L.B. White 322 Norseman - Horizontal - Manual (Page 12)

Service Instructions
12
The servicing of burner related components such as burner
orifice, pilot orifice, thermocouple, and pilot tubing may be
accomplished by referring to the Burner and Gas Control
Assembly Instructions and illustrations provided within this
manual. The assembly procedures may be reversed for
disassembly and servicing of burner related components.
ATTENTION
When performing any service work, it is necessary to adhere
to the following guidelines:
■
Always close the fuel supply valves to the heater.
■
Allow the heater to cool before servicing
■
Leak check all gas connections after performing service
work. Use approved leak detectors.
■
Use only a soft brush, dry rag, or compressed air to
clean the burner and pilot orifices.
■
Do not push instruments into burner or pilot orifice
holes. Doing so may enlarge or distor t the holes
creating improper combustion, pilot outages, or burner
flames extending beyond the heater case.
■
Ensure the pilot orifice screen is installed prior to orifice
assembly. Its purpose is to trap contamination that
would prevent the pilot orifice from operating properly.
■
D o n ot u s e p l i e r s to l o o s e n o r t i g h te n h e a te r
components. Doing so may round off the component
creating service problems. Always use the appropriate
wrench.
Gas Pressure Checks
ATTENTION
This procedure is to be done once a year prior to the heating
season, anytime the heater is moved from one job location
to the next, or after servicing the heater.
MATERIALS REQUIRED
(To be secured through local purchase)
Quantity Description
1 High Pressure Gas Gauge capable of
reading up to 35 PSIG
1 1/4 in. Tee
1 1/4 in. Nipple
A. PREPARATION
1. Close fuel supply valve at LP gas supply container.
2. Allow heater to burn off gas remaining in it’s gas
supply line..
3. Close manual main burner valve on heater.
4. Remove gas hose from heater.
5. Remove hose adapter from inlet of pilot safety control
valve.
B. GAUGE INSTALLATION
1. Connect the following materials together in the order
as given. See Fig. 13
-- Tee to inlet of pilot safety control.
-- Nipple to tee.
-- Hose adapter (as removed earlier) to nipple.
-- Gas hose to hose adapter.
2. Connect gauge to tee.
3. Tighten all connections securely.
WARNING
■
Do not disassemble the pilot safety control valve.
■
Do not attempt to replace any components of the pilot
safety control valve.
■
The pilot safety control must be replaced if any
physical damage occurs to it.
■
Failure to follow this warning will result in fire or
explosions, leading to injury or death, and building
damage.