2-10. Operating the Heater and Regulating the
NOTE
The burner fuel metering valve is a heat control
Heat Output
and not a fuel shutoff valve.
a. Check the air being delivered after the heater
c. R e g u l a t e t h e f l o w o f h e a t e d a i r b y m e a n s o f
h a s been in operation at least 15 minutes. The air
the discharge opening dampers ( p a r a 2 - 4 f ) .
should be warm or hot.
C l o s i n g the dampers should not be necessary except
b. Regulate the heat output. Heat output may be
in temperatures below 32 F.
regulated, f r o m m a x i m u m c a p a c i t y t o a b o u t
CAUTION
40% of the maximum capacity, by manual ad-
Do not attempt to regulate the heat
j u s t m e n t of the burner fuel metering valve (para 2-
o u t p u t and the flow of heated air except
4c).
