Lennox FCA 120, FCA 140, FCA 160, FCA 190, FCK 60 Installation, Operation And Maintenance Manual

INSTALLATION
OPERATING &
MAINTENANCE MANUAL

ROOFTOP
FLEXY™

English
August 2003

IOM / ROOF-TOP FLEXY™ Series - Page 1

CONTENTS

The present manual applies to the following ROOFTOP versions :

FCA 60 - FCA 70 - FCA 85 - FCA 100 - FCA 120 - FCA 140 - FCA 160 - FCA 190
FCK 60 - FCK 70 - FCK 85 - FCK 100 - FCK 120 - FCK 140 - FCK 160 - FCK 190
FHA 60 - FHA 70 - FHA 85 - FHA 100 - FHA 120 - FHA 140 - FHA 160 - FHA 190
FHK 60 - FHK 70 - FHK 85 - FHK 100 - FHK 120 - FHK 140 - FHK 160 - FHK 190
FDA 60 - FDA 70 - FDA 85 - FDA 100 - FDA 120 - FDA 140 - FDA 160 - FDA 190
FDK 60 - FDK 70 - FDK 85 - FDK 100 - FDK 120 - FDK 140 - FDK 160 - FDK 190
FGA 60 - FGA 70 - FGA 85 - FGA 100 - FGA 120 - FGA 140 - FGA 160 - FGA 190
FGK 60 - FGK 70 - FGK 85 - FGK 100 - FGK 120 - FGK 140 - FGK 160 - FGK 190

FXA 25 - FXA 30 - FXA 35 - FXA 40 - FXA 55 - FXA 70 - FXA 85 - FXA 100 - FXA 1 10 - FXA 140 - FXA 170
FXK 25 - FXK 30 - FXK 35 - FXK 40 - FXK 55 - FXK 70 - FXK 85 - FXK 100 - FXK 110 - FXK 140 - FXK 170

The technical information and specifications contained in this manual are for reference only. The manufacturer reserves the right to modify these without
warning and without obligation to modify equipment already sold.

Ref. FLEXY_IOM/0803-E

NOTES FOR UNIT FITTED WITH GAS BURNER :

THE UNIT MUST BE INSTALLED IN ACCORDANCE WITH LOCAL
SAFETY CODES AND REGULATIONS AND CAN ONLY BE USED IN
WELL VENTILLATED AREA.

PLEASE READ CAREFULLY THE MANUFACTURER'S INSTRUCTIONS
BEFORE STARTING THIS UNIT.

THIS MANUAL IS ONLY VALID FOR UNITS DISPLAYING THE
FOLLOWING CODES:

GB IR GR DA NO FI IS

In case these symbols are not displayed on the unit, please refer to the
technical documentation which will eventually detail any modifications
required to the installation of the unit in a particular country.

INSTALLATION
OPERATION
MAINTENANCE MANUAL

Page 2 - IOM / ROOF-TOP FLEXY™ Series

CONTENTS

IMPORT ANT NOTICE......................................................................................... 3

INSTALLATION

TRANSPORT - HANDLING .............................................................................................. 4

INSTALLATION ............................................................................................................... 12

INST ALLATION ON A ROOF MOUNTING FRAME...........................................................13

INSTALLA TION ON POSTS ............................................................................................ 15

COMMISSIONING........................................................................................................... 16

OPERATION

VENTILATION ................................................................................................................. 21

AIR FLOW BALANCING.................................................................................................. 23

FILTERS .........................................................................................................................39

FANST ART OPERA TION................................................................................................. 40

FX AIR FLOW BALANCING............................................................................................. 41

HOT WA TER COILS ....................................................................................................... 44

GAS BURNERS.............................................................................................................. 45

CONTROL FUNCTIONS

USING THE KP 17 COMFORT DISPLA Y........................................................................ 57

USING THE KP02 MAINTENANCE DISPLAY................................................................. 58

USING THE KP07 REMOTE GRAPHICAL DISPLA Y...................................................... 72

BMS CONTACTS KIT...................................................................................................... 81

CLIMATIC™ P ARAMETERS............................................................................................82

CONTROL INTERF ACE CLIMALINK/CLIMALOOK......................................................... 88

WIRING DIAGRAMS

ELECTRICAL WIRING DIAGRAMS LIST OF ITEMS....................................................... 96

ELECTRICAL WIRING DIAGRAMS .............................................................................. 100

TROUBLESHOOTING

SAFETY AND ERROR CODES..................................................................................... 117

MAINTENANCE DIAGNOSTIC .....................................................................................123

MAINTENANCE PLAN ..................................................................................................126

WARRANTY ..................................................................................................................129

CERTIFICATES

ISO 9001 CERTIFICA TION........................................................................................... 130

PED CERTIFICA TION OF CONFORMITY..................................................................... 131

GLAS WOOL FIRE CLASS ........................................................................................... 132

33 KW GAS BURNER CE CERTIFICA TION OF CONFORMITY................................... 133

60 KW GAS BURNER CE CERTIFICA TION OF CONFORMITY................................... 134

120 KW GAS BURNER CE CERTIFICA TION OF CONFORMITY................................. 135

180 kW GAS BURNER CE CERTIFICA TION OF CONFORMITY ................................. 136

INSULATION FIRE CLASS ........................................................................................... 137

CONTENTS

IOM / ROOF-TOP FLEXY™ Series - Page 3

IMPORTANT NOTICE

IMPORTANT NOTICE

All work on the unit must be carried out by a qualified and authorised employee.

Non-compliance with the following instructions may result in injury or serious accidents.

Work on the unit:

• The unit shall be isolated from the electrical supply by disconnection and locking using the
main isolating switch.

• Workers shall wear the appropriate personal protective equipment (helmet, gloves,
glasses, etc.).

Work on the electrical system:

• Work on electric components shall be performed with the power off (see below) by
employees having valid electrical qualification and authorisation.

Work on the refrigerating circuit(s):

• Monitoring of the pressures, draining and filling of the system under pressure shall be
carried out using connections provided for this purpose and suitable equipment.

• To prevent the risk of explosion due to spraying of coolant and oil, the relevant circuit shall
be drained and at zero pressure before any disassembly or unbrazing of the refrigerating
parts takes place.

• There is a residual risk of pressure build-up by degassing the oil or by heating the
exchangers after the circuit has been drained. Zero pressure shall be maintained by
venting the drain connection to the atmosphere on the low pressure side.

• The brazing shall be carried out by a qualified brazier. The brazing shall comply with stan­dard NF EN1044 (minimum 30% silver).

Replacing components:

• In order to maintain CE marking compliance, replacement of components shall be carried
out using spare parts, or using parts approved by Lennox.

• Only the coolant shown on the manufacturer's nameplate shall be used, to the exclusion of
all other products (mix of coolants, hydrocarbons, etc.).

CAUTION:

In the event of fire, refrigerating circuits can cause an explosion and spray coolant gas and oil.

Page 4 - IOM / ROOF-TOP FLEXY™ Series

TRANSPORT - HANDLING

Figure 1

DELIVERY CHECKS

On receipt of a new equipment please check the following
points. It is the customer's responsibility to ensure that the
products are in good working order:

- The exterior has not been damaged in any way.

- The lifting and handling equipment are suitable for the
equipment and comply with the specifications of the handling
instructions enclosed here-in.

- Accessories ordered for on site installation have been
delivered and are in good working order.

- The equipment supplied corresponds to the order and
matches the delivery note.

If the product is damaged, exact details must be confirmed
in writing by registered post to the shipping company within
48 hours of delivery (working days). A copy of the letter must
be addressed to Lennox and the supplier or distributor for
information purposes. Failure to comply will invalidate any
claim against the shipping company.

RATING PLATE

The rating plate provides a complete reference for the model
and ensures that the unit corresponds to the model ordered.
It states the electrical power consumption of the unit on start­up, its rated power and its supply voltage. The supply voltage
must not deviate beyond +10/-15 %. The start-up power is
the maximum value likely to be achieved for the specified
operational voltage. The customer must have a suitable
electrical supply. It is therefore important to check whether
the supply voltage stated on the unit's rating plate is
compatible with that of the mains electrical supply. The rating
plate also states the year of manufacture as well as the type
of refrigerant used and the required charge for each
compressor circuit.

STORAGE

When units are delivered on site they are not always required
immediately and are sometimes put into storage. In the event
of medium to long-term storage, we recommend the following
procedures :

- Ensure that there is no water in the hydraulic systems.

- Keep the heat exchanger covers in position (AQUILUX cover).

- Keep protective plastic film in position.

- Ensure the electrical panels are closed.

- Keep all items and options supplied in a dry and clean
place for future assembly before using the equipment.

MAINTENANCE KEY

On delivery we recommend that you keep the key which is
attached to an eyebolt in a safe and accessible place. This
allows you to open the panels for maintenance and
installation work.
The locks are ¼ turn +
then tighter (figure 2).

CONDENSATE DRAINS

The condensate drains are not assembled when delivered
and are stored
in the electrical panel with their clamping collars.
To assemble them, insert them
on the condensate tray outlets
and use a screwdriver to
tighten the collars (figure 3).

Figure 3

Figure 2

IOM / ROOF-TOP FLEXY™ Series - Page 5

TRANSPORT - HANDLING

DIMENSIONS AND WEIGHTS

Condensation

Airflow configuration

WEIGHT (kg) SLING

std std high

Standard Centrifugal 12345678 gas gas 1 2 3

FC/FH 060 - Cooling only and heat pump

X - X------X2825 2255 1470 630 1060 - - 2210 - ­X - - - - X - - X - 2825 2255 1470 630 1090 - - 2210 - ­X - - X X - X X - - 2825 2285 1470 630 1090 - - 2210 - -

- X X------X2875 2255 2070 630 1230 - - 2590 1855 -

- X - - - X - - X - 2875 2255 2070 630 1260 - - 2590 1855 -

- X - X X - X X - - 2875 2285 2070 630 1260 - - 2590 1855 -

FG 060 - GAS

X - X------X2825 2255 1470 630 - 1210 1280 2210 - -

- X X------X2875 2255 2070 630 - 1380 1450 2590 1855 -

FC/FH 070 - Cooling only and heat pump

X - X------X2825 2255 1470 630 1075 - - 2210 - ­X - - - - X - - X - 2825 2255 1470 630 1100 - - 2210 - ­X - - X X - X X - - 2825 2285 1470 630 1100 - - 2210 - -

- X X------X2875 2255 2070 630 1245 - - 2590 1855 -

- X - - - X - - X - 2875 2255 2070 630 1270 - - 2590 1855 -

- X - X X - X X - - 2875 2285 2070 630 1270 - - 2590 1855 -

FC/FH 070 - GAS

X - X------X2825 2255 1470 630 - 1230 1300 2210 - -

- X X------X2875 2255 2070 630 - 1400 1470 2590 1855 -

FC/FH 085 - Cooling only and heat pump

X - X------X3785 2255 1495 630 1220 - - 2830 2330 ­X - - - - X - - X - 3785 2255 1495 630 1270 - - 2830 2330 ­X - - X X - X X - - 3785 2285 1495 630 1275 - - 2830 2330 -

- X X------X3835 2255 2080 630 1435 - - 3230 2430 1870

- X - - - X - - X - 3835 2255 2080 630 1485 - - 3230 2430 1870

- X - X X - X X - - 3835 2285 2080 630 1490 - - 3230 2430 1870

FC/FH 085 - GAS

X - X------X3785 2255 1495 630 - 1320 1390 2830 2330 -

- X X------X3835 2255 2080 630 - 1535 1605 3230 2430 1870

FC/FH 100 - Cooling only and heat pump

X - X------X3785 2255 1495 630 1280 - - 2830 2330 ­X - - - - X - - X - 3785 2255 1495 630 1320 - - 2830 2330 ­X - - X X - X X - - 3785 2285 1495 630 1320 - - 2830 2330 -

- X X------X3835 2255 2080 630 1495 - - 3230 2430 1870

- X - - - X - - X - 3835 2255 2080 630 1545 - - 3230 2430 1870

- X - X X - X X - - 3835 2285 2080 630 1545 - - 3230 2430 1870

FC/FH 100 - GAS

X - X------X3785 2255 1495 630 - 1380 1450 2830 2330 -

- X X------X3835 2255 2080 630 - 1595 1665 3230 2430 1870

HEIGHT (mm)

HOOD (mm)

WIDTH (mm)

LENGTH (mm)

Page 6 - IOM / ROOF-TOP FLEXY™ Series

TRANSPORT - HANDLING

DIMENSIONS AND WEIGHTS

WEIGHT (kg) SLING

std std high

Standard Centrifugal 12345678 gas gas 1 2 3

FC/FH 120 - Cooling only and heat pump

X - X------X3585 2255 1470 630 1530 - - 2700 - 2080
X - - - - X - - X - 3585 2255 1470 630 1580 - - 2700 - 2080
X - - X X - X X - - 3585 2285 1470 630 1600 - - 2700 - 2080

- X X------X3635 2255 1930 630 1805 - - 3000 2410 1880

- X - - - X - - X - 3635 2255 1930 630 1855 - - 3000 2410 1880

- X - X X - X X - - 3635 2285 1930 630 1875 - - 3000 2410 1880

FG 120 - GAS

X - X------X4035 2255 1470 630 - 1840 1890 3000 - 2310

- X X------X4085 2255 1930 630 - 2115 2165 3300 2700 2080

FC/FH 140 - Cooling only and heat pump

X - X------X3585 2255 1470 630 1630 - - 2700 - 2080
X - - - - X - - X - 3585 2255 1470 630 1680 - - 2700 - 2080
X - - X X - X X - - 3585 2285 1470 630 1700 - - 2700 - 2080

- X X------X3635 2255 1930 630 1905 - - 3000 2410 1880

- X - - - X - - X - 3635 2255 1930 630 1955 - - 3000 2410 1880

- X - X X - X X - - 3635 2285 1930 630 1975 - - 3000 2410 1880

FG 140 - GAS

X - X------X4035 2255 1470 630 - 1920 1970 3000 - 2310

- X X------X4085 2255 1930 630 - 2000 2050 3300 2700 2080

FC/FH 160 - Cooling only and heat pump

X - X------X3595 2255 2070 900 2050 - - 2700 - 2090
X - - - - X - - X - 3595 2255 2070 900 2120 - - 2700 - 2090
X - - X X - X X - - 3595 2285 2070 900 2140 - - 2700 - 2090

- X X------X3645 2255 2070 900 2275 - - 2700 - 2090

- X - - - X - - X - 3645 2255 2070 900 2345 - - 2700 - 2090

- X - X X - X X - - 3645 2285 2070 900 2365 - - 2700 - 2090

FG 160 - GAS

X - X------X4045 2255 2070 900 - 2410 2460 3000 - 2320

- X X------X4095 2255 2070 900 - 2635 2685 3000 - 2320

FC/FH 190 - Cooling only and heat pump

X - X------X3595 2255 2070 900 2175 - - 2700 - 2090
X - - - - X - - X - 3595 2255 2070 900 2245 - - 2700 - 2090
X - - X X - X X - - 3595 2285 2070 900 2265 - - 2700 - 2090

- X X------X3645 2255 2070 900 2400 - - 2700 - 2090

- X - - - X - - X - 3645 2255 2070 900 2470 - - 2700 - 2090

- X - X X - X X - - 3645 2285 2070 900 2490 - - 2700 - 2090

FG 190 - GAS

X - X------X4045 2255 2070 900 - 2540 2600 3000 - 2320

- X X------X4095 2255 2070 900 - 2765 2825 3000 - 2320

HEIGHT (mm)

CASQUETTE (mm)

Condensation

Airflow configuration

WIDTH (mm)

LENGTH (mm)

IOM / ROOF-TOP FLEXY™ Series - Page 7

TRANSPORT - HANDLING

HANDLING

The equipment can be moved using the lifting holes on the
top of the unit.
The "sling" length is the value that we recommend for safe
handling of the equipment.

Some units can only be supported by four slings at right­angles. Others require different lengths (see figures 4).
It is essential that all lifting holes are used and that the slings
are all of the same size to avoid damaging the equipment.

Sling length = 2210 mm
for angle = 45°C

FC.../FH.../FD.../FG... 060 & 070

LENGTH HEIGHT WIDTH AUVENT WEIGHT (kg)

lateral ventil standard

MODELS mm mm mm mm mm kg
FX 025 4070 1635 1055 490 600 950
FX 030 4070 1635 1055 490 600 980
FX 035 4750 2255 1290 490 600 1400
FX 040 4750 2255 1290 490 600 1450
FX 055 4750 2255 1290 490 600 1600
FX 070 5050 2255 1725 890 600 1800
FX 085 5050 2255 1725 890 600 1900
FX 100 5050 2255 1725 890 600 2000
FX 110 5650 2255 2000 860 - 2620
FX 140 5650 2255 2000 860 - 2620
FX 170 5650 2255 2000 860 - 2650

DIMENSIONS AND WEIGHTS

Figure 4 for all handling
drawings - pages 7 to11

Page 8 - IOM / ROOF-TOP FLEXY™ Series

TRANSPORT - HANDLING

FC.../FH.../FD.../FG... 060 & 070 with centrifugal fans

Sling length = 2590 mm
for angle = 45°C

Sling length = 2330 mm
for angle = 64,5°C

FC.../FH.../FD.../FG... 085 & 100

Sling length = 2430 mm
for angle = 45°C

FC.../FH.../FD.../FG... 085 & 100 with centrifugal fans

Sling length = 3230 mm

for angle = 45°C

Sling length = 2830 mm

for angle = 45°C

Sling length = 1870

mm

for angle = 45°C

Figure 3 for all handling drawings - pages 7 to11

IOM / ROOF-TOP FLEXY™ Series - Page 9

TRANSPORT - HANDLING

Sling length = 2080 mm
for angle = 45°C

FC.../FH.../FD... 120 & 140

Sling length = 2700 mm
for angle = 45°C

Sling length = 2410 mm
for angle = 45°C

FC.../FH.../FD... 120 & 140 with centrifugal fans

Sling length = 2080 mm
for angle = 45°C

FG... 120 & 140 with gas burner

Sling length = 2700 mm

for angle = 45°C

Sling length = 3000 mm

for angle = 45°C

Sling length = 1880 mm
for angle = 45°C

Figure 3 for all handling drawings - pages 7 to11

Page 10 - IOM / ROOF-TOP FLEXY™ Series

TRANSPORT - HANDLING

Sling length = 2700 mm
for angle = 45°C

FG... 120 & 140 with gas burner and centrifugal fans

Sling length = 3300 mm

for angle = 45°C

Sling length = 2080 mm
for angle = 45°C

Sling length = 2090 mm
for angle = 45°C

FC.../FH.../FD... 160 & 190

FC.../FH.../FD... 160 & 190 with centrifugal fans

Sling length = 2700 mm

for angle = 45°C

Sling length = 2320 mm
for angle = 45°C

FG... 160 & 190

FG... 160 & 190 with centrifugal fans

Sling length = 3000 mm

for angle = 45°C

Figure 3 for all handling drawings - pages 7 to11

IOM / ROOF-TOP FLEXY™ Series - Page 11

1

1

2

TRANSPORT - HANDLING

FX 25 & 30

Sling length 1 = 3000 mm
Sling length 2 = 2350 mm

1

1

2

FX 35 - 40 - 55

Sling length 1 = 3700 mm
Sling length 2 = 2850 mm

1

1

2

Sling length 1 = 3900 mm
Sling length 2 = 3000 mm

FX 70 - 85 - 100

1

1

2

Sling length 1 = 4300 mm
Sling length 2 = 3250 mm

FX 110 - 140 - 170

Page 12 - IOM / ROOF-TOP FLEXY™ Series

PRELIMINARY CHECK

Before installing the equipment, the following items MUST be
checked :

- Is there sufficient space for the equipment?

- Is the surface on which the equipment is to be installed
sufficiently solid to withstand its weight ? A detailed
study of the frame must be made beforehand.

- Do the supply and return ductwork openings excessively
weaken the structure?

- Are there any obstructing items which could hinder the
operation of the equipment?

- Does the electrical power available correspond to the
equipment's electrical specifications?

- Is drainage provided for the condensate?

- Is there sufficient access for maintenance?

- Installation of the equipment could require different
lifting methods which may vary with each installation
(helicopter or crane). Have these been evaluated ?

- Ensure that the unit is installed in accordance with the
installation instructions and applicable codes.

- Check to ensure that the refrigerant lines do not rub
against the cabinet or against other refrigerant lines.

In general, make sure no obstacles (walls, trees or roof ledges)
are obstructing the duct connections or hindering assembly
and maintenance access.

INSTALLATION

Figure 5

INST ALLA TION REQUIREMENTS

The surface on which the equipment is to be installed must
be clean and free of any obstacles which could hinder the
flow of air to the condensers:

- Avoid uneven surfaces

- Avoid installing two units side by side or close to each
other as this may restrict the airflow to the condensers.

Before installing a packaged rooftop unit it is important to
understand :

- The direction of prevailing winds.

- The direction and position of air flows.

- The external dimensions of the unit and the dimensions
of the supply and return air connections.

- The arrangement of the doors and the space required to
open them to access the various components.

Figure 5 shows the required clearances and dimensions.

CONNECTIONS

- Ensure that all the pipework crossing walls or roofs are
secured and insulated.

- To avoid condensation problems, be sure all pipes are
insulated according to temperatures of fluids and type of
rooms.

NOTE : The AQUILUX protection sheets fitted to the finned
surfaces must be removed prior to start up.

MODELS ABCD
FC/FH/FG/FD

60

!!

!!

! 140 1400 2000 1400 2300

160 & 190 2000 2000 2000 2300
FX

25 & 30 * 1100 * 1700
35

!!

!!

! 55 * 1300 * 2300

70

!!

!!

! 100 * 1700 * 2300

110

!!

!!

! 170 * 2000 * 2300

* : according to connection

IOM / ROOF-TOP FLEXY™ Series - Page 13

2

INSTALLATION ON A ROOFMOUNTING FR AME

As levels are adjustable, observe the following
recommendations for correct installation of the equipment.

Above all, ensure that all the adjustable returns are
facing outward (1 - figure 6).
They are usually turned inside-out for transport.

Place the roof mounting frame on the trimmer beam by
first lining up the inlet and then the outlet. (2 - figure 7).

After levelling the frame, fix the surface flaps onto the
trimmer.

1

Figure 6

Figure 7

Figure 8

Page 14 - IOM / ROOF-TOP FLEXY™ Series

INSTALLATION ON A ROOFMOUNTING FR AME

When the frame is correctly positioned, it is
essential to secure the assembly with welding
seam (20 to 30 mm for every 200 mm) along
the outside, or by using an alternative method
(1 - figure 9).

Assembly joint (1 - figure 10)
Insulate the frame before installation. We recommend the minimum

application of 25 mm thick insulation.
Check that the covering is continuous and watertight (2 - figure 10).

CAUTION : To be effective, it must finsh behind the lip (3 - figure 10)

Before installing the equipment, make sure that the assembly seal is not damaged.
Once in position, the bottom of the equipment must be horizontal and against the roofcurb as shown on figure 11.

The installer must comply to local authority standards and specifications.

1

2

3

Figure 10

Figure 11

1

Figure 9

IOM / ROOF-TOP FLEXY™ Series - Page 15

INST ALLATION ON POSTS

The unit can be fitted on corner posts using the frame provided. The minimum height of the posts should be 400mm.

Figure 12

Page 16 - IOM / ROOF-TOP FLEXY™ Series

THIS WORK MUST ONLY BE CARRIED OUT
BY TRAINED REFRIGERA TION ENGINEERS

Before connecting the power :

- Ensure that the power supply between the building and
the unit meets local authority standards and that the
cable specification satisfies the start-up and operating
conditions.

- Ensure that the electrical connections in the control
panel and on the motors are secure.

- Ensure that all drive motors are secure.

- Ensure that the adjustable pulley blocks are secure and
that the belt is tensioned with the transmission correctly
aligned.

- Using the electrical wiring diagram, check the conformity
of the electrical safety devices (circuit breaker settings,
presence and rating of fuses).

At this point attach the manometers to the refrigerant circuit

Powering up the system with the unit isolating
switch

- Close the blower circuit breaker and the 24V control.

- Power up the unit by closing the isolator switch. At this
point the blower should start unless the CLIMATIC™
does not energise the contactor. In this particular case
the blower can be forced by bridging the COM and NO
wires on the connector J1 on the CLIMATIC controller.
Once the fan is running check the rotation direction.
Refer to the rotation arrow on the fan.

- The fan and other components direction of rotation is
checked during an end of line test. They should
therefore all turn in the same direction.

- If they run in the opposite direction, disconnect the
power supply to the machine at the building's mains
switch, reverse two phases of the incoming supply to the
machine and try again.

Using CLIMATIC™

- Check the voltages recorded against the rated values, in
particular on the system supply fans.

- If the readings on the fans are outside the limits, this
indicates excessive air flow which will affect the
thermodynamic performance. Refer to the "Air flow
balancing" section.

COMMISSIONING

1. Check the configuration

- You will need a KP02 maintenance controller or
CLIMALOOK with KP 14 interface.

1 Liquid crystal display
2 Raise/lower keys
3 "FILTER" Led (flashing red)
4 "ADDRESS" key
5 "MODE" key
6 "VALUE" key
7 "UNIT RUNNING" led
8 "MODE" led
9 "GENERAL ALARM" led.

- The jumpers are
factory set and the
configuration switches
are adjusted
depending on the
option selection and
the type of unit.

- Close the 24V control circuit breakers

- The CLIMATIC™ is starting. Wait for 30 seconds.

1.1 Check and adjust the factory configuration

- Reset the DAD smoke detector (if fitted)

Figure 14

Figure 13

Figure 16

Figure 15

IOM / ROOF-TOP FLEXY™ Series - Page 17

Check the setpoints on CLIMA TIC™ (LF 20).

COMMISSIONING

C0

Password technician Level 63

C98

Type of Unit Refer to configuration table LF20

C99

Type of Unit [off] Flexy [on] Linea On or OFF

C103

Humidity and enthalpy ma na g emen t Option

[off] LINEA
[on] only Flexy with Advanced Pack

C77

(Linea) Authorisation of defrost. Threshold of temperature
of refrigerant fluid ( in°C)

1.0°C for R407c

-3.0°C for R22

C79

Defrost cycle end value indicating the nr of Start-ups of the
condenser fan to signify the end of defrost

Linea set to1
Flexy set to 3

C101

Activation of all seasons control option [ON] / [OFF] if fitted

C73

All seasons control option on FLEXY -
Otherwise – unloading 50% of the compressors in cooling
mode

Set to 20.0°C for Linea
Set to 12°C for Flexy

C74

If option all seasons contr ol – shut d own condenser fans -
Otherwise - 100% unloading of compressors in cooling
mode -

Set to 12.0°C for Linea
Set to 5.0°C for Flexy

C49

Threshold of activation of the power exhaust fan according
to the position of the economiser damper (in %)

Set to 50%

C46

Number of minutes of anticipation per degrees. This allows
an anticipated start-up in the morni ng mode depending on
the outside temperature.

Set to 0

C83

Maximum usable power for electric heat (in %)

C90

Choice of operating mode for KP17 [ON] = KP17 in ON / OFF mode

C91

Identification number for the J-Bus connections

C93

Identification number for the c onne c tio ns lin k b etween
boards

C94

Number of boards linked on the bus

C95

Selection of the operating mode for KP017

C96

Selection of exchange mode for room temperature and
humidity-

C97

Selection of exchange mode for outdoor temperature and
humidity

C100

Activation of the dual-speed option for fan supply (Flexy)

C101

Activation of the all seasons control option

C102

Activation of the optimised defrost option

C05

Fault reset Set to ON

C06

Remote control, On / Off Unit Set to ON ( the unit should start)

Page 18 - IOM / ROOF-TOP FLEXY™ Series

Configuration table LF20

COMMISSIONING

F.A050 11
F.A060 12
F.A070 13
F.A085 14
F.A100 15
F.A120 16
F.A140 17
F.A160 18
F.A190 19

FXA025 20
FXA030 21
FXA035 22
FXA040 23
FXA055 24
FXA070 25
FXA085 26
FXA100 27
FXA110 28
FXA140 29
FXA170 30

F.K050 111
F.K060 112
F.K070 113
F.K085 114
F.K100 115
F.K120 116
F.K140 117
F.K160 118
F.K190 119

FXK025 120
FXK030 121
FXK035 122
FXK040 123
FXK055 124
FXK070 125
FXK085 126
FXK100 127
FXK110 128
FXK140 129
FXK170 130

Switches on KP01

1 = on .......................Option : pressure pick-up on air 500 pa (on FLEXY™ off = sensor 1000 pa)

2 = on | 3 = off ...................Option : hot water coil

2 = off | 3 = on ...................Option : electrical heater

2 = on | 3 = on ...................Option : gas burner

4 = on .......................Option : cycle reversing valve, compressors (heat pump)

5 = on .......................Option : heating of great power / or / pump (except freezing of the hot water coil)

6 = on .......................Option : fresh air, economiser

7 = on .......................Option : fresh air, all fresh air

8 = on .......................Option : KP02 / KP17

POWERING THE UNIT

- Power up the unit by closing the isolator switch (if fitted).

- Close all circuit breakers and power up the unit, remove
the bridge on connector J14 if fitted.

- If now only one of the components rotates in the wrong
direction, disconnect the power supply at the machine's
isolator switch (if fitted) and reverse two of the
component's phases on the terminal within the electrical
panel.

- Check the current drawn against the rated values, in
particular on the supply fan.

- If the readings on the fan are outside the specified limits,
this usually indicates excessive air flow which will affect
the life expectancy and the thermodynamic performan­ces of the unit. This will also increase the risks of water
ingress into the unit. Refer to the "air flow balancing"
section to correct the problem.

At this point attach the manometers to the refrigerant circuit.

RUN TEST

Start unit in cooling mode

Thermodynamic readings using manometers and prevailing
environmental conditions.
No rated values are given here. These depend on the
environmental conditions both outside and inside the building
during operation. However, an experienced refrigeration
engineer will be able to detect any abnormal machine
operation.

Safety test

- "Dirty filter" detection test : vary the set-point value in
respect to the air pressure value. Observe the response
of the CLIMA TIC™.

- Same procedure for detecting "Missing filter" or "Air flow
detection".

- Check the smoke detection function (if fitted).

- Check the Firestat by pressing the test button(if fitted).

- Disconnect the circuit breakers of the outdoor fans and
check the high pressure cut-out points on different
refrigerant circuits.

Reverse cycle test

This test is designed to check the good operation of the 4­way reversing valves on heat pump reversible systems. Start
the reverse cycle by adjusting the cold or hot temperature
threshold data according to the indoor and outdoor conditions
at the time of test.

IOM / ROOF-TOP FLEXY™ Series - Page 19

COMMISSIONING report

(4) SUPPLY BLOWER SECTION / VE NT ILATION TRAITEMENT

Type / Type:
Power displayed on plate / Puissance affichée sur la plaque:
Voltage displayed on plate / Tension affichée sur la plaque:
Current displayed on plate / Intensité affichée sur la plaque:

KW
V
A

N°1

……………………
……………………
……………………

N°2

……………………
……………………
……………………

Fan Type / Type de Ventilateur: Forward / Action

Backward / Réaction

Forward / Action
Backward / Réaction

Displayed Belt Length / Longueur Courroie affichée:

mm …………………… ……………………
Tension Checked/ Tension Vérifiée: Yes/Oui No/ Non Yes/Oui No/ Non
Alignment Checked / Alignement Vérifié: Yes/Oui No/ Non Yes/Oui No/ Non
Motor Pulley Dia/ Poulie Moteur Dia: DM mm …………………… ……………………

Fan Pulley Dia/ Poulie Ventilateur Dia: DP mm …………………… ……………………
Fan Speed / Vitesse rotation Ventilateur = Motor rpm x DM / DP

Averaged Measured Amps / Intensité Mesurée moyenne:

rpm

A

……………………
……………………

……………………
……………………

Shaft Mechanical Power (Refer to airflow balancing)
Puissance Mécanique à l’Arbre (Voir section réglage débit)

W …………………… ……………………
Operating point checked / Vérif. Point de fonctionnement: Yes/Oui No/ Non Yes/Oui No/ Non

Estimated Airflow / Estimation Débit d’Air

m3/h

…………………… ……………………

(5) AIRFLOW PRESS. SENSOR CHECK / VERIF. DES SECURITES PRESSOSTATS D’AIR

Measured pressure drop / Pertes de charge au pressostat

…………………………… mbar

Set Points Adjusted / Changement des consignes:
Yes/Oui No/ Non
If Yes enter new values/ Si oui noter les nouvelles consignes:

3410: ………… 3411: ………… 3412: …………

(6) EXTERNAL SENSOR CHECKS / VERIFICATION DES CAPTEURS EXTERNES

Check and record temp. in menu 2110 / Vérifier et mesurer les
températures. Dans menu 2110: Yes/Oui

No/ Non

Check electrical connections / Vérification des
connections électriques: Yes/Oui

No/ Non

100% Fresh Air / 100% Air neuf 100% return Air / 100% Air repris

Supply Temperature / Température Soufflage ………………………..°C ………………………..°C
Return Temperature / Température reprise ………………………..°C ………………………..°C
Outdoor Temperature / Température extérieure ………………………..°C ………………………..°C

(7) MIXING AIR DAMPERS CHECKS / VERIFICATIONS VOLETS DE MELANGE

Dampers open & close freely/

Volets s’ouvrent et se ferment OK

% Minimum FA:

%minimum Air Neuf:

Power exhaust checked/

Ventilateur extraction

Enthalpy s ensor(s) checked/

Control enthalpie installé

Yes/Oui No/ Non ……………..% Yes/Oui No/ Non Yes/Oui No/ Non

Site details / Informations site

Site / Site
Unit Ref/ N° Affaire
Installer/ Installateur

………………………………………

……………………………………....

………………………………………

Controller/ Contrôleur
Model/Modele
Serial No/ No Série
Refrigerant / Réfrigérant

………………………………….
……………….…………………
…………………………………
…………………………………

(1) ROO F IN S TALLATION / INSTALLATION SUR LE TOIT

Sufficient Access OK / Accès Suffisants
Yes/Oui

No/ Non

Condensate drain fitted / Drainage condensats
Installé Yes/Oui No/ Non

Roofcurb / Costière
OK Not OK/PasOK

(2) CONNECTIONS CHECK / VERIFICATIONS DE RACCORDEM ENTS

Phase check/ Vérification des Phases
Yes / Oui

No / Non

Voltage between Phases
Tension entre Phases

1 / 2
……………….

2 / 3
……………….

1 / 3
……………….

(3) CLIMATIC CONFIGURATION CHECK / VERIFIER LA CONFIGURATION CLIMATIC

CLIMATIC 50 Configured according to the Options and Specifications / CLIMATIC 50 configuré en fonction des options et des
spécifications: Yes/Oui

No/ Non

Page 20 - IOM / ROOF-TOP FLEXY™ Series

COMMISSIONING report

(8) REFRIGERATION S ECT ION / SECTION REFRIGERATION

Outdoor Fan Motor Current / Intensité Moteurs Batterie externe: Check Rotation

Motor 1 / Moteur 1 L1 ……..A L2 ……..A L3 ……A Yes/Oui No/ Non
Motor 2 / Moteur 2 L1 ……..A L2 ……..A L3 ……A Yes/Oui No/ Non

Compressor

Voltage/ Tension

Compresseur.

Motor 3 / Moteur 3 L1 ……..A L2 ……..A L3 ……A Yes/Oui No/ Non Comp1: …….. V
Motor 4 / Moteur 4 L1 ……..A L2 ……..A L3 ……A Yes/Oui No/ Non Comp2: …….. V
Motor 5 / Moteur 5 L1 ……..A L2 ……..A L3 ……A Yes/Oui No/ Non Comp3: …….. V
Motor 6 / Moteur 6 L1 ……..A L2 ……..A L3 ……A Yes/Oui No/ Non Comp4: …….. V

Compressor Amps COOLING / Intensité

Compresseur MODE FROID

Pressures & Temperatures / Pressions & températures

Temperatures / Temperatures Pressures / Pressions

Phase 1 Phase 2 Phase 3

Suction/ Asp Disch / refoul

LP/ BP HP / HP
Comp 1 …..… A …..… A …..… A ……… °C ……… °C ……… Bar ……… Bar
Comp 2 …..… A …..… A …..… A ……… °C ……… °C ……… Bar ……… Bar
Comp 3 …..… A …..… A …..… A ……… °C ……… °C ……… Bar ……… Bar

Comp 4 …..… A …..… A …..… A ……… °C ……… °C ……… Bar ……… Bar

Check Reversing valves./
Vérifier vannes d’inversion:

Valve1/Vanne1: Yes/Oui

No/ Non

Valve2/Vanne2: Yes/Oui

No/ Non

Valve3/Vanne3: Yes/Oui

No/ Non

Valve4/Vanne4: Yes/Oui

No/ Non

Compressor Amps HEATING / Intensité

Compresseur en Pompe à Chaleur

Pressures & Temperat ur es / P re ssion s & températures

Temperatures / Temperatures Pressures / Pressions

Phase 1 Phase 2 Phase 3

Suction/ Asp Disch / refoul

LP/ BP HP / HP
Comp 1 …..… A …..… A …..… A ……… °C ……… °C ……… Bar ……… Bar
Comp 2 …..… A …..… A …..… A ……… °C ……… °C ……… Bar ……… Bar
Comp 3 …..… A …..… A …..… A ……… °C ……… °C ……… Bar ……… Bar

Comp 4 …..… A …..… A …..… A ……… °C ……… °C ……… Bar ……… Bar

HP cut out / Coupure HP ……Bar LP cut out / Coupu re séc urité BP ………..…... Bar

Refrigerant charge / Charge réfrigérant C1 : ………..kg C2 : ………..kg C3 : ………..kg C4 : ………..kg

(9) ELECTRIC HEATER SECTION / SECTION RECHAUFFEUR ELECTRI Q UE

Type / Type: …………………………………………………. Serial No/ No Série.:………………………..

AMPS 1st stage (Baltic) / Intensité 1er étage (Baltic) AMPS 2nd stage (Baltic) / Intensité 2e étage (Baltic)

1 ………………. 2 ………………. 3 ………………. 1 ………………. 2 ………………. 3 ……………….

(10) HOT WATER COIL SECTION / SECTION BATTERIE EAU CHAUDE

Check Three Way Valve Movement / Vérification Mouvement Vanne trois voies: Yes/Oui No/ Non

(11) GAS HEATING SECTION / RAMPE GAZ

Gas Burner N°1 / Brûleur gaz N°1 Gas Burner N°2 / Brûleur gaz N°2

Size / Taille:

……………………….

Valve type / Type vanne:

…………………….

Size / Taille:

……………………….

Valve type / Type vanne:

…………………….

Pipe size/ tuyauterie:

Gas type / Type gas : G…….

Pipe size/ tuyauterie

Gas type / Type gas : G…….

Line press./ press. ligne :

………………………

Drop test / test pression

Yes/Oui No/ Non

line press./ press. ligne :

………………………

Drop test / test pression

Yes/Oui No/ Non

Check manifold pressure/ Pression injection:

High fire/Grande allure…….…Low fire/Petite allure………..

Check manifold pressure/ Pression injection:

High fire/Grande allure…….…... Low fire/Petite allure………..

Pressure cut out airflow press switch / Pression coupure

pressostat débit d’air : ……………………mbar /Pa

Pressure cut out airflow press switch / Pression coupure

pressostat débit d’air : ……………………mbar /Pa

Motor amps

I moteur:
……….A

Flue temp /

temp fumées

……… °C

CO2 %:

………%

CO ppm:
………%

Motor Amps

I Moteur:
……….A

Flue temp /

temp fumées

………. °C

CO2 %:

………%

CO ppm:
………%

(12) REMOTE CONTROL BMS CHECK / VERIFICATIONS BMS CONTROL A DISTANCE

Type / Type:

……………………….

Sensor type / Type Capteur:

…………………………..

KP07 KP/17 checked/ vérifiées:

Yes/Oui

No/ Non

Interconnect wiring checked:

Yes/Oui No/ Non

Comments.....................................................................................................................................................................................

.......................................................................................................................................................................................................

.......................................................................................................................................................................................................

IOM / ROOF-TOP FLEXY™ Series - Page 21

VENTILATION

BELT TENSION

On delivery, the drive belts are new and correctly tensioned. After the first 50 operating
hours check and adjust the tension. 80% of the total elongation of belts is generally
produced during the first 15 hours of operation.

Before adjusting the tension, make sure that the pulleys are correctly aligned.
To tension the belt, set the height of motor support plate by moving the plate

adjustment screws.

This recommended deflection is 16 mm per metre from centre to centre.

Check that according to the diagram below (figure 18), the following ratio remains
the same.

A (m)

= 20

P (mm)

The belts should always be replaced when :

- the disk is set to maximum,

- the belt rubber is worn or the wire is visible.

Replacement belts must have the same rated size as the ones they are replacing.
If a transmission system has several belts, they must all be from the same
manufacturing batch (compare serial numbers).

NOTE :

An under-tensioned belt will slip, heat and wear prematurely. On the other hand, if
a belt is over-tensioned, the pressure on the bearings will cause them to over-heat
and wear prematurely. Incorrect alignment will also cause the belts to wear
prematurely.

A

P

Figure 18

Figure 17

Page 22 - IOM / ROOF-TOP FLEXY™ Series

VENTILaTION : PULLEYS

MOUNTING AND ADJUSTING PULLEYS

Fan pulley removal

Remove the 2 screws and put one of them in the extraction
threaded screw.

Screw in fully. The hub and the pulley will separate from each
other.

Remove the hub and the pulley by hand without damaging
the machine.

Fan pulley installation

Clean and de-grease the shaft, hub and conical bore of the
pulley. Lubricate the screws and install the hub and pulley.
Position the screws without turning them.

Place the assembly on the shaft and screw in the screws
alternatively and evenly. Using a mallet or a hammer with a
wooden wedge, tap on the face of the hub to keep the
assembly in place. Torque the screws to 30 Nm.

Take the pulley in both hands and shake it vigorously to make
sure everything is in place.
Fill the holes with grease for protection.

NOTE : During installation, the key should never protrude out
of its groove.
After 50 operating hours, check that the screws are still in
place.

Motor pulley installation and removal

The pulley is held in position by the key and a screw located
in the groove. After unlocking, removing this screw by pulling
against the shaft spindle (if necessary, use a mallet and tap
uniformly on the hub to remove it).
To assemble, proceed in the reverse order after having
cleaned and de-greased the motor shaft and the pulley bore.

Pulleys alignment

After adjusting one or both of the pulleys, check the
transmission alignment using a ruler placed on the inner face
of the two pulleys.

NOTE : The warranty may be affected if any major modification
is made to the transmission without obtaining our agreement
beforehand.

Figure 19

Figure 20

Figure 21

IOM / ROOF-TOP FLEXY™ Series - Page 23

The actual resistance of ductwork systems is not always identical to the calculated theoretical values. To rectify this, it may be
necessary to modify the pulley and belt setting. To this effect, the motors are fitted with variable pulleys.

Measure the absorbed amps

If the absorbed amps are greater than the rated values, the ventilation system has a lower pressure drop than anticipated.
Reduce the flow by reducing the rpm. If the system resistance is significantly lower than design, there is a risk that the motor
will overheat resulting in an emergency cut out.

If the absorbed amps are lower than the rated values, your system has a higher pressure drop than anticipated. Increase the
flow by increasing the rpm. At the same time you will increase the absorbed power which may result in having to increase the
motor size.

To carry out the adjustment and to avoid a time-consuming re-start, stop the machine and if necessary lock the main switch.
First unscrew the 4 Allen screw(s) on the pulley (see figure 23).

0,5 1 1,5 2 2,5 3 3,5 4 4,5 5,0 5,5

8450 /

120

95 116 5 113,9 111,8 109,7 107,6 105,5 103,4 101,3 99,2 97,1 95,0 ­D8450 20,2 28,0 5 21,0 21,8 22,5 23,3 24,1 24,9 25,7 26,4 27,2 28,0 ­8550 /

136

110 131 5 128,9 126,8 124,7 122,6 120,5 118,4 116,3 114,2 112,1 110,0
D8550 20,6 31,2 5 21,6 22,7 23,8 24,8 25,9 26,9 28,0 29,1 30,1 31,2 ­8670

171

145 166 5 163,9 161,8 159,7 157,6 155,5 153,4 151,3 149,2 147,1 145,0 ­D8670 20,5 31,1 5 21,5 22,7 23,8 24,8 25,7 26,9 27,9 29,0 30,0 31,1 -

The easiest way to determine the fan rotation speed is to
use a tachometer. If not available the fan rpm can be
estimated using the following two methods.

1st Method with the pulley secured in place :

L

Measure the distance between the two outside faces of the
pulley.

Using table 1 the motor pulley actual diameter can be
estimated

ALLEN WRENCH 4

AIRFLOW BALANCING

Pulley
type

Pulley

external

Ø

Min Ø

/

Min dist.

Max Ø

/

Max dist.

nr of

turns
from fully
closed to

fully

open

Actual Ø (DM) or distance between faces for a given

number of turns from fully closed with SPA belt in (mm)

Figure 22

Figure 23

Page 24 - IOM / ROOF-TOP FLEXY™ Series

AIRFLOW BALANCING

2nd method when adjusting the pulley :

- Close the pulley fully and count the number of turns
from fully closed position. Using table 1 determine the
motor pulley actual diameter.

- Record the fix fan pulley diameter.(DF)

- Determine the fan speed using the following formula:

rpm

FAN

= rpm

MOTOR

x DM / D

F

Where :

rpm

MOTOR

: ....... from the motor plate or table 2

DM : ...................... from t able 1

DF: ........................ from machine

Once the pulleys are adjusted and the belt checked and
tensioned, start the fan motor and record the Amps and
Voltage between the phases :
Using the measured data and table 2

- Theoretical mechanical power at the fan shaft :

P

meca fan

=P

meca Motor

x η

Transmission

P

meca fan

=P

elec

x η

meca motor

x η

Transmission

P

meca fan

= V x I x √3 x cosϕ x η

meca motor

x η

Transmission

This formula can be approximated in this way

P

meca fan

= V x I x 1.73 x 0.85 x 0.76 x 0.9

With the fan "rpm" and the mechanical power at the fan shaft
an operating point and the supplied airflow can be estimated
using the fan curves.

CHECKING AIRFLOW AND ESP

Using the fan curves on page 25, 26, 27, the airflow, the total
pressure available (P

TOT

) and the corresponding dynamic
pressure (Pd) can now be estimated, for a specific operating
point;

The next step consist in estimating the pressure losses across
the unit.
This can be achieved using the "dirty filter pressure sensor"
and the accessories pressure drop table:
Also the pressure drop due to the duct inlet into the roof-top
unit can be taken as 20 to 30 Pa.

∆P

INT

= ∆P

filter

+ coil + P

Inlet

+ ∆P

Options

using the results from above, the external static pressure (ESP)
can then be estimated:

ESP = P

TOT

- Pd - ∆P

INT

T able 2

Motor Size Nom, Speed Cos meca motor
0,75 kW 1400 rpm 0,77 0,70
1,1 kW 1425 rpm 0,82 0,77
1,5 kW 1430 rpm 0,81 0,75
2,2 kW 1430 rpm 0,81 0,76
3,0 kW 1425 rpm 0,78 0,77
4 kW 1425 rpm 0,79 0,80
5,5 kW 1430 rpm 0,82 0,82

Economiser EU7 Hot water coil Electric heater Roofcurb Horizontal Gaz
100% open Filter S H S H Base frame Roofcurb H

SIZE Air flow (m3/h) (Pa) (Pa) (Pa) (Pa) (Pa) (Pa) (Pa) (Pa) (Pa)

Min. 10 000 4 67 12 14 5 8 10 41 22

60 Nom. 12 000 6 93 16 19 8 8 11 59 26

Max. 15 000 9 135 24 28 8 10 13 92 31

Min. 12 000 6 56 6 12 5 5 13 59 29

70 Nom. 14 000 8 73 8 16 5 5 16 80 34

Max. 18 000 12 113 13 25 8 8 22 132 47

Min. 14 000 8 73 8 16 5 8 18 44 7

85 Nom. 16 000 10 113 13 25 8 8 26 57 10

Max. 22 000 16 159 18 36 8 10 32 109 12

Min. 16 000 10 93 10 20 8 10 26 57 10

100 Nom. 20 000 14 135 15 30 10 13 32 90 12

Max. 22 000 16 159 18 36 13 15 38 109 15

Min. 18 000 12 113 13 25 10 13 32 33 29

120 Nom. 22 000 16 159 18 36 13 15 38 49 35

Max. 24 000 18 184 21 41 15 18 44 58 40

Min. 20 000 14 135 15 30 10 15 35 40 31

140 Nom. 24 000 18 184 21 41 15 18 46 58 40

Max. 25 000 19 197 22 44 15 20 50 63 43

Min. 22 000 16 87 9 18 8 8 24 49 45

160 Nom. 28 000 22 132 13 27 8 10 30 79 56

Max. 32 000 26 165 17 34 13 13 34 103 64

Min. 24 000 18 101 10 20 10 10 34 58 64

190 Nom. 33 000 27 174 18 36 13 13 41 109 77

Max. 36 000 30 201 21 41 13 15 48 130 89

Table 5.52

IOM / ROOF-TOP FLEXY™ Series - Page 25

AIRFLOW BALANCING

EXAMPLE

The unit used for this example is a FHK 060N with standard supply and return airflow configuration. It is also fitted with an
economiser and an electric heater type H.
It is fitted with a AT 18-18 fan which curve is shown on page xxx and a 2.2 kW motor.

- Motor rpm : 1430 rpm

- cos ϕ = 0.81

- Voltage = 400 V

- Current = 4,68A

P

mech fan

= V x I x

√√

√√

√ 3 x cos

ϕ ϕ

ϕ ϕ

ϕ x

ηη

ηη

η

mech motor

x

ηη

ηη

η

Transmission

= 400 x 4.68 x

√√

√√

√ 3 x 0.81 x 0.76 x 0.9 = 1,79 kW

The unit is also fitted with a transmission kit 1

- Fixed Fan pulley : 250 mm

- Motor adjustable pulley type "8450" opened 1 turn from fully closed or measured distance between pulley end plates is
21,8 mm: from table xxx it can be determined that the motor pulley has a diameter of 111,8 mm

rpm

FAN

= rpm

MOTOR

x DM / DF = 1430 x 118,2 / 250 = 640 rpm

Using the fan curve below the operating point can be located.
It can be determined that the fan is providing approximately

12 000 m3/h with a total pressure P

TOT

= 420 Pa

640

420

12

10

1.79

Hd (mmH2O)

AT 18-18

The pressure losses in the unit are the
sum of all pressure drops across the
different parts of a unit :

- Coil and filter (measured) = 105 Pa

- Options = 6 Pa for economiser and
8 Pa for electric heater H

∆P = 105 + 6 + 8 =

119 Pa

The dynamic pressure at 1200m3/h is
given at the bottom of the fan curve

Pd = 100 Pa

The external static pressure available is
therefore

ESP = P

TOT

- Pd - ∆PI

NT

= 420 - 100 - 119 = 201 Pa

Figure 24

Page 26 - IOM / ROOF-TOP FLEXY™ Series

AIRFLOW BALANCING

KIT FAN TYPE CURVE
NR PICTURE

SINGLE TWIN ON PAGE

FC/FH/FD... 060 - Standard

K1 AT 18-18 S - 34
K2 AT 18-18 S - 34
K3 AT 18-18 S - 34
K4 AT 18-18 S - 34
K5 AT 18-18 S - 34
K6 AT 18-18 S - 34
K7 AT 18-18 S - 34
K8 AT 18-18 S - 34
K9 AT 18-18 S - 34
K10 AT 18-18 S - 34
K11 AT 18-18 S - 34
K12 AT 18-18 S - 34
K13 AT 18-18 S - 34

FC/FH/FD... 070 - Standard

K1 AT 18-18 S - 34
K2 AT 18-18 S - 34
K3 AT 18-18 S - 34
K4 AT 18-18 S - 34
K5 AT 18-18 S - 34
K6 AT 18-18 S - 34
K7 AT 18-18 S - 34
K8 AT 18-18 S - 34
K9 AT 18-18 S - 34
K10 AT 18-18 S - 34

FC/FH/FD... 085 - Standard

K1 AT 15-15 G2L - 32
K2 AT 15-15 G2L - 32
K3 AT 15-15 G2L - 32
K4 AT 15-15 G2L - 32
K5 AT 15-15 G2L - 32
K6 AT 15-15 G2L - 32
K7 AT 15-15 G2L - 32
K8 AT 15-15 G2L - 32
K9 - AT 15-15 S 32
K10 AT 15-15 G2L - 32
K11 - AT 15-15 S 32
K12 AT 15-15 G2L - 32
K13 - AT 15-15 S 32

FC/FH/FD... 100 - Standard

K1 AT 15-15 G2L - 32
K2 AT 15-15 G2L - 32
K3 AT 15-15 G2L - 32
K4 AT 15-15 G2L - 32
K5 AT 15-15 G2L - 32
K6 - AT 15-15 S 32
K7 AT 15-15 G2L - 32
K8 - AT 15-15 S 32
K9 AT 15-15 G2L - 32

KIT FAN TYPE CURVE
NR PICTURE

SINGLE TWIN ON PAGE

FC/FH/FD... 120 - Standard

K1 - AT 18-18 S 34
K2 - AT 18-18 S 34
K3 - AT 18-18 S 34
K4 - AT 18-18 S 34
K5 - AT 18-18 S 34
K6 - AT 18-18 S 34
K7 - AT 18-18 S 34
K8 - AT 18-18 S 34
K9 - AT 18-18 S 34

FC/FH/FD... 140 - Standard

K1 - AT 18-18 S 34
K2 - AT 18-18 S 34
K3 - AT 18-18 S 34
K4 - AT 18-18 S 34
K5 - AT 18-18 S 34
K6 - AT 18-18 S 34
K7 - AT 18-18 S 34
K8 - AT 18-18 S 34
K9 - AT 18-18 S 34

FC/FH/FD... 160 - Standard

K1 - AT 18-18 S 34
K2 - AT 18-18 S 34
K3 - AT 18-18 S 34
K4 - AT 18-18 S 34
K5 - AT 18-18 S 34
K6 - AT 18-18 S 34
K7 - AT 18-18 S 34
K8 - AT 18-18 S 34
K9 - AT 18-18 S 34
K10 - AT 18-18 S 34

FC/FH/FD... 190 - Standard

K1 - AT 18-18 S 34
K2 - AT 18-18 S 34
K3 - AT 18-18 S 34
K4 - AT 18-18 S 34
K5 - AT 18-18 S 34
K6 - AT 18-18 S 34
K7 - AT 18-18 S 34
K8 - AT 18-18 S 34
K9 - AT 18-18 S 34
K10 - AT 18-18 S 34

IOM / ROOF-TOP FLEXY™ Series - Page 27

AIRFLOW BALANCING

KIT FAN TYPE CURVE
NR PICTURE

SINGLE TWIN ON PAGE

FC/FH/FD... 085 - Side discharge

K14 - AT 15-15 S 32
K15 - AT 15-15 S 32
K16 - AT 15-15 S 32
K17 - AT 15-15 S 32
K18 - AT 15-15 S 32
K19 - AT 15-15 S 32
K20 - AT 15-15 S 32
K21 - AT 15-15 S 32

FC/FH/FD... 100 - Side discharge

K10 - AT 15-15 S 32
K11 - AT 15-15 S 32
K12 - AT 15-15 S 32
K13 - AT 15-15 S 32
K14 - AT 15-15 S 32
K15 - AT 15-15 S 32
K16 - AT 15-15 S 32
K17 - AT 15-15 S 32
K18 - AT 15-15 S 32
K19 - AT 15-15 S 32

FC/FH/FD... 120 - Side discharge

K10 - AT 18-13 S 33
K11 - AT 18-13 S 33
K12 - AT 18-13 S 33
K13 - AT 18-13 S 33
K14 - AT 18-13 S 33
K15 - AT 18-13 S 33
K16 - AT 18-13 S 33
K17 - AT 18-13 S 33
K18 - AT 18-13 S 33

FC/FH/FD... 140 - Side discharge

K10 - AT 18-13 S 33
K11 - AT 18-13 S 33
K12 - AT 18-13 S 33
K13 - AT 18-13 S 33
K14 - AT 18-13 S 33
K15 - AT 18-13 S 33
K16 - AT 18-13 S 33
K17 - AT 18-13 S 33

Page 28 - IOM / ROOF-TOP FLEXY™ Series

AIRFLOW BALANCING

KIT FAN TYPE CURVE
NR PICTURE

SINGLE TWIN ON PAGE

FG... 060 - Gas

K1 - AT 15-15 S 32
K2 - AT 15-15 S 32
K3 - AT 15-15 S 32
K4 - AT 15-15 S 32
K5 - AT 15-15 S 32
K6 - AT 15-15 S 32
K7 - AT 15-15 S 32
K8 - AT 15-15 S 32
K9 - AT 15-15 S 32
K10 - AT 15-15 S 32

FG... 070 - Gas

K1 - AT 15-15 S 32
K2 - AT 15-15 S 32
K3 - AT 15-15 S 32
K4 - AT 15-15 S 32
K5 - AT 15-15 S 32
K6 - AT 15-15 S 32
K7 - AT 15-15 S 32
K8 - AT 15-15 S 32
K9 - AT 15-15 S 32
K10 - AT 15-15 S 32
K11 - AT 15-15 S 32

FG... 085 - Gas

K1 - AT 15-15 S 32
K2 - AT 15-15 S 32
K3 - AT 15-15 S 32
K4 - AT 15-15 S 32
K5 - ADN 325L 36
K6 - AT 15-15 S 32
K7 - ADN 325L 36
K8 - AT 15-15 S 32
K9 - AT 15-15 S 32
K10 - ADN 325L 36
K11 - ADN 325L 36

FG... 100 - Gas

K1 - AT 15-15 S 32
K2 - AT 15-15 S 32
K3 - AT 15-15 S 32
K4 - AT 15-15 S 32
K5 - ADN 325L 36
K6 - AT 15-15 S 32
K7 - AT 15-15 S 32
K8 - ADN 325L 36
K9 - AT 15-15 S 32
K10 - ADN 325L 36

KIT FAN TYPE CURVE
NR PICTURE

SINGLE TWIN ON PAGE

FG... 120 - Gas

K1 - ADN 370L 37
K2 - ADN 370L 37
K3 - ADN 370L 37
K4 - ADN 370L 37
K5 - ADN 370L 37
K6 - ADN 370L 37
K7 - ADN 370L 37
K8 - ADN 370L 37

FG... 137 - Gas

K1 - ADN 370 L 37
K2 - ADN 370 L 37
K3 - ADN 370 L 37
K4 - ADN 370 L 37
K5 - ADN 370 L 37

FG... 160 - Gas

K1 - ADN 450 L 38
K2 - ADN 450 L 38
K3 - ADN 450 L 38
K4 - ADN 450 L 38
K5 - ADN 450 L 38
K6 - ADN 450 L 38
K7 - ADN 450 L 38
K8 - ADN 450 L 38
K9 - ADN 450 L 38
K10 - ADN 450 L 38

FG... 190 - Gas

K1 - ADN 450 L 38
K2 - ADN 450 L 38
K3 - ADN 450 L 38
K4 - ADN 450 L 38
K5 - ADN 450 L 38
K6 - ADN 450 L 38
K7 - ADN 450 L 38
K8 - ADN 450 L 38
K9 - ADN 450 L 38
K10 - RDN 450 K 35