Trane Tracer TD7 User manual

RLC-SVU007E-GB
Tracer™ TD7 with UC 800
January 2021
Confidential and proprietaryTrane information
Original instructions

Table of Contents
RLC-SVU007E-GB
4 UNT-PRC002-GB
Technical Data
FWD 08 12 20 30 45
Power supply (V/Ph/Hz) 230/1/50
Capacities
Cooling capacity on water (1) (kW) 5,2 8,3 15 18,8 30,1
Heating capacity on water (2) (kW) 6,3 11,9 18,9 20,9 38,2
Fan motor (type) 2 x direct drive centrifugal
Fan power input (3) (kW) 0,23 0,46 0,65 1,04 1,51
Current amps (3) (A) 1,1 2,2 3,1 4,7 5,5
Start-up amps (A) 3,2 5,5 9,3 14,1 16,5
Air flow
minimum (m3/h) 490 980 1400 1800 2700
nominal (m3/h) 820 1650 2300 3000 4500
maximum (m3/h) 980 1970 2600 3600 5400
Main coil
Water entering/leaving connections (type) ISO R7 rotating female
(Dia) 3/4" 3/4" 1 1/2" 1 1/2" 1 1/2"
Electric heater (accessory for blower only)
Electric power supply (V/Ph/Hz) 230/1/50 230/1/50 or 400/3/50 400/3/50 400/3/50 400/3/50
Heating capacity (kW) 2/4 8 10 12 12
Hot water coil (accessory for blower only)
Heating capacity (4) (kW) 6,3 12 17,4 22,4 34,5
G2 filter (filter box accessory)
Quantity 2 2 2 2 2
Dimensions ( LxWxth) (mm) 386x221x8 486x271x8 586x321x8 586*421*8 586*621*8
G4 filter (filter box accessory)
Quantity - 2 2 2 2
Dimensions ( LxWxth) (mm) - 486x264x48 586x314x48 586*414*48 586*614*48
Condensate pump (accessory) (type) Centrifugal
Water flow - lift height (l/h - mm) 24 - 500
Not available for FWD30 and FWD45
Sound level (L/M/H speed)
Sound pressure level (5) (dB(A)) 36/40/43 38/41/44 46/50/53 47/52/57 47/52/58
Sound power level (5) (dB(A)) 46/50/53 48/51/54 56/60/63 57/62/67 57/62/68
Unit dimensions
Width x Depth (mm) 890 x 600 1090 x 710 1290 x 820 1290 x 970 1290 x 1090
Height (mm) 250 300 350 450 650
Shipped unit dimensions
Width x Depth (mm) 933 x 644 1133 x 754 1333 x 864 1333 x 1008 1333*1133
Height (mm) 260 310 360 460 660
Weight (kg) 32 46 61 76 118
Colour galvanised steel
Recommended fuse size
Unit alone (aM/gI) (A) 8/16 8/16 8/16 8/25 8/25
Unit with electric heater (gI) (A) 16 (2kW),25 (4kW) 40 (230V),3*16 (400V) 3*20 3*25 3*25
(1) Conditions: Water entering/leaving temperature: 7/12 °C, Air inlet temperature 27/19°C DB/WB - Nominal air flow
(2) Conditions: Water entering/leaving temperature: 50/45 °C, Air inlet temperature 20°C DB - Nominal air flow
(3) At high speed with nominal air flow.
(4) Water entering/leaving temperature 90/70 °C, air inlet temperature 20 °C DB, Nominal air flow.
(5) A rectangular glass wool duct 1m50 long is placed on the blower.The measurement is taken in the room containing the blower unit.
Heat exchanger operating limits:
FWD:
*water temperature: max 100° C
*absolute service pressure: min 1 bar/max 11 bars
Accessories - Hot water coil:
*water temperature: min. +2° C/max. 100° C
*absolute service pressure: min 1 bar/max 11 bars
2
General Recommendations .............................................................................. 3
Installer-Supplied Components / Interconnecting Wiring .............................. 5
Installer-Supplied Components............................................................... 5
Interconnecting Wiring............................................................................. 5
Pump relay Operation for multi-pipe unit .............................................. 5
Programmable Relays ....................................................................................... 7
Relay Assignments Using ................................................................................. 8
Tracer™ TU................................................................................................ 8
Low Voltage Wiring / Ice Making (Optional)..................................................... 9
Low Voltage Wiring .................................................................................. 9
Ice Making (Optional)............................................................................... 9
External setpoints & capacity outputs (Optional) ......................................... 11
External Chilled Water Setpoint (ECWS)............................................... 11
External Current Limit Setpoint (ECLS) ................................................ 12
ECWS and ECLS Analog Input Signal Wiring Details .......................... 13
Chilled Water Reset (CWR) .............................................................................. 14
Functional Description ........................................................................... 14
Diagnostic ............................................................................................... 17
Smart Communication Protocol ..................................................................... 18
LonTalk™ Interface (LCI-C)..................................................................... 18
BACnet Interface (BCNT)........................................................................ 18
BACnetTesting Laboratory (BTL) Certification..................................... 18
ModBus RTU Interface ........................................................................... 18
Wiring and Port Descriptions for MODBUS, BACnet and LonTalk............... 19
Smart Com protocol............................................................................... 19
Rotary Switches ...................................................................................... 19
LED Description and Operation............................................................. 20
TracerTD7 Operator Interface ......................................................................... 21
Tracer™TU ....................................................................................................... 22

RLC-SVU007E-GB 3
11UNT-PRC002-GB
Sound power levels
Discharge
Measurement conditions:
Measurements taken in a room adjacent to the room containing the FWD, at the outlet of the rectangular duct (1.5 m
long) fixed to its discharge opening.
Fan Power level in dB(A), per Hz frequency band Overall power
Unit speed 125 250 500 1000 2000 4000 8000 dB(A)
1 55 50 42 37 37 31 30 46
FWD 08 2 57 54 47 40 30 38 40 50
3 58 57 50 42 32 40 43 53
1 57 51 45 42 34 33 28 48
FWD 10 2 58 54 48 45 38 39 35 51
3 60 58 50 48 40 42 39 54
1 57 51 45 42 34 33 28 48
FWD 12 2 58 54 48 45 38 39 35 51
3 60 58 50 48 40 42 39 54
1 56 62 50 48 39 38 36 56
FWD 14 2 61 66 55 53 47 46 45 60
3 63 69 58 56 50 50 49 63
1 57 63 51 49 40 39 37 57
FWD 20 2 61 66 55 53 47 46 45 60
3 63 69 58 56 50 50 49 63
Intake
Measurement conditions:
Measurements taken at the horizontal air intake.
Fan Power level in dB(A), per Hz frequency band Overall power
Unit speed 125 250 500 1000 2000 4000 8000 dB(A)
1 56 55 55 53 46 45 42 57
FWD 08 2 63 62 60 60 53 53 53 64
3 66 65 63 62 56 55 57 67
1 62 58 55 58 51 48 44 61
FWD 10 2 66 63 60 62 56 55 52 66
3 70 67 63 65 59 59 57 69
1 62 58 55 58 51 48 44 61
FWD 12 2 66 63 60 62 56 55 52 66
3 70 67 63 65 59 59 57 69
1 66 65 65 65 57 50 46 68
FWD 14 2 73 72 69 71 64 59 57 74
3 78 76 73 75 69 64 63 78
1 68 72 64 64 56 52 50 69
FWD 20 2 76 76 68 71 65 61 61 75
3 78 79 71 74 69 66 66 78
As you review this manual, keep in mind that:
• All field-installed wiring must conform to European guidelines and any applicable local codes. Be sure to satisfy
proper equipment grounding requirements per European guidelines.
• Compressor motor and unit electrical data (including motor kW, voltage utilization range, rated load amps) is listed
on the chiller nameplate.
• All field-installed wiring must be checked for proper terminations, and for possible shorts or grounds.
Note:
Always refer to wiring diagrams shipped with unit submittal for specific electrical schematic and connection
information.
WARNING:
Proper field wiring and grounding required!
All field wiring MUST be performed by qualified personnel.
Improperly installed or improperly grounded machines can cause FIRE and ELECTROCUTION hazards.
To avoid these hazards, you MUST follow requirements in local electrical codes.
Failure to follow cade could result in death or serious injury.
WARNING:
Hazardous voltage w/capacitors!
Disconnect all electric power, including remote disconnects and discharge all motor start/run and AFD
(Adaptive Frequency™ Drive) capacitors before servicing.
Follow proper lockout/tagout procedures to ensure the power cannot be inadvertently energized.
• For variable frequency drives or others energy storing component provided byTrane or others, refer to the
appropriate manufacturer’s literature for allowable waiting periods for discharge of capacitors. Verify with an
appropriate voltmeter that all capacitors have discharged.
• DC bus capacitors retain hazardous voltages after input power has been disconnected. Follow proper lockout/
tagout procedures to ensure the power cannot be inadvertently energized. After disconnecting input power,
wait five (5) minutes for units which are equipped with EC fans and wait twenty (20) minutes for units which
are equipped with variable frequency drive (0V DC) before touching any internal components.
Failure to follow these instructions could result in death or serious injury.
For additional information regarding the safe discharge of capacitors, see “Adaptive Frequency™ Drive (AFD3)
Capacitor Discharge,” and BAS-SVX19*.
WARNING!
Hazardous Voltage - Pressurized Burning Fluid:
Before removing compressor terminal box cover for servicing, or servicing power side of control panel, CLOSE
COMPRESSOR DISCHARGE SERVICE VALVE and disconnect all electric power including remote disconnects.
Discharge all motor start/run capacitors. Follow lockout/tagout procedures to ensure the power cannot be
inadvertently energized. Verify with an appropriate voltmeter that all capacitors have discharged.
The compressor contains hot, pressurized refrigerant. Motor terminals act as a seal against this refrigerant. Care
should be taken when servicing NOT to damage or loosen motor terminals.
Do not operate compressor without terminal box cover in place. Failure to follow all electrical safety precautions
could result in death or serious injury.
For additional information regarding the safe discharge of capacitors, see “Adaptive Frequency™ Drive (AFD3)
Capacitor Discharge,” and BAS-SVX19*.
NOTICE:
Use Copper Conductors Only!
Unit terminals are not designed to accept other types of conductors. Failure to use copper conductors could result in
equipment damage.
Important:
To prevent control malfunctions, do not run low voltage wiring (<30 V) in conduit with conductors carrying more than
30 volts.
General Recommendations

RLC-SVU007E-GB
4
4 UNT-PRC002-GB
Technical Data
FWD 08 12 20 30 45
Power supply (V/Ph/Hz) 230/1/50
Capacities
Cooling capacity on water (1) (kW) 5,2 8,3 15 18,8 30,1
Heating capacity on water (2) (kW) 6,3 11,9 18,9 20,9 38,2
Fan motor (type) 2 x direct drive centrifugal
Fan power input (3) (kW) 0,23 0,46 0,65 1,04 1,51
Current amps (3) (A) 1,1 2,2 3,1 4,7 5,5
Start-up amps (A) 3,2 5,5 9,3 14,1 16,5
Air flow
minimum (m3/h) 490 980 1400 1800 2700
nominal (m3/h) 820 1650 2300 3000 4500
maximum (m3/h) 980 1970 2600 3600 5400
Main coil
Water entering/leaving connections (type) ISO R7 rotating female
(Dia) 3/4" 3/4" 1 1/2" 1 1/2" 1 1/2"
Electric heater (accessory for blower only)
Electric power supply (V/Ph/Hz) 230/1/50 230/1/50 or 400/3/50 400/3/50 400/3/50 400/3/50
Heating capacity (kW) 2/4 8 10 12 12
Hot water coil (accessory for blower only)
Heating capacity (4) (kW) 6,3 12 17,4 22,4 34,5
G2 filter (filter box accessory)
Quantity 2 2 2 2 2
Dimensions ( LxWxth) (mm) 386x221x8 486x271x8 586x321x8 586*421*8 586*621*8
G4 filter (filter box accessory)
Quantity - 2 2 2 2
Dimensions ( LxWxth) (mm) - 486x264x48 586x314x48 586*414*48 586*614*48
Condensate pump (accessory) (type) Centrifugal
Water flow - lift height (l/h - mm) 24 - 500
Not available for FWD30 and FWD45
Sound level (L/M/H speed)
Sound pressure level (5) (dB(A)) 36/40/43 38/41/44 46/50/53 47/52/57 47/52/58
Sound power level (5) (dB(A)) 46/50/53 48/51/54 56/60/63 57/62/67 57/62/68
Unit dimensions
Width x Depth (mm) 890 x 600 1090 x 710 1290 x 820 1290 x 970 1290 x 1090
Height (mm) 250 300 350 450 650
Shipped unit dimensions
Width x Depth (mm) 933 x 644 1133 x 754 1333 x 864 1333 x 1008 1333*1133
Height (mm) 260 310 360 460 660
Weight (kg) 32 46 61 76 118
Colour galvanised steel
Recommended fuse size
Unit alone (aM/gI) (A) 8/16 8/16 8/16 8/25 8/25
Unit with electric heater (gI) (A) 16 (2kW),25 (4kW) 40 (230V),3*16 (400V) 3*20 3*25 3*25
(1) Conditions: Water entering/leaving temperature: 7/12 °C, Air inlet temperature 27/19°C DB/WB - Nominal air flow
(2) Conditions: Water entering/leaving temperature: 50/45 °C, Air inlet temperature 20°C DB - Nominal air flow
(3) At high speed with nominal air flow.
(4) Water entering/leaving temperature 90/70 °C, air inlet temperature 20 °C DB, Nominal air flow.
(5) A rectangular glass wool duct 1m50 long is placed on the blower.The measurement is taken in the room containing the blower unit.
Heat exchanger operating limits:
FWD:
*water temperature: max 100° C
*absolute service pressure: min 1 bar/max 11 bars
Accessories - Hot water coil:
*water temperature: min. +2° C/max. 100° C
*absolute service pressure: min 1 bar/max 11 bars
General Recommendations
WARNING!
Discharge Time:
Frequency converters contain DC-link capacitors that can remain charged even when the frequency converter is not
powered.To avoid electrical hazards, disconnect AC mains, any permanent magnet type motors, and any remote DC
link power supplies, including battery backups, UPS and DC-link connections to other frequency converters. Wait for
the capacitors to fully discharge before performing any service or repair work.The amount of wait time is listed in the
DischargeTime table. Failure to wait the specified time after power has been removed before doing service or repair
could result in death or serious injury.
Table 1 –
Capacitor Discharge Times
Voltage Power Minimum waiting
time [min]
380 – 500 V 90 – 250 kW 20
315 – 800 kW 40

RLC-SVU007E-GB 5
11UNT-PRC002-GB
Sound power levels
Discharge
Measurement conditions:
Measurements taken in a room adjacent to the room containing the FWD, at the outlet of the rectangular duct (1.5 m
long) fixed to its discharge opening.
Fan Power level in dB(A), per Hz frequency band Overall power
Unit speed 125 250 500 1000 2000 4000 8000 dB(A)
1 55 50 42 37 37 31 30 46
FWD 08 2 57 54 47 40 30 38 40 50
3 58 57 50 42 32 40 43 53
1 57 51 45 42 34 33 28 48
FWD 10 2 58 54 48 45 38 39 35 51
3 60 58 50 48 40 42 39 54
1 57 51 45 42 34 33 28 48
FWD 12 2 58 54 48 45 38 39 35 51
3 60 58 50 48 40 42 39 54
1 56 62 50 48 39 38 36 56
FWD 14 2 61 66 55 53 47 46 45 60
3 63 69 58 56 50 50 49 63
1 57 63 51 49 40 39 37 57
FWD 20 2 61 66 55 53 47 46 45 60
3 63 69 58 56 50 50 49 63
Intake
Measurement conditions:
Measurements taken at the horizontal air intake.
Fan Power level in dB(A), per Hz frequency band Overall power
Unit speed 125 250 500 1000 2000 4000 8000 dB(A)
1 56 55 55 53 46 45 42 57
FWD 08 2 63 62 60 60 53 53 53 64
3 66 65 63 62 56 55 57 67
1 62 58 55 58 51 48 44 61
FWD 10 2 66 63 60 62 56 55 52 66
3 70 67 63 65 59 59 57 69
1 62 58 55 58 51 48 44 61
FWD 12 2 66 63 60 62 56 55 52 66
3 70 67 63 65 59 59 57 69
1 66 65 65 65 57 50 46 68
FWD 14 2 73 72 69 71 64 59 57 74
3 78 76 73 75 69 64 63 78
1 68 72 64 64 56 52 50 69
FWD 20 2 76 76 68 71 65 61 61 75
3 78 79 71 74 69 66 66 78
Installer-Supplied Components / Interconnecting Wiring
Installer-Supplied Components
Customer wiring interface connections are shown in the electrical schematics and connection diagrams that are
shipped with the unit.The installer must provide the following components if not ordered with the unit:
• Power supply wiring (in conduit) for all field-wired connections.
• All control (interconnecting) wiring (in conduit) for field supplied devices.
• Fused-disconnect switches or circuit breakers.
Interconnecting Wiring
Chilled Water Pump Control
NOTICE:
Equipment Damage!
If the microprocessor calls for a pump to start and water does not flow, the evaporator may be damaged
catastrophically. It is the responsibility of the installing contractor and/or the customer to ensure that a pump will
always be running when called upon by the chiller controls.
An evaporator water pump output relay closes when the chiller is given a signal to go into the Auto mode of
operation from any source.The contact is opened to turn off the pump in the event of most machine level diagnostics
to prevent pump overheat.
The relay output is required to operate the Evaporator
Water Pump (EWP) contactor. and Heat recovery Water Pump (HRWP) (multipipe unit) Contacts should be compatible
with 115/240 VAC control circuit. Normally, the EWP/HRWP relay follows the AUTO mode of the chiller. Whenever
the unit has no diagnostics and is in the AUTO mode, regardless of where the auto command is coming from, the
normally open relay is energized. When the unit exits the AUTO mode, the relay is timed to open in an adjustable
(usingTU orTD7) 0 to 30 minutes.
The non-AUTO modes, in which the pumps are stopped, includes Reset, Stop, External Stop, Remote Display Stop,
Stopped byTracer, Start Inhibited by Low Ambient Temp, and Ice Making complete (if applicable).
Table 2 –
Pump relay operation
Chiller Mode Relay Operation
Auto Instant Close
Ice Making Instant Close
Tracer Override Close
Stop Timed Open
Ice Complete Instant Open
Diagnostics Instant Open
When going from Stop to Auto, the Evaporator Water Pump relay is energized. Water flow switch is activating, and
flow status information back after 15 seconds.
Pump relay Operation for multi-pipe unit
Priority mode Evaporator Heat Recovery
Pump command Pump command
Cooling Only Active OFF
Heating Only OFF Active
Cooling Priority Active Active
Heating Priority Active Active
Heat Recovery Priority Active Active
Max Capacity Priority Active Active
Unit mode Evaporator or Heat recovery Pump Relay
Auto Active
Tracer Override OFF
Stop Active
Diagnostic Active

RLC-SVU007E-GB
6
4 UNT-PRC002-GB
Technical Data
FWD 08 12 20 30 45
Power supply (V/Ph/Hz) 230/1/50
Capacities
Cooling capacity on water (1) (kW) 5,2 8,3 15 18,8 30,1
Heating capacity on water (2) (kW) 6,3 11,9 18,9 20,9 38,2
Fan motor (type) 2 x direct drive centrifugal
Fan power input (3) (kW) 0,23 0,46 0,65 1,04 1,51
Current amps (3) (A) 1,1 2,2 3,1 4,7 5,5
Start-up amps (A) 3,2 5,5 9,3 14,1 16,5
Air flow
minimum (m3/h) 490 980 1400 1800 2700
nominal (m3/h) 820 1650 2300 3000 4500
maximum (m3/h) 980 1970 2600 3600 5400
Main coil
Water entering/leaving connections (type) ISO R7 rotating female
(Dia) 3/4" 3/4" 1 1/2" 1 1/2" 1 1/2"
Electric heater (accessory for blower only)
Electric power supply (V/Ph/Hz) 230/1/50 230/1/50 or 400/3/50 400/3/50 400/3/50 400/3/50
Heating capacity (kW) 2/4 8 10 12 12
Hot water coil (accessory for blower only)
Heating capacity (4) (kW) 6,3 12 17,4 22,4 34,5
G2 filter (filter box accessory)
Quantity 2 2 2 2 2
Dimensions ( LxWxth) (mm) 386x221x8 486x271x8 586x321x8 586*421*8 586*621*8
G4 filter (filter box accessory)
Quantity - 2 2 2 2
Dimensions ( LxWxth) (mm) - 486x264x48 586x314x48 586*414*48 586*614*48
Condensate pump (accessory) (type) Centrifugal
Water flow - lift height (l/h - mm) 24 - 500
Not available for FWD30 and FWD45
Sound level (L/M/H speed)
Sound pressure level (5) (dB(A)) 36/40/43 38/41/44 46/50/53 47/52/57 47/52/58
Sound power level (5) (dB(A)) 46/50/53 48/51/54 56/60/63 57/62/67 57/62/68
Unit dimensions
Width x Depth (mm) 890 x 600 1090 x 710 1290 x 820 1290 x 970 1290 x 1090
Height (mm) 250 300 350 450 650
Shipped unit dimensions
Width x Depth (mm) 933 x 644 1133 x 754 1333 x 864 1333 x 1008 1333*1133
Height (mm) 260 310 360 460 660
Weight (kg) 32 46 61 76 118
Colour galvanised steel
Recommended fuse size
Unit alone (aM/gI) (A) 8/16 8/16 8/16 8/25 8/25
Unit with electric heater (gI) (A) 16 (2kW),25 (4kW) 40 (230V),3*16 (400V) 3*20 3*25 3*25
(1) Conditions: Water entering/leaving temperature: 7/12 °C, Air inlet temperature 27/19°C DB/WB - Nominal air flow
(2) Conditions: Water entering/leaving temperature: 50/45 °C, Air inlet temperature 20°C DB - Nominal air flow
(3) At high speed with nominal air flow.
(4) Water entering/leaving temperature 90/70 °C, air inlet temperature 20 °C DB, Nominal air flow.
(5) A rectangular glass wool duct 1m50 long is placed on the blower.The measurement is taken in the room containing the blower unit.
Heat exchanger operating limits:
FWD:
*water temperature: max 100° C
*absolute service pressure: min 1 bar/max 11 bars
Accessories - Hot water coil:
*water temperature: min. +2° C/max. 100° C
*absolute service pressure: min 1 bar/max 11 bars
Installer-Supplied Components / Interconnecting Wiring
If water flow is not established in 20 minutes (for normal transition), the UC800 de-energizes the Pump relay and
generates a non-latching diagnostic. If flow returns (e.g. someone else is controlling the pump), the diagnostic is
cleared, the Pump is re-energized, and normal control resumed.
If evaporator water flow is lost once it had been established, the EWP relay remains energized and a non-latching
diagnostic is generated. If flow returns, the diagnostic is cleared and the unit returns to normal operation. In general,
when there is either a non-latching or latching diagnostic, the Pump relay is turned off as though there was a zero
time delay. Exceptions whereby the relay continues to be energized occur with:
• Low WaterTemp. diagnostic (non-latching) (Unless also accompanied by a Leaving WaterTemperature Sensor
Diagnostic)
OR
• Loss of Water Flow diagnostic (non-latching) and the unit is in the AUTO mode, after initially having proven
water flow.
Lead Lag Dual Pump
The running pump is changed each time the unit is switched on.

RLC-SVU007E-GB 7
11UNT-PRC002-GB
Sound power levels
Discharge
Measurement conditions:
Measurements taken in a room adjacent to the room containing the FWD, at the outlet of the rectangular duct (1.5 m
long) fixed to its discharge opening.
Fan Power level in dB(A), per Hz frequency band Overall power
Unit speed 125 250 500 1000 2000 4000 8000 dB(A)
1 55 50 42 37 37 31 30 46
FWD 08 2 57 54 47 40 30 38 40 50
3 58 57 50 42 32 40 43 53
1 57 51 45 42 34 33 28 48
FWD 10 2 58 54 48 45 38 39 35 51
3 60 58 50 48 40 42 39 54
1 57 51 45 42 34 33 28 48
FWD 12 2 58 54 48 45 38 39 35 51
3 60 58 50 48 40 42 39 54
1 56 62 50 48 39 38 36 56
FWD 14 2 61 66 55 53 47 46 45 60
3 63 69 58 56 50 50 49 63
1 57 63 51 49 40 39 37 57
FWD 20 2 61 66 55 53 47 46 45 60
3 63 69 58 56 50 50 49 63
Intake
Measurement conditions:
Measurements taken at the horizontal air intake.
Fan Power level in dB(A), per Hz frequency band Overall power
Unit speed 125 250 500 1000 2000 4000 8000 dB(A)
1 56 55 55 53 46 45 42 57
FWD 08 2 63 62 60 60 53 53 53 64
3 66 65 63 62 56 55 57 67
1 62 58 55 58 51 48 44 61
FWD 10 2 66 63 60 62 56 55 52 66
3 70 67 63 65 59 59 57 69
1 62 58 55 58 51 48 44 61
FWD 12 2 66 63 60 62 56 55 52 66
3 70 67 63 65 59 59 57 69
1 66 65 65 65 57 50 46 68
FWD 14 2 73 72 69 71 64 59 57 74
3 78 76 73 75 69 64 63 78
1 68 72 64 64 56 52 50 69
FWD 20 2 76 76 68 71 65 61 61 75
3 78 79 71 74 69 66 66 78
Programmable Relays
A programmable relay concept provides for enunciation of certain events or states of the chiller, selected from a list
of likely needs, while only using four physical output relays, as shown in the field wiring diagram.
The four relays are provided (generally with a Quad Relay Output LLID) as part of the Programmable Relay Option.
The relays contacts are isolated Form C (SPDT), suitable for use with 120 VAC circuits drawing up to 2.8 amps
inductive, 7.2 amps resistive, or 1/3 HP and for 240 VAC circuits drawing up to 0.5 amp resistive.
The list of events/states that can be assigned to the programmable relays can be found inTable (…) Chiller events/
Status description.The relay will be energized when the event/state occurs.
Table 3 –
Chiller event/status descriptions
Alarm - Latching This output is true whenever there is any active latching shutdown diagnostic that targets the Unit, Circuit,
or any of the Compressors on a circuit.
Alarm - NonLatching This output is true whenever there is any active non-latching shutdown diagnostic that targets the Unit,
Circuit, or any of the Compressors on a circuit.
Alarm This output is true whenever there is any active latching or non-latching shutdown diagnostic that targets
the Unit, Circuit, or any of the Compressors on a circuit.
Alarm Ckt x This output is true whenever there is any active latching or non-latching shutdown diagnostic that targets
Circuit x, or any of the Compressors on Circuit x.
Unit Limit Mode This output is true whenever a circuit on the unit has been running in one of the limit modes continuously
for the Limit Relay debounce time. A given limit or overlapping of dierent limits must be in eect
continuously for the debounce time prior to the output becoming true. It will become false if no limits are
present for the debounce time.
Compressor Running The output is true whenever any compressor is running.
Circuit x Running The output is true whenever any compressor of Circuit x is running.
Ice Building This output is true when Ice Building status is active.
Maximum Capacity The output is true whenever the unit has reached maximum capacity continuously for the Max Capacity
Relay s time. The output is false when the unit is not at maximum capacity continuously for the lter time.
Evaporator Water
Freeze Avoidance
Request
This relay output is energized any time either the Low Evaporator Water Temperature – Unit O or the
Low Evaporator Temperature Ckt x – Unit O diagnostics are active. This relay is intended for use as an
external interlock for a eld engineered and provided solution to mitigate the freeze danger implied by
these diagnostics. Generally, this would be used in cases where operation of the evaporator water pump is
unacceptable due to the system constraints, (i.e. such as mixing unconditioned warm water with controlled
supply water as provided by other parallel chillers. The relay’s output can provide the method to close
bypass valves so the circulation becomes local to the evap and excludes the load, or can be used to defeat
the evap pump override entirely while initiating an independent source of heat / ow to the evap.
None: On Multi-pipe units, it mandatory to connect Evaporator Freeze avoidance relay output to pump or valve
that rapidly establish evaporator water ow even if unit is in AUTO mode.
This selection is desirable to provide an easy way for a customer to defeat the eect of the relay, if it has
already been wired. For instance, if the relay was normally programmed as an “alarm” relay, and was
wired to a claxon, it may be desirable to temporarily defeat the feature without changing wiring.
Service request (for
Unit, Compressor(s)
or water pump):
This relay will be energized when at least one Maintenance alert condition (refer to Service required
message specication) occurs, as long as at least one of associated informational diagnostic(s) will be
active.
Warning
The output is true whenever there is any active warning diagnostic that is associated with the Unit, Circuit, or any of
the compressors on a circuit.

RLC-SVU007E-GB
8
4 UNT-PRC002-GB
Technical Data
FWD 08 12 20 30 45
Power supply (V/Ph/Hz) 230/1/50
Capacities
Cooling capacity on water (1) (kW) 5,2 8,3 15 18,8 30,1
Heating capacity on water (2) (kW) 6,3 11,9 18,9 20,9 38,2
Fan motor (type) 2 x direct drive centrifugal
Fan power input (3) (kW) 0,23 0,46 0,65 1,04 1,51
Current amps (3) (A) 1,1 2,2 3,1 4,7 5,5
Start-up amps (A) 3,2 5,5 9,3 14,1 16,5
Air flow
minimum (m3/h) 490 980 1400 1800 2700
nominal (m3/h) 820 1650 2300 3000 4500
maximum (m3/h) 980 1970 2600 3600 5400
Main coil
Water entering/leaving connections (type) ISO R7 rotating female
(Dia) 3/4" 3/4" 1 1/2" 1 1/2" 1 1/2"
Electric heater (accessory for blower only)
Electric power supply (V/Ph/Hz) 230/1/50 230/1/50 or 400/3/50 400/3/50 400/3/50 400/3/50
Heating capacity (kW) 2/4 8 10 12 12
Hot water coil (accessory for blower only)
Heating capacity (4) (kW) 6,3 12 17,4 22,4 34,5
G2 filter (filter box accessory)
Quantity 2 2 2 2 2
Dimensions ( LxWxth) (mm) 386x221x8 486x271x8 586x321x8 586*421*8 586*621*8
G4 filter (filter box accessory)
Quantity - 2 2 2 2
Dimensions ( LxWxth) (mm) - 486x264x48 586x314x48 586*414*48 586*614*48
Condensate pump (accessory) (type) Centrifugal
Water flow - lift height (l/h - mm) 24 - 500
Not available for FWD30 and FWD45
Sound level (L/M/H speed)
Sound pressure level (5) (dB(A)) 36/40/43 38/41/44 46/50/53 47/52/57 47/52/58
Sound power level (5) (dB(A)) 46/50/53 48/51/54 56/60/63 57/62/67 57/62/68
Unit dimensions
Width x Depth (mm) 890 x 600 1090 x 710 1290 x 820 1290 x 970 1290 x 1090
Height (mm) 250 300 350 450 650
Shipped unit dimensions
Width x Depth (mm) 933 x 644 1133 x 754 1333 x 864 1333 x 1008 1333*1133
Height (mm) 260 310 360 460 660
Weight (kg) 32 46 61 76 118
Colour galvanised steel
Recommended fuse size
Unit alone (aM/gI) (A) 8/16 8/16 8/16 8/25 8/25
Unit with electric heater (gI) (A) 16 (2kW),25 (4kW) 40 (230V),3*16 (400V) 3*20 3*25 3*25
(1) Conditions: Water entering/leaving temperature: 7/12 °C, Air inlet temperature 27/19°C DB/WB - Nominal air flow
(2) Conditions: Water entering/leaving temperature: 50/45 °C, Air inlet temperature 20°C DB - Nominal air flow
(3) At high speed with nominal air flow.
(4) Water entering/leaving temperature 90/70 °C, air inlet temperature 20 °C DB, Nominal air flow.
(5) A rectangular glass wool duct 1m50 long is placed on the blower.The measurement is taken in the room containing the blower unit.
Heat exchanger operating limits:
FWD:
*water temperature: max 100° C
*absolute service pressure: min 1 bar/max 11 bars
Accessories - Hot water coil:
*water temperature: min. +2° C/max. 100° C
*absolute service pressure: min 1 bar/max 11 bars
Tracer™ TU
Tracer™TU ServiceTool is used to install the Programmable Relay Option package and assign any of the above lists
of events or status to each of the four relays provided with the option. (See “Tracer™TU,” for more information on
theTracerTU service tool)The relays to be programmed are referred to by the relay’s terminal numbers on the LLID
board 1A10.
The eight available relays in the Alarm Package Option are assigned with the following defaults as follows:
Table 4 –
Alarm Package Relay option Default assignments
LLID Name LLD Software
Relay Designation Output Name Default
Operating Status
Programmable Relays
Module 1
Relay 0 Status Relay 1, J2-1,2,3 Evaporator Water Freeze Avoidance Request
Relay 1 Status Relay 2, J2-4,5,6 Maximum Capacity
Relay 2 Status Relay 3, J2-7,8,9 Compressor Running
Relay 3 Status Relay 4, J2-10,11,12 Latching Alarm
Operating Status
Programmable Relays
Module 2
Relay 4 Status Relay 5, J2-1,2,3 Alarm Ckt 2
Relay 5 Status Relay 6, J2-4,5,6 Alarm Ckt 1
Relay 6 Status Relay 7, J2-7,8,9 Alarm (Latching or Non latching)
Relay 7 Status Relay 8, J2-10,11,12 Non Latching Alarm
If any of the Alarm/Status relays are used, provide electrical power, 115 VAC with fused-disconnect to the panel
and wire through the appropriate relays (terminals on 1A10). Provide wiring (switched hot, neutral, and ground
connections) to the remote annunciation devices. Do not use power from the chiller’s control panel transformer
to power these remote devices. Refer to the field diagrams which are shipped with the unit.
Relay Assignments Using

RLC-SVU007E-GB 9
11UNT-PRC002-GB
Sound power levels
Discharge
Measurement conditions:
Measurements taken in a room adjacent to the room containing the FWD, at the outlet of the rectangular duct (1.5 m
long) fixed to its discharge opening.
Fan Power level in dB(A), per Hz frequency band Overall power
Unit speed 125 250 500 1000 2000 4000 8000 dB(A)
1 55 50 42 37 37 31 30 46
FWD 08 2 57 54 47 40 30 38 40 50
3 58 57 50 42 32 40 43 53
1 57 51 45 42 34 33 28 48
FWD 10 2 58 54 48 45 38 39 35 51
3 60 58 50 48 40 42 39 54
1 57 51 45 42 34 33 28 48
FWD 12 2 58 54 48 45 38 39 35 51
3 60 58 50 48 40 42 39 54
1 56 62 50 48 39 38 36 56
FWD 14 2 61 66 55 53 47 46 45 60
3 63 69 58 56 50 50 49 63
1 57 63 51 49 40 39 37 57
FWD 20 2 61 66 55 53 47 46 45 60
3 63 69 58 56 50 50 49 63
Intake
Measurement conditions:
Measurements taken at the horizontal air intake.
Fan Power level in dB(A), per Hz frequency band Overall power
Unit speed 125 250 500 1000 2000 4000 8000 dB(A)
1 56 55 55 53 46 45 42 57
FWD 08 2 63 62 60 60 53 53 53 64
3 66 65 63 62 56 55 57 67
1 62 58 55 58 51 48 44 61
FWD 10 2 66 63 60 62 56 55 52 66
3 70 67 63 65 59 59 57 69
1 62 58 55 58 51 48 44 61
FWD 12 2 66 63 60 62 56 55 52 66
3 70 67 63 65 59 59 57 69
1 66 65 65 65 57 50 46 68
FWD 14 2 73 72 69 71 64 59 57 74
3 78 76 73 75 69 64 63 78
1 68 72 64 64 56 52 50 69
FWD 20 2 76 76 68 71 65 61 61 75
3 78 79 71 74 69 66 66 78
Low Voltage Wiring / Ice Making (Optional)
Low Voltage Wiring
The remote devices described below require low voltage wiring. All wiring to and from these remote input devices to
the Control Panel must be made with shielded, twisted pair conductors. Be sure to ground the shielding only at the
panel.
Important:
To prevent control malfunctions, do not run low voltage wiring (<30 V) in conduit with conductors carrying more than
30 volts.
Emergency Stop
UC800 provides auxiliary control for a customer specified/installed latching trip out. When customer furnished
remote contact 6S2, the chiller will run normally when the contact is closed. When the contact opens, the unit will
stop and a manually resettable diagnostic is generated.This condition requires manual reset at the chiller switch on
the front of the control panel.
This customer-furnished contact must be compatible with 24 VDC, 12 mA resistive load.
External Auto/Stop
If the unit requires external Auto/Stop function, the installer must provide remote contact 6S1.
The chiller will run normally when the contact is closed. When contact opens, the compressor(s), if operating, will
go to the RUN: UNLOAD operating mode and cycle off. Unit operation will be inhibited. Closure of the contact will
permit the unit to return to normal operation.
Field-supplied contacts for all low voltage connections must be compatible with dry circuit 24 VDC for a 12mA
resistive load. Refer to the field diagrams that are shipped with the unit.
Ice Making (Optional)
When the Ice Making Command is removed (i.e. all the installed Ice Making inputs are set to “auto”), the
compressors shall be stopped after the run unload period (if not already stopped due to Ice Making Complete).The
chiller shall return to normal Auto mode of operation, and allowed to restart only after enforcing a 2 minute delay
called the “Ice to NormalTransition time”. During this inhibit, the Evaporator water flow request shall be commanded
on. After the delay, the chiller can restart again per the differential to start and the normal Chilled Water Setpoint
(or Hot Water Setpoint – if in Heating Mode).The IceTo NormalTransition inhibit shall be annunciated as a Chiller
Submode and a countdown timer showing the remaining time left shall be displayed.
Ice Making Configuration:
Ice Making is configured throughTU, and there shall be two installation options:
1. Not Installed
2. Installed with Hardware
Ice Making: Not Installed
If the Ice Building Configuration item is set to ‘Not Installed’, the application will not build the Ice Making objects, and
will require none of the Ice Making specific LLIDS.
Ice Making: Installed with Hardware
If the Ice Making Configuration item is set to ‘Installed’, the application will require the following LLIDs:
• External Ice Making Input (Dual Low Voltage Binary Input)
Ice Making Setpoints:
After Ice Making is configured, there shall be three Ice Making Settings or Setpoints:
1. Ice Making Command
2. Ice Making Enable/Disable
3. Ice MakingTermination Setpoint
The ice making setpoints can all be manipulated throughTU. Some of the Setpoints can be manipulated with User
Interface on the Display, the External Hardware Interface BAS (if a BAS is installed).
The setpoints associated with ice making are explained in more detail below.

RLC-SVU007E-GB
10
4 UNT-PRC002-GB
Technical Data
FWD 08 12 20 30 45
Power supply (V/Ph/Hz) 230/1/50
Capacities
Cooling capacity on water (1) (kW) 5,2 8,3 15 18,8 30,1
Heating capacity on water (2) (kW) 6,3 11,9 18,9 20,9 38,2
Fan motor (type) 2 x direct drive centrifugal
Fan power input (3) (kW) 0,23 0,46 0,65 1,04 1,51
Current amps (3) (A) 1,1 2,2 3,1 4,7 5,5
Start-up amps (A) 3,2 5,5 9,3 14,1 16,5
Air flow
minimum (m3/h) 490 980 1400 1800 2700
nominal (m3/h) 820 1650 2300 3000 4500
maximum (m3/h) 980 1970 2600 3600 5400
Main coil
Water entering/leaving connections (type) ISO R7 rotating female
(Dia) 3/4" 3/4" 1 1/2" 1 1/2" 1 1/2"
Electric heater (accessory for blower only)
Electric power supply (V/Ph/Hz) 230/1/50 230/1/50 or 400/3/50 400/3/50 400/3/50 400/3/50
Heating capacity (kW) 2/4 8 10 12 12
Hot water coil (accessory for blower only)
Heating capacity (4) (kW) 6,3 12 17,4 22,4 34,5
G2 filter (filter box accessory)
Quantity 2 2 2 2 2
Dimensions ( LxWxth) (mm) 386x221x8 486x271x8 586x321x8 586*421*8 586*621*8
G4 filter (filter box accessory)
Quantity - 2 2 2 2
Dimensions ( LxWxth) (mm) - 486x264x48 586x314x48 586*414*48 586*614*48
Condensate pump (accessory) (type) Centrifugal
Water flow - lift height (l/h - mm) 24 - 500
Not available for FWD30 and FWD45
Sound level (L/M/H speed)
Sound pressure level (5) (dB(A)) 36/40/43 38/41/44 46/50/53 47/52/57 47/52/58
Sound power level (5) (dB(A)) 46/50/53 48/51/54 56/60/63 57/62/67 57/62/68
Unit dimensions
Width x Depth (mm) 890 x 600 1090 x 710 1290 x 820 1290 x 970 1290 x 1090
Height (mm) 250 300 350 450 650
Shipped unit dimensions
Width x Depth (mm) 933 x 644 1133 x 754 1333 x 864 1333 x 1008 1333*1133
Height (mm) 260 310 360 460 660
Weight (kg) 32 46 61 76 118
Colour galvanised steel
Recommended fuse size
Unit alone (aM/gI) (A) 8/16 8/16 8/16 8/25 8/25
Unit with electric heater (gI) (A) 16 (2kW),25 (4kW) 40 (230V),3*16 (400V) 3*20 3*25 3*25
(1) Conditions: Water entering/leaving temperature: 7/12 °C, Air inlet temperature 27/19°C DB/WB - Nominal air flow
(2) Conditions: Water entering/leaving temperature: 50/45 °C, Air inlet temperature 20°C DB - Nominal air flow
(3) At high speed with nominal air flow.
(4) Water entering/leaving temperature 90/70 °C, air inlet temperature 20 °C DB, Nominal air flow.
(5) A rectangular glass wool duct 1m50 long is placed on the blower.The measurement is taken in the room containing the blower unit.
Heat exchanger operating limits:
FWD:
*water temperature: max 100° C
*absolute service pressure: min 1 bar/max 11 bars
Accessories - Hot water coil:
*water temperature: min. +2° C/max. 100° C
*absolute service pressure: min 1 bar/max 11 bars
Ice Making (Optional)
Ice Making Command
This is the command to enter ice making.This setting is defined as an Auto/On settings. Setting this to On will
command the application into ice building if ice building is enabled and the Chiller is in the “Auto” command mode.
Setting the Ice Making command to Auto will command the application to follow the next priority functional mode.
Regardless of the setting of the Setpoint Source (see setpoint arbitration.doc) any of the following 4 signals can
combine to comprise the Ice Building Command (assuming they are each installed).
Contact closure input for External Ice Making Command Front Panel Ice Making Command (also writable fromTU
Lontalk Communicated Ice Making Command (LCI-C, BACnet, Modbus)
Time of Day scheduler
All ice making signals have to be turned to “auto” to be able to turn back Ice Making Command to “Auto” mode.
The overall Ice Making Command, must be toggled from “Ice Making”, to “Auto” to “Ice Making” again, before Ice
Making can be entered a second time.
Ice Making Enable/Disable setting
This setting does not start or stop ice building.This is the command to enable or disable the entire ice building
feature. It can only be set through the Display orTU.The Ice Making Command starts and stops ice building.
Ice Making Termination setpoint
This setpoint controls when Ice Making is complete. If the Entering Water Temperature decreases below this setpoint
with no deadband Ice Making will be deemed complete. This setpoint has a range of –6.7°C (20°F) to 0°C (32°F) with
a default of -2.8°C (27°F).
Evaporator Application defines controls settings: if ICE is selected, Ice making is enabled. Specific hardware is
required for ice making command input and ice making status relay output.
UC800 provides auxiliary control thanks to Ice Making Status Relay.The normally open contact will be closed when
ice making is in progress and open when ice making has been normally terminated either through IceTermination
setpoint being reached or removal of the Ice Making command.This relay inform customer equipment with chiller
mode changes from “ice making” to “ice complete”.
When contact is provided, the chiller will run normally when the contact is open.
UC800 will accept either an isolated contact closure (External Ice Making command) or a Remote Communicated
input (Tracer) to initiate and command the Ice Making mode.
UC800 also provides a “Front Panel IceTermination Setpoint”, settable throughTracer™TU, and adjustable from 20 to
31°F (-6.7 to -0.5°C) in at least 1°F (1°C) increments.
Note:
When the unit runs in Ice Making mode, and the evaporator entering water temperature drops below the ice
termination setpoint, the chiller terminates the Ice Making mode and changes to the Ice Making Complete Mode.
NOTICE:
Equipment Damage!
Freeze inhibitor must be adequate for leaving water temperature unless system components can be damaged.
Tracer™TU must also be used to enable or disable Ice Machine Control. This setting does not prevent theTracer from
commanding Ice Making mode. Upon contact closure, the UC800 will initiate an ice making mode, in which the unit
runs fully loaded at all times. Ice making shall be terminated either by opening the contact or based on the entering
evaporator water temperature. UC800 will not permit the ice making mode to be entered again until the unit has
been switched out of ice making mode.
If, while in ice making mode, the unit gets down to the freeze stat setting (water or refrigerant), the unit will shut
down on a manually resettable diagnostic, just as in normal operation.
Connect leads to the proper terminals. Refer to the field diagrams which are shipped with the unit.This customer
supplied contacts must be compatible with 24 VDC, 12 mA resistive load.

RLC-SVU007E-GB 11
11UNT-PRC002-GB
Sound power levels
Discharge
Measurement conditions:
Measurements taken in a room adjacent to the room containing the FWD, at the outlet of the rectangular duct (1.5 m
long) fixed to its discharge opening.
Fan Power level in dB(A), per Hz frequency band Overall power
Unit speed 125 250 500 1000 2000 4000 8000 dB(A)
1 55 50 42 37 37 31 30 46
FWD 08 2 57 54 47 40 30 38 40 50
3 58 57 50 42 32 40 43 53
1 57 51 45 42 34 33 28 48
FWD 10 2 58 54 48 45 38 39 35 51
3 60 58 50 48 40 42 39 54
1 57 51 45 42 34 33 28 48
FWD 12 2 58 54 48 45 38 39 35 51
3 60 58 50 48 40 42 39 54
1 56 62 50 48 39 38 36 56
FWD 14 2 61 66 55 53 47 46 45 60
3 63 69 58 56 50 50 49 63
1 57 63 51 49 40 39 37 57
FWD 20 2 61 66 55 53 47 46 45 60
3 63 69 58 56 50 50 49 63
Intake
Measurement conditions:
Measurements taken at the horizontal air intake.
Fan Power level in dB(A), per Hz frequency band Overall power
Unit speed 125 250 500 1000 2000 4000 8000 dB(A)
1 56 55 55 53 46 45 42 57
FWD 08 2 63 62 60 60 53 53 53 64
3 66 65 63 62 56 55 57 67
1 62 58 55 58 51 48 44 61
FWD 10 2 66 63 60 62 56 55 52 66
3 70 67 63 65 59 59 57 69
1 62 58 55 58 51 48 44 61
FWD 12 2 66 63 60 62 56 55 52 66
3 70 67 63 65 59 59 57 69
1 66 65 65 65 57 50 46 68
FWD 14 2 73 72 69 71 64 59 57 74
3 78 76 73 75 69 64 63 78
1 68 72 64 64 56 52 50 69
FWD 20 2 76 76 68 71 65 61 61 75
3 78 79 71 74 69 66 66 78
External setpoints & capacity outputs (Optional)
External Chilled Water Setpoint (ECWS)
The UC800 provides inputs that accept either 4-20 mA or 2-10 VDC signals to set the external chilled water setpoint
(ECWS).This is not a reset function.The input defines the setpoint. This input is primarily used with generic BAS
(building automation systems).
Functional Description
When the unit is in cooling mode, the external water setpoint (EWS) will correspond to the chilled water setpoint.
The external chilled water setpoint shall have a configurable minimum and maximum.
2-10 VDC and 4-20 mA shall each correspond to an EWS range with a configurable minimum and maximum EWS.
The following relationships exist:
Input Signal External Water Setpoint
< 1 VDC Invalid
1 VDC to 2 VDC min
2 VDC to 10 VDC min + (max – min) *
(Signal – 2) / 8
10 VDC to 11 VDC max
> 11 VDC Invalid
< 2 mA Invalid
2 mA to 4 mA min
4 mA to 20 mA min + (max – min) *
(Signal – 4) / 16
20 mA to 22 mA max
> 22 mA Invalid
If the ECWS input develops an open or short, the LLID will report either a very high or very low value back to the
main processor.This will generate an informational diagnostic and the unit will default to using the Front Panel (TD7)
Chilled Water Setpoint.
TracerTU ServiceTool is used to set the input signal type from the factory default of 2-10 VDC to that of 4-20 mA.
TracerTU is also used to install or remove, enable or disable the External Chilled Water Setpoint.
Examples
The following graphs are examples for min = -12.2°C and max = 18.3°C:

RLC-SVU007E-GB
12
4 UNT-PRC002-GB
Technical Data
FWD 08 12 20 30 45
Power supply (V/Ph/Hz) 230/1/50
Capacities
Cooling capacity on water (1) (kW) 5,2 8,3 15 18,8 30,1
Heating capacity on water (2) (kW) 6,3 11,9 18,9 20,9 38,2
Fan motor (type) 2 x direct drive centrifugal
Fan power input (3) (kW) 0,23 0,46 0,65 1,04 1,51
Current amps (3) (A) 1,1 2,2 3,1 4,7 5,5
Start-up amps (A) 3,2 5,5 9,3 14,1 16,5
Air flow
minimum (m3/h) 490 980 1400 1800 2700
nominal (m3/h) 820 1650 2300 3000 4500
maximum (m3/h) 980 1970 2600 3600 5400
Main coil
Water entering/leaving connections (type) ISO R7 rotating female
(Dia) 3/4" 3/4" 1 1/2" 1 1/2" 1 1/2"
Electric heater (accessory for blower only)
Electric power supply (V/Ph/Hz) 230/1/50 230/1/50 or 400/3/50 400/3/50 400/3/50 400/3/50
Heating capacity (kW) 2/4 8 10 12 12
Hot water coil (accessory for blower only)
Heating capacity (4) (kW) 6,3 12 17,4 22,4 34,5
G2 filter (filter box accessory)
Quantity 2 2 2 2 2
Dimensions ( LxWxth) (mm) 386x221x8 486x271x8 586x321x8 586*421*8 586*621*8
G4 filter (filter box accessory)
Quantity - 2 2 2 2
Dimensions ( LxWxth) (mm) - 486x264x48 586x314x48 586*414*48 586*614*48
Condensate pump (accessory) (type) Centrifugal
Water flow - lift height (l/h - mm) 24 - 500
Not available for FWD30 and FWD45
Sound level (L/M/H speed)
Sound pressure level (5) (dB(A)) 36/40/43 38/41/44 46/50/53 47/52/57 47/52/58
Sound power level (5) (dB(A)) 46/50/53 48/51/54 56/60/63 57/62/67 57/62/68
Unit dimensions
Width x Depth (mm) 890 x 600 1090 x 710 1290 x 820 1290 x 970 1290 x 1090
Height (mm) 250 300 350 450 650
Shipped unit dimensions
Width x Depth (mm) 933 x 644 1133 x 754 1333 x 864 1333 x 1008 1333*1133
Height (mm) 260 310 360 460 660
Weight (kg) 32 46 61 76 118
Colour galvanised steel
Recommended fuse size
Unit alone (aM/gI) (A) 8/16 8/16 8/16 8/25 8/25
Unit with electric heater (gI) (A) 16 (2kW),25 (4kW) 40 (230V),3*16 (400V) 3*20 3*25 3*25
(1) Conditions: Water entering/leaving temperature: 7/12 °C, Air inlet temperature 27/19°C DB/WB - Nominal air flow
(2) Conditions: Water entering/leaving temperature: 50/45 °C, Air inlet temperature 20°C DB - Nominal air flow
(3) At high speed with nominal air flow.
(4) Water entering/leaving temperature 90/70 °C, air inlet temperature 20 °C DB, Nominal air flow.
(5) A rectangular glass wool duct 1m50 long is placed on the blower.The measurement is taken in the room containing the blower unit.
Heat exchanger operating limits:
FWD:
*water temperature: max 100° C
*absolute service pressure: min 1 bar/max 11 bars
Accessories - Hot water coil:
*water temperature: min. +2° C/max. 100° C
*absolute service pressure: min 1 bar/max 11 bars
External setpoints & capacity outputs (Optional)
External Current Limit Setpoint (ECLS)
Like previously, either 2-10 VDC (default) or 4-20 mA inputs are available as option to set External Current Limit
Setpoint.The Demand Limit Setting can also be set via theTracerTD7 or through digital communication withTracer
(Comm4).The arbitration of the various sources of demand limit is described in the flow charts at the end of this
section.The External Current Limit Setpoint may be changed from a remote location by hooking up the analog input
signal to the 1A19 LLID terminals 5 and 6. Refer to the following paragraph on Analog Input Signal Wiring Details.
Functional Description
The UCM shall accept either a 2-10 VDC or 4-20 mA analog input suitable for customer connection to set the unit
external current limit set point (ECLS).
2-10 VDC and 4-20 mA shall each correspond to a 60 to 120% RLA range for units using GP2 compressors and 50% to
100% for units using CHHC compressors.The following equations exist.
Voltage Signal
As generated from Vdc=0.133*(%)-0.6
external source
As processed by UCM %=7.5*(VDC)+45.0
Current Signal
As generated from mA=0.266*(%)-12.0
external source
As processed by UCM %=3.75*(mA)+45.0
If the EDLS input develops an open or short, the LLID will report either a very high or very low value back to the
main processor.This will generate an informational diagnostic and the unit will default to using the Front Panel
(TracerTD7) Demand Limit Setpoint.
TheTracer™TU ServiceTool must be used to set the input signal type from the factory default of 2-10 VDC to that of
4-20 mA current.TracerTU must be also be used to install or remove the External Current Limit Setpoint Option for
field installation, or can be used to enable or disable the feature (if installed).
Current limit Setpoint via 2-10 VDC signal
Current limit Setpoint via 4-20 mA signal

RLC-SVU007E-GB 13
11UNT-PRC002-GB
Sound power levels
Discharge
Measurement conditions:
Measurements taken in a room adjacent to the room containing the FWD, at the outlet of the rectangular duct (1.5 m
long) fixed to its discharge opening.
Fan Power level in dB(A), per Hz frequency band Overall power
Unit speed 125 250 500 1000 2000 4000 8000 dB(A)
1 55 50 42 37 37 31 30 46
FWD 08 2 57 54 47 40 30 38 40 50
3 58 57 50 42 32 40 43 53
1 57 51 45 42 34 33 28 48
FWD 10 2 58 54 48 45 38 39 35 51
3 60 58 50 48 40 42 39 54
1 57 51 45 42 34 33 28 48
FWD 12 2 58 54 48 45 38 39 35 51
3 60 58 50 48 40 42 39 54
1 56 62 50 48 39 38 36 56
FWD 14 2 61 66 55 53 47 46 45 60
3 63 69 58 56 50 50 49 63
1 57 63 51 49 40 39 37 57
FWD 20 2 61 66 55 53 47 46 45 60
3 63 69 58 56 50 50 49 63
Intake
Measurement conditions:
Measurements taken at the horizontal air intake.
Fan Power level in dB(A), per Hz frequency band Overall power
Unit speed 125 250 500 1000 2000 4000 8000 dB(A)
1 56 55 55 53 46 45 42 57
FWD 08 2 63 62 60 60 53 53 53 64
3 66 65 63 62 56 55 57 67
1 62 58 55 58 51 48 44 61
FWD 10 2 66 63 60 62 56 55 52 66
3 70 67 63 65 59 59 57 69
1 62 58 55 58 51 48 44 61
FWD 12 2 66 63 60 62 56 55 52 66
3 70 67 63 65 59 59 57 69
1 66 65 65 65 57 50 46 68
FWD 14 2 73 72 69 71 64 59 57 74
3 78 76 73 75 69 64 63 78
1 68 72 64 64 56 52 50 69
FWD 20 2 76 76 68 71 65 61 61 75
3 78 79 71 74 69 66 66 78
External setpoints & capacity outputs (Optional)
ECWS and ECLS Analog Input Signal Wiring Details
Both the ECWS and ECLS can be connected and setup as either a 2-10 VDC (factory default), 4-20 mA, or resistance
input (also a form of 4-2OmA) as indicated below.Tracer TU must be used to set Analog Input Signal LLID type.
This is done by a setting change on the CustomTab of the Configuration View withinTracerTU.
Priority
When Not Installed, external chilled water setpoint analog input, external demand limit setpoint analog input and
auxiliary binary input setpoint enable will not be used (Front panel or BAS sources used, depending which one is
valid).
Setpoint Source selections are: BAS/Ext/FP, Ext/FP, or Front Panel.
When Installed, both analog I/O and binary will be used, with respect of following status:
• External chilled water setpoint: IF it is the highest priority and it is a valid sourceTHEN use this external setpoint
for active chilled water setpoint.
• External demand limit setpoint: IF it is the highest priority and it is a valid sourceTHEN use this external
setpoint for active demand limit setpoint.
• External auxiliary chilled water setpoint enable input: IF setpoint source is set to external/Front Panel or Front
PanelTHEN:
− IF input open, use the next highest priority setpoint source (see priority list below)
− IF input closed, use the auxiliary chilled water setpoint
Note on auxiliary chilled water setpoint source:
• Not Installed: auxiliary chilled water setpoint not used
• Front Panel: front panel auxiliary chilled water setpoint used instead of front panel chilled water setpoint
• External: the setpoint used will depend on binary input state.
Priority (from highest to lowest):
• BAS communication (Bacnet, Lonworks or Modbus)
• Ice Making
• External setpoints
• Front Panel setpoints
Important:
For proper unit operation, BOTH the ECLS and ECWS settings MUST be the same (2-10 VDC or 4-20mA), even if only
one input is to be used.

RLC-SVU007E-GB
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4 UNT-PRC002-GB
Technical Data
FWD 08 12 20 30 45
Power supply (V/Ph/Hz) 230/1/50
Capacities
Cooling capacity on water (1) (kW) 5,2 8,3 15 18,8 30,1
Heating capacity on water (2) (kW) 6,3 11,9 18,9 20,9 38,2
Fan motor (type) 2 x direct drive centrifugal
Fan power input (3) (kW) 0,23 0,46 0,65 1,04 1,51
Current amps (3) (A) 1,1 2,2 3,1 4,7 5,5
Start-up amps (A) 3,2 5,5 9,3 14,1 16,5
Air flow
minimum (m3/h) 490 980 1400 1800 2700
nominal (m3/h) 820 1650 2300 3000 4500
maximum (m3/h) 980 1970 2600 3600 5400
Main coil
Water entering/leaving connections (type) ISO R7 rotating female
(Dia) 3/4" 3/4" 1 1/2" 1 1/2" 1 1/2"
Electric heater (accessory for blower only)
Electric power supply (V/Ph/Hz) 230/1/50 230/1/50 or 400/3/50 400/3/50 400/3/50 400/3/50
Heating capacity (kW) 2/4 8 10 12 12
Hot water coil (accessory for blower only)
Heating capacity (4) (kW) 6,3 12 17,4 22,4 34,5
G2 filter (filter box accessory)
Quantity 2 2 2 2 2
Dimensions ( LxWxth) (mm) 386x221x8 486x271x8 586x321x8 586*421*8 586*621*8
G4 filter (filter box accessory)
Quantity - 2 2 2 2
Dimensions ( LxWxth) (mm) - 486x264x48 586x314x48 586*414*48 586*614*48
Condensate pump (accessory) (type) Centrifugal
Water flow - lift height (l/h - mm) 24 - 500
Not available for FWD30 and FWD45
Sound level (L/M/H speed)
Sound pressure level (5) (dB(A)) 36/40/43 38/41/44 46/50/53 47/52/57 47/52/58
Sound power level (5) (dB(A)) 46/50/53 48/51/54 56/60/63 57/62/67 57/62/68
Unit dimensions
Width x Depth (mm) 890 x 600 1090 x 710 1290 x 820 1290 x 970 1290 x 1090
Height (mm) 250 300 350 450 650
Shipped unit dimensions
Width x Depth (mm) 933 x 644 1133 x 754 1333 x 864 1333 x 1008 1333*1133
Height (mm) 260 310 360 460 660
Weight (kg) 32 46 61 76 118
Colour galvanised steel
Recommended fuse size
Unit alone (aM/gI) (A) 8/16 8/16 8/16 8/25 8/25
Unit with electric heater (gI) (A) 16 (2kW),25 (4kW) 40 (230V),3*16 (400V) 3*20 3*25 3*25
(1) Conditions: Water entering/leaving temperature: 7/12 °C, Air inlet temperature 27/19°C DB/WB - Nominal air flow
(2) Conditions: Water entering/leaving temperature: 50/45 °C, Air inlet temperature 20°C DB - Nominal air flow
(3) At high speed with nominal air flow.
(4) Water entering/leaving temperature 90/70 °C, air inlet temperature 20 °C DB, Nominal air flow.
(5) A rectangular glass wool duct 1m50 long is placed on the blower.The measurement is taken in the room containing the blower unit.
Heat exchanger operating limits:
FWD:
*water temperature: max 100° C
*absolute service pressure: min 1 bar/max 11 bars
Accessories - Hot water coil:
*water temperature: min. +2° C/max. 100° C
*absolute service pressure: min 1 bar/max 11 bars
Chilled Water Reset (CWR)
Functional Description
The UC800 shall reset the chilled water temperature setpoint based on return water temperature or outdoor air
temperature.The Return Reset and Outdoor Reset functions are standard.
The chilled water reset settings are as follows:
1. ResetType – The following options are selectable: No Chilled Water Reset, Outdoor AirTemperature Reset, Return
WaterTemperature Reset, or Constant Return WaterTemperature Reset.
2. Reset Ratio – For Outdoor AirTemperature Reset, both positive and negative reset ratios will be allowed.
3. Start Reset
4. Maximum Reset –The maximum resets shall be with respect to the chilled water setpoint.
All parameters shall be factory set to a pre determined set of values. Field adjustment of two, three and four above
is expected to be very infrequent. Pre determined factory settings shall be set for all ResetTypes.
Variable definitions:
CWS – Arbitrated chilled water setpoint, before any reset has occurred
CWS’ – Active chilled water setpoint, includes the effect of chilled water reset
CWR – Amount of chilled water reset (also called Degrees of Reset).
The above quantities are related by the equation:
CWS’ = CWS + CWR
or
CWR = CWS’ – CWS
With the chiller running and any type of chilled water reset enabled, CWR is allowed to change at a maximum rate of
-17.2°C every 5 minutes until the actual CWR equals the desired CWR. When the chiller is not running, actual CWR
shall be set equal to the desired CWR within one minute (no maximum rate is in effect).
If Chilled Water Reset is disabled, desired CWR is 0.
Additional variable definitions:
RESET RATIO – User adjustable gain
START RESET – User adjustable reference
TOD – Outdoor air temperature
TWE – Evaporator entering water temperature
TWL – Evaporator leaving water temperature
MAXIMUM RESET – User adjustable limit providing the maximum amount of reset.
The equations for each type of reset:
Outdoor Air Temperature Reset
CWR = RESET RATIO * (START RESET –TOD)
With limits:
CWR > 0
CWR < Maximum Reset
Return Water Temperature Reset
CWR = RESET RATIO * (START RESET – (TWE –TWL))
With limits:
CWR > 0
CWR < Maximum Reset
Constant Return Water Temperature Reset
CWR = 100% * (Design Delta Temperature – (TWE –TWL))
With limits:
CWR > 0
CWR < Design DeltaTemperature

RLC-SVU007E-GB 15
11UNT-PRC002-GB
Sound power levels
Discharge
Measurement conditions:
Measurements taken in a room adjacent to the room containing the FWD, at the outlet of the rectangular duct (1.5 m
long) fixed to its discharge opening.
Fan Power level in dB(A), per Hz frequency band Overall power
Unit speed 125 250 500 1000 2000 4000 8000 dB(A)
1 55 50 42 37 37 31 30 46
FWD 08 2 57 54 47 40 30 38 40 50
3 58 57 50 42 32 40 43 53
1 57 51 45 42 34 33 28 48
FWD 10 2 58 54 48 45 38 39 35 51
3 60 58 50 48 40 42 39 54
1 57 51 45 42 34 33 28 48
FWD 12 2 58 54 48 45 38 39 35 51
3 60 58 50 48 40 42 39 54
1 56 62 50 48 39 38 36 56
FWD 14 2 61 66 55 53 47 46 45 60
3 63 69 58 56 50 50 49 63
1 57 63 51 49 40 39 37 57
FWD 20 2 61 66 55 53 47 46 45 60
3 63 69 58 56 50 50 49 63
Intake
Measurement conditions:
Measurements taken at the horizontal air intake.
Fan Power level in dB(A), per Hz frequency band Overall power
Unit speed 125 250 500 1000 2000 4000 8000 dB(A)
1 56 55 55 53 46 45 42 57
FWD 08 2 63 62 60 60 53 53 53 64
3 66 65 63 62 56 55 57 67
1 62 58 55 58 51 48 44 61
FWD 10 2 66 63 60 62 56 55 52 66
3 70 67 63 65 59 59 57 69
1 62 58 55 58 51 48 44 61
FWD 12 2 66 63 60 62 56 55 52 66
3 70 67 63 65 59 59 57 69
1 66 65 65 65 57 50 46 68
FWD 14 2 73 72 69 71 64 59 57 74
3 78 76 73 75 69 64 63 78
1 68 72 64 64 56 52 50 69
FWD 20 2 76 76 68 71 65 61 61 75
3 78 79 71 74 69 66 66 78
Chilled Water Reset (CWR)
Using the Equations for calculating CWR
Notes for doing calculations:
Equation used to get Degrees of Reset:
Outdoor Air:
Degrees of Reset = Reset Ratio * (Start Reset -TOD)
Return Reset:
Degrees of Reset = Reset Ratio * (Start Reset - (TWE -TWL))
Const Return:
Degrees of Reset = 100% * (Design DeltaTemp - (TWE -TWL))
To obtain Active CWS from Degrees of Reset:
Active CWS = Degrees of Reset + Arbitrated CWS
Note: Arbitrated CWS can either be Front Panel, BAS, or External
Reset Ratio calculation:
The Reset Ratio on the User Interface is displayed as a percentage. To use it in the above equation it must be
converted to its decimal form.
Reset Ratio percent / 100 = Reset Ratio decimal
Example of converting Reset Ratio:
If the Reset Ratio displayed on the User Interface is 50% then use (50/100) = .5 in the equation
TOD = Outdoor Air Temp
TWE = Evap Entering Water Temp
TWL = Evap Leaving WaterTemp
The following graph shows the reset function for Outdoor AirTemp:
Note:This graph assumes that Maximum Reset is set to 11.11 °C
Example of Calculating Reset for Outdoor AirTemp:
If:
Reset Ratio = 35%
Start Reset =26.67 °C
TOD = 18.33 °C
Maximum Reset = 5.83 °C
How many Degrees of Reset will there be?
Degrees of Reset = Reset Ratio*(Start Reset -TOD)
Degrees of Reset = .35*(26.67-18.33)
Degrees of Reset = 2.92

RLC-SVU007E-GB
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4 UNT-PRC002-GB
Technical Data
FWD 08 12 20 30 45
Power supply (V/Ph/Hz) 230/1/50
Capacities
Cooling capacity on water (1) (kW) 5,2 8,3 15 18,8 30,1
Heating capacity on water (2) (kW) 6,3 11,9 18,9 20,9 38,2
Fan motor (type) 2 x direct drive centrifugal
Fan power input (3) (kW) 0,23 0,46 0,65 1,04 1,51
Current amps (3) (A) 1,1 2,2 3,1 4,7 5,5
Start-up amps (A) 3,2 5,5 9,3 14,1 16,5
Air flow
minimum (m3/h) 490 980 1400 1800 2700
nominal (m3/h) 820 1650 2300 3000 4500
maximum (m3/h) 980 1970 2600 3600 5400
Main coil
Water entering/leaving connections (type) ISO R7 rotating female
(Dia) 3/4" 3/4" 1 1/2" 1 1/2" 1 1/2"
Electric heater (accessory for blower only)
Electric power supply (V/Ph/Hz) 230/1/50 230/1/50 or 400/3/50 400/3/50 400/3/50 400/3/50
Heating capacity (kW) 2/4 8 10 12 12
Hot water coil (accessory for blower only)
Heating capacity (4) (kW) 6,3 12 17,4 22,4 34,5
G2 filter (filter box accessory)
Quantity 2 2 2 2 2
Dimensions ( LxWxth) (mm) 386x221x8 486x271x8 586x321x8 586*421*8 586*621*8
G4 filter (filter box accessory)
Quantity - 2 2 2 2
Dimensions ( LxWxth) (mm) - 486x264x48 586x314x48 586*414*48 586*614*48
Condensate pump (accessory) (type) Centrifugal
Water flow - lift height (l/h - mm) 24 - 500
Not available for FWD30 and FWD45
Sound level (L/M/H speed)
Sound pressure level (5) (dB(A)) 36/40/43 38/41/44 46/50/53 47/52/57 47/52/58
Sound power level (5) (dB(A)) 46/50/53 48/51/54 56/60/63 57/62/67 57/62/68
Unit dimensions
Width x Depth (mm) 890 x 600 1090 x 710 1290 x 820 1290 x 970 1290 x 1090
Height (mm) 250 300 350 450 650
Shipped unit dimensions
Width x Depth (mm) 933 x 644 1133 x 754 1333 x 864 1333 x 1008 1333*1133
Height (mm) 260 310 360 460 660
Weight (kg) 32 46 61 76 118
Colour galvanised steel
Recommended fuse size
Unit alone (aM/gI) (A) 8/16 8/16 8/16 8/25 8/25
Unit with electric heater (gI) (A) 16 (2kW),25 (4kW) 40 (230V),3*16 (400V) 3*20 3*25 3*25
(1) Conditions: Water entering/leaving temperature: 7/12 °C, Air inlet temperature 27/19°C DB/WB - Nominal air flow
(2) Conditions: Water entering/leaving temperature: 50/45 °C, Air inlet temperature 20°C DB - Nominal air flow
(3) At high speed with nominal air flow.
(4) Water entering/leaving temperature 90/70 °C, air inlet temperature 20 °C DB, Nominal air flow.
(5) A rectangular glass wool duct 1m50 long is placed on the blower.The measurement is taken in the room containing the blower unit.
Heat exchanger operating limits:
FWD:
*water temperature: max 100° C
*absolute service pressure: min 1 bar/max 11 bars
Accessories - Hot water coil:
*water temperature: min. +2° C/max. 100° C
*absolute service pressure: min 1 bar/max 11 bars
Chilled Water Reset (CWR)
If:
Reset Ratio = -70%
Start Reset =32.22 °C
TOD =37.77°C
Maximum Reset =9.44 °C
How many Degrees of Reset will there be?
Degrees of Reset = Reset Ratio*(Start Reset -TOD)
Degrees of Reset = -.7*(32.22-37.77)
Degrees of Reset = 3.89
The following graph illustrates the reset functions of the above examples:
The following graph shows the reset function for Return Chilled Water Reset:
Note:This graph assumes Maximum Reset is set to -6.7°C.
TWE-TWL is the difference between the evaporator entering water temp and the evaporator leaving water temperature.
Using the Equation for calculating CWR for Return Water Temp
Example of Calculating Reset for Return WaterTemp:
If:
Reset Ratio = 50%
Start Reset = -6.67°C
TWE = 18.3°C
TWL = 7.22°C
Maximum Reset = 4.44°C

RLC-SVU007E-GB 17
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Sound power levels
Discharge
Measurement conditions:
Measurements taken in a room adjacent to the room containing the FWD, at the outlet of the rectangular duct (1.5 m
long) fixed to its discharge opening.
Fan Power level in dB(A), per Hz frequency band Overall power
Unit speed 125 250 500 1000 2000 4000 8000 dB(A)
1 55 50 42 37 37 31 30 46
FWD 08 2 57 54 47 40 30 38 40 50
3 58 57 50 42 32 40 43 53
1 57 51 45 42 34 33 28 48
FWD 10 2 58 54 48 45 38 39 35 51
3 60 58 50 48 40 42 39 54
1 57 51 45 42 34 33 28 48
FWD 12 2 58 54 48 45 38 39 35 51
3 60 58 50 48 40 42 39 54
1 56 62 50 48 39 38 36 56
FWD 14 2 61 66 55 53 47 46 45 60
3 63 69 58 56 50 50 49 63
1 57 63 51 49 40 39 37 57
FWD 20 2 61 66 55 53 47 46 45 60
3 63 69 58 56 50 50 49 63
Intake
Measurement conditions:
Measurements taken at the horizontal air intake.
Fan Power level in dB(A), per Hz frequency band Overall power
Unit speed 125 250 500 1000 2000 4000 8000 dB(A)
1 56 55 55 53 46 45 42 57
FWD 08 2 63 62 60 60 53 53 53 64
3 66 65 63 62 56 55 57 67
1 62 58 55 58 51 48 44 61
FWD 10 2 66 63 60 62 56 55 52 66
3 70 67 63 65 59 59 57 69
1 62 58 55 58 51 48 44 61
FWD 12 2 66 63 60 62 56 55 52 66
3 70 67 63 65 59 59 57 69
1 66 65 65 65 57 50 46 68
FWD 14 2 73 72 69 71 64 59 57 74
3 78 76 73 75 69 64 63 78
1 68 72 64 64 56 52 50 69
FWD 20 2 76 76 68 71 65 61 61 75
3 78 79 71 74 69 66 66 78
Chilled Water Reset (CWR)
How many Degrees of Reset will there be?
Degrees of Reset = Reset Ratio*(Start Reset - (TWE-TWL))
Degrees of Reset = .5*(-6.67-(18.3-7.22))
Degrees of Reset = -8.875
If:
Reset Ratio = 70%
Start Reset = -6.67°C
TWE = 15.55°C
TWL = 11.67°C
Maximum Reset = -10°C
How many Degrees of Reset will there be?
Degrees of Reset = Reset Ratio*(Start Reset - (TWE-TWL))
Degrees of Reset = .7*(-6.67-(15.55-11.67))
Degrees of Reset = -18.12
The following graph illustrates the Reset Actions of the above examples:
The following graph illustrates the Reset Action of Constant Return temperature:
Note:This graph assumes a Design DeltaTemp of -12.2°C.
Diagnostic
If any sensor measurement needed to perform the currently selected chilled water reset type is invalid due to loss of
communication or sensor failure, the desired CWR will be set to 0. The actual CWR is subject to maximum rate limits
described earlier.

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Technical Data
FWD 08 12 20 30 45
Power supply (V/Ph/Hz) 230/1/50
Capacities
Cooling capacity on water (1) (kW) 5,2 8,3 15 18,8 30,1
Heating capacity on water (2) (kW) 6,3 11,9 18,9 20,9 38,2
Fan motor (type) 2 x direct drive centrifugal
Fan power input (3) (kW) 0,23 0,46 0,65 1,04 1,51
Current amps (3) (A) 1,1 2,2 3,1 4,7 5,5
Start-up amps (A) 3,2 5,5 9,3 14,1 16,5
Air flow
minimum (m3/h) 490 980 1400 1800 2700
nominal (m3/h) 820 1650 2300 3000 4500
maximum (m3/h) 980 1970 2600 3600 5400
Main coil
Water entering/leaving connections (type) ISO R7 rotating female
(Dia) 3/4" 3/4" 1 1/2" 1 1/2" 1 1/2"
Electric heater (accessory for blower only)
Electric power supply (V/Ph/Hz) 230/1/50 230/1/50 or 400/3/50 400/3/50 400/3/50 400/3/50
Heating capacity (kW) 2/4 8 10 12 12
Hot water coil (accessory for blower only)
Heating capacity (4) (kW) 6,3 12 17,4 22,4 34,5
G2 filter (filter box accessory)
Quantity 2 2 2 2 2
Dimensions ( LxWxth) (mm) 386x221x8 486x271x8 586x321x8 586*421*8 586*621*8
G4 filter (filter box accessory)
Quantity - 2 2 2 2
Dimensions ( LxWxth) (mm) - 486x264x48 586x314x48 586*414*48 586*614*48
Condensate pump (accessory) (type) Centrifugal
Water flow - lift height (l/h - mm) 24 - 500
Not available for FWD30 and FWD45
Sound level (L/M/H speed)
Sound pressure level (5) (dB(A)) 36/40/43 38/41/44 46/50/53 47/52/57 47/52/58
Sound power level (5) (dB(A)) 46/50/53 48/51/54 56/60/63 57/62/67 57/62/68
Unit dimensions
Width x Depth (mm) 890 x 600 1090 x 710 1290 x 820 1290 x 970 1290 x 1090
Height (mm) 250 300 350 450 650
Shipped unit dimensions
Width x Depth (mm) 933 x 644 1133 x 754 1333 x 864 1333 x 1008 1333*1133
Height (mm) 260 310 360 460 660
Weight (kg) 32 46 61 76 118
Colour galvanised steel
Recommended fuse size
Unit alone (aM/gI) (A) 8/16 8/16 8/16 8/25 8/25
Unit with electric heater (gI) (A) 16 (2kW),25 (4kW) 40 (230V),3*16 (400V) 3*20 3*25 3*25
(1) Conditions: Water entering/leaving temperature: 7/12 °C, Air inlet temperature 27/19°C DB/WB - Nominal air flow
(2) Conditions: Water entering/leaving temperature: 50/45 °C, Air inlet temperature 20°C DB - Nominal air flow
(3) At high speed with nominal air flow.
(4) Water entering/leaving temperature 90/70 °C, air inlet temperature 20 °C DB, Nominal air flow.
(5) A rectangular glass wool duct 1m50 long is placed on the blower.The measurement is taken in the room containing the blower unit.
Heat exchanger operating limits:
FWD:
*water temperature: max 100° C
*absolute service pressure: min 1 bar/max 11 bars
Accessories - Hot water coil:
*water temperature: min. +2° C/max. 100° C
*absolute service pressure: min 1 bar/max 11 bars
Smart Communication Protocol
LonTalk™ Interface (LCI-C)
UC800 provides an optional LonTalk™ Smart Com Protocol (LCI-C) between the chiller and a Building Automation
System (BAS). An LCI-C LLID shall be used to provide “gateway” functionality between a LonTalk compatible device
and the Chiller.The inputs/outputs include both mandatory and optional network variables as established by the
LonMark Functional Chiller Profile 8040. See integration guide for detailed information.
BACnet Interface (BCNT)
The Building Automation and Control Network (BACnet and ANSI/ASHRAE Standard 135-2004) protocol is a standard
that allows building automation systems or components from different manufacturers to share information and
control functions. BACnet provides building owners the capability to connect various types of building control
systems or subsystems together for a variety of reasons. In addition, multiple vendors can use this protocol
to share information for monitoring and supervisory control between systems and devices in a multi-vendor
interconnected system.The BACnet interface identifies standard objects (data points) called BACnet objects. Each
object has a defined list of properties that provide information about that object. BACnet also defines a number of
standard application services that are used to access data and manipulate these objects and provides a client/server
communication between devices. See integration guide for detailed information.
BACnetTesting Laboratory (BTL) Certification
AllTracer™ UC800 controllers are designed to support BACnet Smart Com Protocol. In addition, some particular
revisions of the UC800 firmware have been tested and have achieved BTL certification by an official BACnet testing
laboratory.
For more details, refer to the BTL website at www.bacnetassociation.org.
ModBus RTU Interface
Modicon Communication Bus (Modbus) is an application layer-messaging protocol that, like BACnet, provides
client/server communication between devices over a variety of networks. During communications on a Modbus RTU
network, the protocol determines how each controller will know its device address, recognize a message addressed
to its device, determine what action to take, and extract any data or other information contained in the message.
Controllers communicate using a master/slave technique, whereby, only one device (master) can initiate transactions
(queries). Other devices (slaves) respond by supplying the requested data to the master or by taking the action
requested in the query.
The master can address individual slaves or it can initiate a broadcast message to all slaves. In turn, the slaves
respond to queries that are addressed to them individually or broadcasted.The Modbus RTU Interface establishes
the format for the master’s query by placing into it the device address, a function code defining the requested action,
any data to be sent, and an error-checking field. See integration guide for detailed information.

RLC-SVU007E-GB 19
11UNT-PRC002-GB
Sound power levels
Discharge
Measurement conditions:
Measurements taken in a room adjacent to the room containing the FWD, at the outlet of the rectangular duct (1.5 m
long) fixed to its discharge opening.
Fan Power level in dB(A), per Hz frequency band Overall power
Unit speed 125 250 500 1000 2000 4000 8000 dB(A)
1 55 50 42 37 37 31 30 46
FWD 08 2 57 54 47 40 30 38 40 50
3 58 57 50 42 32 40 43 53
1 57 51 45 42 34 33 28 48
FWD 10 2 58 54 48 45 38 39 35 51
3 60 58 50 48 40 42 39 54
1 57 51 45 42 34 33 28 48
FWD 12 2 58 54 48 45 38 39 35 51
3 60 58 50 48 40 42 39 54
1 56 62 50 48 39 38 36 56
FWD 14 2 61 66 55 53 47 46 45 60
3 63 69 58 56 50 50 49 63
1 57 63 51 49 40 39 37 57
FWD 20 2 61 66 55 53 47 46 45 60
3 63 69 58 56 50 50 49 63
Intake
Measurement conditions:
Measurements taken at the horizontal air intake.
Fan Power level in dB(A), per Hz frequency band Overall power
Unit speed 125 250 500 1000 2000 4000 8000 dB(A)
1 56 55 55 53 46 45 42 57
FWD 08 2 63 62 60 60 53 53 53 64
3 66 65 63 62 56 55 57 67
1 62 58 55 58 51 48 44 61
FWD 10 2 66 63 60 62 56 55 52 66
3 70 67 63 65 59 59 57 69
1 62 58 55 58 51 48 44 61
FWD 12 2 66 63 60 62 56 55 52 66
3 70 67 63 65 59 59 57 69
1 66 65 65 65 57 50 46 68
FWD 14 2 73 72 69 71 64 59 57 74
3 78 76 73 75 69 64 63 78
1 68 72 64 64 56 52 50 69
FWD 20 2 76 76 68 71 65 61 61 75
3 78 79 71 74 69 66 66 78
Wiring and Port Descriptions for MODBUS, BACnet and LonTalk
Figure 1 illustrates the UC800 controller ports, LEDs, rotary switches, and wiring terminals.The numbered list
following Figure 1 Wiring locations and connection ports corresponds to the numbered callouts in the illustration.
Figure 1 –
Wiring locations and connection ports of UC800 controller
1. Rotary Switches for setting BACnet®MAC address or MODBUS ID.
2. LINK for BACnet MS/TP, or MODBUS Slave (two terminals, ±). Field wired if used.
3. LINK for BACnet MS/TP, or MODBUS Slave (two terminals, ±). Field wired if used.
4. Machine bus for existing machine LLIDs (IPC3Tracer bus 19.200 baud). IPC3 Bus: used for Comm4 usingTCI or
LonTalk®using LCI-C.
5. Power (210 mA at 24 Vdc) and ground terminations (same bus as item 4). Factory wired.
6. Not used.
7. Marquee LED power and UC800 Status indicator.
8. Status LEDs for the BAS link, MBus link, and IMC link.
9. USB device type B connection for the service tool (TracerTU).
10. The Ethernet connection can only be used with theTracer AdaptiView display.
11. USB Host (not used).
Smart Com protocol
There are four connections on the UC800 that support the communication interfaces listed. Refer to Figure 2 for the
locations of each of these ports.
• BACnet MS/TP
• MODBUS Slave
• LonTalk using LCI-C (from the IPC3 bus)
Rotary Switches
There are three rotary switches on the front of the UC800 controller. Use these switches to define a three-digit
address when the UC800 is installed in a BACnet or MODBUS system (e.g., 107, 127, etc.).
Note:
Valid addresses are 001 to 127 for BACnet and 001 to 247 for MODBUS.

RLC-SVU007E-GB
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4 UNT-PRC002-GB
Technical Data
FWD 08 12 20 30 45
Power supply (V/Ph/Hz) 230/1/50
Capacities
Cooling capacity on water (1) (kW) 5,2 8,3 15 18,8 30,1
Heating capacity on water (2) (kW) 6,3 11,9 18,9 20,9 38,2
Fan motor (type) 2 x direct drive centrifugal
Fan power input (3) (kW) 0,23 0,46 0,65 1,04 1,51
Current amps (3) (A) 1,1 2,2 3,1 4,7 5,5
Start-up amps (A) 3,2 5,5 9,3 14,1 16,5
Air flow
minimum (m3/h) 490 980 1400 1800 2700
nominal (m3/h) 820 1650 2300 3000 4500
maximum (m3/h) 980 1970 2600 3600 5400
Main coil
Water entering/leaving connections (type) ISO R7 rotating female
(Dia) 3/4" 3/4" 1 1/2" 1 1/2" 1 1/2"
Electric heater (accessory for blower only)
Electric power supply (V/Ph/Hz) 230/1/50 230/1/50 or 400/3/50 400/3/50 400/3/50 400/3/50
Heating capacity (kW) 2/4 8 10 12 12
Hot water coil (accessory for blower only)
Heating capacity (4) (kW) 6,3 12 17,4 22,4 34,5
G2 filter (filter box accessory)
Quantity 2 2 2 2 2
Dimensions ( LxWxth) (mm) 386x221x8 486x271x8 586x321x8 586*421*8 586*621*8
G4 filter (filter box accessory)
Quantity - 2 2 2 2
Dimensions ( LxWxth) (mm) - 486x264x48 586x314x48 586*414*48 586*614*48
Condensate pump (accessory) (type) Centrifugal
Water flow - lift height (l/h - mm) 24 - 500
Not available for FWD30 and FWD45
Sound level (L/M/H speed)
Sound pressure level (5) (dB(A)) 36/40/43 38/41/44 46/50/53 47/52/57 47/52/58
Sound power level (5) (dB(A)) 46/50/53 48/51/54 56/60/63 57/62/67 57/62/68
Unit dimensions
Width x Depth (mm) 890 x 600 1090 x 710 1290 x 820 1290 x 970 1290 x 1090
Height (mm) 250 300 350 450 650
Shipped unit dimensions
Width x Depth (mm) 933 x 644 1133 x 754 1333 x 864 1333 x 1008 1333*1133
Height (mm) 260 310 360 460 660
Weight (kg) 32 46 61 76 118
Colour galvanised steel
Recommended fuse size
Unit alone (aM/gI) (A) 8/16 8/16 8/16 8/25 8/25
Unit with electric heater (gI) (A) 16 (2kW),25 (4kW) 40 (230V),3*16 (400V) 3*20 3*25 3*25
(1) Conditions: Water entering/leaving temperature: 7/12 °C, Air inlet temperature 27/19°C DB/WB - Nominal air flow
(2) Conditions: Water entering/leaving temperature: 50/45 °C, Air inlet temperature 20°C DB - Nominal air flow
(3) At high speed with nominal air flow.
(4) Water entering/leaving temperature 90/70 °C, air inlet temperature 20 °C DB, Nominal air flow.
(5) A rectangular glass wool duct 1m50 long is placed on the blower.The measurement is taken in the room containing the blower unit.
Heat exchanger operating limits:
FWD:
*water temperature: max 100° C
*absolute service pressure: min 1 bar/max 11 bars
Accessories - Hot water coil:
*water temperature: min. +2° C/max. 100° C
*absolute service pressure: min 1 bar/max 11 bars
Wiring and Port Descriptions for MODBUS, BACnet and LonTalk
LED Description and Operation
There are 10 LEDs on the front of the UC800. Figure 2 shows the locations of each LED andTable 5 describes their
behavior in specific instances.
Figure 2 –
LED locations
Table 5 – LED behavior
LED UC800 Status
Marquee
LED
Powered. If the Marquee LED is green solid, the UC 800 is powered and no problem exist
Low power or malfunction. If the Marquee LED is red solid, the UC800 is powered, but there are problems
present Alarm. The Marquee LED blinks Ren when an alarm exists
LINK,
MBUS, IMC
The TX LED blinks green at the data transfer rate when the UC800 transfers data to other devices on the link
The Rx LED blinks yellow at the data transfer rate when UC800 receives data from other devices on the link
Ethernet
Link
The LINK LED is solid green if the Ethernet links is connected and connecting
The ACT LED blinds yellow at the data transfer rate when data ow is active on the link
Service The Service LED is solid green when pressed.
For qualied service technicians only.
NOTICE:
Electrical Noise!
Maintain at least 6 inches between low-voltage (<30V) and high voltage circuits. Failure to do so could result in
electrical noise that could distort the signals carried by the low-voltage wiring, including IPC.