11
ROBERTS
-
GORDON
Fuel Conversion Instructions
This appliance has been con
v
e
rt
ed to _______ fuel.
Or
ifice:
__________________________________
Manif
o
ld Pressure:
__________________________
Input:
____________________________________
Cet appareil a ete con
v
e
rti au:
________________
Injecteur
:
________________________________
Pression a la tub
ulure d'alimer
tation:
____________
Debit calor
ifique:
__________________________
Pr
inted in the U
.S
.A./
Impr
imé aux Etats-Unis
P/N 91039400
©
Install Label
Here
P/N 91039400
FIGURE 5. CORAYVAC
®
Label Placement
Setting the Vacuum
a. Set thermostats above room temperature. See that all burners are
operating properly.
b. Allow at least one-half hour operation for temperature to normalize,
then check system vacuum balance. Vacuum can be measured by
connecting a manometer to the end vent as shown on
Page 12, Figure
6. Normal end vent vacuum should be set at approximately 2 1/2" w.c.
(hot).
Vacuum adjustments are made by means of the damper in the pump
inlet and the adjustable damper coupling(s) in the system. Check the
vacuum at all end vents and then adjust the damper coupling to obtain
equal vacuum readings of 3 1/2" w.c. or slightly above, then adjust the
pump inlet damper until vacuum readings are a minimum 2-3" w.c.
Step 5