Operating Limits - Carrier 61AF 014-7 Installation, Operation And Maintanance Instructions

61 AF

Operating limits

These units have been designed to operate within the following limits:
61AF
Plate heat Exchanger
Entering water temperature at start-up
Leaving water temperature during operation
Coil
Entering air temperature*
* Outside temperature: For transport and storage of the 61AF units the
minimum and maximum allowable temperatures are - 20°C and +50°C.
It is recommended that these temperatures are used for transport by
container
Note: Do not exceed the maximum operating temperature.
Minimum and maximum water flow rates in the
plate heat exchangers
Plate heat exchanger water flow rate
61AF
014-7
014-9
019-9
plate heat exchanger.
Note: For a domestic hot water application (leaving water temperature
Minimum water loop volume
The heat pump is used in a domestic hot water application and must
heat an intermediate loop that supplies domestic hot water via a heat
exchanger. The primary loop is charged with softened water. Regular
checks must be carried out on the water system to detect possible scale
formation. The heat pump in this type of application must never supply
domestic hot water directly. The minimum water loop volume, in litres,
is given by the following formula:
Volume (l) = CAP (kW) x N, where CAP is the nominal heating capacity
at nominal operating conditions. N=5. This volume is required to obtain
temperature stability and precision. To achieve this volume, it may be
necessary to add a storage tank to the circuit.
Operating range
Minimum Maximum
°C 8
°C 30
K 3
°C -20
Flow rate, [l/s]
Minimum Maximum*
0,2 1,1
0,2 1,1
0,3 1,6
70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70
65 65 65 65 65 65 65 65 65 65 65 65
65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65 65
60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60
55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55
50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50
45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45 45
40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40
35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35
30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30
25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25 25
20 20 20 20 20 20 20 20 20 20 20 20
-25 -25 -25 -25 -25 -25 -25 -25 -25 -25 -20 -20 -20 -20 -20 -20 -20 -20 -20 -20 -15 -15 -15 -15 -15 -15 -15 -15 -15 -15 -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 -5 -5 -5 -5 -5 -5 -5 -5 -5 -5
This tank should be equipped with baffles to allow mixing of the fluid
(water or brine). Please refer to the examples below.
57
65
10
40
achieve the required volume.
Expansion tank volume
Units with hydronic module do not incorporate an expansion tank.
This must be included in the water loop.
The table below gives the Expansion tank volume that must be
provided, based on the water loop volume, the fluid used and its
concentration.
Expansion Tank Volume required
pure water
10% ethylene glicol
20% ethylene glicol
30% ethylene glicol
40% ethylene glicol
61AF 014- 019
0 0 0 0 0 0 0 0 0 0 5 5 5 5 5 5 5 5 5 5 10 10 10 10 10 10 10 10 10 10 15 15 15 15 15 15 15 15 15 15 20 20 20 20 20 20 20 20 20 20 25 25 25 25 25 25 25 25 25 25
Outdoor Air Temperature [°C]
Bad Good
Bad Good
% of water loop volume
30 30 30 30 30 30 30 30 30 30 35 35 35 35 35 35 35 35 35 35 40 40 40 40 40 40 40 40 40 40 45 45 45 45 45 45 45 45 45 45
E N G L I S H
3
3
3,5
3,8
4,2
GB - 11