Panasonic U-16GE3E5 User manual

Test Run Manual
Gas Heat Pump
Air Conditioner
Applicable Models
2WAY MULTI/W MULTI
U-16GE3E5
U-20GE3E5
U-25GE3E5
U-30GE3E5
3WAY MULTI
U-16GF3E5
U-20GF3E5
U-25GF3E5
Reference No. GTR-1710-01B
Order No. SBPAC1612009CE

CONTENTS
I. Test run operations
1. Applicable models ........................................................................................................................I-1
2. Limitations on refrigerant tubing length ........................................................................................I-2
3. Tools and measuring equipment................................................................................................I-12
II. Test Run Work (when Connecting Indoor Unit)
SAFETY PRECAUTIONS
Stopping only the indoor unit is extremely dangerous because the engine may suddenly start if the customer
operates the remote controller on the indoor unit. When working on internal parts of the outdoor unit, make
sure to cut the power to the outdoor unit at the circuit breaker before starting work. (However, if a centralized
control device such as an intelligent controller is used, a communications error may occur.) Otherwise,
perform a “Stop” operation on the outdoor unit.
 Testrunow ....................................................................................................................................II-1
1. Checking installation work
(1) Installation work check ...............................................................................................................II-2
(2) Outdoor unit check .....................................................................................................................II-2
(3) Safety check...............................................................................................................................II-3
(4)Indoor/outdoorcontrolwireconnectionconrmation .................................................................II-3
(5) Indoor unit check......................................................................................................................II-10
2. Preparations and checks before operation
(1) Preparations for operating the outdoor unit ..............................................................................II-11
3. Setting the address
(1)Setting the indoor unit addresses automatically........................................................................II-25
(2) Setting the indoor unit address manually .................................................................................II-28
(3) Checking the indoor unit addresses.........................................................................................II-29
(4) Changing the indoor unit address (when necessary) ...............................................................II-31
(5) Flow diagram for address setting .............................................................................................II-33
4. Checking the function
(1) Changing the function setting.................................................................................................. II-34
(2) Checking the function of the outdoor unit.................................................................................II-35
(3) Checking the indoor units and remote controller......................................................................II-37
5. Checking performance
(1)Checking the basic performance of indoor and outdoor units...................................................II-47
(2) Completion of operations .........................................................................................................II-50
6. Operating instructions
(1) Daily inspection ........................................................................................................................II-51
(2) The necessity for maintenance ................................................................................................II-51
7. Self-diagnosis function table (outdoor unit)....................................................................................II-52
III. Reference Document
1. Board Switch and LED arrangement diagram............................................................................III-1
Appendix: GHP test run checklist (2WAY MULTI/W MULTI).............................................................. IV-1

I - 1
I. Test run operations
Get the customer to witness the test run.
1. Applicable models
Outdoor units
2WAY MULTI/W MULTI
Model Equivalent
horsepower Ty p e
U-16GE3E5 16 HP 45.0W
U-20GE3E5 20 HP 56.0W
U-25GE3E5 25 HP 71.0W
U-30GE3E5 30 HP 85.0W
Indoor units
Class 22 28 36 45 56 73 90 106 140 160 224 280
Capacity
Type kW 2.2/
2.5
2.8/
3.2
3.6/
4.2
4.5/
5.0
5.6/
6.3
7.3/
8.0
9.0/
10.0
10.6/
11.4
14.0/
16.0
16.0/
18.0
22.4/
25.0
28.0/
31.5
4-Way Air Discharge
Semi-Concealed ○○○○○○○○○○
4-Way Air Discharge
Semi-Concealed ○○○○○
2-Way Air Discharge
Semi-Concealed ○○○○○○
1-Way Air Discharge
Semi-Concealed Slim
Type
○○○○○
Silhouette Ducted ○○○○○○○○○○
Static Ducted ○○○○○
Ceiling-Mounted ○○○○ ○○
Wall-Mounted ○○○○○○ ○
Concealed
Floor Standing ○○○○○○
Floor Standing ○○○○○○
Concealed-Duct
High-Static Pressure ○ ○ ○ ○ ○
Water heat exchanger units
Connected water heat exchanger unit type Cooling output Heating output
S-710WX2E5 71 kW 80 kW
Note: 1. When connecting a mixture of an outdoor air processing unit with direct-expansion coil and a
Multi indoor unit, or connecting multiple units and just an outdoor air processing unit with direct-
expansion coil, the indoor/outdoor unit capacity ratio is within 130%.
2. When connecting a mixture of an outdoor air processing unit with direct-expansion coil and a
Multi indoor unit, a gas tube valve kit is required for the outdoor air processing unit with direct-
expansion coil.
Furthermore, when connecting multiple units and just an outdoor air processing unit with direct-
expansion coil, a gas tube valve kit is required for the outdoor air processing unit with direct-
expansion coil. In either case, ensure the following conditions are satised.
At that time, ensure that the total capacity when no gas tube valve kit is connected (Multi indoor
units) is within that of the combined outdoor units, and becomes 50% of the outdoor unit that has
the maximum capacity.
3WAY M U LT I
Model Equivalent
horsepower Ty p e
U-16GF3E5 16 HP 45.0W
U-20GF3E5 20 HP 56.0W
U-25GF3E5 25 HP 71.0W

I - 2
2. Limitations on refrigerant tubing length
< 2WAY Multi/W Multi Models>
(1) System tubing
Limitations on refrigerant tubing length
When T-tee branch tubing is
used (header branch method)
No. 1 branch
40 cm or less
40 cm or less
Used for
expansion
Symbols
Branch tube
(APR purchased separately)
Ball valve (purchased separately)
T-tee (provided by installer)
Closed (pinch) weld
Table 1-1 System Limitations
Outdoor unit types of the
system 45.0 56.0 71.0 85.0 45.0×2 45.0+56.0 56.0×2 45.0+71.0 56.0+71.0 71.0×2 71.0×85.0 85.0×2
Equivalent Horsepower 16 20 25 30 32 36 40 41 45 50 55 60
Ratio of capacity for indoor
unit to outdoor units
50 – 200% Min: Across the system, a minimum outdoor unit capacity of 50%
Max: Total capacity of 130% with 2 outdoor units
Minimum capacity of
indoor units that can be
connected
Type 22 or greater (equivalent to 0.8 horsepower)
Maximum number of
indoor units that can be
connected (per system)
26 33 41 50 52 59 64
Ranges for Refrigerant Tubing Length and Installation Height Difference
Category Symbol Description Tubing length (m)
Allowable tubing
length
L1 Max. allowable tubing length ≤170
(equivalent length 200)
∆L=
(L2 – L4)
Difference between longest and shortest tubing lengths after
the No. 1 branch (rst branching point) ≤70
LM Max. length for main tube (tube with widest diameter) 7≤LM≤120
ℓ1, ℓ2...ℓ48 Max. length for each tube branch ≤30
L5 Distance between outdoor units ≤7
Allowable height
difference
H1 Max. height difference between
indoor and outdoor units
If outdoor unit is above ≤50
If outdoor unit is below ≤35 (*1)
H2 Max. height difference between indoor units ≤α (*2)
H3 Max. height difference between outdoor units 1
Allowable length
for branched tubing
(header branch)
L3 Max. length between rst T-tee branch (provided by installer)
and the closed tube end ≤2
(*1) If cooling mode is expected to be used when the external temperature is 10°C or below, the maximum length is 30 m.
(*2) The max/min permissible height between indoor units (α) is found by the difference (∆L) between the maximum
length and the minimum length from the rst branch.
α=35- ∆L/2 (however, 0≤α≤15)
50 –
170%

I - 3
(2) Selecting system header and branch tubing sizes
Outdoor and indoor units are connected together by a pair of headers.
If the maximum tubing length exceeds 90 m (effective length), increase the size of the main tubing for both liquid
and gas by one size. Be careful when selecting tube sizes, as the wrong size may impair performance.
Outdoor Tubing/Main Tube Size(*1) (*2)
Outdoor tubing Main tubing
Outdoor unit (gross) capacity (kW)
45 56 71 85 90 101 112 116 127 142 156 170
Gas tube (mm) f28.58 (f31.75) f31.75 (f38.1) f38.1 f38.1 (f44.45)
Liquid tube
(mm)
f12.7
(f15.88) f15.88 (f19.05) f19.05 (f22.22) f22.22
(*1) If there are plans for future expansion, choose plumbing sizes according to the total capacity after such expan-
sion. However, if tube size is stepped up 3 levels, expansion is not possible.
(*2) If the maximum tube length exceeds 90 m (or equivalent length), use the gure in parentheses ( ) to size the
main tubing, along with those of the liquid and gas tubes.
However, size the gas tube only up to f38.1. (A reducer has to be tted on-site)
Size of main tubing after branch (*1) (*2)
When indoor unit(s) are connected Main tube after branching
Post-branching indoor unit capacity (kW)*3
– 5.6 – 16.0 – 22.4 – 28.0 – 16.0 – 28.0 – 35.5 – 45.0 – 71.0 – 101.0 – 110.5 – 221.0
Gas tube
(mm) f12.7 f15.88 f19.05 f22.22 f15.88 f22.22 (f25.4)
f25.4
(f28.58) f28.58 (f31.75) f31.75 (f38.1)
f38.1
(f44.45)
Liquid tube
(mm) f9.52 f9.52 f9.52 (f12.7) f12.7 (f15.88) f15.88 (f19.05) f19.05 (f22.22) f22.22
(*1) Select a diameter for the main tubing after a branch that is no larger than that of the header.
(In cases where the main tubing after a branch would have to be larger than the header tubing, select tubing of
the same size, and never exceed the header size.)
(*2) If the maximum tube length exceeds 90 m (or equivalent length), use the gure in parentheses ( ) to size the
main tube after branching, along with those of the liquid and gas tubes.
However, size the gas tube only up to f38.1.
(*3) “–* *” in the table above means “** kW or less”.
Branch/Header Tube Selection
Use the following branch tubing sets or tubing sets for branching the system’s main tube and indoor unit tubing.
Capacity after branch
Branch tube size (*1) Branch tube number
Gas tube (mm) Liquid tube (mm) Branch tubing
APR-P160BG APR-P680BG APR-P1350BG
Over 72.8 kW f31.75 f19.05 — — ●
Over 45.0 kW to 72.8 kW f28.58 f15.88 —● ●
Over 35.5 kW to 45.0 kW f28.58 f12.7 —● ●
Over 28.0 kW to 35.5 kW f25.4 f12.7 —● ●
Over 22.4 kW to 28.0 kW f22.22 f9.52 —● ●
Over 16.0 kW to 28.0 kW f19.05 f9.52 ●●●
Over 5.6 kW to 16.0 kW f15.88 f9.52 ● ●(*3) ●(*3)
5.6 kW or below f12.7 (*2) f9.52 ● ●(*3) ●(*3)
(*1) Make a selection so as not to exceed the main tubing size.
(*2) Even when 5.6 kW or below, make the gas tube diameter f15.88 if 2 or more indoor units are connected after
branching.
(*3) As the tube diameter for the supplied reducer does not match, another reducer must be provided by the installer.

I - 4
Selecting ball valves
Valve connection tube diameter (mm)*1
Applicable outdoor
unit
Applicable indoor unit
Total indoor unit capacity through
valve
Model Type No. Gas Liquid Balance
SGP-BV710K f31.75 f19.05 -71.0 kW Type
(over 90 m) Over 72.8 kW to 101.0 kW
SGP-BV450K f28.58 f19.05 - - Over 35.5 kW to 72.8 kW
SGP-BV355K f28.58 f15.88 - 56.0, 71.0 kW Type Over 45.0 kW to 72.8 kW
SGP-BV450M f28.58 f12.7 -45.0 kW Type Over 35.5 kW to 45.0 kW
BV-R XP335AGB f25.4 f12.7 - - Over 28.0 kW to 35.5 kW
BV-RXP280AGB f22.22 f9.52 - - Over 22.4 kW to 28.0 kW
BV-R XP224AGB f19.05 f9.52 - - Over 16.0 kW to 22.4 kW
BV-R XP160AGB f15.88 f9.52 - - Over 5.6 kW to 16.0 kW
BV-R XP56AGB f12.7 *2 f6.35 - - 5.6 kW or less
BV-R P3GB f9.52 For balance tube
Note 1. The ID of these valves is about the same as that of the connecting copper tube, so no correction for pressure
loss is necessary.
Note 2. Leakage pressure rating must be at least 4.15 MPa.
*1. Select a size that does not exceed header size.
*2. Even for 5.6 kW or less, if the indoor unit tubing branches, use 15.88 mm diameter gas tube.
(3) Selecting header tubing
[Anticipating additional indoor units]
1) Ball valve installation position: Install on main tubing after branching.
2) Installation guidelines
• Slope main tubes after branches so as to prevent oil buildup.
• Locate ball valves as close as possible to (within 40 cm) of their branch points.
• If the tube diameter at the ball valve is smaller than that of the main tube after branching, install reducers only at
the ball valve connections.
• Locate the equipment where it will be easy to operate and inspect in the future.
Caution
When installing indoor tubing (including that for future indoor expansion) along a main tube after a branch, be
sure to position service ports to face in the direction of their units (see dashed lines in the example above).

I - 5
< 3WAY Mu l t i / Mo de l s>
(1) System tubing
Limitations on refrigerant tubing length
ℓ２
ℓ１ ℓ３ ℓ４
ℓｎ
ＬＡ
ℓ
n-1
LB LC
L3
H2
H1
L1
L2
LD L4
2-tube line (gas tube, liquid tube)
Indoor unit
When T-tee branch tubing is used
(header branch method)
First branch
(Branch line)
3-tube line (discharge gas tube, suction gas tube, liquid tube)
Outdoor unit
Solenoid valve kit (purchased separately)
Externally mounted solenoid valve kit (sold separately)
Branch tube (purchased separately)
Ball valve (purchased separately)
T-tee (provided by installer)
Closed (pinch) weld
CAUTION : 1) Each indoor unit requires a solenoid valve kit.
2) Never branch the tube between a solenoid valve kit and indoor unit.
3) Never branch the tube again after the header branching.
4) If using an external electric valve kit, install it between the solenoid
valve kit and the indoor unit.
Header (purchased separately)
Difference in height of Indoor units after last branch
Height difference between indoor units after the final branch must be less than 4 m. If height difference between indoor units after the final branch cannot be less than 4 m,
divide the height difference between upper and lower units (2 to 1).
More than 4 m
X m
2X m or
more
4 m or less
Fig. 1 Length of Refrigerant Tubing

I - 6
(2) Selecting system header and branch tubing sizes
Table 1-1 System limitations
Outdoor unit 45.0 kW Type 56.0 kW Type 71.0 kW Type
Capacity proportion of the indoor units to the outdoor unit 50 - 200 %
Minimum capacity of indoor units that can be connected ≤ 22 type (equivalent to 0.8 horsepower)
Maximum number of indoor units (systems) that can be connected 24
Table 1-2 Ranges for refrigerant tubing length and installation height difference
Category Symbol Description Tubing length (m)
Allowable tubing
length
L1 Max. allowable tubing length ≤ 120 (equivalent length 145) (*1)
L2-L3
Difference between longest and shortest tubing
lengths after the No. 1 branch (rst branching
point)
≤ 30
ℓ1, ℓ2...ℓ24 Max. length for each tube branch ≤ 30
Allowable height
difference
H1
Max. height difference
between indoor and
outdoor units
If outdoor unit is above ≤ 50
If outdoor unit is below ≤ 35 (*2)
H2 Max. height difference between indoor units ≤ 15 (*3)
Allowable length
for branched tubing
(header branch)
L3 Max. length between rst T-tee branch (provided
by installer) and the closed tube end ≤ 2
(*1) The minimum length of tubes between outdoor units and indoor units is 7 m.
(*2) If cooling mode is expected to be used when the external temperature is 10°C or below, install so the maximum
length is 30 m.
(*3) Install so that the height difference between indoor units after the nal branch is within the limits shown in Fig 1.
Table 2. Main Tubing Diameter
Main Tubing Diameter
45.0 kW Type 56.0 kW Type 71.0 kW Type
Suction
Tube
Discharge
Tube
Liquid
Tube
Suction
Tube
Discharge
Tube
Liquid
Tube
Suction
Tube
Discharge
Tube
Liquid
Tube
f28.58
(f31.75) f22.22 f19.05 f28.58 (f31.75) f25.4 f19.05 f28.58 (f31.75) f25.4 Ø19.05
If the equivalent length of tubing is 90m or more or if the total capacity for connected indoor units exceeds 130% use
the suction tube size in ( ).
Table 3. Main tubing size after distriburion (D2, D3, Dn)
Outdoor
unit Outdoor tubing (mm)
Post-branch main tubing
Total capacity for connected indoor units (kW)
35.6 to 142.0 28.1 to 35.5 16.1 to 28.0 9.0 to 16.0 Under 9.0
45.0 kW
Ty p e
Suction tube f28.58
(f31.75)
f28.58
(f31.75) f28.58 f25.4 f19.05 f15.88
Discharge tube f22.22 f22.22 f22.22 f19.05 f15.88 f12.7
Liquid tube f19.05 f15.88 f15.88 f12.7 f9.52 f9.52
56.0 kW
Ty p e
Suction tube f28.58
(f31.75)
f28.58
(f31.75) f28.58 f25.4 f19.05 f15.88
Discharge tube f25.4 f25.4 f22.22 f19.05 f15.88 f12.7
Liquid tube f19.05 f19.05 f15.88 f12.7 f9.52 f9.52
71.0 kW
Ty p e
Suction tube f28.58
(f31.75)
f28.58
(f31.75) f28.58 f25.4 f19.05 f15.88
Discharge tube f25.4 f25.4 f22.22 f19.05 f15.88 f12.7
Liquid tube f19.05 f19.05 f15.88 f12.7 f9.52 f9.52
*1 If anticipating future expansion, select tube diameters according to total capacity after expansion.
*2 If the maximum tubing length exceeds 90 m (equivalent length), increase the diameter of the main tubing to the
size in ( ) for both liquid and gas tubes. However, gas tube diameter should not exceed 31.75 mm. (Reducers are
available locally.)
*3 “–* *” in the table above means “** kW or less”

I - 7
Table 4. Distribution ⇔Solenoid valve kit connection tubing (3-tube line)
Indoor unit Ty pe 22 28 36 45 56 71 80 90 112 140 160
Equivalent HP 0.8 11.3 1.6 22.5 33.2 456
Tubing dia.
Suction tube f15.88
Discharge tube f12.7
Liquid tube f9.52
Table 5. Solenoid Valve Kit ⇔Indoor unit connection tubing (2-tube line)
Indoor unit Ty pe 22 28 36 45 56 71 80 90 112 140 160
Equivalent HP 0.8 11.3 1.6 22.5 33.2 456
Tubing dia. Suction tube f12.7(*1) f12.7 f15.88
Liquid tube f6.35 f9.52
*1 The are connection method is join Solenoid Valve Kit (option) and the indoor units. Please refer to the operation
manual.
(3) Branch Tube and Ball Valve Selection
Branch tube selection
From the following branch and header tube sets, select the applicable model for branches from the system main
tube and indoor unit tubing.
Capacity after
branch (kW)
Branch tube model number
Branch tube set Header tube set
APR-RZP224BGB APR-RZP680BGB APR-RZP1350BGB SGP-HCHZ560M
45.1 – 142.0 – ▲ ● ●
35.6 – 45.0 –▲ ● ●
28.1 – 35.5 – ●●●
16.1 – 28.0 – ●●○
9.0 – 16.0 ●○○○
<9.0 ●○○○
▲ Not usable when the maximum tubing length exceeds 90m (equivalent length) or the connected indoor capacity
exceeds 130%.
○ Make arrangements locally if the tube diameters do not match.
Ball valve selection
Model No. Valve connection tube diameter*1 Applicable Outdoor
Unit
Applicable Indoor Unit
Total indoor unit capacity through valve
Suction Liquid Discharge
SGP-BV710K f31.75 f19.05 – – Over 72.8 – 101.0 kW
SGP-BV450K f28.58 f19.05 – 45.0 ~ 71.0 kW Type Over 35.5 – 72.8 kW
SGP-BV355K f28.58 f15.88 – – Over 45.0 – 72.8 kW
SGP-BV450M f28.58 f12.7 – – Over 35.5 – 45.0 kW
BV-R XP335AGB f25.4 f12.7 – – Over 28.0 – 35.5 kW
BV-RXP280AGB f22.22 f9.52 – – Over 22.4 – 28.0 kW
BV-R XP224AGB f19.05 f9.52 – – Over 16.0 – 22.4 kW
BV-R XP160AGB f15.88 f9.52 – – Over 5.6 – 16.0 kW
BU-RXP56AGB f12.7*2 f6.35 – – 5.6 kW or less
SGP-BVZ280K – – f19.05 For discharge tube
Note 1. The inside diameter of these valves is about the same as that of the connecting copper tube, so no correc-
tion for pressure loss is necessary.
Note 2. Leakage pressure rating must be at least 4.15 MPa.
*1. Select a size that does not exceed header size.
*2. Even for 5.6 kW or less, if the indoor unit tubing branches, use 15.88 mm diameter gas tube.

I - 8
[Anticipating additional indoor units]
1) Ball valve installation position: Install on main tubing after branching.
2) Installation guidelines
* Slope main tubes after branches to prevent oil buildup.
* Locate ball valves as close as possible to within 40 cm of their branch points. If the tube diameter at the ball
valve is smaller than that of the main tube after branching, install reducers only at the ball valve connections.
* Locate the equipment where it will be easy to operate and inspect in the future.
Caution
* When installing indoor tubing (including that for future indoor expansion) along a main tube after a branch,
be sure to position service ports to face in the direction of their units (see dashed lines in the example above).
* Install a service port between the branch and solenoid valve kit, and with additional solenoid valve kits when
expanding indoor units.

I - 9
Solenoid Valve Kits (sold separately)
Model Name Model No. Compatible Indoor Units
Solenoid Valve Kit CZ-P56HR2 Types 22 to 56
CZ-P160HR2 Types 71 to 160
● Wiring Procedure
Connect the 9P connector coming from the solenoid valve kit through the power inlet of the indoor unit to the 9P
connector (red) of the 3WAY PCB (sold separately). (Fig. 1)
Accessory wire length is 5 m.
In case the wire is not long enough, cut the wire halfway and connect additional wire (eld supply) as an extension
using a terminal box (eld supply) as shown in Fig. 2.
Anchor the cabtyre cable using the binding bands inside the unit.
Do not route the cabtyre cable through the same wiring conduit as the remote controller wiring or inter-unit control
wiring.
Note
You must follow your local electrical codes.
The wire should be xed with the clamp inside the indoor unit.
Do not route the wire through a tube together with the remote-control line and inter-unit operation line run.
Recommended wire size
5-core cable, 0.75 mm2or more (300 V or more)
Grounding should be done between the indoor unit and solenoid valve kit.

I - 10
Equivalent length of refrigerant piping
The following table shows the equivalent straight piping length of connectors that may be used in the piping
system.
Table 3. Equivalent straight piping length of connectors
Units (m)
Inlet pipe or thick pipe
(gas pipe) Ø9.52 Ø12.7 Ø15.88 Ø19.05 Ø22.22 Ø25.4 Ø28.58 Ø31.75 Ø38.1
90º elbow 0.15 0.3 0.35 0.42 0.48 0.52 0.57 0.7 0.79
45º elbow 0.1 0.23 0.26 0.32 0.36 0.39 0.43 0.53 0.59
T-tee 0.2 0.5 0.5 0.6 –0.8 0.9 0.9 –
Socket 0.05 0.1 0.11 0.12 –0.14 0.16 0.18 –
U bend (R60 -100mm) 0.7 0.9 1.05 1.26 1.44 1.56 1.71 2.1 2.37
Trap bend 1.8 2.3 2.8 3.2 3.8 4.3 4.7 5.0 5.8
Branch pipe 0.5
Header pipe 1
Ball valve for service Not applicable to equivalent length calculation
Table 4. Equivalent straight piping length of bent pipe
REquivalent length Calculation example
d: OD R: Bend radius R
d= 30
19 =1.57
Example:
For a 19 mm dia. Pipe bent 90º with 30 mm radius
(d=19 · R=30)
From the table,
Length = 12.2 x 19 =231 mm
The result is 0.23
d45º bend 90º bend 180º bend
0.5 25.0×d 40.0×d 53.5×d
1.0 12.0×d 18.5×d 25.8×d
1.5 7.8×d 12.2×d 16.4×d
2.0 6.4×d 10.0×d 13.4×d
2.5 5.9×d 9.2×d 12.3×d
3.0 5.7×d 9.0×d 12.0×d
3.5 5.9×d 9.2×d 12.2×d
4.0 6.4×d 10.0×d 13.4×d
4.5 7.1×d 11.0×d 14.8×d

I - 11
[Anticipating additional outdoor units]
1) Ball valve installation position: Install on main tubing after branching.
2) Installation guidelines
• Slope main tubes after branches so as to prevent oil buildup.
• Locate ball valves as close as possible to (within 40 cm) of their branch points.
• If the tube diameter at the ball valve is smaller than that of the main tube after branching, install reducers only at
the ball valve connections.
Caution
When installing outdoor tubing (including that for future indoor expansion), be sure to position the valve service
port to face in the direction of the outdoor unit (see dashed lines in the example above), and at least 50 cm from the
outdoor unit.

I - 12
3. Tools and measuring equipment
Item Specication Q’ty Notes
Tools and equipment
Driver ( + ) S, M, L ( - ) M 1 each
Monkey wrench 150mm/200mm/250mm 1 each
Spanner 1 set
Leak detection liquid Appropriate
quantity
Step ladder 1
Socket wrench 1 set
Cloth Appropriate
quantity
For wiping the leak detection
liquid
Ordinary tools 1 set
Measurement
equipment
Insulation resistance meter DC 500 V 1
Gas leak detector 1
PC for monitoring 1 unit Including connecting cable

II - 1
(1) Setting the indoor unit addresses automatically
When the indoor/outdoor control wire is not connected to several outdoor units
When the indoor/outdoor control wire is connected to several outdoor units
(2) Setting the indoor unit addresses manually
(3) Checking the indoor unit addresses
Checking the indoor unit address from the position of the main body of the indoor unit
Checking the position of the main body of the indoor unit from the address of the indoor unit
(4) Changing the indoor unit addresses (when necessary)
Changing the address of indoor unit under individual and group control
Changing the address of the indoor units for the whole system
(5)Addresssettingowdiagram
II. Test Run Work (when Connecting Indoor Unit)
Testrunow
Outdoor unit
1. Construction
checking
Indoor unit
2. Preparations and checks
before operation
3. Setting the addresses
4.
Checking the performance
5. Checking the
efciency
6.Operating
instructions
(1) Checking the construction
(2) Checking the outdoor unit
Checking the gas type
External visual check
Checking accessory items
(3) Safety check
Insulation resistance check
Fuel gas connector leakage check
(4) Checking the indoor/outdoor control wire connection
(1) Changing the performance settings
(2) Checking the outdoor unit performance
Checks before start-up of the engine
Test run mode settings
Checking engine performance
Checking for abnormal noise or vibration
(3) Necessity of maintenance
(1) Self diagnosis function table (outdoor unit)
(5) Checking the indoor units
Removexingpad
(3) Checking the indoor unit and remote controller
Start/Stop checks
Checks in operate mode
Checks of air speed switching
Checkingauto-apoperation
Checking the temperature setting
Whentheabovechecksarenished,stopall
remote controllers
(1) Remote controller switch (operation switch) opera-
tion and display
Operation
Display
(2) Daily inspection
7
(1) Preparing the outdoor unit for operation
Removing the panel
Crankcase heater 5-hour preparatory energization check
Outdoor unit main board
Checking and setting the fuel gas type
Checking and adjusting the time and date
Checking the initial values
Setting the number of indoor units connected
Set the indoor unit system address and whether there is termination resistance or not
Checking the coolant level
Opening the shutoff valve
Setting the total stop switch
(1)Checkingthebasicefciencyoftheindoorandoutdoorunits
Reading the data
Judging the data
Mode change checks
Test run stop
Requests to investigate, take action, or improve
(2) Completion of operations

II - 2
1. Checking installation work
(1) Installation work check
If there is a problem with the installation work, make a request through the sales representative that the problem be
remedied and measures be taken.
Write the necessary information in the “GHP Test Run Checklist (2WAY Multi/W Multi). (Refer to the appendix.)
(2) Outdoor unit check
Applicable Gas Type
Group P H L E
Gas composition
Standard gas
Caloric value
(MJ/m3N)
C3H8100%
G31
95.65
CH4100%
G20
37.78
CH486% N214%
G25
32.49
CH4100%
G20
37.78
Model
Name
45.0 kW Type
56.0 kW Type
71.0 kW Type
85.0 kW Type
Applicability : Standard setting when shipped from the factory
: Necessary to change the gas type setting on site
External appearance check
● Conrm visually that there is no external damage to the product caused during transport or subsequently.
● In particular, the heat exchanger fan is easily scratched, and some customers have pointed out scratches when
outdoor units were handed over. Be careful.
Accessory check
Required accessories Storage location Remarks
Instruction manual
These items are all stored in a plastic bag
which is attached to the inside of the face
panel with the display window for the
operation time.
Explain how to use the manual when you hand it
over to the customer.
Warranty Fill in the relevant items when you hand over the
warranty to the customer.
Labels
● Remote power switch label
● Refrigerant tube length and refrigerant charge
amount
● Label for a seal
● Warning label
 After operation is nished, check that items such as the instruction manual and warranty have not been lost
when handing over the outdoor unit to the customer.
A list of all the accessories is included in “Procedures and Technical Points for System Installation,” but the ac-
cessories required after installation are those shown in the table above.
* In addition to the table above, the following are supplied with the outdoor unit at the time of shipment. Refer to
them together with this test run manual.
● Procedures and Technical Points for System Installation
● Procedures and Technical Points for Electrical Wiring Work
● Procedures and Technical Points for Test Run

II - 3
(3) Safety check
Insulation resistance check
Perform the following procedure to check the insulation up until the unit power terminal block.
Turn off the main power supply of the indoor and outdoor units.
Turn off the power switch in the terminal box of the outdoor unit.
Connect the insulation tester between each of the power terminals of the R phase, O phase, and S phase and the
ground terminal on the power terminal block (TB1) in the terminal box, and take measurements. (Figure 1)
If a resistance check is required on the outdoor unit side, turn on the power switch in the terminal box, and take
measurements.
* Measurement criterion: 1 MΩ or more
(2) Fuel tube connector leak check
Open the liquid tube cock.
Use a gas leak detector (Figure 2), soap solution, or the like to check that there is no leak from the fuel tube con-
nector of the outdoor unit.
(4) Indoor/outdoor control wire connection conrmation
Check the indoor/outdoor control wire connection regardless of whether there is a warning or not. Before performing the
check, turn off the power of all devices (including controllers) that are connected to the indoor/outdoor control wire.
1. Ground fault check
1-1
Measure the resistance between one end of the indoor/outdoor control wire and
the point of ground screw, as well as the resistance between the other operating
line end and the point of ground screw. Are both measured resistance values in
MΩ unit (innite)?
Yes 2-1
No 1-2
1-2 Because the indoor/outdoor control wiring has a ground fault, search for the location of the
ground fault.
2. Short circuit check
2-1
Measure the resistance between the indoor/outdoor control wires on the terminal
board of the outdoor unit.
The measured resistance value is around 75 to 100Ω?
When setting multiple "ON (SHORT)" to switches with terminal resistor, the
resistance value mentioned above is 1 over number of units. *1
Yes 3-1
No 2-2
2-2
If the wiring has a short circuit, search for the location of the short circuit on the indoor/
outdoor control wire.
If it is open, check the terminal resistor of outdoor board, and check the wiring from out-
door board to outdoor terminal board.
3. Wire break or dis-
connection check 3-1
Measure the resistance between the indoor/outdoor control wires on the boards
of all devices that are connected to the control wires.
Any location with measured resistance values in MΩ units (innite)?
Yes 3-2
No 4-1
3-2 Because the wiring has a break, search for the location of the break.
4. Shield wire check 4-1 A shield wire is used as an indoor/outdoor control wire? Yes 4-2
No 5-1
4-2 Only one end of the shield wire is grounded? Yes 5-1
No 4-3
4-3 Ground only one end of the shield wire.
5. Others 5-1 Check total wire length and the number of branch connections and connected units.
* Terminal resistor is basically “ON (SHORT) for one unit only, but depending on the installation status can be set to
“ON (SHORT)” for up to 3 units.
Figure 2
Figure 1

II - 4
● Device ground check
Is earth ground securely obtained?
● If an error is found in the wiring connections, the following check procedure allows you to quickly identify the
location of the error. When performing the check procedure, it is convenient if you have a drawing showing the lay-
out of devices and wiring routes to refer to.
· In systems that are comprised of multiple wiring systems linked together, you can quickly identify the loca-
tion of the error by removing the ‘link’ and determining whether each individual system is good or not good. A
warning in a certain system does not necessarily mean that the cause of the error is in that system. Check the
indoor/outdoor control wires of all systems, since the abnormality may be in the wiring of a system other than
that where the warning is triggered.
· When the wiring route is divided into segments by the terminal block of each unit, it is advisable to check the
wiring connection on a segment by segment basis, starting with the segment between the outdoor unit and in-
door unit 1, then the segment between the indoor units 1 and 2, and so on. This allows you to nd the location of
the connection failure between units.
· If the device contains operation wire branched from indoor/outdoor control wire, there may be failure in the
indoor/outdoor control wire before branches.
● If communication error occurs, check the sensor's ground fault.
● Check sensors (thermistor) ground fault.
Before checking, turn off the device and remove target sensor from the board before performing measurement.
6. Ground fault check
6-1
Measure the resistance between one end of the indoor/outdoor
control wire and the point of ground screw, as well as the
resistance between the other operating line end and the point of
the ground screw. Are both measured resistance values in MΩ
unit (innite)?
Yes Good
No 6-2
6-2 Replace thermistor and wiring
Outdoor
unit 1
Outdoor
unit 2
Outdoor
unit 3
Indoor Indoor Indoor
Indoor Indoor Indoor
Indoor Indoor Indoor
Wire connecting the systems Wire connecting the systems
Outdoor
unit
Indoor 1 Indoor 2 Indoor 3
Branch indoor/outdoor
control wire
Ground faults or short circuits can also occur in the indoor/outdoor control wiring before branches.
Outdoor
unit
Indoor 1 Indoor 2 Indoor 3 First, check the wire between the outdoor unit and indoor unit 1.
Then, check the wires between 2, 3, and so on in order.

II - 5
Standard: ∞
Measure resistance between the ground screw and terminal board 1. Measure resistance between the ground screw and terminal board 2. Standard: ∞ If there is resistance, a sensor ground fault has occurred.
Ground
Outdoor unit (Indoor unit)
Sensor
Sensor ground fault check (* Sensor ground faults will also result in communication faults.) · Sensor type (thermistor) ground fault check (turn off power for units) For each of the indoor/outdoor units connected by the operation cable, measure the resistance between the sensor wiring and ground screw for both of the sensor wires and ground screws.
Outdoor unit
Indoor unit 1
Ground
Ground Ground Ground
Ground
Remote controller
Indoor unit 2 Indoor unit 3 Indoor unit 4
Indoor/outdoor control wire
Ground Ground Ground
Remote controller
Outdoor unit
Indoor unit 1 Indoor unit 2 Indoor unit 3 Indoor unit 4
Ground
Ground
Indoor/outdoor control wire
Outdoor unit
Indoor unit 1 Indoor unit 2 Indoor unit 3 Indoor unit 4
Ground
Ground
Remote controller
Ground Ground Ground
⑤
Indoor/outdoor control wire
Ground fault check Measure resistance between the ground
screw and terminal board 1. Measure resistance between the ground screw and terminal board 2. Standard:∞
Wire break or disconnection check
Measure resistance on the termi- nal board of each unit.
Short circuit check
Measure resistance between terminal board 1 and terminal board 2. Standard:Approx.75to100Ω(with one terminal resistor present)
Example: A wire break or disconnection occurs at x (with one outdoor unit terminal resistor
present).
The resistance value for ,, and isapprox.75to100Ω.
The resistance value for and is∞. * If the resistance for is∞,checktheterminalresistorfortheoutdoormain
board, and check wiring between the outdoor main board and the outdoor unit terminal board.