Heating Element And Limit Switches - Friedrich VERT-I-PAK VHA09K25RTQ Service Manual

Heating Element and Limit Switches

WARNING
SYMBOL REVISIONS
ELECTRIC SHOCK HAZARD
PRODUCTION RELEASE
Turn off electric power before service or
installation. Extreme care must be used, if it
becomes necessary to work on equipment with
power applied.
Failure to do so could result in serious injury or
death.
14 06-21783-00
Model Part Number
13 SEE TABLE
12 SEE TABLE
230v 2.5 kW 8010240
11 46-4868-00
230v 3.4 kW 8010241
10 08-2839-00
9 07-0393-00
230v 5 kW 80102042
8 08-1949-01
230v 7.5 kW 80102043
7 SEE TABLE
6 SEE TABLE
230v 10 kW 8010244
5 05-0272-02
265v 2.5 kW 8010245
4 05-0272-01
3 COIL
265v 3.4 kW 8010246
2 COIL
265v 5 kW 8010247
1.4 03-4394-20
1.3 (01.375) 03-7481-02
265v 7.5 kW 8010248
1.2 (11.000) 03-4633-29
265v 10 kW 8010249
1.1 88-25128-00
1 50-25127-00
ITEM NO. PART NUMBER
SCALE: DIMENSIONS ARE IN INCHES
40
TOLERANCES:
UNLESS OTHERWISE SPECIFIED
1:1.125
FRACTIONAL 1/16
ANGULAR: MACH 1° BEND 5°
COMPONENTS TESTING
E.C.R DATE
83920 10/30/2023
1 Coil 1 (Defrost Coil) ARROW LABEL
Specifications
1 kW SIZE LABEL 0.5" x 0.5"
1 kW SIZE LABEL 0.5" x 0.5"
900W 230V 51.70 Ω ±5%
1 LABEL, BLANK THERMAL TRANSFER
1550W 230V 30.02 Ω ±5%
4
DUAL QC RECEPTACLE (FEMALE)
SCREW #8-32 X .375" LG. HEX, WASHER HD.
4
3400W 230V 13.68 Ω ±5%
THREAD
4
MALE QC TERMINAL W/EXTERNAL LOCK
5000W 230V 9.31 Ω ±5%
T.O.D. THERMOSTAT 60FX04 (ONE SHOT
2
200°F)
T.O.D. 60TX01 THERMOSTAT (AUTO
2
5000W 230V 9.31 Ω ±5%
RESET)
4
TERMINAL CERAMIC - FEMALE
900W 265V 68.63 Ω ±5%
4
TERMINAL CERAMIC - MALE
1 SEE TABLE
1550W 265V 39.85 Ω ±5%
1 SEE TABLE
3400W 265V 18.17 Ω ±5%
1
X / R BAR #8 (0.162) GA.
Clip & Insulator Assembly, Large Narrow A.
12
H. (243-243)
5000W 265V 12.35 Ω ±5%
3 FRAME BAR #8(.162)GA.
TERMINAL PLATE #18 (.045 MIN.) GA.
5000W 265V 12.35 Ω ±5%
1
GALVANIZED ST'L.
1
RACK ASSEMBLY
Table 606 (Electrical Heater Coil Specifications)
QTY. DESCRIPTION
TWO PLACE DECIMAL 0.063
500 Gould Drive, Cookeville, TN 38506
THREE PLACE DECIMAL 0.031
www.Tutco.com
All models are equipped with a dual heating element. Each element has a
primary limit switch (bimetal thermostat). Should the blower motor fail, filter
become clogged or air-flow be restricted etc., the high limit switch will open
APPROVED
and interrupt the power to the heater before reaching an un-safe temperature
T.Q.
condition.
The limit switches are in series with the element and will interrupt the power
at a designed temperature. (Open at 165˚ and close at 135˚F. Each element
is also equipped with a one time switch that will open at 200˚F. If this switch
opens the heating element module will need to be replaced.
To Check the Heater elements:
1. Open the control box and disconnect the leads from the heater control
relays.
2. Ohm out the the elements through the applicable wires.
Refer to the specifications chart below and the applicable
3. If you determine the heat element to be out of tolerance (Open, shorted,
or out of specifications) access the heater element by remove the left side
access panel of the unit (See Heater
heater element and recheck. If findings are confirmed replace the heater
element.
Coil 2
Specifications
1550W 230V 30.02 Ω ±5%
1600W 230V 25.85 Ω ±5%
1600W 230V 29.08 Ω ±5%
2500W 230V 18.61 Ω ±5%
5000W 230V 9.31 Ω ±5%
1550W 265V 39.85 Ω ±5%
1800W 265V 34.31 Ω ±5%
1600W 265V 38.60 Ω ±5%
2500W 265V 24.71 Ω ±5%
5000W 265V 12.35 Ω ±5%
Wiring Diagram..
removal) , remove the wires from the
Primary Limit Switch Secondary Limit
(Auto) Switch (1 Time)
OPEN 165 F˚
OPEN 200 F˚
CLOSE 135 F˚