smooth side faces the mounting surface.
3. Rethread the wires through the center knockout on the backplate.

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MS/TP Microset II
10 LTBT-MSTPMS2IOG Rev. 02 ©Honeywell
4. Use communications grade connectors to splice the MS/TP Microset II
wires to the wire run of the MS/TP network. Alerton recommends using
communications grade connectors for splicing into the MS/TP network.
See “Wiring” on page 12 for details.
5. Secure the backplate to the mounting surface with the enclosed screws
or your own.
6. Hold the MS/TP Microset II at an angle above the backplate and then
slide it down.
7. The two tabs on the inside top edge of the MS/TP Microset II should fit
into the tab slots on the backplate
(see Figure 3).
8. Push the bottom of the MS/TP Microset II onto the backplate legs until
they snap securely on the tab-stops (see Figure 3).
CAUTION Do not crimp or kink the pigtail wires. See “MS/TP LAN wiring” on
page 14 for more wiring diagrams.
Figure 3 MS/TP Microset II mounting.
1.
Splice MS/TP Microset II
pigtails (Blue and Yellow) into
MS/TP LAN. Ensure that
connections are secure; use
comm grade splice connectors
instead of wire nuts.
2. Secure backplate to
mounting surface with
screws (provided).
3. Insert MS/TP Microset II tabs
into backplate slots.
5. Push bottom of MS/TP Microset
II until the backplate
legs click into position.
Backplate legs (face
away from wall)
MS/TP Microset II backplate
MS/TP Microset II pigtail
MS/TP Microset II
4. 24 VAC power =
White and Orange.