Lanair DHI 300 User Manual
Page 43
Section 2 - Heater Installation
QUESTIONS?... Contact Customer Service at 1-800-753-1601 M-F 8:00 am- 4:15 pm CST
10
TYPICAL INSTALLATION:
HEATER/CHIMNEY PACKAGE
Through the wall installation
Figure 1
Section 13 - Service / Maintenance
Visit our website at: www.lanair.com
43
Fuel By-Pass Regulator
Diaphragm Replacement
1.
Disconnect power to the heater.
2.
Remove the locking nut and adjusting
screw from the by-pass regulator
assembly.
3.
Disassemble the by-pass regulator and
discard the small plug, spring, large
plug, washer and diaphragm.
4.
Thoroughly clean and dry remaining
parts.
5.
Re-assemble using new small plug,
spring large plug, washer and
diaphragm (Kit P/N 9874).
NOTE: Pay close attention to the posi-
tions of the large and small plugs.
adjusting screw
locking nut
cap
small plug
spring
large plug
washer
diaphragm
body
Fuel By-Pass Regulator Assembly
1. Chimney Cap
2. Chimney Pipe
3. Clean-out Tee
4. Wall Thimble
5. Barometric Damper
6. Black Pipe
7. Burner
8. Blower Assembly
9. Secondary Air Regulator
10. Primary Air Regulator
11. Duct Connectors
12. Fuel Line
13. By-pass Regulator
14. Oil Strainer
15. Pump Assembly
16. Oil Storage Tank
17. Thermostat
18. Power Supply