L.B. White I-40 Infraconic Ignition - Manual (Page 16)

1166
SCREW
RETAINING
CLIP
THERMOCOUPLE
INJECTOR
BODY THERMAL
FUSE
VEN
TUR
I TU
BE
■
This heater has two orifices.
■
Remove only one orifice at a time for cleaning.
Reinstall the orifice before proceeding to clean the
other orifice.
■
If orifices are reversed combustion characteristics of
the heater will change on low fire.
1. Remove the thermocouple from gas control valve and
screw from injector body.
2. Pull the injector body from the venturi tube to allow
access to primary and secondary orifices.
FIG. 16
3. Using a 6 mm hex nut driver, remove an orifice and
clean if necessary. When reinstalling, do not
overtighten as thread damage may occur.
FIG. 17
BURNER ORIFICES
BYPASS ORIFICE
MAIN ORIFICE
INJECTOR BODY VIEWED FROM ORIFICE END
SECONDARY ORIFICE
PRIMARY ORIFICE
ATTACHMENT
KNOB
THERMOSTATIC
HEAD
THERMOSTATIC HEAD
Individual Control Heaters & Modulating Zone Panels
■ The following service instructions are the same on
individual control or zone control heaters.
■ The head assembly includes the adjustable
thermostatic head, capillary and sensor. The part
numbers for the thermostatic heads are:
-- Zone panel head: Part No. - 09416
w/ 26 ft. capillary
-- Individual control head: Part No. - 09415
w/ 6 ½ ft. capillary
The head assembly would need to be replaced if damage
occured because of:
-- Careless handling during installation, cleaning or
servicing.
-- Locating the sensor and capillary too close to floor
or ground level, allowing contact with livestock.
The symptom of component failure would be the heater not
operating from high heat to low heat after the thermostatic
head is adjusted to a low temperature requirement. If this
occurs, refer to the following instructions:
1. Loosen the attachment knob located at the
thermostatic head and valve body and discard head.
See Fig. 15.
2. Securely tighten the knob of the replacement head to
the valve body, otherwise temperature sensing will be
affected.
FIG. 15