Daikin McQuay 910121754 Instruction Manual

Installation & Maintenance Data
Group: WSHP/FCU
Part Number: 910140464
Date: January 2013
IM 1171-3
©2013 McQuay International • 800.432.1342 • www.mcquay.com
DigitallyAdjustable Display Sensor
Used With:
Water Source Heat Pumps (WSHP) - Sensor Part No. 910121754
SmartSource™Units - Models GS & GT
Enfinity™ Units with MicroTech®III Controls - Models CCH, CCW; VFC, VFW; LVC, LVW;
MHC, MHW & VHC, VHF
Fan Coil Units (FCU) - Sensor Part No. 910113679
Models With MicroTech III Controls

Page 2 of 16 / IM 1171-3
Contents
Overview...............................................................................3
Applications.........................................................................4
Sensor Functions................................................................5
910113679, Fan Coil Unit Model: .....................................5
910121754, Water Source Heat Pump Model: .................5
Sensor Dimensions.............................................................5
Terminations ........................................................................6
Mounting ..............................................................................7
Location ............................................................................7
Junction Box, (J-Box)........................................................7
Drywall Mounting ..............................................................7
Maintenance.........................................................................7
Terminal Descriptions.........................................................7
Initial Start-Up Occupied Sequence: .................................8
Power Fail Start-Up Occupied Sequence:.........................8
Display Descriptions...........................................................8
Numerical Display .............................................................8
Adjusting The Setpoint (Temperature or Humidity) ...........8
Occupied Icon Indicator: ...................................................8
The Word "Override" On The Display: ..............................8
Fan Status & Speed Indicators: ........................................9
System Mode “Heat/Cool/Auto/Off/Dhum”Indicators: ......9
Alarm Word On The Display: ............................................9
E-Save Word On The Display: ..........................................9
Setpoint Word On The Display: ........................................9
Status Word & Dot On The Display: .................................9
Front Panel Button Operation..........................................10
System Mode Indication (FCU Only)................................10
“Heat/Cool/Auto/Off” .......................................................10
Fan Speed Indication (FCU Only).....................................10
“Auto/High/Medium/Low” ................................................10
System Mode Indication (WSHP Only)............................10
“Heat/Cool/Auto/Off/Dhum”.............................................10
Fan Indication (WSHP Only).............................................10
“Auto/On” ........................................................................10
Override/Reset Button (Timed ...........................................
Override & Alarm Reset): ................................................10
Occupied Button (Occupied/ .............................................
Unoccupied Request): ...................................................10
Up & Down Setpoint Buttons .............................................
(Temp Or Humidity): ....................................................... 11
System Mode Button (FCU Has Heat/Cool/Auto/Off) Or
(WSHP Has Heat/Cool/Auto/Off/Dhum): ........................11
Fan Mode Button (FCU Has Auto/.....................................
High/Medium/Low/Off) (WSHP Has ..................................
Auto/On):........................................................................11
Optional Technician Adjustments....................................11
Set-Up Jumper (J50) Conguration: (Factory Set Per
Order) .............................................................................11
Label Description Setting ................................................11
Program Mode Menu Pages: (Display Required) ........... 11
Entering Program Mode And Making Changes: ............. 11
Program Mode Menu Pages: ..........................................11
Diagnostics........................................................................14
Problem & Possible Solution ..........................................14
Specications ....................................................................15
Supply Voltage: ...............................................................15
Sensor: ...........................................................................15
Outputs: ..........................................................................15
Sensor Controls: .............................................................15
Field Setup Jumper J50: .................................................15
Display: ...........................................................................15
Field Conguration Menu: ..............................................15
Enclosure Material: .........................................................15
Ambient:..........................................................................15
Agency: ...........................................................................15

IM 1171-3 / Page 3 of 16
Overview
The display sensor is used in conjunction with the MicroTech
III equipped units as described in the Application Section
below. The same sensor is used for Water Source Heat Pump
(WSHP) and for Fan Coil Units (FCU) with just a hardware
jumper and menu change during conguration. The sensor
has a digital display for Temperature, Humidity, Occupancy,
Fan Speed, System Mode, Alarm, Setpoint and Status indica-
tion. Controls include six buttons for Setpoint, System Mode,
Fan Speed, Occupied/Unoccupied Request, and Override
Reset. (Figure 1).
Figure 1: Digital display sensor - P/N 910121754, Fan Coil
P/N 910113679
Setpoint-Down
System Mode
Fan Speed
Occupied/Unoccupied Request
Override Reset
Setpoint-Up

Page 4 of 16 / IM 1171-3
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
Horizonal
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
Fan Coils Horizontal ThinLine™FC.H, FH.H MicroTech III Unit Controller Yes
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 Yes1Yes1No 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 Yes1Yes1No No
Hori-
zontal &
Vertical
Smart-
Source
1-Stage
W GSH,
GSV 34Yes Yes Yes Yes Yes Yes Yes Yes Yes
Hori-
zontal &
Vertical
Smart-
Source
2-Stage
W. GTH,
GTV 34Yes 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

IM 1171-3 / Page 5 of 16
Sensor Functions
910113679, Fan Coil Unit Model:
• Display sensor to show room temperature, fan speed
(Auto/High/Medium/Low), system mode (Heat/Cool/
Auto/Off), alarm, override and occupancy.
910121754, Water Source Heat Pump Model:
• Display sensor to show room temperature, room humidity,
fan speed (Auto/On), system mode (Heat/Cool/Auto/Off/
Dhum), alarm, override and occupancy.
• De-humidication output contact has an adjustable
setpoint and congurable deadband. This output operates
automatically using the RH setpoint and deadband in the
system “Auto” mode or in the “Dhum” mode.
Sensor Dimensions
Figure 2: Sensor dimensions
2.784
4.500
1.125
Termination
Daikin McQuay recommends using a twisted shielded pair of
at least 22AWG for the power wire connections. The shield
should be earth grounded only at the power source. Larger
gauge wire may be required for long runs.
CAUTION
Combination of power wiring (R, 5, DH) and analog (1, 2, 3, 4,
and 6 to ground) wiring in a common cable may cause signal
interference and must be avoided.
All wiring must comply with the National Electric Code
(NEC) and local codes. Do NOT run any of this device’s wir-
ing in the same conduit as other AC power wiring. Tests show
that uctuating 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
Figure 3: Daikin McQuay sensor circuit board