About The Product; Lifting Method; Installation Of Unit And Service Space; Installation - Mitsubishi Electric CITY MULTI PWFY-P36NMU-E-BU Installation Manual

2. About the product

Warning:
Do not use refrigerant other than the type indicated in the manuals
provided with the unit and on the nameplate.
during use, during repair, or at the time of disposal of the unit.
- It may also be in violation of applicable laws.
- MITSUBISHI ELECTRIC CORPORATION cannot be held responsible for mal-
functions or accidents resulting from the use of the wrong type of refrigerant.
This unit uses R410A-type refrigerant
ing conventional refrigerant because the design pressure in systems using
3. Speci cations
Model
Sound level
Refrigerant
Net weight
R410A MPa [psi]
Design pressure R134a MPa [psi]
Water MPa [psi]
Total capacity
Connectable
outdoor unit Model
Outdoor temp.
Temp. range of
heating
Inlet Water temp.
Outdoor temp.
Temp. range of
cooling
Inlet Water temp.
4. Con rmation of parts attached
① Strainer ② Heat insulation material ③ Expansion joint × 2 (PWFY-P72NMU-E2-AU) ④ Washer × 2 ⑤ Flow switch (PWFY-P36/72NMU-E2-AU) 6 Buffer material

5. Lifting method

Caution:
Be very careful when carrying the product.

6. Installation of unit and service space

6.1. Installation

[Fig. 6.1.1] (P.2)
Ⓐ 4-ø14 [9/16] (Anchoring hole)
Bases
base is unstable, reinforce with a concrete base.
stallation.
vibration stand on the base of the unit is recommended.

7. Water pipe installation

serve the following precautions during installation.
oughly let them dry.
it from freezing.
-
PWFY-P36NMU-E-BU
44dB<A>
4.15 MPa [601 psi]
3.60 MPa [522 psi]
1.0 MPa [145 psi]
R2 series, WR2 series
-
-
Ⓑ Top view
-
-
-
other types of refrigerant cannot be used with the systems using R410A. Re-
conventional refrigerating machine oil and refrigerant. This chlorine will dete-
riorate the refrigerant machine oil in the new equipment. The existing piping
must not be used as the design pressure in systems using R410A is higher
than that in the systems using other types of refrigerant and the existing
pipes may burst.
PWFY-P36NMU-E2-AU
29dB<A>
-
4.15 MPa [601 psi]
-
1.0 MPa [145 psi]
50~100 % of outdoor unit capacity
Warning:
Be sure to install unit in a place strong enough to withstand its weight.
Any lack of strength may cause unit to fall down, resulting in a personal
injury.
ave installation work in order to protect against earthquake.
Any installation de ciency may cause unit to fall down, resulting in a
personal injury.

6.2. Service space

(All servicing can be performed from the front of the unit)
[Fig. 6.2.1] (P.2)
Model a
PWFY-P36NMU-E-BU 400 [15-3/4]
PWFY-P36NMU-E2-AU 400 [15-3/4]
PWFY-P72NMU-E2-AU 400 [15-3/4]
Ⓐ Piping space (right side)
Ⓒ Service space (front side)
circulating at all times. If that is not possible, purge the water out of the pipes
completely.
PWFY-P72NMU-E2-AU
29dB<A>
-
4.15 MPa [601 psi]
-
1.0 MPa [145 psi]
Y series, WY series
b c
300 [11-13/16] 600 [23-5/8]
300 [11-13/16] 600 [23-5/8]
300 [11-13/16] 600 [23-5/8]
Ⓑ Top view
9