Service manual

Introduction
Components
5
1
Inverter unit Fixed-speed unit Appearance
Corresponding HP
8HP 10HP 6HP 8HP 10HP
Model name MM-A0224HT MM-A0280HT MM-A0160HX MM-A0224HX MM-A0280HX
Cooling capacity (kW) 22.4 28.0 16.0 22.4 28.0
Heating capacity (kW) 25.0 31.5 18.0 25.0 31.5
Corresponding HP 8HP 10HP 14HP 16HP 18HP 20HP 22HP 24HP 26HP 28HP 30HP 32HP 34HP 36HP 38HP 40HP 42HP 44HP 46HP
Combined Model MM-A~HT 0224 0280 0384 0440 0504 0560 0608 0672 0728 0784 0840 0896 0952 1008 1064 1120 1176 1232 1288
Cooling capacity (kW) 22.4 28.0 38.4 44.8 50.4 56.0 60.8 67.2 72.8 78.4 84.0 89.6 95.2 100.8 106.4 112.0 117.6 123.2 128.8
Inverter unit 8HP 10HP 8HP 8HP 10HP 10HP 8HP 8HP 10HP 10HP 10HP 8HP 10HP 10HP 10HP 10HP 10HP 10HP 10HP
— — 6HP 8HP 8HP 10HP 8HP 8HP 8HP 10HP 10HP 8HP 8HP 10HP 10HP 10HP 8HP 10HP 10HP
— — — — — — 6HP 8HP 8HP 8HP 10HP 8HP 8HP 8HP 10HP 10HP 8HP 8HP 10HP
— — — — — — — — — — — 8HP 8HP 8HP 8HP 10HP 8HP 8HP 8HP
— — — — — — — — — — — — — — — — 8HP 8HP 8HP
13 16 16 18 18 20 22 24 26 28 30 32 34 36 38 40 40 40 40
Min. HP Connected 4 5 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Max. HP Connected 10.8 13.5 18.9 21.6 24.3 27 29.7 32.4 35.1 37.8 40.5 43.2 45.9 48.6 51.3 54 56.7 59.4 62.1
Combined
outdoor
units
No. of connectable
indoor units
Fixed-
speed unit
1. Outdoor Unit
2. Outdoor Units (Combination of Outdoor Units)
(*1). Code is determined according to the capacity code of the Indoor units connected.
(*2). If the total capacity code value of Indoor units exceeds that of Outdoor units, apply the
capacity code of Outdoor units.
(*3). When using a branch header, Indoor units with a maximum of 6.0 capacity code in total
can be connected to each branch.
NOTE: If the length of the gas pipe exceeds 30m from the 1st branching to an Indoor unit,
increase the gas pipe size by 1 size, i.e. MM-U140 = Gas Ø22.2, Liquid Ø9.5
Model name Usage Appearance
RBM-Y018 Indoor unit capacity code (*1): Total below 6.4
Y-shape branching joint
RBM-Y037 Indoor unit capacity code (*1): Total 6.4 or more and below 13.2 (*2)
RBM-Y071 Indoor unit capacity code (*1): Total 13.2 or more and below 25.2 (*2)
RBM-Y129 Indoor unit capacity code (*1): Total 25.2 or more (*2)
4-branching header (*3)
RBM-H4037 Indoor unit capacity code (*1): Total below 13.2
Max. 4
RBM-H4071 Indoor unit capacity code (*1): Total 13.2 or more and below 25.2
branches
8-branching header (*3) RBM-H8037 Indoor unit capacity code (*1): Total below 13.2
Max. 8
RBM-H8071 Indoor unit capacity code (*1): Total 13.2 or more and below 25.2
branches
1 set of 3 types of T-shape joint pipes as described below:
The required quantity is arranged and they are combined at the site.
T-shape branching joint
(For connection of RBM-T129
outdoor unit)
Connecting pipe Corresponding dia. (mm). Qty
Balancing pipe Ø9.52 1
Piping at liquid side Ø12.7 to Ø22.2 1
Piping at gas side Ø22.2 to Ø54.1 1
3. Branching joints/headers