Daikin ERQ User Manual download pdf (Page 9)

• Ventilation • ERQ-AW1

• Outdoor Unit • ERQ-AW1

4 Selection procedure

4 - 1 Selection Procedure

3TW27232-7

Integrated heating capacity coefficient

The heating capacity tables do not take account of the reduction in capacity, when frost has accumulated or while the defrosting operation is in progress.

The capacity values, which take these factors into account, in other words, the integrated heating capacity values, can be calculated as follows

Formula:

Integrated heating capacity = A

Value given in table of capacity characteristics = B

Integrating correction factor for frost accumulation (kW) = C

A=BxC

Correction factor for finding integrated heating capacity

ERQ-AW1

Inlet port temperature of heat exchanger (°C/RH 85%) -7 -5 -3 0357

Integrating correction factor for frost accumulation 0,96 0,93 0,87 0,81 0,83 0,89 1,0

Please note that, when there is an accumulation of snow against the outside surface of the outdoor unit heat

exchanger, there will always be a temporary redusion in capacity, although this will of course vary in degree in

accordance with a number of other factors, such as the outdoor temperature (°CDB), relative humidity (RH) and

the amount of frosting which occurs.

Note:

1. The figures shows that the integrated heating capacity

expresses the integrated capacity for a single cycle (from

defrost operation to defrost operation) in terms of time.

Defrosting operation

Time

One cycle

Heating capacity

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 38 39

Comments to this Manuals

No comments

Daikin ERQ User Manual Page 9

Comments to this Manuals

Related products and manuals for Heat pumps Daikin ERQ