United Technologies Carrier 30RQM 160, Инструкции по установке, эксплуатации и обслуживанию

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6.3 - Maximum water flow (units without
hydraulic module)
The maximum water flow is shown in the table on the next page.
If the system's flow exceeds the unit's maximum value, it can be
bypassed as shown in the diagram.
For maximum water flow
1 Water heat exchanger
2 Bypass
6.4 - Variable flow water heat exchanger (units
without hydraulic module)
A variable water heat exchanger flow can be used in standard
heat pumps. The flow rate must be higher than the minimum flow
given in the table of permissible flow rates and must not vary by
more than 10% per minute.
If the flow rate changes more rapidly, the system should contain
a minimum of 6.5 litres of water per kW instead of 2.5 l/kW.
6.5 - System minimum water volume
Whichever the system, the water loop minimum capacity is given
by the formula: Volume = Cap (kW) x N Litres
Application N
Air conditioning – cooling 2.5
Air conditioning – heating 3.0 - 8.0
(1)
Industrial process type cooling 6.5
(1) Depending on the unit capacity - minimum water loop volume 1300 l
Where "Cap" represents the rated cooling capacity of the circuit
(kW) under the installation's rated operating conditions. This
volume is necessary for stable operation. It may be neccesary to
add a water buffer tank to the circuit to obtain the required volume.
The tank must itself be internally baffled in order to ensure proper
mixing of the liquid (water or brine). Refer to the examples below.
CAUTION: Minimum water volume to be guaranteed between
the unit and any customer valves outside of the machine.
Connection to a buffer tank
Incorrect
Incorrect
Correct
Correct
6.6 - Maximum system water volume
Units supplied with a hydraulic module may include an expansion
tank which limits the volume in the water loop (option 293).
The table below gives the maximum loop volume for pure water
or ethylene glycol depending on the system's various concentrations
and static pressures.. If the maximum volume is insufficient,
compared to the minimum system water loop volume, an additional
expansion tank vessel must be added to the system.
Maximum water loop volume (litres)
30RQM/30RQP 160-230 240-520
Static pressure (bar) 1 2 2.5 1 2 2.5
Pure water 2400 1600 1200 3960 2640 1980
10% EG 1800 1200 900 2940 1960 1470
20% EG 1320 880 660 2100 1400 1050
30% EG 1080 720 540 1740 1160 870
40% EG 900 600 450 1500 1000 750
EG: ethylene glycol
6.7 - Exchanger water flow
Data applicable for pure water.
30RQM/30RQP 160-520 units without low pressure
hydraulic module
30RQM/30RQP
Minimum flow rate
(1)
(l/s)
Maximum flow rate
(2)
(l/s)
160 2,9 17,5
180 3,1 17,5
210 3,8 17,5
230 4,1 21,8
240 4,2 29,8
270 4,8 29,8
310 5,5 35,2
330 5,8 40,4
380
6,7 40,4
430 7,8 40,4
470 8,4 41,6
520 9,2 43,4
(1) Minimum flow rate for the maximum permitted water temperature difference
conditions (10 K) at the minimum water outlet temperature value (5°C)
(2) Maximum flow rate for a pressure drop of 100 kPa in the plate heat exchanger
30RQM/30RQP 160-520 units with low pressure hydraulic
module
30RQM/30RQP
Minimum flow
rate
(1)
(l/s)
Maximum flow rate (l/s)
Single Dual
160 2,9 12,2 10,3
180 3,1 12,2 12,2
210 3,8 14,3 14,0
230 4,1 14,3 14,0
240 4,2 20,3 20,2
270 4,8 20,3 20,2
310 5,5 20,3 20,2
330 8,0 25,0 25,0
380 8,0 25,0 25,0
430 8,0 25,0 25,0
470 8,4 28,6 26,5
520 9,2 28,6 28,6
(1) Minimum flow rate for the maximum permitted water temperature difference
conditions (10 K) at the minimum water outlet temperature value (5°C)
6 - APPLICATION DATA
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