Toshiba RAS-16PKVP-ND - In Heating Operation

High Wall, Heat Pump Type
Service Manual
36
Toshiba
8-3-2. In Heating Operation
(This operation controls the fan speed at the indoor unit
side.)
The indoor fan (cross flow fan) is operated by the
phase control induction motor. The fan rotates in 5
stages in MANUAL mode, and in 5 stages in AUTO
mode, respectively.
(Table 1)
1) When setting the fan speed to L, L+, M, M+ or
H on the remote controller, the operation is
performed with the constant speed shown in
Fig. 3 and Table 8-3-2.
2) When setting the fan speed to AUTO on the
remote controller, revolution of the fan motor is
controlled to the fan speed level shown in Fig.
5 according to the set temperature and room
temperature.
3) Min. air flow rate is controlled by temperature of
the indoor heat exchanger (TC) as shown in
Fig. 4.
4) Cold draft prevention, the fan speed is
controlled by temperature of the indoor heat
exchanger (TC) as shown in Fig. 6.
In starting and in stability
Table 8-3-2 Indoor fan air flow rate (Heating)
Fan speed setup
HEAT ON
AUTO
YES
NO
MANUAL
TC 42°C
Min air flow rate control
TC
52
51
42
41
Limited to Min WD tap
*Fan speed =
(TC – (40 + a)) / 10 x (WD – W8) + W8
a : In up operation 1, in down operation 0
No limit
*
(Fig. 3)
(Fig. 4)
L
L+
M
M+
H
W8
(L+M)/2
WB
(M+H)/2
WE
Indication
Fan speed
Hi Power
W9
(L+M)/2
(M+H)/2
WD
WF
M+(WD)
Line-approximate
M+ and SUL with Tc.
SUL (W2)
Stop
46 46
TC
34
45 45 33
33 33 21
32 32 20
*A+4 *A+4 *A+4
*A-4 *A-4 *A-4
Fan speed MANUAL in starting
Fan speed AUTO in stability
Fan speed AUTO in starting
(Fig. 6)
* No limitation while fan speed MANUAL mode is in stability.
* A: When Tsc 24, A is 24, and when Tsc < 24, A is Tsc
Tsc: Set value
Cold draft preventive control
Basic fan control
Fan speed
TA - Tsc
[°C]
b
–0.5
c
–1.0
d
–1.5
e
–2.0
f
–2.5
g
–5.0
–5.5
L+ (W9)
M+ (WD)
*1
*2
*3
H (WE)
*1: Fan speed = (M+–L+)x1/5+L+
*2: Fan speed = (M+–L+)x2/5+L+
*3: Fan speed = (M+–L+)x3/5+L+
*4: Fan speed = (M+–L+)x4/5+L+
(Calculated with linear approximation from M+ and L+)
*5: Fan speed = (H–M)x1/5+M
*6: Fan speed = (H–M)x2/5+M
*7: Fan speed = (H–M)x3/5+M
*8: Fan speed = (H–M)x4/5+M
(Calculated with linear approximation from H and M)
(Fig. 5)
M(WB)
Hi Power
*6
*5
*7
*8*4
In starting In stability
FAN
AUTO
• Until 12 minutes
passed after operation
start.
• When 12 to 25 minutes
passed after operation
start and the room
temperature is 3°C or
more lower than the set
temperature.
• When 12 to 25 minutes
passed after operation
start and the room
temperature is higher
than the set temperature
–3°C
• When 25 minutes or more
passed after operation
start
FAN
Manual
• Room temperature
< Set temperature –4°C
• Room temperature
≥ Set temperature –3.5°C
Fan speed
level
RAS-07PKVP-E
RAS-07PKVP-ND
RAS-10PKVP-E
RAS-10PKVP-ND
RAS-13PKVP-E
RAS-13PKVP-ND
Fan
speed
(rpm)
Air flow
rate
(m
3
/h)
Fan
speed
(rpm)
Air flow
rate
(m
3
/h)
Fan
speed
(rpm)
Air flow
rate
(m
3
/h)
WF 1170 645 1200 665 1240 695
WE UH 1170 645 1200 665 1240 695
WD H 1070 575 1100 595 1140 625
WC M+ 980 510 1010 530 1050 560
WB 900 455 930 475 960 495
WA M 880 440 880 440 880 440
W9 850 420 850 420 850 420
W8 L+ 750 345 750 345 750 345
W7 L 750 345 750 345 750 345
W6 L– 650 275 650 275 650 275
W5 UL 650 275 650 275 650 275
W4 650 275 650 275 650 275
W3 SUL 650 275 650 275 650 275
W2 560 210 560 210 560 210
W1 420 110 420 110 420 110
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