Check Lists - Toshiba MiNi-SMMS MCY-MAP0501HT Service Manual

Check list 1
• Using the "Check list 1", check there is no trouble in the installation work.
Is capacity of the leak breaker appropriate?
Is the diameter of the power cable correctly wired?
Is the control communication line correctly wired?
Is the power of the indoor units supplied collectively?
Is the earth grounded
Is the insulation good? (10MΩ or more)
Is the main power voltage correct? ( ± 10%)
Is the diameter of the connecting pipe correct?
Is the branch kit correct?
Does the indoor unit condensate drain adequately?
Is the thermal insulation of pipes good? (Connecting pipes, Branch kit)
For both indoor and outdoor units, ensure air is not short-circuited from discharge to inlet ports.
After pressure test, check that the pipework and indoor units have been vacuumed and the correct amount of additional gas has been charged.
Are valves of all the outdoor units fully opened?
outdoor unit (A)
• Check the additional amount of refrigerant.
Outdoor total capacity XXXX A Indoor unit XXXX
Outdoor unit (A) XXXX mm² Indoor unit XXXX
Indoor –outdoor connection terminals (U1, U2)
Central control system connection terminals (U3, U4)
XXXX MΩ or more
XXXX V
Gas side Liquid side
XXXX XXXX
Check list 2
Calculate the additional amount of refrigerant from the following:
A
mm²
Additional
R
refrigerant charge (kg)
XXXX
amount at site
XXXX
Firstly enter the total length for each liquid pipe in the following table and then calculate the additional amount of
refrigerant by pipe length.
(Table 1) Additional amount of refrigerant by pipe length
Pipe dia at Standard amount of refrigerant
liquid side kg/m
Ø6.4 0.025 ×
Ø9.5 0.055 ×
Next, refer to the following table for the corrective amount of refrigerant (B) by system capacity.
(Table 2) Compensation by outdoor HP
Outdoor unit capacity type
0401 type
0501 type
0601 type
Finally add the additional amount of refrigerant by pipe length (A) to the corrective amount of refrigerant by
system capacity (B). This is the final additional amount of refrigerant.
If the result is indicated as a negative, do not add any refrigerant. Do not add the refrigerant (= 0kg).
Additional refrigerant charge amount at site (R)
Additional amount of refrigerant by pipe length
Compensation by outdoor HP
Additional amount of refrigerant
Additional refrigerant charge
Real length
= ×
amount per liquid pipe 1m
of liquid pipe
(Table 1)
Additional amount of refrigerant pipe
Total pipe length at each liquid side
=
=
Additional amount of refrigerant by pipe
length (A)
Compensation by outdoor HP kg
–0.8
–0.4
0
(Table 1) kg
(Table 2) kg
(R) kg
Compensation
+
by outdoor HP
(Table 2)
dia at each liquid side kg
kg
kg
kg