TPI Fostoria FHK Series User manual

ISSUE DATE 12-12-08 REV. DATE 12-12-08 REV. LEVEL: 01 ECN: GP-5179 OIPM P/N 3420466 PG 1 O 20
FHK-4 series FHK-2 series FHK-13 series
FHK-6 series
FHK-Series
Heavy-duty Metal Sheath Element
Electric Portable nfrared Heaters
A DIVISION
TPI Corporation
PHONE: [phone]
www.tpicorp.com
IMPORTANT SAFETY
INFORMATION INSIDE
• Serious injury or death possible
• Read understand and follow
all safety information and
instructions in this manual
before using or servicing this
product.
• Retain these instructions for
future reference
.
REFER TO COMPLETE
NDEX OF
NFORMAT ON ON
PAGE 2
If you have questions about the
product you have purchased or would
like to leave us feedback please
contact us via our website
www.tpicorp.com
or by calling 1-800-251-0382.

ISSUE DATE 12-12-08 REV. DATE 12-12-08 REV. LEVEL: 01 ECN: GP-5179 OIPM P/N 3420466 PG 2 O 20
INDEX
General Description & Use Page 3
Specifications Page 4, 5
nstallation Planning Page 5, 6, 7
nstallation - Wiring Page 8, 9, 10
Operation Page 11, 12
Maintenance Page 12
Element & Reflector Replacement: FHK-2 & FHK-4 Page 13
Element Replacement: FHK-6 & FHK-13 Page 14
Reflector Replacement: FHK-6 & FHK-13 Page 15
Accessories Page 15
Exploded Views & Replacement Parts
FHK-2 Page 16
FHK-4 Page 17
FHK-6 Page 18
FHK-13 Page 19
Limited Warranty Page 20
DANGER indicates an imminently hazardous
situation which, if not avoided, will result in
death or serious injury.
WARN NG indicates a potentially hazardous
situation which, if not avoided, could result in
death or serious injur
y.
CAUT ON indicates a potentially hazardous
situation which, if not avoided, may result in
minor or moderate injury.
CAUT ON used without the safety alert symbol
indicates a potentially hazardous situation which,
if not avoided, may result in property damage.
ATTENTION:
The table to the right provides
definitions of the signal words that
can be found throughout this
manual. These signal words are
used to express the severity of the
hazard at hand. The signal words
are generally used in conjunction
with safety symbols that correspond
to the text for that particular hazard.
As you read this manual, refer back
to this table when you are unsure of
the signal word definition.

ISSUE DATE 12-12-08 REV. DATE 12-12-08 REV. LEVEL: 01 ECN: GP-5179 OIPM P/N 3420466 PG 3 O 20
THANK YOU!!
Thank you very much for selecting Fostoria’s portable electric infrared heating equipment for your
comfort heating needs. These products were engineered with the most reliable components and materials
available and are equipped with features to assure ease of installation and maintenance.
The warmth you will now enjoy when using this heating equipment is created by a heat source; a metal-
sheathed element; that emits infrared energy in the form of heat, like the sun. This is an economical way
to heat because it heats people and objects, not the air, so you don’t need to heat a large area to feel
warm.
CHECKING YOUR SHIPMENT
 Upon receipt of your shipment, check all cartons for visible damage.
 Claims for damaged material or shortages that were not evident upon receipt of shipment m
ust be
reported to carrier and TP Corporation’s customer service (800-251-0382) immediately.
 Any accessory items ordered for the heater will be shipped in separate cartons.
EXPLOSION HAZARD
FIRE HAZARD
BURN HAZARD
• Serious injury or death may
occur.
• Not for indoor residential use.
• Do not use outdoors in wet
conditions and in unprotected
locations.
• Use for comfort heating only.
• Do not use in locations
containing hazardous or
explosive atmospheres.
• Comply with “REQUIRED
CLEARANCES” table at
right for minimum clearances
to combustible materials.
The Fostoria FHK-series is a line of heavy-
duty portable
heaters designed to provide electric infrared heat when
permanently installed heaters are not practica
l or
economical. They are easily transported to the work site
and connected to disconnect switches or lighting centers.
The units are suited to a wide variety of indoor and
protected outdoor commercial or industrial uses. They
operate cleanly, emitting no fumes or odors.
Applications where combustible materials and/or
personnel will be located near these heaters require the
addition of a ground-
fault sensing switch as part of the
electrical circuit. See the NSTALLAT ON PLANN NG
section of this manual for
more details. Any installation
of these heaters must also adhere to the minimum
clearance information below.
MODEL
REQU RED CLEARANCES
TO COMBUST BLES
FROM FRONT OF HEATER
FHK-212-1CA 2 Feet
FHK-2 3 feet
FHK-4 3 Feet
FHK-6 4 Feet
FHK-13 7 Feet
GENERAL DESCRIPTION & USE

ISSUE DATE 12-12-08 REV. DATE 12-12-08 REV. LEVEL: 01 ECN: GP-5179 OIPM P/N 3420466 PG 4 O 20
SPECIFICATIONS
FHK-2 & FHK-4 Series:
 Powder-coated steel base and large carry
handle
 Gold-anodized aluminum housing for good
reflectivity and corrosion resistance
 Housing is of double-wall construction for
reduced surface temperatures
 Features aluminum extrusion and element
support clip for high-
vibration areas and rugged
environments
 U-shaped metal-sheath elements are factory-
installed and mounted on a cast aluminum
terminal box
 120V model (FHK-212-1CA) is equipped with
15ft cordset with NEMA 5-15 molded plug
FHK-6 & FHK-13 Series:
 Heaters are mounted on steel handcarts with 6-
inch wheels, which allow easy transport to the
job site.
 Gold-anodized aluminum housing for good
reflectivity and corrosion resistance
 Housing is of double-wall construction for
reduced surface temperatures
 Features aluminum extrusion and element
support clip for high-
vibration areas and rugged
environments
 U-shaped metal-sheath elements are factory-
installed and mounted on a corrosion protected
steel terminal box
 Model FHK-624-1CA is equipped with a 15ft,
type S, 3-wire cable with a #10-3 dryer plug
Amps Amps Dimensions (in.) Heater
Models
Voltage
And Phase 1ph. 3ph.
Number
Of
Elements
Watts Btu’s/Hr.
A B C
FHK-212-1CA 120; 1ph 15.0 n/a 1800 6,142
FHK-220-1A 208; 1ph 9.7 n/a
FHK-224-1A 240; 1ph 8.4 n/a
FHK-227-1A 277; 1ph 7.3 n/a
FHK-248-1A 480; 1ph 4.2 n/a
FHK-257-1A 600; 1ph 3.5 n/a
1 2000 6,824 13-1/2 11-1/2 28-1/2
FHK-420-1A 208; 1ph 21.7 n/a
FHK-424-1A 240; 1ph 18.8 n/a
FHK-427-1A 277; 1ph 16.3 n/a
FHK-448-1A 480; 1ph 9.4 n/a
FHK-457-1A 600; 1ph 7.8 n/a
1 4500 15,355 13-1/2 11-1/2 48-3/4
FHK-620-3A 208; 1 or 3ph 28.9 16.6
FHK-624-3A 240; 1 or 3ph 25.0 14.4
FHK-624-1CA 240; 1ph 25.0 n/a
FHK-627-3A 277; 1ph 21.7 n/a
FHK-648-3A 480; 1 or 3ph 12.5 7.2
3 6000 20,473
FHK-657-3A 600; 1 or 3ph 10.4 6.1
17 19-3/4 37-1/2
FHK-1320-3A 208; 3ph n/a 37.4
FHK-1324-3A 240; 3ph n/a 32.4
FHK-1327-3A 277; 1ph 48.8 n/a
FHK-1348-3A 480; 3ph n/a 16.2
FHK-1357-3A 600; 3ph n/a 13.6
3 13,500 46,064 19 27-1/2 59
Please see illustrations on next page regarding dimensions in table.

ISSUE DATE 12-12-08 REV. DATE 12-12-08 REV. LEVEL: 01 ECN: GP-5179 OIPM P/N 3420466 PG 5 O 20
SPECIFICATIONS (cont.)
A
C
B
FHK-2 & 4 series
B
C
A
FHK-6 & 13 series
INSTALLATION PLANNING
Fostoria’s metal-sheath infrared heaters are equipped with
heating elements that are manufactured using materials
with exceptional mechanical and thermal performance and
are built with precise process control to provide rugged and
reliable infrared performance in c
hallenging environments.
t is our understanding that these precision characteristics
can change with time, specifically in environments with
high humidity or where mechanical damage can occur,
causing the internal electrical insulation to weaken. Use of
Fostoria’s GF-SK-1 ground fault sensing switch will
monitor this gradual change and interrupt power to the
heaters prior to any arc-fault type failures, thereby
protecting against a possible fire or burn hazard. Any
installation where this is a concern m
ust be protected by
using the GF-SK-1 switch.
FIRE HAZARD
BURN HAZARD
• To prevent arcing type
faults premature element
failure and potential fire
or burn hazard use
Fostoria model GF-SK-1
ground fault switch with
these heaters.
• Read and follow all
instructions provided for
proper installation of
heaters and GF-SK-1.

ISSUE DATE 12-12-08 REV. DATE 12-12-08 REV. LEVEL: 01 ECN: GP-5179 OIPM P/N 3420466 PG 6 O 20
Options for using the GF-SK-1 with Fostoria FHK-Series heaters:
INSTALLATION PLANNING (cont.)
Mounting Option Heater Compatibility
Mounting GF-SK-1 directly
onto heater
FHK-6xx, FHK-13xx (cannot be mounted to FHK-2xx and FHK-4xx)
Wall-mounting the GF-SK-1
(see explanation below)
FHK-2xx, FHK-4xx, FHK-6xx, FHK-13xx
The GF-SK-1 can monitor a single heater as denoted
above but the most cost effective arrangement of the
system is realized when monitoring a circuit of
multiple heaters. The total number of heaters that
can be monitored by one GF-SK-
1 is dependant upon
the heater models selected and the supply voltage.
Using the total watts of the selected heaters to be
monitored, the known supply voltage (be certain the
heater voltage rating matches the supply voltage),
and the phase of the supply, the total load or “amps”
can be calculated. The GF-SK-1 is capable of
monitoring a heater circuit of up to 50 amps
maximum. A licensed electrician or design
engineer must do the necessary calculations.
FIRE HAZARD
• Serious injury or death may
occur.
• Heater circuit load
calculations and circuit design
must be done by a licensed
electrician or engineer.
Installer Qualifications
The installation and wiring of Fostoria FHK heaters
must be performed by a licensed electrician.
Installer Responsibility
The National Electric Code (NEC) and local codes
and ordinances together with specifications provided
by Fostoria comprise the information needed for
proper
installation. The installer must furnish all
materials that have not been purchased from Fostoria
or its representatives. t is the installer’s responsibility
that the materials and methods of installation result in
a job that is workmanlike and compliant
with all
applicable codes.
Over-voltage is a major cause of element
failure with these heaters. Make certain the
power supply voltage is no more than 2%
above the rated voltage of the heater being
utilized.
 The maximum ampacity rating for an infrared
heating circuit is 50A.
 The opening in the terminal box for branch
circuit supply wiring on FHK-2 models is sized
for 1/2-inch trade size cable connectors.
Openings in terminal boxes for supply wiring on
FHK-4, FHK-6 and FHK-
13 models are sized for
3/4-inch trade size cable connectors.
 Cable connectors and cables are not provided
with these heaters. (See Specifications on page 4
for exceptions.)
Preparations for Wiring Heaters

ISSUE DATE 12-12-08 REV. DATE 12-12-08 REV. LEVEL: 01 ECN: GP-5179 OIPM P/N 3420466 PG 7 O 20
AMPS Type SO Cable Size*
Heater Mo el KW VOLTS 3-PH 1-PH 3-PH 1-PH Plug Size 3-PH Plug Size 1-PH
FHK-220-1A 2 208 N/A 9.7 N/A 16/3 N/A NEMA L6-15
FHK-224-1A 2 240 N/A 8.4 N/A 16/3 N/A NEMA L6-16
FHK-227-1A 2 277 N/A 7.3 N/A 16/3 N/A NEMA L7-17
FHK-248-1A 2 480 N/A 4.2 N/A 16/3 N/A NEMA L8-20
FHK-257-1A 2 600 N/A 3.5 N/A 16/3 N/A NEMA L9-20
FHK-420-1A 4.5 208 N/A 21.7 N/A 10/3 N/A 30A/250V/3 Wire
FHK-424-1A 4.5 240 N/A 18.8 N/A 12/3 N/A 20A/250V/3 Wire
FHK-427-1A 4.5 277 N/A 16.3 N/A 12/3 N/A 20A/480V/3 Wire
FHK-448-1A 4.5 480 N/A 9.4 N/A 14/3 N/A 10A/480V/3 Wire
FHK-457-1A 4.5 600 N/A 7.8 N/A 14/3 N/A 10A/600V/3 Wire
FHK-620-3A 6 208 16.6 28.9 12/4 8/3 20A/250V/4 Wire 30A/250V/3 Wire
FHK-624-3A 6 240 14.4 25.0 14/4 10/3 20A/250V/4 Wire 30A/250V/3 Wire
FHK-627-3A 6 277 N/A 21.7 N/A 10/3 N/A 30A/480V/3 Wire
FHK-648-3A 6 480 7.2 12.5 14/4 14/3 20A/480V/4 Wire 20A/480V/3 Wire
FHK-657-3A 6 600 6.1 10.4 14/4 14/3 20A/600V/4 Wire 20A/600v/3 Wire
FHK-1320-3A 13.5 208 37.4 N/A 6/4 N/A 50A/250V/4 Wire N/A
FHK-1324-3A 13.5 240 32.4 N/A 8/4 N/A 50A/250V/4 Wire N/A
FHK-1327-3A 13.5 277 N/A 48.8 N/A 4/3 N/A 50A/480V/3 Wire
FHK-1348-3A 13.5 480 16.2 N/A 12/4 N/A 20A/480V/4 Wire N/A
FHK-1357-3A 13.5 600 13.6 N/A 12/4 N/A 20A/600V/4 Wire N/A
INSTALLATION PLANNING (cont.)
The following tables are provided to assist the licensed electrician in sizing the electric cables and/or plugs
needed for each FHK heater model. Since only models FHK-212-1CA and FHK-624-1CA are equipped with
cables and plugs, these items for all other models will have to be obtained through a local supplier or purchased
separately from Fostoria. (See Table B.)
All supply cables must be copper, rated 90°C and comply with all local codes and the National Electric Code
(NEC).
All recommended wire sizes assume a 50ft. maximum wire length.
Table A
Table B
ELECTRIC CABLES
SIZE/TYPE PART NO. SIZE/TYPE PART NO.
16/3 SO
14/3 SO
14/4 SO
12/3 SO
12/4 SO
10/3 SO
08804300
08804600
08804900
08804500
03164201
08804400
8/3 SO
8/4 SO
6/4 SO
4/3 SO
2/3 SO
08805200
08805100
03164001
08805300
08804700

ISSUE DATE 12-12-08 REV. DATE 12-12-08 REV. LEVEL: 01 ECN: GP-5179 OIPM P/N 3420466 PG 8 O 20
INSTALLATION
–
WIRING
For All Heaters
The FHK-
series heaters do not have any onboard controls
and therefore all permanently connected heaters must be
used in conjunction with the applicable Fostoria FPC-
series control center or be wired to a listed, properly
rated safety switch for on/off control. Always disconnect
the power at the circuit breaker or disconnect switch
before installing electric power to the heater. f the
breaker or disconnect switch cannot be seen from where
you will be working, lock it in the open position and tag
it to prevent unexpected application of power. Failure to
do so could result in fatal electric shock. Do not
depend on a thermostat or other switch as the sole means
of turning off power to the heater.
To disconnect power to heaters using wall receptacles
and plugs, simply unplug the heater.
“Bonding” is the intentional electrical connection of all
non-current carrying metal parts to the equipment
grounding (green) conductor of the heater and then
terminating this green conductor to the green conductor
of the power supply to form a low-impedance path back
to the power supply so that safety devices (circuit
breakers, fuses) can quickly remove dangerous touch
voltage from these parts when a fault occurs. Always
securely connect the green conductor from the power
supply to the green conductor of the heater.
ELECTRICAL SHOCK
HAZARD
• Serious injury or death
may occur.
•
Disconnect heater and lock
out from electrical supply
before installing or
servicing.
• Always securely connect
green wire on heater to
bonding (green) wire from
electrical supply.
Cable
Cable strain relief
Wire nut or other
termination
Green to green
Wiring of FHK-2 and FHK-4 Series Heaters
Since all FHK-2 and FHK-4 heaters (except FHK-212-1CA) are received without an electric cable, the
following steps must be taken before attaching the heater to the base:
1. nstall a standard or liquid-tight cable connector into the hole in the side of the terminal box. (See page 6
for appropriate cable connector sizes.)
2. Place the properly sized supply cable through the fitting. See page 7 for cable and plug size specifications
or refer to the National Electric Code (NEC).
3. Connect supply cable leads to the element lead wires in the terminal box with wire nuts or other safe
mechanical means. Black and white cable leads can be connected to either element lead wire. Connect
green lead from supply cable to green (bonding) lead in the terminal box. (See illustration shown above.)
Continued on next page

ISSUE DATE 12-12-08 REV. DATE 12-12-08 REV. LEVEL: 01 ECN: GP-5179 OIPM P/N 3420466 PG 9 O 20
4. Position
the rubber gasket (item 18) and the
base (item 21) on the bottom of the terminal
box (item 7), aligning the slotted holes.
Fasten the base and terminal box together
with the screws and nuts (items 16 & 17)
provided. (See page 14 (FHK-2) or 15 (FHK-
4) for item number list.)
5. Screw handle (item 22) onto the 3/8” bolt on
the back of the housing.
6. Connect heater to a suitable electric circuit.
Note: Handle, gasket, bolts, and nuts are in
hardware package 3917900.
INSTALLATION – WIRING (cont.)
22
Base and handle
Assembly view
7
21
17
18
16

ISSUE DATE 12-12-08 REV. DATE 12-12-08 REV. LEVEL: 01 ECN: GP-5179 OIPM P/N 3420466 PG 10 O 20
INSTALLATION – WIRING (cont.)
Wiring of FHK
-
6 and FHK
-
13 Series Heaters
:
All of these three-element models are factory-wired for
three-phase operation. Voltages other than 277V are
wired as shown in illustration 1. The 277V models are
wired as shown in illustration 2. To connect the
appropriate electrical service to your heater, follow the
steps below.
1.
Remove the cover and gasket from the bottom of the
terminal box, save screws.
2.
Select the properly sized cable from tables on page 7
and route it through the cable connector and i
nto
terminal box. Use a 3/4 inch cable connector* to
secure the cable to the terminal box.
3.
Use standard clamp type connectors, or if the heater is
to be used in damp locations, use liquid tight cable
connectors*.
4. Connect cable leads to the 6-inch element
lead wires
inside the terminal box, with wire nuts or other safe
mechanical means.
5. Reattach the cover and gasket removed in step 1.
6. f a plug* is to be used, blade configuration must be
selected per local codes and the NEC. Reference plug
sizes on page 7, Table A.
7. Connect the heater to a suitable electrical circuit.
* These items are not supplied with the heaters and must
be purchased locally.
** Jumper 2 (customer supplied) must be 12 AWG, 200º
C rated type SEW-
2 or equivalent, UL style 3074 wire, at
least 10 inches long. This jumper (p/n 3160609) can be
purchased from the factory.
3-Phase to Single-Phase Conversion:
This conversion is allowable on FHK-6 series models
only. To make this conversion, the licensed electrician
must take the arrangement in illustration 1 and revise it to
become as shown in illustration 3 by following the steps
below.
1. Remove pigtail L3 from post 6 (illustration 1).
2. Move one end of Jumper 1 from post 6 to post 5.
3. nstall Jumper 2** on posts 2 and 6.
4. Do not move Buss bars 1 and 2.
5. Replace supply wires with heavier gauge to
meet additional amp load. Reference table on
page 7.
Bonding wire (Green
wi
re in terminal box)
llustration 1
Jumper 1
Buss bar 1
Buss bar 2
To 3-wire,
3-phase
supply
L3
L2
L1
Bonding wire (Green
wire in terminal box)
To 480Y/277
3-phase, 4-
wire supply
llustration 2
N
L1
L2
L3
1
2
3
4
5
6
llustration 3
Bonding wire (Green
wire in terminal box)
To single-
phase supply
Buss bar 1
Jumper 1
Buss bar 2 Jumper 2**
(not included)
L1
L2
1
2
3
4
5
6

ISSUE DATE 12-12-08 REV. DATE 12-12-08 REV. LEVEL: 01 ECN: GP-5179 OIPM P/N 3420466 PG 11 O 20
OPERAT ON
When power is provided to these heaters the heater
elements will take several minutes to achieve full
infrared output that can be confirmed by an orange to
dull red glow on the element sheath. The element
sheath under this condition is operating between 1,500
and 1,600° F emitting medium wavelength (approx. 3
microns or millionths of a meter) infrared energy. This
energy, that can also be considered “radiation” is not
harmful, yet is very effective at heating objects and
surfaces that are within the line-of-
sight of the elements
and the heater’s reflective surfaces.
When power is provided or removed from these
heaters, you may hear unfamiliar sounds that are caused
by the expansion and contraction of metal components
in the heater. This is normal.
There are no on/off switches, tip-over switches or over-
temperature safety cut out devices included on any of
these heaters. See the Accessories section of this
manual for more details.
FIRE HAZARD
BURN HAZARD
• Serious injury or death
may occur.
• Always operate heaters on
level surfaces.
• Allow heater to fully cool
after power is removed
before touching or
working on it.
• Do not leave heaters
unattended while in
operation
• Maintain minimum
clearances to combustibles
as shown in table below.
MODEL
REQU RED CLEARANCES
TO COMBUST BLES
FROM FRONT OF HEATER
FHK-212-1CA 2 Feet
FHK-2 3 feet
FHK-4 3 Feet
FHK-6 4 Feet
FHK-13 7 Feet
If any metal-sheath element has an obvious
“bowing” or sagging condition during
operation an over-voltage / over-
temperature condition may exist. De-
energize the heater immediately and allow to
fully cool. Replace all elements that have
been distorted in any way. Before returning
power to heaters make certain the power
supply voltage is no more than 2% above the
rating on the heater data label.

ISSUE DATE 12-12-08 REV. DATE 12-12-08 REV. LEVEL: 01 ECN: GP-5179 OIPM P/N 3420466 PG 12 O 20
Ground
-
Fault Monitoring and Operation
:
As explained in the “installation planning” section of
this manual, most, if not all, applications using metal-
sheath heaters will require the use of the GF-SK-1
ground-fault sensor switch. Refer to the instructions
provided with this switch for proper installation.
f, during heater operation, the GF-SK-1 “trips” and
interrupts power to your heater or heater circuit, then
one or more of the metal-sheath elements in the
heater or heater circuit being monitored has a reduced
insulation resistance value that may be due to an
element that is about to fail. Have a licensed
electrician follow the warnings and instructions in the
“operation” section of the GF-SK-1 manual.
OPERAT ON (cont.)
FIRE HAZARD
BURN HAZARD
• To prevent arcing type
faults premature element
failure and potential fire
or burn hazard use
Fostoria model GF-SK-1
ground fault switch with
these heaters.
• Read and follow all
instructions provided for
proper installation of
heaters and GF-SK-1.
MA NTENANCE
Pre-Season Maintenance and Annual Inspection
To ensure your safety and years of trouble-free operation from the heaters, periodic service and inspections
must be done by a trained maintenance person or licensed electrician.
To obtain maximum performance from your heater(s) each year, we recommend the following be
performed at the start of the heating season:
1. Clean housing reflector surfaces with a damp cloth.
2. Blow or dust off the elements and inner reflectors.
3. Repair or replace damaged power cables.
4. DO NOT hose-down these heaters.
Storage
When storing the heaters for long periods they should be covered to avoid accumulation of dust and other
contaminants. Keep them in dry areas away from dripping or standing water and heavy humidity.
• Do not store in a damp location.

ISSUE DATE 12-12-08 REV. DATE 12-12-08 REV. LEVEL: 01 ECN: GP-5179 OIPM P/N 3420466 PG 13 O 20
ELECTRICAL SHOCK HAZARD
• Serious injury or death may occur.
• Disconnect heaters from electrical
supply before replacing parts.
Use only Fostoria replacement elements of the
same wattage voltage and part number as the
original element. Reference tables on
replacement parts pages later in this manual.
Always install new reflector included with each
replacement
element.
ELEMENT & REFLECTOR REPLACEMENT: FHK-2 & FHK-4
1. D SCONNECT POWER FROM THE ELECTR CAL
SUPPLY CABLE OF THE PORTABLE HEATER
BE NG REPA RED.
2. Position heater on workbench with reflector opening
pointing UP.
3.
Remove wire guard by taking out the (5) screws shown
in llustration 4 with a 5/16” nut driver, save hardware.
4. Remove element support clip (2 on FHK-4 models),
save clip(s).
5. Remove base and gasket from terminal box on heater;
save base, gasket and hardware.
6. Disconnect the 2 wires from heating element by
loosening the 3/8” hex nuts at the bottom of the rod.
7. Remove old element by removing the large hex nuts,
metal washers and gaskets, discard all.
8. Slide old reflector out of the extrusion and discard.
9. Peel protective film from new reflector, and then place
it in the extrusion. Make sure reflector is secured in
slots in extrusion.
10. nstall new element in terminal box, using hardware
included. See llustration 5.
11. Reinstall element support clip(s), removed in Step 4,
into extrusion.
12. Connect the two wires to the element as shown in
llustration 5. Make sure that bare metal wire terminals
from different posts do not come in contact with each
other.
13. Reattach base and gasket to terminal box with
hardware removed in Step 5.
14. Reattach wire guard to housing with screws removed
in Step 3.
15. Heater is now ready for normal operation.
Screw
Screw Base
llustration 4
Hex nut
Terminal box
Gasket Wire guard
Screw
Metal-sheath
element
Hex nut
Hex nut
Large hex nut
Metal washer
Gasket
Washer Wire & terminal
llustration 5
llustration 6
Support clip
Reflector
Extrusion
Slot

ISSUE DATE 12-12-08 REV. DATE 12-12-08 REV. LEVEL: 01 ECN: GP-5179 OIPM P/N 3420466 PG 14 O 20
ELEMENT REPLACEMENT: FHK-6 & FHK-13
ELECTRICAL SHOCK HAZARD
• Serious injury or death may
occur.
• Disconnect heaters from
electrical supply before
replacing parts.
Use only Fostoria replacement elements of
the same wattage voltage and part number
as the original element. Reference tables on
replacement parts pages later in this
manual.
Always install new reflector included with
each
replacement element.
1.
D SCONNECT POWER FROM THE ELECTR CAL
SUPPLY CABLE OF THE PORTABLE HEATER
BE NG REPA RED.
2. Position heater with reflector opening pointing UP.
3. Remove the wire guard from the heater to access the
fasteners that attach the terminal box. Remove and
save the (12) screws shown in llustration 7 with a
5/16” nut driver.
4. Remove and save the (4) screws that attach the
terminal box to the heater, with a 1/4” nut driver. See
llustration 8.
5. Grasp terminal box assembly and firmly pull in the
direction shown in llustration 9. The elements have
been fed through some support clips inside the heater
housing. These clips will cause some drag or
resistance to removal. There will be some unpleasant
noise as the elements slide through the clips.
6. Remove cover and gasket from terminal box; save
them and all screws.
7. D
isconnect the wires from only the heating element to
be replaced by loosening the 3/8” hex nuts at the
bottom of the element similar to llustration 5.
8. Remove old element by removing the large hex nuts,
metal washers and gaskets, discard all.
9. nstall new element in terminal box, using hardware
included. See llustration 5.
10. Reconnect the wires to the element as they were
before removal. Make sure that bare metal wire
terminals from different posts do not come in contact
with each other.
11. Reattach base, gasket and screws to terminal box.
12. Before reinstalling the heating elements, the old
reflector should be replaced with the new one received
with the new heating element. See next page for
Reflector Replacement.
13. After completing all steps in Reflector Replacement,
place the heating element assembly back into the
housing and secure with screws removed in Step 4.
14. Reattach wire guard with screws removed in Step 3.
15. Heater is now ready for normal operation.
llustration 7
Screw
llustration 8
(4) Screws
llustration 9
Support clip locations

ISSUE DATE 12-12-08 REV. DATE 12-12-08 REV. LEVEL: 01 ECN: GP-5179 OIPM P/N 3420466 PG 15 O 20
REFLECTOR REPLACEMENT: FHK-6 & FHK-13
ELECTRICAL SHOCK HAZARD
• Serious injury or death may
occur.
• Disconnect heaters from
electrical supply before
replacing parts.
To replace the reflector:
1.
Lay heater face down and remove the cart from the
heater by taking off the (4) jam nuts as shown in
llustration 10.
2. Lift the back shield and (4) washers off the heater.
3. Remove the (2) support clips from the front of the
reflector.
4. Remove (4) jam nuts that secure the extrusion to
the housing. The extrusion and reflector will now
come out of the housing.
5. Slide the reflector out of the extrusion and discard.
6. Peel protective film from new reflector, and then place
the reflector in the extrusion. Make sure it is secured in
slots in extrusion.
7. Reattach extrusion, back shield and cart, using
hardware removed in previous steps.
8. Replace support clips in the front of the reflector.
9. Finish reassembly of heater by completing Steps 13
and 14 on page 14.
llustration 10
Jam nut
Cart
Back shield
Washer
Jam nut
Reflector
Extrusion
Support clips
ACCESSORIES
The kits shown below are optional controls for the FHK Series heaters.
DC-SK-1
Disconnect switch
Part No.: 05893702
-Wall mountable for all FHK models
-Mounts directly on FHK-6 & FHK-
13
models only
TO-SK-1
Tip-over switch
Part No.: 04858102
-Mounts directly on FHK-
6 & FHK-13 models only
GF-SK-1
Ground fault sensor switch
Part No.: 04860202
-Wall mountable for all FHK
models
-Mounts directly on FHK-
6 &
FHK-13 models only

ISSUE DATE 12-12-08 REV. DATE 12-12-08 REV. LEVEL: 01 ECN: GP-5179 OIPM P/N 3420466 PG 16 O 20
FHK
-
2 EXPLODED VIEW AND REPLACEMENT PARTS LIST
2
19 3
6 10
9
14
13
23
17
7
12
18
21
16
4
1
15 20 11
5
8
25 24
ITEM
NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
DESCRIPTION
Side baffle
Back shield
Mounting bracket
Mounting brace
Pop rivet
Extrusion
Terminal box
Reflector
Element support
Screw 3/8-16 x 1/2
Nut 3/8-16
Screw 10-32 x 3/8
Wire guard
Screw 10-32 x 3/4
Nut self-retaining 10-32
Screw 8-32 x 1/2
Nut 8-32
Gasket
Screw 3/8-16 x 1
Washer fender 3/8
Base
Handle
Metal-sheath element
Cable connector 1/2” *
14-3 Cordset *
PART NUMBER
8022707
8022607
8023000
8023100
3482200
8041700
8040501
8048900
8024100
3474300
3429100
3475000
8022329
3424956
3403900
3427456
3405156
8040700
3493900
3478600
8042921
8041800
See Table 1
7714114
3175600
QTY.
2
1
1
1
18
1
1
1
1
2
3
1
1
5
5
4
4
1
1
1
1
1
1
1
1
Table 1
MODEL VOLTS
METAL-
SHEATH
ELEMENT
PART NUMBER
FHK-212-1CA 120 04458702
FHK-220-1A 208 04458302
FHK-224-1A 240 04457902
FHK-227-1A 277 04458402
FHK-248-1A 480 04458002
FHK-257-1A 600 04458802

ISSUE DATE 12-12-08 REV. DATE 12-12-08 REV. LEVEL: 01 ECN: GP-5179 OIPM P/N 3420466 PG 17 O 20
FHK
-
4 EXPLODED VIEW AND REPLACEMENT PARTS LIST
11 5
20
2
19 3
6 15 10
8
9
14
13
23
17
7
12
18
21
16
4
1
ITEM
NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
DESCRIPTION
Side baffle
Back shield
Mounting bracket
Mounting brace
Pop rivet
Extrusion
Terminal box
Reflector
Element support
Screw 3/8-16 x 1/2
Jam nut 3/8-16
Screw 10-32 x 3/8
Wireguard
Screw 10-32 x 3/4
Nut self-retaining 10-32
Screw 8-32 x 1/2
Hex nut 8-32
Gasket
Screw 3/8-16 x 1
ender washer 3/8”
Base
Handle
Metal-sheath element
PART NUMBER
8022907
8022807
8023000
8023100
3482200
8042400
8040502
8049000
8024100
3474300
3429100
3475000
8022429
3424956
3403900
3427456
3405156
8040700
3493900
3478600
8042921
8041800
See Table 2
QTY.
2
1
2
1
26
1
1
1
2
3
4
1
1
7
7
4
4
1
1
1
1
1
1
Table 2
MODEL VOLTS
METAL-
SHEATH
ELEMENT
PART NUMBER
FHK-420-1A 208 04458502
FHK-424-1A 240 04458102
FHK-427-1A 277 04458602
FHK-448-1A 480 04461702
FHK-457-1A 600 04458902

ISSUE DATE 12-12-08 REV. DATE 12-12-08 REV. LEVEL: 01 ECN: GP-5179 OIPM P/N 3420466 PG 18 O 20
FHK
-
6 EXPLODED VIEW AND REPLACEMENT PARTS LIST
26
24
23
25 27
16
4
13
19
12
3
14
10
19
11
15
7
6 5 2
8
17
8
18
22
20
21
1
ITEM.
NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
DESCRIPTION
Housing Assembly
Extrusion
Terminal box
Terminal box cover
Reflector
Metal sheath element support
Screw 3/8-16 x 1/2
Jam nut 3/8-16
Screw 8-18 x 1/2
Hex head screw 8-15 x 1/2
Hex head screw 10-32 x 3/8
Gasket
Lamp guard
Back shield
Screw 3/8-16 x 1
Screw 10-32 x 5/8
Self retaining nut 10-32
ender washer 3/8”
Metal-sheath element
Cable 10-3 type S x 15’ long *
Plug 3-pole 3-wire 30-50 amps *
3/4” cable connector *
Tubing plug
Cart weld assembly
Cart axle
Wheel
Push nut 1/2” diameter
PART NUMBER
8827999
8041700
8040802
8040900
8048900
8024100
3474300
3429100
3444456
3470800
3475000
8041000
8020829
8020707
3493900
3424956
3403900
3478600
See Table 3
3163601
3180000
7714124
2415100
3924402
8523632
8043600
8045700
QTY.
1
3
1
1
3
3
2
10
4
4
1
1
1
1
4
8
8
4
3
1
1
1
2
1
1
2
2
Table 3
MODEL VOLTS
METAL-
SHEATH
ELEMENT
PART NUMBER
FHK-620-3A 208 04458302
FHK-624-3A 240 04457902
FHK-624-1CA 240 04457902
FHK-627-3A 277 04458402
FHK-648-3A 480 04458002
FHK-657-3A 600 04458802

ISSUE DATE 12-12-08 REV. DATE 12-12-08 REV. LEVEL: 01 ECN: GP-5179 OIPM P/N 3420466 PG 19 O 20
FHK
-
13 EXPLODED VIEW AND
REPLACEMENT PARTS LIST
13
16
4
24
3
12
10
9
11
14
6
7
15
5
2
8
18
8
17
21
19
23
20 22
1
ITEM.
NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
DESCRIPTION
Housing Assembly
Extrusion
Terminal box
Terminal box cover
Reflector
Metal sheath element support
Screw 3/8-16 x 1/2
Jam nut 3/8-16
Screw 8-18 x 1/2
Hex head screw 8-15 x 1/2
Hex head screw 10-32 x 3/8
Gasket
Lamp guard
Back shield
Screw 3/8-16 x 1
Screw 10-32 x 5/8
Self retaining nut 10-32
ender washer 3/8”
Cart weld assembly
Cart axle
Wheel
Push nut 1/2” diameter
Tubing plug
Metal-sheath element
PART NUMBER
8829599
8042400
8040802
8040900
8049000
8024100
3474300
3429100
3444456
3470800
3475000
8041000
8021929
8021707
3493900
3424956
3403900
3478600
3924402
8523632
8043600
8045700
2415100
See Table 4
QTY.
1
3
1
1
3
6
8
16
4
4
1
1
1
1
4
12
12
4
1
1
2
2
2
3
Table 4
MODEL VOLTS
METAL-
SHEATH
ELEMENT
PART NUMBER
FHK-1320-3A 208 04458502
FHK-1324-3A 240 04458102
FHK-1327-3A 277 04458602
FHK-1348-3A 480 04461702
FHK-1357-3A 600 04458902

ISSUE DATE 12-12-08 REV. DATE 12-12-08 REV. LEVEL: 01 ECN: GP-5179 OIPM P/N 3420466 PG 20 O 20
L M TED WARRANTY
TPI Corporation – P.O. Box 4973 – Johnson City, TN 37602 – 1-800-251-0382
The warranty herein set forth is in lieu of all other warranties expressed or implied.
TPI Corporation of Johnson City, TN 37602, warrants its products to the owner against defects in material and workmansh
ip for a twelve (12) month period
under normal use and service following date of manufacture or installation when proof of such is provided to seller.
This Warranty requires that the owner, or his agent, install the equipment in accordance with the Nation
al Electrical Code, any other applicable heating or
electrical codes and the manufacturer’s installation instructions. It further requires that he perform reasonable and necessary maintenance on the unit. The
company is not liable for abuse or misuse of product as may be finally determined by the company.
The obligation of TPI Corporation under the terms of this warranty, shall be to supply a new part, repair of defective part, or a refund, at the company’s option
with no cost to owner for the new or repai
red part. Such parts are to be returned to the factory, or such other location as the company may designate. This
warranty does not obligate TPI Corporation to bear the cost of labor in replacing any assembly, unit or component part thereof, nor does the c
ompany assume
any liability for secondary charges, expenses for installing or removal, or any other consequential losses. The company’s maximum liability shall not in any case
exceed the list price for the product claimed to be defective.
The warranty sha
ll not apply to any product or parts of products that have been repaired or altered outside of Seller’s factory in any manner. Warranty is void on
products that have been determined to have been subjected to misuse, negligence or accident or which have bee
n used in a manner contrary to Seller’s
instructions.