Lutron HomeWorks QS User Manual
HomeWorks QS Palladiom
Thermostat Configuration Guide
P/N 032498h
P/N 032498h
P/N 032498h
Table of Contents
Description.............................................................................................................................................................................4
Step 1: Identify the HVAC Equipment and Confirm Device Installation .......................................................5
Identify the HVAC Equipment .............................................................................................................................................5
Confirm Device Installation .................................................................................................................................................5
Programming Menu Overview .......................................................................................................................................7
Step 2: Equipment Configuration Mode .................................................................................................................... 7
Step 3: Select the HVAC Controller .............................................................................................................................8
Step 4: Set the SMC55-HWQS Basic Parameters for System Compatibility ............................................9
(01b): System Type .............................................................................................................................................................11
(02b): Heat Stages .............................................................................................................................................................11
(03b): Run Auxiliary Heat (Aux/W2) With Other Heat Stages .......................................................................................... 12
(04b): Auxiliary Heat (Aux/W2) Upstage Delay .................................................................................................................12
(05b): Cool Stages .............................................................................................................................................................13
(06b): Heat Fan Control .....................................................................................................................................................13
(07b): Changeover / Revers ing Valve (O / B) Type..............................................................................................................13
(08b): Valve / Element Type ................................................................................................................................................ 14
(09b): Fan Type ...................................................................................................................................................................14
(10b): 2-Pipe Mode .............................................................................................................................................................15
(11b): Underfloor Heating Control ..................................................................................................................................... 16
Saving and Exiting Basic Configuration ........................................................................................................................... 17
Step 5: Set the SMC55-HWQS Advanced Parameters to Modify the Functionality of the HVAC System ...18
Parameters Applicable to All types of HVAC Equipment ................................................................................................22
(01A) Function Type ...................................................................................................................................................... 22
(02A) Temperature Sensor Type ....................................................................................................................................22
(06A) Minimum Fan On Time .........................................................................................................................................22
(07A) Extended Cool Fan Time (OCFT) ...........................................................................................................................22
(08A) Extended Heat Fan Time (OHFT) ..........................................................................................................................22
(11A) Cool Fan On Delay (CFOD)....................................................................................................................................22
(12A) Heat Fan On Delay (HFOD) ...................................................................................................................................22
(18A) Standalone Temperature Operation Mode .............................................................................................................22
(19A) Standalone Temperature Fan Mode.......................................................................................................................22
(30A) Cannot Reach Setpoint Timeout ...........................................................................................................................23
(31A) Cannot Reach Setpoint Action ..............................................................................................................................23
Parameters Applicable to Conventional and Heat Pump Systems ................................................................................23
(70A) Minimum Compressor Run Time (MCRT) ..............................................................................................................23
(71A) Minimum Compressor Off Time (MCOT) ................................................................................................................ 23
(74A) Heat Stage 1-On Delta .........................................................................................................................................24
(75A) Heat Stage 1-Off Delta .........................................................................................................................................24
(76A) Heat Stage 2 (Y2/W2/Aux)-On Delta .......................................................................................................................24
(77A) Heat Stage 2-Off Delta ......................................................................................................................................... 24
(78A) Heat Stage 3 (Aux)-On Delta ................................................................................................................................24
(79A) Heat Stage 3 (Aux)-Off Delta ................................................................................................................................24
(80A) Cool Stage 1-On Delta ......................................................................................................................................... 24
(81A) Cool Stage 1-Off Delta .........................................................................................................................................24
(82A) Cool Stage 2-On Delta .........................................................................................................................................24
(83A) Cool Stage 2-Off Delta.........................................................................................................................................25
(84A) Compressor Cool Stage 2 Upstage Delay (CC2SUD) ..............................................................................................25
(85A) Compressor Heat Stage 2 Upstage Delay (CH2SUD) ..............................................................................................25
(88A) Reversing Valve Delay (RVD) .................................................................................................................................25
Continued on next page...
2
P/N 032498h
Table of Contents (continued)
Parameters Applicable for Radiant Underfloor Heating System ....................................................................................26
Radiant Underfloor Heating Control Summary ............................................................................................................26
Pulse Width Modulation (PWM) Temperature Control (for relay signals only) ...................................................................26
0–10 V- Control (for 0–10 V- signal only) .....................................................................................................................26
Duty Cycle Sample Adaptation (for both relay and 0–10 V- signals) ..............................................................................26
Parameter details ...........................................................................................................................................................27
(54A) Minimum Pulse Width ..........................................................................................................................................27
(90A) Slab Maximum .................................................................................................................................................... 27
(91A) Slab Minimum .....................................................................................................................................................27
(92A) Slab Setpoint ......................................................................................................................................................27
(93A) Floor 100% Differential ........................................................................................................................................27
(94A) Floor 0% Differential ............................................................................................................................................ 27
(95A) Cycles Per Hour (CPH) .........................................................................................................................................27
Parameters Applicable for 0–10 V- Fan Coil Units ........................................................................................................27
(50A) Proportional Fan Minimum ...................................................................................................................................27
(51A) Proportional Fan Low Speed ................................................................................................................................27
(52A) Proportional Fan Medium Speed ..........................................................................................................................27
(53A) Proportional Fan High Speed ...............................................................................................................................27
(54A) Minimum Valve Percent Open ...............................................................................................................................27
(55A) Valve Fully Open Differential ................................................................................................................................. 27
(56A) Non-proportional Analog Output ..........................................................................................................................27
Parameters Applicable for 2-pipe Fan Coil Units ............................................................................................................28
(40A) Change Over to Heat for Pipe Temperature ............................................................................................................28
(41A) Change Over to Cool for Pipe Temperature ............................................................................................................28
(42A) Enable Purge Function .........................................................................................................................................28
(43A) Purge Valve On-Time ...........................................................................................................................................28
(44A) Purge Valve Off-Time ...........................................................................................................................................28
Parameters Applicable to a FCU with Multi Speed Fan ..................................................................................................28
05A) Fan High Differential .............................................................................................................................................28
(09A) Kick-Start Fan .....................................................................................................................................................28
Step 6: Verification ...........................................................................................................................................................29
Troubleshooting .................................................................................................................................................................30
Appendix A ...........................................................................................................................................................................31
1. Heat Stage Relays .........................................................................................................................................................31
2. Cool Stage Relays .........................................................................................................................................................31
3. Control Diagrams for Turning On / Off Different Heat and Cool Stages .....................................................................32
Appendix B: Installation Worksheet ..........................................................................................................................35
Appendix C: User Interface for the Thermostat...................................................................................................39
Appendix D: Reenter Configuration Menus ...........................................................................................................40
Appendix E: Determine Firmware Version (optional) .........................................................................................40
3
P/N 032498h
Description
This programming guide provides information on how to configure the HomeWorks QS Palladiom Thermostat and
HomeWorks QS Palladiom HVAC controller (SMC55-HWQS, SMC55-RESI). All the references made to SMC55-HWQS
throughout the document will apply to SMC55-RESI as well.
The HomeWorks QS Palladiom thermostat and SMC55-HWQS are a two-piece solution offered by Lutron to control HVAC
equipment. The thermostat provides the user interface and the SMC55-HWQS sends signals to control the HVAC equipment.
The SMC55-HWQS must be configured correctly to control the HVAC equipment. The thermostat can also connect to third-party
HVAC controllers, or be used as a Companion Thermostat, which is described in later sections.
WARNING
This guide illustrates multiple steps for configuring the Palladiom thermostat and HVAC controller.
Step 1 illustrates how to identify the HVAC equipment and confirm system compatibility.
Step 2 covers the equipment configuration mode.
Step 3 explains the controller selection menu.
Step 4 details the basic parameters required to configure the SMC55-HWQS for compatibility.
Step 5 covers the details of the advanced parameters for the SMC55-HWQS which are used to modify the functionality of the
HVAC equipment. Advanced parameters are set to a default value and should only be changed if the system needs further
configuration.
After configuring both the basic and the advanced parameters, refer to Step 6 to verify the basic system functionality based
on the configuration of the SMC55-HWQS.
Appendix A includes control diagrams to explain the On/Off deltas for heating and cooling stages.
Appendix B provides a worksheet which should be kept and used by the installer during installation. Before configuring the
SMC55-HWQS, write the necessary values for the basic and advanced parameters in the allotted space.
Appendix C gives more details about the functionality of different buttons and user interface on the thermostat.
Shock Hazard - Improper configuration can cause property damage, personal injury, or death. Installation and
service must be performed by a licensed professional HVAC installer (or equivalent) or service agency.
4
P/N 032498h
Step 1: Identify the HVAC Equipment and Confirm Device Installation
Identify the HVAC Equipment
First, identify the type of HVAC equipment that is installed. Check the installation manual or label on the HVAC equipment.
The Palladiom Thermostat solution is compatible with most residential HVAC systems, including:
1. Conventional forced air systems using gas, electric, or oil heat as well as compressor-based, cooling-only as split systems or
packaged units.
2. Fan Coil Units (FCUs)
3. Heat-pump systems
4. Hydronic or electric underfloor/radiant heating systems 1
5. Specific VRF/VRV systems. See the HomeWorks QS Palladiom Thermostat specification (Lutron P/N 3691033) at
www.lutron.com for further information.
Confirm Device Installation
Confirm the Palladiom Thermostat is installed. For hardware installation and wiring details, refer to the HomeWorks QS
Thermostat Installation Guide at www.lutron.com/TechnicalDocumentLibrary/043495.pdf. If connecting a third-party HVAC
controller to the thermostat, refer to the controller’s installation guides to confirm installation of the controller. Connecting the
Palladiom thermostat to third-party controllers is explained in the following Lutron app notes:
Daikin® VRV Systems and Other VRF Systems
Requires one of these hardware options:
• HomeWorks QS Palladiom thermostat and CoolAutomationTM CoolPlug interface. 2 See Application Note #660 (048660) at
www.lutron.com
• HomeWorks QS Palladiom thermostat with HomeWorks QS processor and CoolAutomationTM interface.
See Application Note #650 (048650) at www.lutron.com
Mitsubishi® VRF Systems
Requires one of these hardware options:
• HomeWorks QS Palladiom thermostat and Mitsubishi® Procon A1M interface. 2 See Application Note #661 (048661) at
www.lutron.com
• HomeWorks QS Palladiom thermostat with HomeWorks QS processor and CoolAutomationTM interface. 2
See Application Note #650 (048650) at www.lutron.com
• HomeWorks QS Palladiom thermostat with HomeWorks QS Palladiom HVAC controller and Mitsubishi® thermostat controller
inter face. 2 See Application Note #585 (048585) at www.lutron.com
LG® VRF Systems
Requires one of these hardware options:
• HomeWorks QS Palladiom thermostat and LG® PDRYCB500 interface. 2 See Application Note #662 (048662) at www.lutron.com
• HomeWorks QS Palladiom thermostat with HomeWorks QS processor and CoolAutomationTM interface. 2
See Application Note #650 (048650) at www.lutron.com
• HomeWorks QS Palladiom thermostat with HomeWorks QS Palladiom HVAC controller and LG® thermostat controller interface. 2
See Application Note #627 (048627) at www.lutron.com
Underfloor Heating Systems with Heatmiser Interface
Requires:
• HomeWorks QS Palladiom thermostat with HomeWorks QS processor and Heatmiser interface.
Integration with HomeWorks QS document.
1
Included with SMC55-HWQS version 7420 or newer, SMC55-RESI version 7302 or newer and HomeWorks Palladiom Thermostat version 1.10 or newer.
2
Provided by others.
3
For information about additional CoolAutomation interfaces, see www.coolautomation.com
Continued on next page...
1
2,3
2
See Heatmiser HVAC
5
P/N 032498h
Step 1: Identify the HVAC Equipment and Confirm Device Installation
(continued)
Confirm Device Installation
(continued)
If connecting the Palladiom Thermostat to the SMC55-HWQS, they must be connected over the HVAC controller communication
link. Refer to Figure 1 for the wiring required to install the SMC55-HWQS with the thermostat. For hardware installation and
wiring details refer to the HomeWorks QS Thermostat Installation Guide (P/N 043495) at www.lutron.com.
Figure 1: SMC55-HWQS Setup for Configuration Using a Thermostat
HomeWorks QS
processor
Relay Terminals
SPST(NO) 1 A 24 V~ maximum relays
Terminal Conventional Heat Pump
#5 Heat stage 1 (W1)
Heating stage1
#6
transformer (RH)
Cooling / compressor
#7
transformer (R
)
C
#8 Compressor stage1 (Y
Compressor stage2
#9
1
(Y
)
2
Changeover heat
pump valve (O/B)
Heating
transformer(RH)
Cooling
transformer(RC)
Compressor
)
1
stage 1(Y1)
Compressor
stage 1(Y2)
1
Fan Coil Unit Radiant Floor
Hot valve (H
Heat valve
transformer(RH) or
Valve transformer(R)
Fan transformer (R
) Heat stage 1 (W1)
VALVE
Heat stage 1
transformer (R1)
) –
FAN
Fan high (G3) –
Fan medium (G2) –
#10 Fan (G) Fan (G) Fan low (G1) –
#11 Heat stage 2 (W
#12
Heating stage2
transformer (R
1
)
2
1
)
H2
Auxiliary heat (AUX) Cold valve (C
Auxiliary heat
transformer(R
AUX
)
Cold valve
transformer (RC)
) –
VALVE
2
–
43
21
Common
V+
MUX
_
HomeWorks
QS Palladiom
thermostat
Gray (G) Com
White (+) MUX
Black (−) _
QS Link
Power and
communication
#5
#6
#7
#8
#9
#10
#11
#12
HomeWorks QS
Palladiom HVAC
Controller
Not used
HVAC Controller Power (from HVAC system transformers)
24 V~ IEC / SELV / PELV / NECR Class 2
White (heat)
Black (common)
Green (fan)
Yellow (cool)
43G5
Red (R
AO
) Heat transformer
H
Gray /Red (C) Common
Black
Black
Orange / White (connect to black common wire for additional HVAC controllers only. This connection will set
the Modbus address to 02)
Wire harness for 0–10Vvalves and fan controls
Blue / Red (FCU changeover sensor or radiant floor slab sensor)
Blue (remote temperature sensor)
Optional signal wires
1
Included with SMC55-RESI version 7302 or newer and HomeWorks Palladiom Thermostat version 1.10 or newer.
2
Included with SMC55-HWQS version 7420 or newer and HomeWorks Palladiom Thermostat version 1.10 or newer.
6
P/N 032498h
Programming Menu Overview
1. Equipment configuration mode: Indicates if 1 or 2 HVAC equipment types are used and what equipment is connected.
2. HVAC controller selection mode: Indicates what type of HVAC controller is being used and sets the address for it (if needed).
3. Basic configuration mode: Configures the HVAC controller according to the type of HVAC system.
Note: Depending on the options selected, certain programming modes may be skipped. It may be necessary to enter certain
programming modes twice if there are two equipment types. The thermostat will only display menus that are relevant to the
configurations selected.
4. Advanced configuration mode (Optional)
Step 2: Equipment Configuration Mode
Included with thermostat version 3.0 or later
WARNING
1. Enter equipment configuration mode. When a thermostat receives power, it will automatically enter equipment configuration
mode if equipment configuration has not been previously completed.
If no HVAC controller is going to be connected directly to the thermostat, skip this section. This is known as a companion thermostat
and configuration will be completed by a certified Lutron dealer via the HomeWorks QS designer software.
2. Select value for equipment configuration: Select the configuration option which describes the HVAC equipment
connected to the thermostat. Using the table below, press or to select the correct equipment configuration being used
and press and hold to save the configuration. The thermostat will then enter HVAC controller selection mode for the first zone.
Shock Hazard. Improper configuration can cause property damage, personal injury, or death. Installation and
service must be performed by a licensed professional HVAC installer (or the equivalent) or service agency.
Figure 2: Display on Thermostat in Equipment Configuration Mode
Parameter value
Set
Hold 3 seconds to save and
exit configuration mode.
Table 1: Options for Equipment Configuration
Parameter
Value
01 1
02
03
Equipment
Typ e
2 – both heating
and cooling
equipment
connected to the
thermostat
2 – only heating
equipment
connected to the
thermostat
Description System Example
There is a single piece of equipment attached
to the HVAC controller communication link.
The thermostat controls two dif ferent HVAC
equipment types. Both pieces of HVAC
equipment are connected to the HVAC
controller communication link.
The thermostat controls two dif ferent HVAC
equipment types. Only heating equipment is
physically connected to the HVAC controller
communication link.
EC = Equipment configuration mode
Press to change parameter value
The thermostat is connected to an SMC55-HWQS which handles both
heating and cooling of the HVAC zone.
The thermostat is connected to an SMC55-HWQS used for underfloor
heating of the HVAC zone. There is also a Cool Automation CoolPlug
interface connected to the same thermostat used to cool the space. Both
pieces of equipment are in the same HVAC zone and the thermostat can
be used to heat or cool the zone.
The thermostat is connected to an SMC55-HWQS used for underfloor
heating of the HVAC zone. There is also 3rd party HVAC equipment
connected to the HomeWorks QS processor via integration, which is used
to cool the same zone. The thermostat can be used to heat or cool the
zone.
04
2 – only cooling
equipment
connected to the
thermostat
The thermostat controls two dif ferent HVAC
equipment types. Only cooling equipment is
physically connected to the HVAC controller
communication link.
The thermostat is connected to a Cool Automation CoolPlug interface to
handle cooling the HVAC zone. There is also 3rd party HVAC equipment
connected to the HomeWorks QS processor via integration, which is used to
heat the same zone. The thermostat can be used to heat or cool the zone.
7
P/N 032498h
Step 3: Select the HVAC Controller
1
This section explains configuring the thermostat for the type of controller connected to it. Configuration is required when a new
thermostat is added.
WARNING
Shock Hazard. Improper configuration can cause property damage, personal injury, or death. Installation and
service must be performed by a licensed professional HVAC installer (or the equivalent) or service agency.
1. Enter HVAC controller selection mode. The thermostat will automatically enter HVAC controller selection mode if an HVAC
controller has not previously been selected.
If no HVAC controller is going to be connected directly to the thermostat, skip this section. This is known as a companion thermostat
and configuration will be completed by a certified Lutron dealer via the HomeWorks QS Designer software.
Figure 3: Display on Thermostat in HVAC Controller selection mode
Parameter value
Equipment type configuration
(if two equipment types).
Set
Press to select current value
and proceed to next parameter.
Press to go back to previous
step.
CO = HVAC controller
selection mode
Parameter ID
Press to change parameter value
2. Select value for parameter ID “01”: Select the HVAC controller connected to the thermostat. Using the table below, press
or to select the correct option for the HVAC controller being used and press .
Values based on HVAC controller
Parameter ID 01:
HVAC controller option
Parameter ID 02:
Modbus address
SMC55-RESI
01 02 03 04
01-02*
Mitsubishi
A1M
01-31
(set by DIP
switches
1-5 )*
Cool Automation
CoolPlug
99*
LG
PDRYCB500
01-08
(set by DIP
switches 1-4)*
3. Select value for parameter ID “02”: Select the Modbus address.* Using the table above, press or to select the desired
Modbus address and press .
* For information see instructions included with the controller.
4. Exit HVAC controller selection mode. When “End” is shown, press and hold until the backlight
flashes (3seconds).
Note: “E1” will show on the display if the thermostat is not able to communicate with the HVAC controller.
See the Troubleshooting section on page 30.
Note: If a new HVAC controller is connected to the thermostat, the HVAC controller selection mode will
need to be re-entered. To re-enter the controller selection menu follow the steps below.
a. Press and hold
b. For controller selection mode - Release the buttons and immediately press and hold
and until the backlight flashes (3 seconds).
until the backlight stops flashing and
“CO” is shown (3 seconds).
1
Included with HomeWorks Palladiom Thermostat version 1.10 or newer.
8
P/N 032498h
Step 4: Set the SMC55-HWQS Basic Parameters for System Compatibility
This section explains the basic configuration parameters for the SMC55-HWQS. Basic parameters are the critical parameters
which must be configured to control the HVAC equipment. The thermostat will not begin normal operation until these parameters
are configured.
WARNING
If a thermostat is connected to an SMC55-HWQS that has not yet been configured, the thermostat will automatically enter Basic
Configuration Mode. If it is desired to enter Basic Configuration Mode manually, follow the steps below.
1. Cycle power to the thermostat. The remaining 2 steps need to be completed within 15 minutes. If not, repeat Step 1.
2. Press and hold and for 3 seconds until the button backlight is lit and the display flashes.
3. Release the buttons and immediately (with in 15 seconds) press and hold for 3 seconds until the button backlight stops
flashing.
The display on the thermostat will be as shown in Figure 4:
Figure 4: Display on Thermostat in Basic Configuration Mode
Equipment type configuration
(if two equipment types).
Shock Hazard. Improper configuration can cause property damage, personal injury, or death. Installation and
service must be performed by a licensed professional HVAC installer (or the equivalent) or service agency.
Set
Save current parameter value
and go to next parameter
Return to previous parmeter
Increase current parameter value
Decrease current parameter value
In Figure 4, ‘01b’ represents the basic configuration parameter for SMC55-HWQS. ‘00’ represents the value of this parameter
and ‘bA’ indicates that this is a basic parameter.
The following table describes the buttons that are used to select a value of the basic configuration parameter for configuring the
SMC55-HWQS.
Table 2: Buttons Used for Configuring Basic Configuration Parameters
Thermostat Buttons Action
Press to increase/decrease the value of the basic
configuration parameter being displayed on the thermostat.
Press to save the value and go to the next applicable basic
configuration parameter.
Press and hold to exit the ‘End’ screen
Continued on next page...
Press to go back to the previous parameter.
9
P/N 032498h
Step 4: Set the SMC55-HWQS Basic Parameters for System
Compatibility (continued)
Verify the wiring connections between the thermostat, the SMC55-HWQS, and HVAC equipment as shown in Figure 1 before
starting to configure the SMC55-HWQS. Table 3 below lists the details of all the basic configuration parameters - applicable
systems, basic configuration parameter index, description, default value, and the range of values for each parameter. For the
HVAC system to function properly these parameters must be configured correctly.
Table 3: Basic Configuration Parameters
Applicable
Systems
All 01b Sys tem Ty pe
Heat
Pump and
Conventional
Basic
Configuration
Parameter
02b Heat Stages
03b
04b
Name Description Default Value Range
Run Auxiliary Heat
) with
(Aux/W
2
other heat stages
Auxiliary Heat
) upstage
(Aux/W
2
delay
00: Conventional system
01: Heat pump
02: 2-Pipe FCU
03: 4-Pipe FCU
04: Underfloor radiant heat
05: Underfloor electric heat
00: None (No Heat Stage)
01: 1 Stage ( W
02: 2 Stage: 1 Compressor and 1 Auxiliar y
03: 2 Stage: 2 Compressor, No Auxiliary
04: 3 Stage: 2 Compressor and 1 Auxiliar y
00: No
01: Ye s
Skipped if no Aux/W
00: 0 minutes
01: 1 minute
02: 2 minutes
03: 5 minutes
04: 10 minutes
05: 20 minutes
06: 30 minutes
07: 1 hour
08: 2 hours
09: 4 hours
10: 8 hours
11- 24 : 11- 24 hour s
Skipped if no Aux/W
)
1
2
2
00: Conventional system 00–05
01: 1 Stage ( W1) 00–04
01: Yes 00–01
05: 20 minutes 00 –24
05b Cool Stages
Conventional 06b Heat Fan Control
Heat Pump 07b
Fan Coil Units
and Radiant
Floor
Fan Coil Units
Radiant Floor 11b Floor Control Type
08b
09b Fa n Type
10b 2-pipe Mode
Change over /
Reversing Valve
(O/B)
Valve / Eleme nt
Type
Continued on next page...
00: None (no cool stage)
01: 1 Cool stage ( Y1)
02: 2 Cool stages (Y1, Y2)
00: Equipment controls fan
01: Thermostat controls fan
00: On for cooling (O)
01: On for heating (B)
00: Relay
01: 0–10 V02: Floating point (Fan coil units only)
00: Relay (G1, G2, G3)
01: 0–10 V-
01: Heat only
02: Cool only
03: Changeover
01: Indoor air only
02: Indoor air and floor limiting
03: Floor temperature only
10
01: 1 Cool stage (Y1) 00–02
01: Thermostat controls fan
00–01
00: On for cooling (O)
00: Relay 00–01
00: Relay (G1, G2, G3) 00–01
03: Changeover 01–03
01: Indoor air only 01–03
P/N 032498h
Step 4: Set the SMC55-HWQS Basic Parameters for System
Compatibility (continued)
The different basic configuration parameters and the values available for each of these parameters are listed below:
(01b): System Type
Use this parameter to select the HVAC system type. Refer to the HVAC equipment manual or label to identify the type of HVAC
equipment. The different options available for this parameter are listed in the table below:
Table 4: Values for Different Types of HVAC Equipment
Available Options Default Value
00: Conventional
01: Heat pump
02: 2-pipe FCU
03: 4-pipe FCU
04: Hydronic underfloor heating
05: Electric underfloor heating
(02b): Heat Stages
Applicable systems: Conventional and Heat Pump.
Use this parameter to set the number of supported heat stages. This parameter will be skipped if you select an option anything
other than ‘00: Conventional’ or ‘01: Heat Pump’ for the previous parameter (01b). Refer to the HVAC equipment installation
manual or label for the number of supported heat stages. The different options available for this parameter are listed in the table
below:
00: Conventional
Table 5: Values for Different Heat Stages Based on System Type
System type (01b) Values for heat Stages (02b) Default Value
00: Conventional
01: Heat pump
00: No heat stage
01: 1 heat stage ( W
02: 1 primary source and 1 auxiliary source (W2)
00: No heat stage
01: 1 stage (W
02: 2 stage (1 compressor and 1 auxiliary)
03: 2 stage (2 compressors and no auxiliary)
04: 3 stage (2 compressors and 1 auxiliary
)
1
)
1
01: 1 heat stage ( W1)
02: 2 stage (1 compressor
and 1 auxiliary)
Continued on next page...
11
P/N 032498h
Step 4: Set the SMC55-HWQS Basic Parameters for System
Compatibility (continued)
(03b): Run Auxiliary Heat (Aux / W2) With Other Heat Stages 1
Applicable Systems: Conventional and Heat Pump only if auxiliary heat stage is supported by the system.
Use this parameter to select whether or not the auxiliary heating stage can be allowed to run along with the other heat stages.
This parameter will be skipped if you select an option anything other than ‘02: 2 stages’ (1 Compressor and
1 Auxiliary/1 Primary source and 1 Auxiliary source [W2]) or ‘04: 3 stage’ (2 Compressor and 1 Auxiliary) for the previous
parameter (02b).
Note for Heat Pump: If auxiliary heat stage runs on gas/oil then it is recommended to choose a value 00: Do not run auxiliary
with other heat stages. Refer to the HVAC equipment manual to determine which value to select.
The different options available for this parameter are listed in the table below:
Table 6: Values for Running Auxiliary Heat With Other Heat Stages
Run Aux/W2 With Other Heat Stages (03b) Default Value of 03b
00: do not run auxiliary with other heat stages
01: Run auxiliary with other heat stages
(04b): Auxiliary Heat (Aux/W2) Upstage Delay 1
01: Run auxiliary with other heat
stages
Applicable systems: Conventional and Heat Pump only if an auxiliary heat stage is supported.
Use this parameter to select the delay between starting the first heat stage and starting the auxiliary heating stage. This
parameter will be skipped if you select a system without auxiliary heat
The different options available for this parameter are listed in the table below:
Table 7: Values for Upstage Auxiliary Delay
Auxiliary Heat (Aux/W2)
Upstage Delay (04b)
00: 0 minutes
01: 1 minute
02: 2 minutes
03: 5 minutes
04: 10 minutes
05: 20 minutes
06: 30 minutes
07: 1 hour
08: 2 hours
09: 4 hours
10: 8 hours
11- 24 : 11- 24 hour s
Default Value
of 04b
05: 20 minutes
1
Included with SMC55-HWQS version 7420 or newer, SMC55-RESI version 7302 or newer and HomeWorks Palladiom Thermostat version 1.10 or newer.
Continued on next page...
12
P/N 032498h
Step 4: Set the SMC55-HWQS Basic Parameters for System
Compatibility (continued)
(05b): Cool Stages
Applicable Systems: Conventional and Heat Pump.
Use this parameter to select the number of cool stages. This parameter will be skipped in the menu if you select any option other
than ‘00: Conventional’ or ‘01: Heat Pump’ for the previous parameter (01b). Refer to your HVAC equipment installation manual or
label for the number of supported cool stages. The different options available for this parameter are listed in the table below:
Table 8: Values for Cooling Stages
Values for Cooling
Stages in 05b
00: None
01: 1 stage
02: 2 stage
Refer to Table 21 in Appendix A for the details about the different relays that get energized in the different cool stages for Heat
Pump and Conventional systems.
(06b): Heat Fan Control
Applicable System: Conventional systems with at least one heat stage.
Default Value
01: 1 stage
Use this parameter to specify if the SMC55-HWQS should turn on the fan when turning on the heat. For some HVAC system
types, a control signal for the fan is not needed from the SMC55-HWQS because the equipment automatically turns the fan
on when there is a call for heat. In such cases ensure that AUTO is enabled in the available Fan Modes in the HomeWorks QS
designer software.
This parameter will be skipped and will default to have the fan turn on with the heating if you select a system type that is not
conventional or has no heating stages. Refer to your HVAC equipment manual and HVAC equipment label to identify the type of
conventional system. The different options available for this parameter are listed in the table below:
Table 9: Values for Heat Fan Type
Values for 07b Default Value
00: Equipment controls the fan relay
01: Thermostat controls the fan relay
01: Thermostat controls the fan relay
(07b): Changeover/Reversing Valve (O/B) Type 1
Applicable System: Heat Pump.
Use this parameter to select the type of reversing valve: energize for heating or energize for cooling. This parameter will be
skipped in the menu if you select any option other than ‘01: Heat Pump’ for the previous parameter (01b). Refer to your HVAC
equipment manual to identify the type of reversing valve (O/B). The different options available for this parameter are listed in the
table below:
Table 10: Values for Different Types of Reversing Valves
Changeover/Reversing Valve
(O/B) Type (07b)
00: Energize for cooling (O)
01: Energize for heating (B)
Default Value
00: Energize for cooling (O)
1
Included with SMC55-HWQS version 7420 or newer, SMC55-RESI version 7302 or newer and HomeWorks Palladiom Thermostat version 1.10 or newer.
Continued on next page...
13
Loading...