Installat ion, operat ion and
maintena nce Manual
●● Modular & flexible
construction
●● Heat recovery solutions
●● High efficiency
components
Plug & Play Modular Air Handling Units
39MQ
Contents
1 - SAFETY considerations................................................................................................................................................ 3
1.1 - General...................................................................................................................................................................................... .3
1.2 - Applications.............................................................................................................................................................................. .3
1.3 - Instruction types....................................................................................................................................................................... .3
2 - Transport.............................................................................................................................................................................. 5
2.1 - Unloading by fork-lift truck.................................................................................................................................................... .5
2.2 - Unloading by crane.................................................................................................................................................................. .5
2.3 - Lifting a unit with a base frame.............................................................................................................................................. .5
2.4 - Roof unit with bitumen roof................................................................................................................................................... .6
2.5 - Roof unit with steel roof.......................................................................................................................................................... .6
2.6 - Pre-assembly storage................................................................................................................................................................ .6
3 - INSTALLATION......................................................................................................................................................................... 6
3.1 - Installation of unit and ducts.................................................................................................................................................. .6
3.2 - Installation of steel roof........................................................................................................................................................... .8
3.3. - Electrical installation and plumbing................................................................................................................................... .14
3.4 - Protection measures............................................................................................................................................................... .17
3.5 - Dismantling and disposal...................................................................................................................................................... .17
3.6 - General.................................................................................................................................................................................... .17
2
1 - SAFETY considerations
1.3 - Instruction types
1.1 - General
The following warning pictograms and labels with text are
used.
The 39MQ air handling units (AHUs) are designed and
manufactured in accordance with the CE machine
directive. In order to guarantee safe operation and use of
the unit, carefully read and observe the instructions in this
document and pay special attention to the warnings that
apply to this unit. Any modifications in the design and/or
installation of the AHU that are carried out without
discussion with Carrier and without advance written
agreement will result in the loss of the right to any
warranty claims and any claim for injury to personnel as a
result of these modifications.
Lifting point
This pictogram shows where the AHU must be lifted and
is positioned on the support beam.
All work must be carried out by sufficiently trained
personnel.
All applicable personal safety devices must be used to
ensure safe working conditions. Safety gloves and glasses
must be worn for all maintenance operations. A respiratory
protection mask must be worn when changing the filters.
The A-weighted equivalent continuous sound pressure
level can be above 85 dB(A), depending on the motor size,
fan size, fan speed and the location where the AHU is
installed. This means that ear defenders must be worn,
when the fan is running.
All doors and hatches must have at least one lock that can
only be opened with a special device.
Earthing
This pictogram indicates where the AHU must be earthed
and is on one of the support beams beneath the casing in
the fan section.
• The electrical components in the AHU must be
earthed, except for components with double
insulation and/or components with a supply
voltage below 50 V.
• The electrical components must be installed in
accordance with national and local regulations.
Heating and cooling coils are manufactured and supplied
in accordance with guidelines of the Pressure Equipment
Directive (PED).
Do not walk on the roof panels of units installed inside or
outside.
Only sufficiently qualified personel is allowed to work on
(electrical) components. All power supplies to the unit
must be disconnected, before any work can be carried out.
Switch off the supply voltage using the main disconnect
switch.
CAUTION: Electric heaters have a separate supply and
must be switched off separately.
If work lighting is required, use only lighting with 24 V
maximum.
Use of electical equipment with a voltage above 48 V is
only permitted if an earth leakage switch is installed that
complies with local and national regulations.
1.2 - Applications
The AHU is designed for the movement and conditioning
of air, unless otherwise agreed during the design stage.
3
Rotating parts
Opening the fan door
This pictogram indicates that there are rotating parts
behind this access cover, door or panel which may cause
injury. The components that include rotating parts are the
fan and heat recovery wheel. If there are special customerspecific components behind doors, access covers or panels
that include rotating parts and pose a potential risk, this is
also indicated by this pictogram.
This pictogram is positioned on the outside of the door or
access cover of the fan assembly. This pictogram warns that
the fan must be switched off and deenergised for a
minimum of two minutes before the door or access cover
is opened.
! waarschuwing !
Hot surfaces
This pictogram indicates that there are components behind
this access cover, door or panel that can cause serious
burns when touched.
The surfaces that may be hot are the heater surfaces. If
there are special special customer-specific components
behind doors, access covers or panels that have hot
surfaces and pose a potential risk, this is also indicated by
this pictogram.
! warning !
Voor openen deuren, ventilator
uitschakelen, spanningsloos
maken en uit laten lopen
(minimaal 2 minuten).
Before opening the doors,
switch off and deenergise the
fan and allow it to run down
(minium 2 minutes).
Transportbeugels
Verwijder transportbeugels
voor opstarten ventilator.
Transport brackets
Remove transport brackets
before starting up the fan.
! attention !
! Gefahr !
Avant ouverture des portes, le
ventilateur doit être déconnecté
et avoir eu le temps, de
s’arrêter completement
(2 minutes minimum).
Vor Öffnen der Türen den
Ventilator abschalten,
spannungslos
machen und zum
Stillstand kommen lassen
(mindestens 2 Minuten warten).
Fixations de transport
Retirer les fixations de transport
avant la mise en route.
Transportsicherungen
Transportsicherungen vor der
Inbetriebnahme demontieren.
200034906
Other warning labels
Electrical voltage
This pictogram indicates that there are electrical
components behind this access cover, door or panel that
may be dangerous for the user/installer. Only qualified
personnel is permitted to carry out work on these
components. For this work the regulations of the applicable
international (a.o. IEC 61557, EN 50110 and ES 59009) and
national (e.g. BS 7671) standards must be observed. The
pictogram is attached to the access cover for the electric
heater control box.
! waarschuwing !
! warning !
Vervuilde filters zijn brandbaar.
Polluted filters are inflammable.
! waarschuwing !
! warning !
Les filtres encrassés peuvent
être inflammables.
Verschmutzte Filter sind leicht
entflammbar.
! waarschuwing !
! warning !
Na het uitzetten van de
elektrische verwarmer moet de
ventilator nog
minimaal 5 minuten draaien.
After switching off the electric
heater the fan must continue
to run for at least 5 minutes.
! waarschuwing !
! warning !
Après la déconnexion de la
résistance électrique, le ventilateur
doit continuer à tourner
pendant au moins 5 minutes.
Nach Abschalten der
Elektroheizung muss der
Ventilator noch mindestens 5
Minuten weiterlaufen.
Central data
This label contains the data for the AHU, such as order
number, position number etc. If present, the label is
normally located on the access cover or the door of the fan
assembly.
4
200034908
CAUTION: All doors and access covers must be closed
before starting up the AHU.
Lifting and transport
2.2 - Unloading by crane
AHU delivered on transport pallet must be lifted by straps
as shown in the illustration.
An instruction is attached to the AHU that describes the
procedures that must be followed for lifting and transport.
The following chapter contains further details.
1.4 - Disposal of parts/materials
• T
he packaging material must be disposed of in a
respon-sible manner and in accordance with local
regulations.
• Components that are replaced, must be disposed of
as described above.
AHU delivered with legs must be lifted by straps secured
to the legs as shown in the illustration.
2 - Transport
The air handling unit – AHU - is delivered as one section
or in several sections, which are to be assembled on site.
The AHU is delivered on transport pallets, legs or on a
base frame. Loading and unloading as well as transport on
the site is possible by fork-lift truck or by crane using
suitable lifting straps.
2.1 - Unloading by fork-lift truck
The forks of the truck must be sufficiently long to avoid
any damage to the AHU underside.
2.3 - Lifting a unit with a base frame
The holes in the base frame are to be used for the placing
of lifting bars. Make sure that the bars used are strong
enough to lift the loads in question and that the straps do
not touch and damage the top of the unit. Keep the straps
away from the top of the unit by bars as shown in the
illustration.
5
2.4 - Roof unit with bitumen roof
Avoid damaging the drip nose profiles along the bitumen
roof. Keep the protection profiles of Styrofoam on the unit
until the installation has been completed. If the unit is
lifted by straps, the straps must be kept away from the drip
nose profiles by bars.
2.5 - Roof unit with steel roof
For units with steel plate roof, the steel plates are delivered
uninstalled on a separate pallet. Do not place any parts
and do not step or walk on the plates.
3 - INSTALLATION
3.1 - Installation of unit and ducts
Important: When positioning the unit, it is recommended
that a distance which is the same as the unit’s width is
kept free for service and inspection in front of the unit.
3.1.1 - Adjustable feet under legs or base frame
Adjustable feet are provided in a carton box placed inside
the unit.
2.6 - Pre-assembly storage
The AHU must be protected from the weather and impact.
Packaging must be removed and the unit covered with
tarpaulin or similar materials. In order to minimize
condensation, sufficient air circulation must be ensured
between the covering and the unit.
3.1.2 - Supporting surface
The surface beneath the unit must be level and even. The
surface must be able to withstand the load of the AHU.
In the case of lightweight construction or especially
sensitive areas, the unit should be placed on a vibration
absorbing foundation with the necessary properties.
Attention: Duct work must be sound insulated and must
not be mounted directly on beams, trusses or other critical
building parts.
6
3.1.3 - Base frame assembly
The base frame is delivered unassembled and has to be
assembled on the site before it is possible to position and
assemble the various sections of the AHU. Assembly of the
base frame is illustrated on 4 pages in a manual that is
always in a plastic folder and is attached to one of the large
base frame parts. This manual is available on the site
among the base frame parts.
There are two types of base frames:
1. 150 mm high base frames
2. 250 mm high base frames.
There are 4 different manuals and each of them illustrates
the assembly of the 4 different types of base frames:
1. Manual about the 150 mm high base frames for
AHUs in the sizes from 39MQ 10 to 39MQ 40. The
name of this manual is – Base frame 150 39MQ 10
- 40
2. Manual about the 150 mm high base frames for
AHUs in the sizes from 39MQ 50 to 39MQ 150.
The name of the manual is – Base frame 150
39MQ 50 - 150
3. Manual about the 250 mm high base frames for
AHUs in the sizes from 39MQ 10 to 39MQ 40. The
name of the manual is – Base frame 250 39MQ 10
- 40
4. Manual about the 250 mm high base frames for
AHUs in the sizes from 39MQ 50 to 39MQ 150.
The name of the manual is – Base frame 250
39MQ 50 - 150.
Base frame without drip nose profile
Base frame with drip nose profile (accessory)
A local installer must deliver and install further protection
and maybe insulation of the base frame. Material for
protection and insulation is not delivered by Carrier. See
the illustration below with an example of insulation,
protection by a steel plate and the lower part of the steel
plate covered by bitumen.
Example of 150 mm high base frame for AHUs in the
size from 39MQ50 to 39MQ150
3.1.5 - Joining the AHU sections
Mount adjustable feet with a distance of maximum 1500
mm between each foot under the base frame. The base
frame can now be levelled by the adjustable feet. The next
step is to place and assemble AHU sections on the base
frame.
3.1.4 - Protection of base frame under unit installed
outdoors
Units for outdoor installation are usually delivered on
base frames, and the units are built without drip nose
profile between unit and base frame, but the units are
available with drip nose profile as an accessory. The drip
nose profile is made of aluminum and is mounted on the
base frame. See the illustration below. Adjustable feet are provided in a carton box placed inside
the unit.
The sections must be placed on the base frame and if the
unit is delivered with 100 mm legs, the sections must be
positioned directly opposite each other.
Ensure that the factory-fitted rubber sealing is
undamaged
2. The sections are then to be positioned directly
opposite each other. If the sections are built with
legs, the adjustable feet are used to get the sections
parallel and at the same height.
1.
7
3. P
ress the sections hard together so that the rubber
profiles are so flat that the iron frames of the two
sections are joined.
3.
Mount the air distributor plate between 2 nuts at
the end of the extension bolts and check that the
bent edges of the distributor plate are pointing in
the same direction as the air flow.
3.1.7 - Fitting the ductwork
4.
The sections are then to be locked permanently
together with the black plastic-coated Disc-Locks.
The Disc-Locks are delivered in a carton box
placed inside the unit. Place each Disc-Lock over
the 2 factory fitted locking pins. The discs and
locking pins are not reliable for pulling the sections
together. They are only sufficient for keeping the
sections well together, so just turn each disc gently
with the supplied Allen key. Use a sequence where
each disc is tightened with only one click at a time.
3.1.6 - Installing an air distributor
Air distributor – only for units with centrifugal fans. If an
air distributor is to be installed at the end of an AHU, the
distributor is always supplied uninstalled.
1. S
crew the extension bolts into the threaded bushes
at the fan outlet.
2. T
ighten the nuts.
8
Flexible duct connections between AHU and ductwork
must always be installed. Be sure that flexible duct
connections are almost fully stretched. (Flexible
connections are accessories and they are placed inside the
unit). At the fan outlet on a centrifugal fan, the duct size
should be as close to the outlet size as possible. Avoid
blockage and turbulence at the fan outlet.
3.2 - Installation of steel roof
3.2.1 - Overview
• M
ount rails A1, B2, C3, D4, E5 on the unit for
support of trapezoidal roof plates (mount also rails
Y and Z on units of the size 30 and on units that
are larger than size 30 longitudinally at the centreline of the units).
• Place foam bands – P – on the horizontal rails A1,
B2, C3 and D4 for support of roof plates.
• Calculate overhang of the roof at both ends of the
unit and mount roof overhang profile – G1 on the
first trapezoidal roof plate – F1 before the roof
plate is mounted.
• Place and mount roof plates F1, F2, F3 and so on.
• Remember foam bands on the side laps between
roof plates to prevent rainwater from passing
through.
• Place roof overhang profile – G5 at the other end
of the unit before the last roof plate is mounted.
• Mount sides and corners on the roof.
• Apply sealing where plates are joined to ensure
water resistance - even in stormy weather.
3.2.2 - Mount rails. Units of size 10, 15, 20, and 25
Squeeze sealant in sufficient quantity between the
underside of the rails A1, B2, C3, D4, E5 and the horizontal
top side of the unit before the rails are mounted. This
means that the rails are standing on sealant to achieve the
tightest connection between rails and unit to prevent
rainwater from passing under the rails and into the unit.
Mount the rails A1 and B2 on the front side (the side with
the inspection doors) – use the simple self drilling screws
without the sealing washer – see the illustration of the
screw below.
Mount the lower rails C3 and D4 on the back side of the
unit.
Note: Rail D4 fits into the rail C3, and this offers the
advantage that the rail D4 can be slid inside the rail C3
to adjust the length of rail D4 accurately to the length of
the unit. In this way it is not necessary to spend time and
effort on cutting the rail D4.
Mount vertical rail – E5 - with the roof slope at each end of
the unit
It is important to place a screw in each hole – even
though the number of holes for screws seems to be very
large, a screw in each hole is necessary as the stress on the
roof during stormy weather is extremely high.
3.2.3 - Mount rails. Units of size 30 and units larger than
size 30
Note: Rail B2 fits into the rail A1, and this offers the
advantage that the rail B2 can be slid inside the rail A1
to adjust the length of rail B2 accurately to the length of
the unit. In this way it is not necessary to spend time and
effort cutting the rail B2.
On units of size 30 and on units that are larger than size 30,
rails A1, B2, C3, D4, E5 must be mounted on the unit for
support of trapezoidal roof plates, but also rails Y and Z
must be mounted longitudinally at the centre-line of the
units to hold the trapezoidal roof plates.
9
Squeeze sealant in sufficient quantity between the
underside of the rails A1, B2, C3, D4, E5 and the horizontal
top side of the unit before the rails are mounted. This
means that the rails are standing on sealant to achieve the
tightest connection between rails and unit to prevent
rainwater from passing under the rails and into the unit.
Mount the rails A1 and B2 on the front side (the side with
the inspection doors) – use the simple self drilling screws
without the sealing washer – see the illustration of the
screw below.
Notice that rail Z fits over the lower rail Y, and this offers
the advantage that the rail Z can be slided on the rail Y
to adjust the length of rail Z accurately to the length of
the unit. In this way it is not necessary to spent time and
effort on cutting the rail Z.
It is important to place a screw in each hole – even
though the number of holes for screws seems to be very
large, a screw in each hole is necessary as the stress on the
roof during stormy weather is extremely high.
3.2.4 - Roof overhang along the long sides of the unit
Note: Rail B2 fits into the rail A1, and this offers the
advantage that the rail B2 can be slid inside the rail A1
to adjust the length of rail B2 accurately to the length of
the unit. In this way it is not necessary to spend time and
effort cutting the rail B2.
Mount the lower rails C3 and D4 on the back side of the
unit.
Note: Rail D4 fits into the rail C3, and this offers the
advantage that the rail D4 can be slid inside the rail C3
to adjust the length of rail D4 accurately to the length of
the unit. In this way it is not necessary to spend time and
effort cutting the rail D4.
Mount vertical rail – E5 - with the roof slope at each end of
the unit.
Mount the rails Y and Z on the unit with the centre-line of
the rails exactly over the centre-line of the unit. It is
longitudinal on the middle of the units to hold the
trapezoidal roof plates.
10
The roof plates are longer than the width of the unit to
ensure sufficient overhang along the sides of the unit.
• The overhang is 100 mm along each side of the
smallest unit – size 10.
• The overhang is 150 mm along each side of the
units – size 15, 20, 25.
• The overhang is 175 mm along each side of the
biggest units – including size 30.
3.2.5 - Calculation of the overhang at the ends of the unit.
Mount overhang profile – G1
The roof must be between 200 and 400 mm longer than the
length of the unit to secure a roof overhang between 100
mm and 200 mm at the each of the 2 ends of the unit, and
the length of this overhang must be calculated before the
first roof plate is mounted.
The unit is delivered with 2 similar overhang profiles - G1
and G5 - one for each end of the roof. Mount one of the 2
roof overhang profiles – G on a trapezoidal roof plate. Use
the self drilling, painted screws with sealing washers - W
- see the illustration.
Note: Foam bands - P – are necessary between the
overhang profile G1 and the roof plate F1. See the
illustration.
The total cover width of the trapezoidal roof plates always
changes with the pitch of 207 mm between the trapezoidal
ribs, making up a total length of the complete roof of - for
example 2070 mm, 2277 mm, 2484 mm and so on. We call
this length of the total roof for RL and we call the total
length of the complete unit for AL. The trapezoidal roof
must always be longer than the unit, to obtain a reasonable
overhang called – XX - of the roof at both ends.
Self drilling, painted screws supplied with sealing washer
for the mounting of the trapezoidal plate to the roof
overhang profile.
In the table below you will find 40 different lengths of
roofs (always changing with the 207 mm) and the lengths
of units that are ideal for each of the 40 alternative roof
lengths.
Measure the total length – AL of the unit – for example 5
metres between the 4982 and 5182 mm mentioned in the
table below.
AHU length AL
Roof length RL
AHU length AL
2277
4775 – 4975
1670 – 1870
2070
2084 – 2284
2484
1877 – 2077
2291 – 2491
2498 – 2698
2705 – 2905
2912 – 3112
3119 – 3319
3326 – 3526
3533 – 3733
3740 – 3940
3947 – 4147
4154 – 4354
4361 - 4561
7466 – 7666
7673 – 7873
7880 – 8080
8087 – 8287
8294 – 8494
8501 – 8701
2691
2898
3105
3312
3519
3726
3933
4140
4347
4554
4761
7866
8073
8280
8487
8694
8901
Roof length RL
4568 – 4768
4968
4982 – 5182
5382
5189 – 5389
5396 – 5596
5603 – 5803
5810 – 6010
6017 – 6217
6224 – 6424
6431 – 6631
6638 – 6838
6845 – 7045
7052 – 7252
5175
5589
5796
6417
6624
6831
7038
7245
7452
8915 – 9115
9315
9329 – 9529
9536 – 9736
9743 – 9943
Place foam bands P between profiles A1, B2, C3, D4 and
roof plates.
6210
7659
9122 – 9322
3.2.6 - Foam bands between rails and roof plates – mount
roof plates
6003
7259 - 7459
8708 – 8908
The mentioned length of roof – RL - for this length of unit
is 5382 mm (the delivered trapezoidal plates can be
combined to this length - RL = 5382 mm). 5382 mm minus
5000 mm is 382 mm overhang for both ends, and 382/2 mm
= 191 mm is the overhang for each end. Place the
trapezoidal roof plate F1 with the roof overhang profile G1
on rail E with an overhang of 191 mm.
9108
9522
9729
9936
10143
The trapezoidal roof plates are mounted with the self
drilling, painted screws supplied with sealing washer.
11
3.2.7 - Foam bands between roof plates
Mount the self adhesive foam band – O - on the
underlapping rib for water resistant and effective sealing
due to the small slope of the roof.
3.2.8 - Mount roof plates – some of them are overlapping
by 2 ribs
3.2.9 - Mount overhang profile – G5 on the other end of
the unit
The width of each plate is always 1.035 mm and some of
the plates have to overlap by 2 ribs to achieve the optimal
total length of the whole roof — see the illustration above.
When the last trapezoidal plate (in this example F5) has
been placed on the unit, the second roof overhang profile
G5 must be pushed under the trapezoidal roof plate and
mounted with the self drilling, painted screw with sealing
washer. Mounting must be similar to the mounting of roof
overhang profile under the trapezoidal roof plate at the
other end of the unit.
12
3.2.10 - Mount side profiles and corners along the edges of
the roof to protect persons
Profiles N and O with the rectangular holes are for the
long and lower side of the roof because rain can escape
through the holes. Mount the profiles type N first and the
profile O last because the profile O goes over the profile N.
Mounted in this order, the profile O can match the end of
the roof and the surplus length of the profile O will just
cover part of the previous profile N. Mount the profiles L
and M along the long and higher front side of the roof.
Mount the 4 protection corners.
3.2.11 - Apply sealing on plate joints to ensure water
resistance
Finish installation of the steel roof by sealing all plate
joints with silicone to prevent rainwater from passing into
the unit. See examples below of joints to be sealed.
13
3.3. - Electrical installation and plumbing
3.3.1.1.3 - Rotary heat exchanger with variable speed
Pipes and cables must not obstruct the inspection doors
and components which can be extracted from the unit.
In special circumstances, when it is impossible to open the
doors fully, the doors can be taken off by removing the
hinge pins.
3.3.1 - Electricity for motors and electrical heater batteries
in units without cabinet
Connection to the controller according to the wiring
diagram printed on the cover of the control box.
Note: Inside the control box there is a test button - “Test
on/off”.
3.3.1.1.4 - Electrical heater battery
Check carefully that the AHU is in fully accordance with
all requirements in the User Manual.
Connection to the electrical heater battery according to
the wiring diagram that is placed behind the inspection
door of the battery.
Note: To ensure sufficient cooling of the heating elements,
the fan must have an appropriate after-run when power to
the electrical heating has been cut off.
3.3.1.1.1 - Damper motors
3.3.1.1.5 - Connection of motors for fans
The size of the damper motors must comply with the
torque required by the dampers. In order to reduce the
required torque, the start of the fan should be delayed until
the dampers are fully opened.
39MQ 10, 39MQ 15, 39MQ 20, 39MQ 25 and 39MQ 30
units have removable fans/motors for easy installation and
service. The electrical cable must therefore be sufficiently
long to enable the motors to be pulled out of the unit for
service. When the fan is running, the extra cable must be
wound up and fixed to keep clear of rotating parts.
3.3.1.1 - Before start-up
3.3.1.1.2 - Rotary heat exchanger with constant speed
Electrical connection to the 3-phased gear motor must be
in accordance with local statutory requirements. Connect
the motor in accordance with the motor data printed on
the motor by the manufacturer.
Two-speed motors with separate windings are to be
connected as illustrated below with low speed to the left,
high speed to the right.
14
One-speed motors are to be connected as illustrated below
with low speed to the left or high speed to the right.
Two-speed motors with Dahlander windings are to be
connected as illustrated below with low speed to the left,
high speed to the right.
3.3.1.1.6 - Frequency converters
Wiring must comply with local statutory requirements and
according to local restrictions based on the EMC Directive.
3.3.2 - 39MQ-units – delivered as one assembled
3.3.3 - Plumbing – Pipes for water and/or refrigerant,
valves and drains
3.3.3.1 - Pipe connection to coils
Coils with 3 rows or more must always be connected in
counter flow to the airflow (see the illustration below).
All external components are stored in a carton box placed
on the unit. Outdoor versions of 39MQ units with cabinet
are delivered with cabinet inside the unit. All internal
components are cabled and connected to terminals and
fuses in the cabinet and cable entries for cables from the
external components are placed in the unit-front below the
cabinet on those units.
3.3.2.1 - Step 1: Install external components
External components could be: The supply air temperature
sensor, valve motor(s), sensor for water temperature in the
heating coil (if water heating coil was requested),
circulation pump (Carrier does not deliver the pump, but
terminals are present in the cabinet for a pump with a one
phase motor), 2 air pressure transmitters if it is a solution
for constant pressure in the ducts, a repeater (if requested).
Not all components are delivered with every 39MQ unit.
See the order confirmation with exact information about
and description of the accessories for this unit.
See the User Manual with the description of all accessories
available for 39MQ units.
Coils for steam must be connected with the steam inlet at
the top and condensate water outlet at the bottom. (see the
illustration below).
3.3.2.2 - Step 2: Install cables from external components
Cables must not obstruct the inspection doors and prevent
extraction of fans as well as rotary heat exchangers from
the sizes 10, 15, 20, 25 and 30. Cables are not included from
Carrier.
3.3.2.3 - Step 3: Pull the cables through the cable entries to the
integrated cabinet
The section with the cabinet is provided with cable entries
in different sizes.
Pull the cables through the preinstalled cable entries.
15
Cooling coil for direct expansion must be connected with
expansion valve at the top and the suction outlet at the
bottom. (see the illustration below).
Run-around coils – do not connect galvanized pipes and
fittings.
Note: Glycol must be without additives and auto glycol
must not be used.
3.3.3.2 - Avoid weight and stress on coils and coil connection
pipes
The coil and pipes from the coil are not constructed to
withstand the weight and stress from valves, circulation
pumps, long pipes and insulation of pipes. The system must
be supported carefully in rigid bearings to roof, floor and
walls.
3.3.3.3 - Valves
To avoid freeze ups and frost bursts of pipes, sufficient
insulation is recommended and installation of heating
between the pipes and the insulation could even be
necessary (insulation and heating is not included).
P
Negative pressure P (Pa)
H1 Minimum
H2
500 Pa
100 mm
40 mm
750 Pa
150 mm
55 mm
1.000 Pa
190 mm
70 mm
P
Positive pressure P (Pa)
H1 Minimum
H2
500 Pa
90 mm
65 mm
750 Pa
120 mm
90 mm
1.000 Pa
150 mm
120 mm
Connection pipes on heating- and cooling coils are
provided with external threat. The valves and valve motors
are stored in a carton box placed on the unit, if the unit
was ordered with valves and valve motors. Connect valves
to the terminals according to wiring diagrams.
3.3.3.4 - Draining and water trap
Drip trays to collect condensate water are installed under
plate heat exchanger and cooling coil. Each drip tray is
provided with a drainage outlet. A water trap is included in
the delivery to ensure escape of water from the tray. Water
trap(s) is(are) stored in a carton box placed on the unit.
The closing level of the water trap must be estimated
correctly to ensure safe escape of the water (see the
illustration and estimate the minimum closing level
according to the table).
A water trap is necessary on each drainage outlet and the
pipe diameter of the water trap and sewage system must be
identical to the pipe diameter of the drainage outlet from
the tray.
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3.4 - Protection measures
See the description in the User Manual.
3.5 - Dismantling and disposal
Remember to disconnect all electrical and plumbing
connections before dismantling. All fluids must be drained
and emptied from the unit which must then be disposed of
in accordance with the current local regulations. After
dismantling of the unit, the sections must be taken apart
and the pieces placed into groups according to the material
type. The materials must then be delivered to an approved
site. Further information is available in maintenance
instructions.
3.6 - General
Further information is available in User Manual.
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www.eurovent-certification.com
Order No.: 13961, 02.2014. The manufacturer reserves the right to change the specification without prior notice.
The front cover photos are for illustration purposes only and not contractually binding.
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Printed in the European Union.