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(Supersedes PE432-1)
PE432-2
CVCH, CVCHS
161-058123-001
APRIL, 1999
4
and
Installation, Operation
RENEWAL PARTS IDENTIFICATION
Type CVCHS Circulation Heaters
© 2010 Chromalox, Inc.
Specifications – Table A
GENERAL
WARNING: This heater is not intended for use in haz-
ardous atmospheres where flammable vapors, gases,
liquids or other combustible atmospheres are present
as defined in the National Electrical Code. Failure to
comply can result in explosion or fire.
The CVCHS is a clean solution or corrosive solution circulation
heater ideally suited for sidearm heating, in-line circulation and
engine preheaters.
The INCOLOY
®
sheathed tubular heating element is centered in
a CPVC pipe body. This material is a good thermal insulator in
reducing heat loss and eliminating the need for support jackets. Its
screwplug type mounting provides easy removal when necessary.
The CVCHS has a stainless steel flange.
An integral 60° — 180°F range thermostat is provided to control
outlet temperatures. However, this control does not fail-safe.
Therefore automatic reset (195°F) cutout is provided.
WARNING: Users should install adequate back-up
controls and safety devices with their electric heat-
ing equipment. Where the consequences of failure
may be severe, back-up controls are essential.
Although the safety of the installation is the respon-
sibility of the user, Chromalox will be glad to make
equipment recommendations.
Figure 1
Dimensions (In.)
Model Volts Phase kW A B
CVCHS-151 120 1 1.5 17
5
/16 12
3
/8
CVCHS-151 240 1 1.5 17
5
/16 12
3
/8
CVCHS-201 120 1 2.0 17
5
/16 12
3
/8
CVCHS-201 240 1 2.0 17
5
/16 12
3
/8
CVCHS-251 120 1 2.5 21
5
/16 16
3
/8
CVCHS-251 240 1 2.5 21
5
/16 16
3
/8
CVCHS-301 120 1 3.0 21
5
/16 16
3
/8
CVCHS-301 240 1 3.0 21
5
/16 16
3
/8
INSTALLATION
WIRING
WARNING: Hazard of Shock. Any installation involv-
ing electric heaters must be effectively grounded in
accordance with the National Electrical Code to
eliminate shock hazard.
1. Be sure line voltage matches heater voltage (on nameplate).
2. Electric wiring to heater must be installed in accordance with
local and National Electrical Codes by a qualified person as
defined in the NEC.
3. Remove terminal cover by backing out screw in center of cover
and feed wires through the conduit bracket.
4. Connect one wire to the pigtail lead and one to the unused ther-
mostat terminal. Note: Do not disturb the existing jumper wire.
5. To set thermostat, turn the slotted screw at top of thermostat
counter-clockwise until flat side is facing terminals. This is the
“OFF” position.
Next, turn the slotted screw clockwise until slot in screw points
to the desired temperature shown on scale. Note: Scale is
marked in increments of 60°F. Replace terminal cover. (See
Figure 3)
WARNING: Hazard of Shock. Disconnect all power
before installing heater.
1. When the CVCHS Circulation Heater is vertically mounted, the
terminal housing will be at the top of the heater.
2. When mounting the heater horizontally, the outlet pipe must be
up. This is to prevent any inadvertent drainage of the heater.
3. No additional support other than the connecting pipes is needed.
4. Make piping connections to either new or existing plumbing at the
1” x 11
1
/2” N.P.T. threaded inlet and outlet as shown in Figure 1.
5. DANGER: Hazard of Fire. Provide minimum of 6” spacing
from chamber and related piping to nearest combustible materi-
al. Avoid operation of heater near combustible fluids or in com-
bustible vapor or gas laden atmosphere.
6. Provide adequate space at terminal end to permit withdrawal of
the heater from chamber should servicing be required.
TURN SLOT TO
DESIRED SETTING
180
120
60
7
/8” Opening for
1
/2” Conduit
1” NPT Outlet
A
B
2
1
/2” Dia.
4”
1” NPT
Inlet
Figure 3
Figure 2
Indicates
Customer
Wiring
Pigtail Lead
Element
Ground
Thermostat
Wire Nut
By Customer
Cutout
L2
L1