Mitsubishi Heavy Industries SRRM40HENG-L, Handbook, Page: 85 / 1106

83
SRK-H
Item
Model
SRK328HENF-L2 SRK408HENF-L2
Cooling – –
High pressure MPa(kgf/cm
2
)
Heating 1.67~1.86 (17 ~ 19) 1.76 ~ 1.96 (18 ~ 20)
Cooling 0.44 ~ 0.54 (4.5 ~ 5.5) 0.39 ~0.49 (4.0 ~ 5.0)
Low pressure MPa(kgf/cm
2
)
Heating – –
Cooling 12 ~ 16 12 ~ 16
Heating 18 ~ 22 18 ~ 22
Cooling 6.9/6.9 6.4/6.4
Running current (A)
Heating 6.1/6.1 6.5/6.5
(4) Insulation of connecting portion
1) Cover the connection portion of the refrigerant piping with
the pipe cover and seal them.
If neglecting to do so, moisture occurs on the piping and
water will drip out.
2) Finishing and fixing
a) Tie up the piping with wrapping tape, and shape it so
that it conforms to which the pipe is attached.
b) Fix them with clamps as right figure.
Additional refrigerant charge
When refrigerant piping exceeds 7.5m conduct additional refrigerant charge after refrigerant sweeping.
Max. 10m Additional charge amount per meter = 20g/m*
10m over 15m Additional charge amount per meter = 30g/m
*In case of cooling only unit charge amount is 10g/m
[Example for heat pump units]
How much amount of additional charge for 10m piping?
(10 – 7.5)m
×
20g/m = 50g 50g for additional charge
How much amount of additional charge for 15m piping?
(10 – 7.5)m
×
20g/m + (15 – 10)m
×
30g/m = 200g 200g for additional charge
2.5.5 Test run
(1)
Conduct trial run after confirming that there is no gas leaks.
(2) When conducting trial run set the remote controller thermostat to continuous operation position. However when the power source
is cut off or when the unit’s operation switch is turned off or was turned to fan operation position, the unit will not go into operation
in order to protect the compressor.
(3) Insert in electric plug into the electric outlet and make sure that it is not loose.
(a) When there is something wrong with the electric outlet and if the insertion of the electric plug is insufficient, there may occur
a burn out.
(b) It is very important to be careful of above when pulgging in the unit to an already furnished electrical outlet.
(4) Explain to the customer on the correct usage of the air conditioner in simple layman’s terms.
(5) Make sure that drain flows properly.
(6) Standard operation data
(a) Heat pump type
(220/240V)
Vinyl tape
To cover the connecting portion with
insulation materials, cut upper portion and
then seal it with insulation materials.
Cover the exterior portion with
covering tape and shape the piping
so it will match the contours of the
route that the piping to take. Also
fix the wiring and pipings to the
wall with clamps.
Insulation
Refrigerant piping
Electrical wiring
Covering tape
Drain hose
Tapping screw
Temp. difference between suction
air and discharge air (˚C)