Panasonic Inverter Air Conditioner R410A Technical Data And Service Manual

1-65
1. Specifications
3. SELECTING THE INSTALLATION SITE
3-1. Outdoor Unit
AVOID:
 
heat sources, exhaust fans, etc. (Fig. 1-3)
 
damp, humid or uneven locations
DO:
choose a place as cool as possible.
 
choose a place that is well ventilated and outside
air temperature does not exceed maximum 115°F 
constantly.
allow enough room around the unit for air intake/ 
exhaust and possible maintenance. (Fig. 1-4)
 
use lug bolts or equal to bolt down unit, reducing 
vibration and noise.
if cooling operation is...

1-66
1. Specifications
3-2. Air-Discharge Chamber for Top Discharge
Be sure to install an air discharge chamber in the
field when:
 
it is difficult to keep a space of min. 20 between
the air discharge outlet and an obstacle.
 
the air discharge outlet is facing a sidewalk and
discharged hot air may bother passers-by.
Refer to Fig. 1-7.
3-3. Installing the Unit in Heavy Snow Areas
In locations with strong wind, snow-proof ducting
should be fitted and direct exposure to the wind
should be avoided as much...

1-67
1. Specifications
3-5. Dimensions of Wind Ducting
Reference diagram for air-discharge chamber ( eld supply)
For U-26PE(S)1U6 / U-36PE(S)1U6 unit
ƒAir discharge chamber
„Air discharge chamber (base)
For U-42PE(S)1U6 unit
ƒUnit front, air discharge chamber
„Unit left side, air discharge chamber
…Unit right side, air discharge chamber
†Reinforcement brackets, 4 locations
Note: In snowy regions, if there is concern that snow may enter the air discharge










chamber, remove the base of the...

1-68
1. Specifications
Dimensions of Outdoor Unit with air-discharge chamber ( eld supply)
U-26PE(S)1U6 / U-36PE(S)1U6 unit
U-42PE(S)1U6 unit
13-3/8
2-17/32
21-13/161/2 6-11/16
25-31/324-5/16
2 / 1 2 / 1
14-31/32
15-15/16 19/322
3 / 5 2 2 3 / 5 2
13/32
Wind direction
Wind
direction
Wind direction
Wind direction
Wind direction
37
30-23/32
23/32
9-7/8
21-5/8 4-1/16
5-3/16
Wind direction
Unit: inch
4-5/16
25-31/32 6-11/16
1/2 1/2
13-3/8
15-15/16 14-31/32 13/32 19/3225/32 25/32
1/2
2-11/36 21-13/32
11 - 1 3...

1-69
1. Specifications
Reference diagram for air-discharge chamber ( eld supply)
U-26PE(S)1U6 / U-36PE(S)1U6 / U-42PE(S)1U6
Required space around outdoor unit
If the air discharge chamber is used, the space shown below must be secured around the outdoor unit.
If the unit is used without the required space, a protective device may activate, preventing the unit from operating.
(1) Single-unit installation
(2) Multiple-unit installation
   Installation in lateral rows
   Installation in front-rear rows...

1-70
1. Specifications
3-6. Dimensions of Snow Ducting
Reference diagram for snow-proof vents ( eld supply)
For U-26PE(S)1U6 / U-36PE(S)1U6 unit
ƒUnit top, snow-proof vent
„Unit left side
…Unit right side
†Unit reverse side
‡Unit reverse side
ˆUnit sides, reinforcement brackets for snow-proof vent
For U-42PE(S)1U6 unit
ƒUnit top, snow-proof vent
„Unit left side
…Unit right side
†Unit reverse side
‡Unit reverse side
ˆUnit sides, reinforcement brackets for snow-proof vent
25-13/32
17-15/32...

1-71
1. Specifications
Dimensions of outdoor unit with snow-proof vents ( eld supply)
U-26PE(S)1U6 / U-36PE(S)1U6 unit
U-42PE(S)1U6 unit
11-57/64
16-47/6415-15/16 14-61/64 25/64 19/3225/32
30-5/64
25-25/64
7-3/64
3/4 30-45/64
37-1/64 Wind direction
Wind direction Wind direction
Wind direction
Wind direction
Wind direction
Unit: inch
11-57/64
28-13/16
Wind direction
Wind direction
Wind direction
Wind direction
Wind direction Wind direction
48-27/64
47-19/32
37-1/64
24-7/8
15-15/1614-61/64 25/64 19/3225/32...

1-72
1. Specifications
Reference diagram for snow-proof vents – 1
Space requirements for setting – (1)
U-26PE(S)1U6 / U-36PE(S)1U6 / U-42PE(S)1U6
] t i n u   f o   t n o r f   e h t   o t   e l c a t s b O [ ] t i n u   f o   r a e r   e h t   o t   e l c a t s b O [
: n e p o   s i   p o T     : n e p o   s i   p o T  
 Top is blocked by an obstacle:
Top is blocked by an obstacle:
Unit: inch
Min. C
Min. E
Min. FMin. E Min. EMin. B
Min. A
Min. D Min. G
(1) Single-unit installation
(3) Multiple-unit...

1-73
1. Specifications
Reference diagram for snow-proof vents – 2
Space requirements for setting – (2)
U-26PE(S)1U6 / U-36PE(S)1U6 / U-42PE(S)1U6
[Obstacles to the front and rear of unit]
 The top and both sides must remain open. Either the obstacle to the front or
    the obstacle to the rear must be no taller than the height of the outdoor unit.
[Installation in front-rear rows]
   The top and both sides must remain open. Either the obstacle to the front or the obstacle
    to the rear must be no...

1-74
1. Specifications
4. HOW TO INSTALL THE OUTDOOR UNIT
4-1. Installing the Outdoor Unit
 Use concrete or a similar material to create the base, 
and ensure good drainage.
 Ordinarily, ensure a base height of 2. or more. If a 
drain pipe is used, or for use in cold-weather regions, 
ensure a height of 6. or more at the feet on both sides 
of the unit. (In this case, leave clearance below the unit 
for the drain pipe, and to prevent freezing of drainage 
water in cold-weather regions.)
 Refer to the...