®
Chromalox
Installation, Operation
DIVISION
SALES
SECTION
4
LUH
and
(Supersedes PF448-6)
PF204-1
REFERENCE
RENEWAL PARTS IDENTIFICATION
161-305676-001
DATE
JANUARY, 2007
Thermostat Kits
Model Number HVH-TK5
Model Number HVH-TK6
For field installation only in HVH-02 through HVH-15 heaters
SPECIFICATIONS
1. Temperature Range: 40˚F to 90˚F.
2. Differential: 5˚F.
LO
HI
R
3. Non-inductive Rating:
120V @ 25 Amperes
240V @ 25 Amperes
277V @ 22 Amperes
Chromalox
OFF
GENERAL
The following procedure contains instructions for installing ther-
mostat kits HVH-TK5 and HVH-TK6 in HVH-02 through HVH-
15 Heaters.
ELECTRIC SHOCK HAZARD. Disconnect all power
before installing thermostat kit. Failure to do so
could result in personal injury or property damage.
Thermostat kit must be installed by a qualified per-
son in accordance with the National Electrical Code,
NFPA 70.
INSTALLATION
Step 1
KO
1. Verify that the thermostat kit is compatible with your heater.
HVH-TK-6 is a DPST line voltage thermostat, it can be used
on 1Ø, 240V max. up to 25A and 1Ø, 277V up to 22A heaters.
HVH-TK-5 is a SPST is a thermostat used in conjunction with
a contactor.
Nameplate
2. Peel off “Chromalox” label located on the bottom front corner
of the heater. Removal of the label will reveal the holes for
mounting the thermostat (See Figure 1).
3. Carefully remove the KO on the bottom side of heater.
Figure 1
© 2010 Chromalox, Inc.
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WIRING DIAGRAMS (cont’d.)
Figure 5
Optional Thermostat
Built in or field installed
1Ø Wiring
208-277V 1Ø or 3Ø with contactor
To T1 To T1 To T1
Motor
3Ø Wiring
Elements
TO T1
TO T1
TO T2
TO T3
TO T3
TO T2
To T2 To T2 To T2
Purple
Orange
NOTE: Omit "L3" wiring for 1Ø heaters
T1
T2
T3
L3
Terminal
Block
C1
C2
C3
L1 L2
Pink
Cutout
Optional Disconnect
Switch Built in or
field installed
Remove jumper wire when thermostat is used
Power
60 Hz
Optional Thermostat
Built in or field installed
Figure 6
See Note #2
1Ø Wiring
To T1 To T1 To T1
208-480V 1Ø or 3Ø
with contactor and transformer
Motor
3Ø Wiring
Elements
TO T1
TO T1
TO T2
TO T3
TO T3
TO T2
Sec
To T2 To T2 To T2
TRANSFORMER COLOR CODE INDEX
120V SEC.
T1 T2 T3
X1 X2
H1 H2
PRI.
PRI. XFMR
24V SEC.
X1 X2
VOLT
LEAD CLRS LEAD CLRS LEAD CLRS
Terminal
Block
C1
C2
C3
H1
H2
RED
OR
X1
X2
208
240
277
480
575
BLK
BLK
BLK
BLK WHT YEL BLU
BLK WHT YEL BLU
BLK WHT YEL BLU
BR
L1 L2 L3
BLK BLK/RED BLK WHT YEL BLU
BLK BLK WHT YEL BLU
GRA
Pink
NOTE:
Optional Disconnect
Switch Built in or
field installed
1. Omit "L3" wiring for 1Ø heaters
2. 3Ø Motors used on all 480V, 7.5 kW or higher
heaters. All other heaters use 1Ø motors.
Remove jumper wire when
themostat is used
Power 60 Hz
Figure 7
1Ø Wiring
Optional Thermostat Built in or field installed
3Ø Wiring
1Ø or 3Ø with optional external 24
or 120V control using single
pole thermostat
To T1 To T1
To T1
Motor
Elements
TO T1
TO T1
TO T2
TO T3
TO T3
TO T2
To T2
To T2
To T2
Remove jumper wire when
thermostat is used
T1 T2 T3
Terminal
Block
NOTE:
C1
C2
C3
1. Omit "L3" wiring for 1Ø heaters
L1 L2
L3
Cutout
Optional Disconnect
Switch Built in or
field installed
Externally provided control voltage.
See nameplate for voltage
Power 60 Hz
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RENEWAL PARTS IDENTIFICATION
1Ø Wiring
To T1 To T1
Figure 8
1Ø or 3Ø with optional external 24
or 120V control using double
pole thermostat
To T1
Motor
3Ø Wiring
Elements
TO T1
TO T1
TO T2
TO T3
TO T3
TO T2
To T2
To T2
To T2
T1 T2 T3
NOTE:
Terminal
Block
1. Omit "L3" wiring for 1Ø heaters
C1
C2
C3
L1 L2
L3
Cutout
Optional
Remove jumper wire when
thermostat is used
Disconnect
Switch Built
in or field
installed
Optional Double
Pole Thermostat
Externally Provided Control Voltage.
See Nameplate for Voltage.
Power
60 Hz
RENEWAL PARTS IDENTIFICATION
HVH-TK-5 Components KiT
Part Number*
HVH-TK-6 Components Kit
Part Number*
300-049197-004
248-049282-021 (2)
135-075436-008
170-049279-016
059-075500-002
169-049278-001
Thermostat
300-049197-003
248-049282-021 (2)
135-075436-008
170-049279-016
059-075500-002
169-049278-001
Screws
Rubber Grommet
Label Decal
Bulb Clip
Knob
*Number in Parentheses ( ) indicates the quantity of that part required.
Limited Warranty:
Please refer to the Chromalox limited warranty applicable to this product at
2150 N. RULON WHITE BLVD., OGDEN, UT 84404
Phone: 1-800-368-2493
TA - U0 - EF
Litho in U.S.A.
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