Gravity Centre; Location And Assembling; Location Designation; Sound Level - Carrier 48EN Installation, Operation And Maintenance Instructions

Packaged rooftop units
with integrated gas burner

Gravity centre

Z
X
Y
Centre of gravity (mm)
48EN/EH Assembly
X
MO 1062
241
MS 1127
MA / MC0 1193
MO 1062
321 MS 1127
MA / MC0 1193
MO 1062
361 MS 1127
MA / MC0 1193
MO 1100
242 MS 1165
MA / MC0 1223
MO 1100
322 MS 1165
MA / MC0 1223
MO 1100
362 MS 1165
MA / MC0 1223
M0 1024
420
MS 1085
MA / MC0 1186
M0 1024
485
MS 1085
MA / MC0 1186
M0 1024
540
MS 1085
MA / MC0 1186
M0 1024
600 MS 1085
MA / MC0 1186

The unit weight includes the burner installed as standard which matches the
heaviest one amongst those available.

Weight
(kg)
Y Z
1310 830 1497
1355 832 1578
1385 804 1705
1310 830 1581
1355 832 1662
1385 804 1789
1310 830 1717
1355 832 1798
1385 804 1925
1300 845 1723
1345 847 1805
1386 776 1925
1300 845 1806
1345 847 1888
1386 776 2008
1300 845 1942
1345 847 2024
1386 776 2144
2300 794 2360
2353 804 2458
2469 746 2724
2300 794 2402
2353 804 2500
2469 746 2766
2300 794 2459
2353 804 2557
2469 746 2823
2300 794 2512
2353 804 2610
2469 746 2876
6. L
OCATION AND ASSEMBLING

Location designation

Before moving the unit, make sure that all panels are fastened in place.
Lift and lower with care.
When choosing the location, in any way the selected fashion, the
following precautions have to be taken into consideration:
- It is mandatory to comply with norm EN 378-3 on Safety and
Environmental Requirements. Part 3: "In situ" installation and
protection to people.
- The area where the unit will be located must be perfectly accessible
for cleaning and maintenance operations (check minimum free space
for maintenance). Leave enough space for air circulation around the
unit.
- Foresee appropriate damping devices throughout the installation to
ensure that noise and vibration transmission is avoided (refer to the
section "Anti-vibration Anchoring").
- Check that the structure can withstand the weight of the unit.
- Since the unit is designed to work outdoors, some specifi c installation
norms must be followed:
• The unit will be located on the roof of the premises. If it is foreseen
that it will work more on heating than on cooling, it is preferable to
direct the coil towards the sun. If little work on heating is foreseen,
choose North direction.
• Avoid placing obstacles in the air outlet or return. No obstacle may
impede the air aspiration into the coils. Do not fi x the outdoor coil
side in the predominant wind direction.
• Do not install the unit in a closed enclosure or in conditions that
originate air recirculation.
• The chosen location must not fl ood and must be above the average
height the snow reaches in that region.
• All models can be installed on the fl oor or on a brick frame or steel
profi le (see optional preassembly frames in chapter 11). In any
case, check that the unit is perfectly level.

Sound Level

These units are designed to work with a low acoustic level. In any case,
in the design of the installation the outdoor environment, the kind of
building for the noise transmitted in the air and the solid elements for the
vibration transmission must be taken into consideration for the acoustic
radiation. If necessary, commission a study by an acoustic technician.
Sound power level

48EN/EH 241 321 361
Total dB(A) 90 90 91
Note: The sound power spectrums can be consulted in the technical brochure
for the 48EN/EH series.
Sound pressure level

Measurement conditions: in free fi eld, measured at a distance of 5
metres, directivity 2 and at 1.5 metres from the ground.
48EN/EH 241 321 361
Total dB(A) 63 63 64
Note: The sound pressure level depends on the installation conditions and, as such,
it only indicated as a guide. Values obtained according to the ISO 3744 standard.
242 322 362 420 485 540 600
88 88 89 94 95 95
242 322 362 420 485 540 600
61 61 62 67 67 67
95
67
7