Daikin McQuay IOM 1177 Owner's manual

Installation Operation & Maintenance Data
Group: WSHP
Part Number: 910133392
Date: July 2012
IOM 1177
©2012 McQuay International • 800.432.1342 • www.mcquay.com
Room Temperature Sensor –Adjustable Cool/Warm With
Occupancy Switch (Sensor Part No. 910121753)
Used With:
Water Source Heat Pumps
▪ SmartSource Units with MicroTech® III Controls – Models GS & GT
▪Enfinity™ Units with MicroTech III Controls – Models CCH, CCW; VFC, VFW;
LVC, LVW; MHC, MHW & VHC, VHF
IMPORTANT!
Operator, save these instructions for future use!

Page 2 of 8 / IOM 1177
Safety
WARNING
Wiring connections must be made in accordance with all
applicable electrical codes. Failure to read and follow all instruc-
tions carefully before installing or operating this control could
cause personal injury and/or property damage.
CAUTION
To prevent electrical shock, disconnect electric power to system
at main fuse or circuit breaker box until installation is complete.
NOTICE
If in doubt about whether your wiring is millivolt, line, or low volt-
age, have it inspected by a qualied heating and air condition-
ing contractor or electrician.
Do not exceed the specication ratings.
All wiring must conform to local and national electrical codes
and ordinances.
This control is a precision instrument, and should be handled
carefully. Rough handling or distorting components could cause
the control to malfunction.
The remote sensors cannot be used with systems where power
interruptions are part of normal system operation.
NOTICE
MERCURY NOTICE
This product does not contain mercury. However, this product
may replace a product that contains mercury. Mercury and
products containing mercury must not be discarded in house-
hold trash. Do not touch any spilled mercury. Wearing non-
absorbent gloves, clean up any spilled mercury and place in a
sealed container. For proper disposal of a product containing
mercury or a sealed container of spilled mercury, place it in a
suitable shipping container. Refer to www.thermostat-recycle.
org for location to send the product containing mercury.
Contents
Safety....................................................................................2
Applications.........................................................................3
Termination ..........................................................................3
Installation............................................................................4
Mounting ...........................................................................4
Drywall Mounting ..............................................................4
Field Wiring .......................................................................5
Maintenance .....................................................................5
Terminal Descriptions .......................................................5
Sensor Functions................................................................6

IOM 1177 / Page 3 of 8
Applications
The display sensor can be used on the products shown in Table 1.
Table 1: Product usage guide
Units Product Models Controls Used with Digitally Adjustable Sensor
with Temperature and Humidity Display
Water Source
Heat Pumps
Horizontal
Ennity™
W. CCH, CCW
MicroTech III
Unit Controller Yes
Vertical W. VFC, VFW
Vertical Stacked W. VHC
Console W. MHC, MHW
Horizontal &
Vertical
SmartSource 1-Stage W. GSH, GSV MicroTech III SmartSource
Unit Controller
SmartSource 2-Stage W. GTH, GTV
Vertical SmartSource Inverter W. DFW Daikin McQuay Inverter
Controller No
The display sensor for water source heat pump applications is shown in Table 2
Table 2: Water source heat pump application guide
Units Product Models
Applications
Cool-
ing Heat- ing Dehumidication Electric Heat
Water-
side
Econo-
mizer
Stages
Smart
Dehu-
midi-
cation
Hot Gas
Reheat Simpli- ed
Hu-
midistat
Con-
trolled
Dehu-
midi-
cation
Only
Boil-
erless Supple- mental Primary 3-Way
Valve
Control
Water
Source
Heat
Pumps
Hori-
zontal
Ennity
W. CCH,
CCW 1 1 No No No No No No No No No
Vertical W. VFC,
VFW 1 1 No Yes No No No Yes1Yes No No
Vertical
Stacked W. VHC 1 1 No No No No No No No No No
Console W. MHC,
MHW 1 1 No No No No No Yes1Yes No No
Hori-
zontal &
Vertical
Smart-
Source
1-Stage
W. GSH,
GSV 3 4 Yes Yes Yes Yes Yes Yes Yes Yes Yes
Hori-
zontal &
Vertical
Smart-
Source
2-Stage
W. GTH,
GTV 3 4 Yes Yes Yes Yes Yes Yes Yes Yes Yes
Vertical Smart- Source
Inverter W. DFW NA NA No No No No No No No No No
Note: 1With optional Boilerless controls
Termination
Daikin McQuay recommends using twisted pair of at least
22AWG and sealant lled connectors for all wire connec-
tions. Larger gauge wire may be required for long runs.All
wiring must comply with the National Electric Code (NEC)
and local codes. Do NOT run this device’s wiring in the same
conduit as AC power wiring. Fluctuating and inaccurate
signal levels are possible when AC power wiring is present in
the same conduit as the signal lines. If you are experiencing
any of these difculties, please contact your Daikin McQuay
representative.

Page 4 of 8 / IOM 1177
Installation
Mounting
Location
Note: Mountthethermostataboutvefeetabovetheoor.
Do not mount the thermostat on an outside wall, in
directsunlight,behindadoor,orinanareaaffected
byaventorduct.
Junction Box, (J-Box)
DANGER
Hazardous Voltage!
Turn off power at the main service panel by remov-
ing the fuse or switching the appropriate circuit
breaker to the OFF position before removing the
existing thermostat.
IMPORTANT!
Thermostat installation must conform to local and national
building and electrical codes and ordinances.
1. To remove cover, insert and twist a coin or screwdriver in
the slots on the thermostat.
2. Pull the wire through the wall and out of the junction box,
leaving about six inches free. Note that the J-box must
be rotated to the horizontal position to accommodate the
proper mounting position. See Figure 1.
3. Pull the wire through the hole in the base plate.
4. Secure the back plate to the box using #6-32 × 1/2 inch
mounting screws.
5. Screw the plate rmly to the wall so the foam plate
backing is compressed about 50%.
6. Terminate the unit according to the guidelines in the
"Field Wiring" section.
CAUTION
Be sure exposed portion of wires do not touch other wires.
7. Attach cover by placing the top of the cover on the back
base and snapping the bottom into position.
Figure 1: Junction box mounting
Junction box
Field provided
thermostat wiring
#6-32 × 1/2
mountings screws
Drywall Mounting
1. Place the base plate against the wall where you want to
mount the sensor.
2. Mark out the two mounting holes where the unit will be
attached to the wall. Drill a 3/16" hole in the center of
each mounting hole and insert a drywall anchor into the
holes.
3. Mark out the center hole for the eld wiring entrance and
drill one 1/2" hole in the middle of the marked wiring area.
4. Pull the wire through the wall and out the 1/2" hole,
leaving about six inches free.
5. Pull the wire through the hole in the base plate.
6. Secure the base to the drywall anchors using #6 × 1"
mounting screws.
7. Screw the plate rmly to the wall so the foam plate
backing is compressed about 50%.
8. Terminate the wiring according to the guidelines in the
"Field Wiring" section.
9. Attach cover by placing the top of the cover on the back
base and snapping the bottom into position.
Note:  1.Inanywall-mountapplication,thewall 
  temperatureandthetemperatureoftheairwithin
  thewallcavitycancauseerroneousreadings.
  2.Themixingofroomairandairfromwithinthewall
  cavitycanleadtocondensation,erroneous
  readingsandsensorfailure.Topreventthese
conditions, Daikin McQuay recommends
  sealingtheconduitleadingtothejunctionboxwith
  berglass.
Figure 2: Field mounting and wiring termination
Mounting holes
Field wiring entrance
Field wiring terminals

IOM 1177 / Page 5 of 8
Installation
Field Wiring
Wiring between the sensor and the water source heat pump
unit for typical heating and cooling operation is shown in
Figure 3.
Figure 3: Field wiring
SmartSource™
Board
MicroTech®III Board I/O Expansion
Module
Base Board
Terminal Block Label TB2-1 TB1-1 TB1-2 TB1-3 TB1-4 TB1-5 TB3-1 TB3-2 TB1-1
Description
24VAC
Unit Status Output
Fan & Unit Mode
Setpoint Adjust
Room Temp Sensor &
Tenant Override
DC Signal Common
Emergency Shutdown
Input
Unoccupied Input
Dehumidication Input
Terminal Label R 1 2 3 4 5 E U 1
Typical Wiring
Terminal Label 1 2 3 4 5 E U
Description
Unit Status LED Input
Fan & Unit Mode
Setpoint Adjustment
Room Temperature
Sensor & Tenant Override
DC Signal Common
Emergency Shutdown
Unoccupied
Adjustable Cool/Warm Room Temperature Sensor with Occupancy Switch (Part No. 910121753)
Maintenance
Wipe the display as needed with a damp water only cotton
cloth. Do not use any type of cleaner as it may damage the
buttons or scratch the display. Do not paint.
Terminal Descriptions
1 – Unit Status Indicator Input from the MicoTech III
SmartSource Unit Controller. (5VDC)
2 - Output Signal, Fan and Unit Mode (0 to 5VDC)
3 - Output Signal, Setpoint Adjustment
4 - Output Signal, Room Temp Thermistor Sensor. (10K ATP
Z curve, 10K-2)
5 - Ground or Neutral. Common Reference for All Signal
Terminals
E – Emergency Shutdown. (Terminal grounded when in
System “Off” mode, VDC only)
U - Unoccupied Contact. (Terminal grounded when in
Unoccupied, VDC only)

Page 6 of 8 / IOM 1177
Sensor Functions
Figure 4: Sensor switches and functions
Status LED
Occupancy Switch
Override Reset
Button System Switch
Fan Switch
Room Temperature
Adjustment
This sensor is used for water source heat pump
applications requiring the following functionality:
•Cool/Warm Room Temperature Adjustment –
This slide adjustment is used to set the desired room
temperature. To increase the desired room temperature,
move the slide to the right toward “Warm”. To decrease
the desired room temperature, move the slide to the left
toward “Cool”.
• Occupancy Switch – Move the switch to the “Occ” to
allow the unit to operate in the occupied mode. Move
the switch to the “Unoc” to allow the unit to operate in
the unoccupied mode. Move the switch to the “Off” so
heating, cooling and the fan remain off.
• System Switch – Set to “Heat” for heating only operation.
Set to “Auto” for operation of heating or cooling as
needed to satisfy the room setpoint conditions. Set to
“Cool” for cooling only operation. The output voltage
on Terminal 2 will change based on the system mode
selection.
• Fan Switch – Set to “Auto” to allow the fan to on when
heat or cool are on. Set to “On” to allow the fan to operate
continuously in the occupied mode and cycle on a call for
heat or cool in the unoccupied mode.
• Status LED – This green LED will light to indicate the
system status. See Table 8 for unit status LED denitions.
• Override Button – When the “Override” button is
pressed, the thermistor sensor across terminal 4 is shorted.
If held for more than 5 seconds but less than 11 seconds,
it puts the water source heat pump controller into a timed
Occupied Override. If the unit is in alarm, then holding
the “Override” Button for more than 11 seconds will clear
all alarms in the water source heat pump controller but
only if the cause of the alarm has already returned to its
non-alarm condition. Some alarms will not reset from the
room sensor.
In this case, power to the unit must be cycled off for 5 sec-
onds to clear the alarm. Continuously resetting alarms from
the room sensor could damage the controller. Please call a
service technician when repeated alarm resets are required to
keep the unit operational.
Table 8: WSHP unit status LED definition
Status LED Unit Status Unit Operation
ON OFF
0.5 seconds 0.5 seconds
Controller Off
(or Network “Wink”
operation active)
“Alarm”
0.0 seconds Continuous
Unit running in Night
Setback Override
Mode or no power to
the sensor
“Override”
0.5 seconds 5.5 seconds Unoccupied Mode “Unoccupied”
5.5 seconds 0.5 seconds Standby Mode
“Energy Save” or
“Load Shed” com-
mand from Energy
Management System
Continuous 0.0 seconds Occupied Mode “Occupied”

IOM 1177 / Page 7 of 8
This page left blank intentionally

©2012 McQuay International • 800.432.1342 • www.mcquay.com IOM 1177 / Page 8 of 8