Heat Kit Nominal Kw; Electric Heater Capacity Btuh; S-61A Checking Heater Limit Control(S); S-61B Checking Heater Fuse Link - Daikin DZ20VC Service Instructions Manual

SERVICING
The heating mode temperature rise is dependent upon the system
airflow, the supply voltage, and the heater kit size (kW) selected.
Use data provided in below tables to determine the
temperature rise (°F).

HEAT KIT NOMINAL kW

CFM
3 5 6
800 12 19 23
1000 9 15 19
1200 8 12 15
1400 7 11 13
1600 6 9 12
1800 5 8 10
2000 5 7 9
240/1/60 Supply Voltage - Temp. Rise °F
HEAT KIT NOMINAL kW
CFM
3 5 6
800 11 18 22
1000 9 14 18
1200 7 12 15
1400 6 10 13
1600 6 9 11
1800 5 8 10
2000 4 7 9
230/1/60 SUPPLY VOLTAGE - TEMP. RISE °F
HEAT KIT NOMINAL kW
CFM
3 5 6
800 10 17 21
1000 8 13 17
1200 7 11 14
1400 6 10 12
1600 5 8 10
1800 5 7 9
2000 4 7 8
220/1/60 SUPPLY VOLTAGE - TEMP. RISE °F
Model
3 5
DV25PECB14* 550 650
DV37PECC14* 850
DV59PECD14* 990 1110 1200 1240 1520
DV61PECD14* 1030 1150 1250 1320 1650
MINIMUM CFM REQUIRED FOR HEATER KITS

ELECTRIC HEATER CAPACITY BTUH

HTR 3.0 4.7 6.0
KW KW KW KW
BTUH 10200 16200 20400 23800 32400 48600 66500 71600
For Installations not indicated above the follwing formula is to be
used:
8 10 15 19/20
31 37
25 30 44
21 25 37 49
18 21 32 42
15 19 28 37
14 16 25 33
12 15 22 30
8 10 15 19/20
30 35
24 28 42
20 24 35 47
17 20 30 40
15 18 27 35
13 16 24 31
12 14 21 28
8 10 15 19/20
28 33
22 27 40
19 22 33 45
16 19 29 38
14 17 25 33
12 15 22 30
11 13 20 27
HEATER(kW)
6 8 10 15 19
700 715 875
900 1000 1120 1220 1250
7.0 9.5 14.2 19.5
KW KW KW KW
TR=(kW x 3412) x (Voltage Correction) / (1.08 x CFM)
Where: TR = Temperature Rise
3412 = Btu per kW
VC* = 1.0 (240 Supply Volts)
25
62
53
1.08 = Constant
46
CFM = Measured Airflow
41
37

S-61A CHECKING HEATER LIMIT CONTROL(S)

Each individual heater element is protected with a limit control
25
device connected in series with each element to prevent overheat-
ing of components in case of low airflow. This limit control will
open its circuit at approximately 150°F to 160°F and close at
approximately 110°F.
59
51
44
HIGH VOLTAGE!
39 Disconnect ALL power before servicing
or installing. Multiple power sources
35
may be present. Failure to do so may
cause property damage, personal injury
or death.
25
1. Remove the wiring from the control terminals.
2. Using an ohmmeter, test for continuity across the normally
closed contacts. No reading indicates the control is open -
56
replace if necessary.
48
IF FOUND OPEN - REPLACE - DO NOT WIRE AROUND.
42
37

S-61B CHECKING HEATER FUSE LINK

33

(OPTIONAL ELECTRIC HEATERS)

Each individual heater element is protected with a one time fuse
20 25
link which is connected in series with the element. The fuse link
will open at approximately 333°F.
WARNING
1520
1690 1715
Disconnect ALL power before servicing.
1. Remove heater element assembly so as to expose fuse link.
2. Using an ohmmeter, test across the fuse link for continuity - no
21.0
reading indicates the link is open. Replace as necessary.
KW
NOTE: The link is designed to open at approximately 333°F. DO
NOT WIRE AROUND - determine reason for failure.
kW = Heater Kit Actual kW
= 0.92 (230 Supply Volts)
= 0.84 (220 Supply Volts)
= 0.77 (210 Supply Volts)
= 0.75 (208 Supply Volts)
*VC(Voltage Correction)
27