Application Data; Operating Range; Minimum Water Flow (Units Without Hydraulic Module) - United Technologies Carrier 30RQM 160 Installation, Operation And Maintenance Instructions

6 - APPLICATION DATA

6.1 - Operating range

30RQM/30RQP 160-520 units, cooling mode
Water heat exchanger
Water inlet temperature at start-up
Water outlet temperature during operation
Leaving water temperature during operation
low-temperature brine solution option
Air heat exchanger
Ambient operating temperature - 30RQM
Ambient operating temperature - 30RQM
option 28 or 30RQP
Available static pressure
Standard unit (for outdoor installation)
30RQM/30RQP 160-520 units, heating mode
Water heat exchanger
Water inlet temperature at start-up
Water outlet temperature during operation
Air heat exchanger
Outdoor ambient operating temperature
Available static pressure
Standard unit (for outdoor installation)
(1) For an application requiring start-up at less than 8°C, contact Carrier to select
a unit using the Carrier electronic catalogue.
(2) The use of antifreeze protection is required if the water outlet temperature is
below 5°C
(3) For applications requiring operation above a water outlet temperature of 20°C,
contact Carrier to select a unit using the Carrier electronic catalogue.
(4) For operation at an ambient temperature of 0°C down to -20°C (cooling mode),
the heat pump must be a 30RQM unit equipped with option 28 "Winter operation"
or a 30RQP unit.
(5) For operation at an ambient temperature of 0°C down to -10°C (heating mode),
the heat pump must be equipped with option 252 "Coil defrost heater"
(6) For operation at an ambient temperature below 0°C (cooling mode and heating
mode), the unit must either be equipped with the water heat exchanger frost
protection option (for units without hydraulic module option) or the water heat
exchanger and hydraulic module frost protection option (for units with hydraulic
module option) or the water loop must be protected against frost by the installer,
using an anti-freeze solution.
(7) The maximun ambiant temperature allowed for mahines equipped with option
231 is +40°C
(8) Operation with low temperature brine for 30RQP 180/230/270/310 only
Maximum ambient temperature: in case of 30RQM/30RQP units storage and
transport, minimum and maximum ambient temperatures to respect are -20°C and
+52°C. These temperature limits shall be considered in case of container shipment.
30RQM/30RQP 160-520 units - Cooling mode
50
40
30
20
30RQP
180/230/270/310 only
30RQP 180/230/270/310 seulement
10
0
-10
-20
-30
-10 -5 0
Evaporator water outlet temperature, °C
Minimum Maximum
°C 8 40
(1)
°C 5 (2) 20 (3)
°C -8 (8) 20 (3)
°C 0 (4)(6) 48 (7)
°C -20 (4)(6) 48 (7)
Pa 0 0
Minimum Maximum
°C 8 50
(1)
°C 20 55
°C -10 35
(5)(6)
Pa 0 0
Option 15LS Option 15LS
Option 231
Option 231
5 10 15 20
30RQM/30RQP 160-520 units - Heating mode
40
35
30
25
20
15
10
5
0
-5
-10
-15
15 20 25 30
Outlet water temperature, °C
Notes
1 Evaporator ∆T = 3K
2 The unit must be equipped with the water heat exchanger frost protection option
(for units without hydraulic module option) or the water heat exchanger and
hydraulic module frost protection option (for units with hydraulic module option)
or the water loop must be protected against frost using an anti-freeze solution
for outdoor air temperatures below 0°C
3 Operating ranges are guidelines only. The operating range must be checked
with the selection software
Legend
Operating range at full load, 30RQM unit or 30RQP unit
Extended operating range in cooling mode: 30RQM unit, option 28 "Winter
operation" down to outdoor temperatures of -20°C or 30RQP unit. The water
heat exchanger must be protected against frost (see note 2).
Operating range at part load for 30RQM/30RQP 310 unit. Other sizes operate
at full load.
Potential offloading during the de-frost cycle depending on the humidity
conditions. Refer to the manufacturer's electronic catalogue.
Low temperature brine solution option
Partial charge for low-temperature brine solution option
CAUTION: 30RQP units, option 28 and options 116V and 116W.
If the air temperature is below -10°C and the unit has been
deenergised for more than 4 hours, it is necessary to wait
two hours after the unit has been switched on again to allow
the variable drive to warm up.
6.2 - Minimum water flow (units without
hydraulic module)
The minimum water flow is shown in the table on the next page.
If the system flow is less than the unit's minimum flow, the
exchanger flow can be recirculated, as shown in the diagram.
For minimum water flow
1 Water heat exchanger
2 Recirculation
35 40 45 50 55 60
25