Electric CK Plenum Heater
Plenum Heater
The Model CK Series is a special application heater that is approved for use
in concealed areas of a building. This
heater may be installed in areas that are
not readily available for a person to see,
such as the area between a concrete
ceiling and a drop-tile ceiling, in plenum
open or ducted system and can be used
for constant environmental temperature
control and freeze protection for sprinkler systems in concealed areas.
It is also suitable for use as a special purpose unit heater where the environmental requirements are
dirty, dusty, moist or mildly corrosive.
CK heater installed inside a plenum area
for inline ducted air and heat boost in large
commercial HVAC systems.
Access opening must be
provided to the heater.
OPTIONS
2-Stage Control for Single or Three Phase Models
Modulating Thermostat for SSR Control
In-Built Thermostat - N.E.M.A. 4X
Duct Sensor for Modulating Thermostat
Motor Substitution To Increase Or Decrease CFM, Standard ¼ and ½ HP
Disconnect Switches - 30 through 100 Amp, 3-Pole
Solid State Relays - 25, 45 and 75 Amp
Duct Sensor for Modulating Thermostat
Outside Wall
Large building ventilation system
air heater for preheat or stand
alone heating system.
No Diffuser For In-Line Duct Installation
2007 CK.indd : 12/07
King Electrical Mfg. Co. 9131 10th Ave South, Seattle WA 98108 ph: 206-762-0400 fax: 206-763-7738
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MODEL CK PLENUM INSTALLATION INSTRUCTIONS
TESTED AND APPROVED BY ETL TESTING LABORATORIES No 500505
CAUTION: Turn off power source for the heater before attempting installation, maintenance or
repairs. Lock, tape or tag circuit breaker or fuse so that power cannot be turned on by accident.
Failure to do so could result in personal injury or shock.
INSPECT HEATER: Remove heater from carton and check to be sure blower wheel is free-turning,
and that element assemblies are in place. Be sure filter is in proper position and not torn or damaged.
Control Wiring: Connect thermostat to terminals R
and W for heating, and to R and G for cool air only.
This can be done with a single stage heat-cool thermostat or a single stage heat only thermostat and
a separate fan only switch to control the fan-relay
(optional). Some models have two stage operation
(optional) and are provided with terminals W1 and
W2. If a single stage thermostat is used it should
be connected to terminals R and W1 and a jumper
wire installed from terminals W1 to W2; see enclosed
control circuit wiring diagram.
The model CK Air Heater plenum installation is a special application heater for use in the space created between a finished concrete ceiling and a drop type t-bar ceiling, an area normally hidden from
view.
The heater is mounted horizontally with the integral suspension bracket provided in an area where
service access can be readily maintained.
Safety screens are provided at both the air intake and discharge aperture. Fixed air directional louvers
are standard.
A 24 volt control thermostat with a maximum temperature setting of 100º F will prevent operation of the
unit should the ambient rise above 100º F. - the maximum ambient for which the heater is intended to
operate.
King Electrical Mfg. Co. 9131 10th Ave South, Seattle WA 98108 ph: 206-762-0400 fax: 206-763-7738
2007 CK.indd : 12/07
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MOUNTING: When the model CK unit is to be used in a return air plenum, the heater is to be mounted, as shown, in a vertical space of not less than 24” allowing for at least 1½” of clearance along the
uppermost portion of the heater and a minimum of 2½“ along the bottom of the heater. ½” diameter
mounting holes are provided as shown in dimensional diagram. Do not store combustible materials in
the immediate area in which the heater is desired to operate.
2 HOUR RATED CONCRETE CEILING
OPEN SPACE ABOVE CEILING
USED FOR AIR PLENUM
EXHAUST
DROP TYPE T-BAR CEILING
ARMSTRONG OR CELOTEX 2’ X 4’ LAY IN TILE CEILING OR EQUAL
CLASS A NON-COMBUSTIBLE 0-25 FLAME SPREAD
Maintenance & Warranty
Top View
The high quality and superior design of this unit will
enable years of maintenance free performance.
The filter should be replaced at a minimum of once
a year depending upon the environment the heater
is located in, some environments may require 2 to
3 times a year.
The CK Plenum heater carries a 5 year extended
Side View
warranty for the heating elements only. All other
components are covered for one year. The warranty requires that the owner, or his agent, install
the equipment in accordance with the National
Electrical Code, any other applicable heating or
Dimension:
20”H x 16”W x 33½”D
electrical codes, and the manufacturer’s installation instructions.
2007 CK.indd : 12/07
King Electrical Mfg. Co. 9131 10th Ave South, Seattle WA 98108 ph: 206-762-0400 fax: 206-763-7738
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CK Plenum Heater
Replacement Parts List
CK Plenum Heater Replacement Parts
ITEM
STOCK ORDER #
1
60T11-313198
4000-51-E07AE15
4000-09-E07K999
2
4000-03-E07J999
4000-51-E07K999
4000-04-E07J999
KBDPC50A24VCOIL
3
KBDPC40A24VCOIL
15SH1-309571
4
5
ELD-5-034 Low Voltage Terminal Block
275-3228-00
6
9100233Q999
Furnace Blower Small
7
Furnace Blower Large
120-8T-DD-.50PP
8
DAO-3GJ005
DAO-3GJ007.5
9
DAO-3GJ010
DESCRIPTION
Auto Limit Control 175°
Low Voltage Transformer 40VA 120/24
Low Voltage Transformer 40VA 208-240/24
Low Voltage Transformer 40VA 277/24
Low Voltage Transformer 40VA 380/24
Low Voltage Transformer 40VA 480/24
Contactor 50 Amp 3-Pole 24V Coil
Contactor 40 Amp 3-Pole 24V Coil
Fan Delay Switch
Air Intake Temperature Control
Dual Speed Fan Relay
Replacement Motors and Blowers
Blower-Small use with ¼ HP Motor
Blower-Large use with ½ HP Motor
Blower-Large use with ½ HP Motor
FE1026S ¼ HP Motor 240V
FEH1026S
FE1056S
FEH1056S
¼ HP Motor 480V
½ HP Motor 240V
½ HP Motor 480V
Capacitor 5MF 370V
Capacitor 7.5MF 370V
Capacitor 10MF 370V
WT.
.04
1.48
1.25
.10
.04
.30
.36
10.8
11.8
15.1
9.5
13.6
.24
.30
.30
ELEMENT
kW
1.0
1.6
2.0
2.5
3.0
3.3
4.0
4.16
5.0
6.0
7.0
8.0
8.33
10.0
WT.
3.8
4.6
5.5
208V Part #
ELE-10KW208V
240VPart # 480V Part #
ELE-1KW240V
ELE-2KW240V
ELE-2.5KW240V
ELE-3KW240V
ELE-3.3KW240V
ELE-4KW240V
ELE-4.16KW240V
ELE-5KW240VELE-5KW208V
ELE-6KW240V
ELE-7KW240V
ELE-8KW240V
ELE-8.33KW240V
ELE-10KW240V
ELE-1KW480V
ELE-1.6KW480V
ELE-2KW480V
ELE-2.5KW480V
ELE-3KW480V
ELE-3.3KW480V
ELE-4KW480V
ELE-4.16KW480V
ELE-5KW480V
ELE-6KW480V
ELE-7KW480V
ELE-8KW480V
ELE-8.33KW480V
ELE-10KW480V
2007 CK.indd : 12/07
King Electrical Mfg. Co. 9131 10th Ave South, Seattle WA 98108 ph: 206-762-0400 fax: 206-763-7738
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