Airstream 18 - Manual (Page 16)

16
BTU'S PER GAUGE PRESSURE (PSI) NATURAL GAS MODELS (APPROXIMATE)
LOW TEMPERATURE
7
383040
6
353860
5
322850
4
289100
3
250800
2
205200
1
144100
Operating Pressure (PSI)
Diameter
18"
BTU'S PER GAUGE PRESSURE (PSI) PROPANE MODELS (APPROXIMATE)
2
102900
Diameter
18"
4
145970
6
181870
8
208190
10
234510
12
253660
14
275200
16
294340
18
311090
20
335020
LOW TEMPERATURE
Operating Pressure (PSI)
LTD HEATER OPERATION
1. Check to see if high limit con-
trol is in the down position.
2. Open fuel valves between tank
and heater.
3. Turn the heater power switch to
ON by toggling the ON/OFF
switch to ON position.
problems are:
a. Humidistat and /or ther-
mostat is not set high
enough.
b. Pressure regulator is not
open.
c. Supply valve is not open.
d. High limit button is not
pushed in.
4. For prolonged shutdown close the
tank or supply valve and allow
flame to burn until all the gas is
out of the line (the flame dies out).
5. If any problems occur refer to
the service section of this
manual and follow the proce-
dure described. Some common