Haier MRV5-H - Page 225

222
Combinations
This series is cooling and heating heat recovery models. Only when the system is equipped with valve box, indoor
units under di󰀨erent valve boxes can achieve cooling and heating simultaneously. The modes of the indoors which
under the same valve box should be the same. If the indoors connected without valve box, the indoors only can
do cooling mode. Do not connect the valve box to the common multi-split system, as the former is dedicated to the
cooling & heating multi-split system.
Concerning the model of the connectible indoor unit, see the sample brochure, etc. for conrmation.
Concerning the total capacity of the indoor unit connected at the downstream of the valve box (the total selected
capacity of the models), select in Table 1 according to the quantity (refer to Table 2 for the selected capacity of the
model of each indoor unit)
Table1: Total capacity of indoor unit:
Valve box Total capacity of indoor unit kBtu/h (kW) Quantity of indoor unit
112B x≤38 (x≤11.2) Less than 5
180B 38 K < x ≤ 61 (11.2<x≤18) Less than 8
280B 61< x ≤95 (18<x≤28) Less than 8
Table 2: Capacity measure and selected capacity of the model of indoor unit
Inspection item
Capacity measure 072 092 122 162 182 242 282 302 382 482 722 962
selected capacity kBtu/h (kW)
7
(2.2)
9
(2.8)
12
(3.6)
16
(4.5)
18
(5.6)
24
(7.0)
28
(8.0)
30
(9.0)
38
(11.2)
48
(14.0)
72
(22.6)
96
(28)
Pay much attention to the following during installation. Check them again after completion.
(1) Inspection items after installation
Inspection item Defect
Inspection
column
If the installation of valve box is secure ? Falling o󰀨, vibration and noise
If gas leakage inspection is completed ? No heating/cooling
If complete insulation is achieved (refrigerant piping and tubing
connections) ?
Water leakage
If the voltage of the power supply is consistent with that on the
nameplate ?
Out of service, burnt
If there is improper wiring or piping ? Out of service, burnt
If there is construction without grounding ? Danger in electric leakage
If the thickness of the wire is as specied ? Out of service, burnt
(2) Inspection upon delivery
Inspection item Inspection column
If the electric box cover is installed
If the installation specication is transferred to the customer