LG Multi V ZRUM080LTE6 User Manual

Rate of Change
(object piping)
Correction factor
standard size
size increase
Capacity Class ≤ 34HP Capacity Class ≤ 60HP Capacity Class ≥ 62HP
Cooling(Gas pipe) 1 0.5 0.5 -
Heating(Liquid pipe) 1 0.2 0.4 0.4
※ Accordance with product type(operation mode), target region, model line up could be different.
Apply the correction factor after selecting that according to the unit capacity.
■ Calculation Example for overall equivalent length
* Installation condition : Model capacity = 8HP, Main pipe length = 30m, Branch pipe length = 30m, HU=0m
(Maximum pipe length and limit condition will be different by each model. Use this example only for reference.)
: Overall equivalent pipe length for Cooling = 30m x 0.5 + 30m = 45m
: Overall equivalent pipe length for Heating = 30m x 0.2 + 30m = 36m
* The rate of change in
Read the correction factor value condition on length = 45m and HU = 0 in Cooling correction factor table.
Read the correction factor value condition on length = 36m and HU = 0 in Heating correction factor table.
Defrosting Correction Factor for Heating Operation
The capacity table does not consider reduction in capacity when frost has accumulated or during defrosting.
The capacity values considered these factors, in other words the integrated heating capacity values, can be obtained as follows:
1.Fomula
■ Integrated heating capacity = A
■ Value given in table of capacity characteristics = B
■ Integrated correction factor for frost accumulation = C
■ A = B x C
2. Correction Factor for Finding Integrated Heating Capacity
Integrated Correction Factor for Frost Accumulation
Inlet Air Temperature of Heat Exchanger (°C,RH 85%)
-7 -5 -3 0 3 5 7
Normal Defrost Operation 0.92 0.90 0.86 0.84 0.85 0.90 1.0
Partial Defrost Operation 0.92 0.90 0.86 0.90 0.93 0.95 1.0
Normal Defrost Operation / Dual sensing 0.92 0.90 0.86 0.86 0.86 0.91 1.0
Partial Defrost Operation / Dual sensing 0.92 0.90 0.86 0.91 0.94 0.95 1.0
■ Normal Defrost Operation
■ Partial Defrost Operation
Please note that there will be temporary reduction in capacity when snow piles up on the outside surface of the outdoor unit heat exchanger.
Of course, it will be different in degree depending on a number of other factors, for example, the outdoor temperature(°CDB), the relative humidity(RH)
and the frosting amount.
Multi V i
8. Capacity Correction Factor
Product Data
8-4

LG Multi V ZRUM080LTE6 Specifications

General

Brand	LG
Model	Multi V ZRUM080LTE6
Category	Heat Pump
Language	English