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
(using TU or TD7) 0 to 30 minutes.
The non-AUTO modes, in which the pumps are stopped, includes Reset, Stop, External Stop, Remote Display Stop,
Stopped by Tracer, 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
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