Sakura SSR-L-009 Owner's manual

Sakura Air Conditioner
User-friendly, Earth-friendly
Manual
for
Installation, Operation & Maintenance
Sakura Water Source Heat Pump (package)
(SSR-L/J-009 ~ 072)
R-410a
Ref, S- 177 / 07 / 11

Installation
Definition
Unit
Placement-V ertical
Single/multiple refrigeration circuit, one unit section with fan
outlet.
Unit Placement-Horizontal
See Figures 1 and 2
Sakura’s heat pumps must be hung from the ceiling as
shown in Figure 1. Mounting brackets, rubber grommets,
bolts and washers are in place on the unit. The mounting
brackets are designed to accept up to 3/8-inch threaded
rods. A flat washer and two nuts (not supplied by
Sakura) should be used to mount the unit on the ceiling-
attached threaded rods. When installed, the heat pump
should be slightly pitched toward the condensate drain
connection.
See Figure 3
Sakura’s heat pumps must be installed on a level
surface. We recommend placing a carpet pad or other
isolating material under the unit to prevent noise from
transmitting to the building structure. If the unit is installed
in a closet adjacent to the conditioned space, provide an
insulated return air duct with at least one 90-degree bend.
If a free return air system is used, position the filter-side of
the unit as close as possible to the return air grille.
Note: The unit is shipped from the factory with access to
the electrical box such that return air enters the unit from
the right side when facing the electric control box.
Model Number Nomenclature
SSR-L/J
043 H H E
V oltage Unit Model number Unit T ype T emperature Range Design Series
D = 208-230/60/1
E = 265/60/1
F = 208-230/60/3
G = 460/60/3
J = 380/50/3
K = 575/60/3
L = 220/50/1
H = Horizontal Unit
V = Vertical Unit
H = Standard Range
L = Low Temperature
1

Figure 1: Horizontal mounting detail (L009-J072H)
SEE GROMMET DETAIL
(SEE FIGURE 2)
Figure 2: Grommet detail
Figure 3: Typical vertical installation detail
2
HANGER RODS
（BY OTHERS）
WATER OUT FPT CONNECTION
(SEE DIMENSIONAL DATA)
ACCESS TO COMPRESSOR
WATER COIL，REVERSING VALVE
WATER IN FPT CONNECTION
(SEE DIMENSIONAL DATA)
3/4" O.D. COPPER
CONDENSATE DRAIN
ELECTRICAL ACCESS
FLANGE ON FILTER GUIDE
FOR DUCT CONNECTION
FILTER LEFT OR RIGHT SIDE
REMOVAL.DUCTEO RETURN AIR
LIFT AND PULL ON NON-DUC
FLANGE ON FILTER GUIDE
FOR DUCT CONNEC TION
φ25mm HOLE FOR LINE VOLTAGE
CONDUIT CONNECTION
NOTES
1）USE A BACKUP WRENCH ON FITTINGS WHEN MAKING WATER
CONNECTIONS
2）DO NOT SCREW DUCTWORK INTO THE HEAT PUMP CABINET USE
THE FLANGES PROVIDED ON FIL TER GUIDES AND BLOWER
OPENING。
THREADED
R
OD
(BY OTHERS)
3/8”LOCKING NUT
TOP PANEL
ADJUSTABLE SLOT IN
HANGER BRACKET
WASHER
HANGER BRACKET
VIBRATION ISOLATION
GROMMET
WASHER(BY OTHERS)
MUST COVER ENTIRE
BOTTOM OF GROMMET
RETAINING NUTS
(BY OTHERS)
NOTES:
1) AN INTERNAL BLOWER ACCESS
PANEL IS PROVIDED FOR
SERVICING UNIT. FULL SERVICE
PANELS ARE AVAILABLE ON ALL
SIDES.
2) THE ELECTRICAL CONTROL
PANEL IS LOCATED INSIDE THE
UNIT.
3) DO NOT SCREW DUCTWORK INTO
THE HEAT PUMP CABINET. USE
THE FLANGES PROVIDED ON THE
FILTER GUIDE AND THE BLOWER
OPENING.
4) USE ABACK-UP WRENCH ON
FITTINGS WHEN MAKING WATER
CONNECTIONS.
5) THE ELECTRICAL BOX CAN BE
MOUNTED ON THE OPPOSITE
SIDE OF THE CABINET.
6) THE SIDE DUCT CONNECTOR CAN
BE MOUNTED ON THE OPPOSITE
SIDE TO PROVIDE FILTER FROM
THE OTHER SIDE
1 DIA HOLE FOR
FILED CONDUIT CONNECTION
NECTION(SEE DIMENSIONAL DATA)
ELECTRICAL CONTROL
PANEL LOCATION
INTERNAL BLOWER
PANEL LOCATION
WATER OUT FPT CONNECTION
(SEE DIMENSIONAL DATA)
WATER IN FPT CONNECTION
(SEE DIMENSIONAL DATA)
SERVICE PANEL
3/4OD COPPER CONDENSATE
DRAIN 1” P-TRAP INTERNALLY
(INSTALLED AT FACTORY)
DISCHARGE AIR DUCT
CONNECTION TOP DUCT CONNECTION
SIDE DUCT CONNECTION
FITERS
FITERS
BOTTOM DUCT
CONNECTION
SERVICE PANEL

Figure 4：Horizontal mounting detail (J086~142H)
VIBRATION ISOLATION GROMMET
(SEE FIGURE 5)
Figure 5: Grommet detail
THREADED ROD
（BYOTHERS）
Figure 6：Installation space requirement (Dimensions in mm)
HANGER BRACKET
VIBRATION ISOLATION GROMMET
3
RETAINING NUTS
（BYOTHERS）
WASHER（BYOTHERS）
MUST COVER ENTIRE BOTTOM OF
GROMMET
Filter length
MIN 500
MIN 500
Maintaence space
Return air
Space needed for filter take out
Air discharge
Horizontal unit
(top view)
Compressor access panel
electric access panel
Maintanence space
MIN 600 Maintanence space
Fan access panel
This drawing is for left hand piping unit
Filter length
Space needed for filter take out
(Only L009~J072 )

Water supply
Neve
r
operate the heat pump without wate
r
flowing through its
water-to-refrigerant heat exchanger coil. This may cause severe
damage to the unit.
For proper water flow rates, refer to the unit catalog.
Condensate Drain
See Figures 7and 8
The condensate drain is set up for a3/4” OD copper connection.
The condensate pipe or hose installed must have aminimum
1-inch trap in the condensate line. All condensate
piping must pitch away from the unit for proper drainage. Check
local codes for compliance.
Note: All vertical units have an internal 1-inch trap built
into the condensate line.
All units require afield-installed condensate line.
Figure 7: Condensate trap detail –vertical unit
5. After it’s been completely cleaned and drained, fill loop with
water at an alkaline level of approximately pH 7.5.
6. Connect heat pump to the piping loop.
7. Make sure all entrained air is purged from loop and each unit
is operating at its specified flow rate.
Fi
g
u
r
e 8: Condensate t
r
a
p
detail –horizontal unit
3/4" O.D.
Condensate
2”-3”
1" Min. Internal Trap
(
B
y
Sakura
)
Closed-Loop Systems
Follow these steps to install closed-loop systems.
1. Leave unit unconnected or isolated using shutoff valves as
building water loop is initially flushed.
2. Fill water system with 1lb. trisodium phosphate for every 50
gallons of water.
3. Purge piping of trapped air; set supplemental heater to
maintain 43.3℃.; and, circulate solution for approximately 8
hours.
4. Drain system completely and repeat the entire flushing
process, if necessary
1" Min. Internal
Drain Pan
T
r
ap
(
B
y
Others
)
Optional Hose Kits
W ater Hoses: 300mm and 600mm flexible water hoses are
available for connections to the heat pump and adapters. Use
two properly sized wrenches, one on the unit FPT fitting and
one on the hexagonal fitting when connecting hoses. Do not
use wrench on hose or on the sleeve that crimps the fitting onto
the hose. Hoses must not be pulled taut, twisted or kinked.
Connections should not be over tightened.
Before pressurizing the water system, closely inspect hoses
and fittings to be sure there are no cuts, abrasions, twists, or
kinks. Make sure hoses will not be in contact with any sharp
surface or edge while in use.
4

Figu
r
e9: Discha
r
ge con
v
e
r
sion(009-142)
Discharge Conversion – Horizontal Unit
All horizontal unit sizes from 009H to 072H can be field-converted
from straight discharge to side discharge.
1. Set the unit on alevel surface.
2. Remove blower access panel.
3. Remove top panel.
4. Remove screws that secure the panel in which blower is
mounted.
5. Re-install blower panel assembly for side discharge configuration.
(Assembly will be flipped 180 degrees.) See unit specification
sheet for dimensional information.
6. Re-install the top of the unit.
7. Re-install the blower access panel where the blower panel
assembly was for straight-through discharge.
8. After first operation, check all fasteners for tightness.
Ductwork
If areturn duct is used, it may be fastened to the flanges on the
filter guides; however, be sure to leave enough room for filter
replacement.
The flanges at the blower opening may be used for aflexible
duct connection between the heat pump and the supply air duct.
Be sure the blower wheel turns freely and is centered before
making this connection.
The discharge or supply air duct should be insulated and have at
least one 90-degree bend prior to the first discharge grille.
Flexible duct connections are recommended to reduce noise
transmission from the unit through the duct.
Heat pump life expectancy and efficiency depends on adequate
airflow. See unit data sheet for nominal cfm information.
Proper duct installation is essential for full airflow. We recommend
the duct be installed according tothe guidelines. (See Table
1.) There should be no turns or duct connections in the minimum
discharge duct length. Otherwise, fan airflow could be greatly
reduced.
36
Min. Straight Max. Duct(mm) Min. Duct(mm)
Model (mm) Width Height Width Height
009 600 213 206 160 152
013 600 213 206 160 152
016 650 262 229 211 178
019 650 262 229 211 178
024 700 262 287 211 236
030 700 262 287 211 236
036 800 300 310 249 259
043 800 300 310 249 25.9
052 900 363 318 312 267
062 900 363 318 312 267
072 900 363 318 312 267
5
Figure 10: Ductwork configuration
Table 1: Duct dimensions
All dimensions in mm
7
4
25
MIN
MIN STRAIGHT
DISCHARGE LENGTH DUCT
SIZE
MAX
DUCT
SIZE
MAX/MIN
DIVERGENCE
OF TRANSITION=7°

Operation
Startup
After installing, connecting ductwork and condensate lines and
wiring, unit is ready for startup. Check all internal wire
connections and connections to external control devices.
A disconnector with appropriate value should be mounted to
the wiring circuit.
6
Please do wiring according to the attached wire diagram. A
ticking sound can be heard when the unit is electrified. And then
you may please debug the unit in accordance with the manual of
thermostat.
1. Turn the thermostat fan switch to the “ON” position. Unit
blower should start.
Note: Unit may not start for 3 minutes due to anti-short
cycle relays.
2. Check the airflow and make sure no supply grilles or
duct dampers are closed to restrict airflow.
3. Set the thermostat temperature setting to low and turn the
systems switch to the heating mode.
4. Gradually increase the temperature to approximate room
temperature until unit starts.
5. After operating the unit for 10 minutes, check the air
temperature rise between supply and return airstreams. The
rise should be at least 10℃.
6. Using asurface pyrometer or other device, check entering
and leaving water temperatures. The recommended
temperature drop between entering and leaving water may
range from 3-5℃at 7℃EWT (Entering Water Temperature)
or from 3-8℃ at 21℃EWT(At heating mode in winter).
Note: If any of the above conditions do not exist, one or
more of the following problems exist: low airflow, low
water flow or unit not performing properly.
7. Set the thermostat system switch to cooling mode and
reduce temperature setting gradually until unit starts.
After operating the unit for afew minutes, check if it is
functioning properly and providing satisfactory cooling.
Note: Minimum dry bulb temperature drop between
supply and return airstreams should be about 9℃A
water temperature rise of 7℃-14℃could be anticipated
at relatively low water flow rates.
Maintenance
Air Filters
Do not operate the heat pump without an air filter. Clean
the filters at least once every three months and more
frequently in dusty or unclean environments. Dirty filters will
cause inefficient heat pump performance.
Air Coil and Blower Wheel
Check the air coil and blower wheel at least once each
year and clean as necessary.
Compresso
r
Sakura heat pumps have been designed with switches that
protect the unit’s refrigerant system. They will automatically
shut down the compressor if refrigerant pressure rises too
high or drops too low.
General Service
Any repair or service on the unit must be performed by
qualified service personnel.
Factory-mounted Options
Cooling-only
Units are available for those applications requiring no
heating from the unit .
Extended range
Allows the unit to operate at lower entering water
temperature, includes insulated piping and insulated
coaxial heat exchanger.
25/50 mm filter
25 and 50 mm filter rack replaces the 10mm rack to allow for
more efficient and lasting 25 or 50mm filters
Field-mounted Options
Water Flow Switch
The Water Flow Switch will shut off the unit when the water
flow is smaller than limit value to protect the system
Flexible hose kits
Flexible hose kits are available in, 3/4-inch and 1-inch
diameters, 600mm and 900mm long. Each hose is
constructed of braided stainless steel and has steel fittings
with a swivel at one end. Hoses are rated at minimum 1000
kPa.

Electrical specification
Electrical Service and Fusing
Warning: To avoid severe electrical shock, turn off
power before servicing controls.
Unit must be installed in compliance with local codes.
Route power wires through aproperly sized disconnect
switch.
Consult the wiring diagrams inside the cover of the
electrical box to complete the connection. See nameplate
for proper fuse sizing, minimum circuit ampacity and
voltage requirements. If an auxiliary electrical heater is
used, it must be installed with apower supply separate
from the heat pump.
Electrical Data
Power wire
Compressor Fan
Motor
Model Power
RLA LRA FLA
Total
current A
Min/Max
Voltage Breaking current Wire
V A Number
diameter
L009 3.60 17.80 0.39 3.99 10 1.5mm2 3
L013 5.40 26.10 0.52 5.92 15 1.5mm2 3
L016 6.25 27.44 0.85 7.10 15 1.5mm2 3
L019 7.75 31.83 0.94 8.69 25 2.5mm2 3
220V/50/1 198/264
L024 9.30 36.80 1.11 10.41 25 2.5mm2 3
L030 11.90 61.00 1.40 13.30 32 2.5mm2 3
L036 13.10 68.20 2.07 15.17 32 4mm2 3
J043 6.30 44.00 2.00 8.30 25 2.5mm2 5
J052 7.20 50.00 3.82 11.02 25 2.5mm2 5
J062 8.20 57.00 4.06 12.26 32 2.5mm2 5
380V/50/3 342/418
J072 10.10 73.00 5.82 15.92 32 4mm2 5
7
Microprocessor control
1.Basic Features
3) High and low voltage protection
Mode selection:Cooling,Heating,Ventilation,Dehumidify,Auto. High and low voltage protection shuts off
the unit the event the unit voltage is too
high or too low to protect the internal
components from damage.
Fan speed control:High,medium,low fan speed.
Power detection:170-250V ±5%
2. Protection function
1) Fan speed control
4) Low pressure switch bypass
Fan speed control is a standard feature with the
microprocessor control system. It Permits Low pressure switch bypass ignores the
low Pressure input signal for 120 seconds
each time. The compressor starts to
eliminate nuisance trip and to al ow the
suction pressure to build at Startup.
motor operate with High/Medial/low speed to meet
different requirement
2) Safety lockout
5) Condensate overflow protection
Safety lockout prevents compressor operation if any
of the safety switches trip: high pressure switch, low
pressure switch or optional freezestat. The unit can be
reset from the wall thermostat or from the main unit
disconnect.
Condensate overflow protection stops
compressor operation if the drain pan
sensor detects moisture at the top of the
pan to prevent overflow due to clogged or
slowdraining condensate piping.

6) Other protection:
Refrigerant leaking protection , Frost-protection,Water TEMP
protection, Coil Frost-protection,High discharge TEMP
protection,Water flow switch(Optional),Fire-alarm,Lcd error
code display, Water pump interlock,Timer-power-on/off ,
Economy operation mode etc .
3. Microprocessor control Out/Input ：：
Number Code Content Description
1 AD1 Return air TEMP -40~80℃
2 AD2 Coil 1TEMP -40~80℃
3 AD3 Coil 2TEMP -40~80℃
4 AD4 Cooling water outlet TEMP -40~80℃
5 AD5 Domestic hot water TEMP -40~80℃
Analog
signals input
6 N/A
1 DI1 High pressure protection 1 24VAC
2 DI2 Low pressure protection 2 24VAC
5 DI5 Cooling water flow switch 24VAC
6 DI6 N/A 24VAC
7 DI7 Electrical heater protection 24VAC
8 DI8 N/A 24VAC
9 DI9 Overflow protection 24VAC
Digital
signals input
10 DI10 Fire alarm protection 24VAC
11 DI11 N/A 24VAC
12 DI12 N/A 24VAC
1 OUT1 Failure output Dry contact
2 OUT2 N/A Dry contact
3 OUT3 Domestic hot water pump Dry contact
4 OUT4 Cooling water pump Dry contact
5 OUT5 Low fan speed Dry contact
6 OUT6 Medium fan speed Dry contact
7 OUT7 Hign fan speed Dry contact
Digital
signals output
10 OUT10 4-Way valve 1 Dry contact
11 OUT11 Compressor 1 Dry contact
12 OUT12 Electrical heater Dry contact
8
SAKURA CORPORATION
Tel: [phone] Fax: [phone] E-mail: [email protected] URL: www.sakura-aircon.com
2-17-1. Eda-minami, Tsuzuki-ku, Yokohama, Kanagawa, 224-0007, Japan