Superior DR-400 Installation Instructions Manual page 27

Pilot for SIT Millivolt Gas Valve
Pilot
Orifice
Figure 60
b. Attach manometer to the manifold side
pressure test fitting and verify manifold pres-
sure reads 3.5 inches water column (0.87 kPa)
for natural gas, and 10.0 inches water column
(2.49 kPa) for propane gas.
c. Refer to Figure 60 and remove the pilot
hood assembly to access the hexed pilot ori-
fice. Remove and replace the orifice with the
one provided with the kit.
Step 5. Millivolt Appliances -
Honeywell Systems
a. Convert the gas valve as follows ( see Figure 61 ) :
Remove the plastic protecting cap. Remove the
gas type setting screw by turning it counter-
clockwise. Obtain the replacement gas type
setting screw from the kit and screw it into
place (red for propane and blue for natural gas).
Tighten the gas type setting screw by turning it
clockwise. Replace the plastic protecting cap.
Honeywell Millivolt Gas Valve
Adjusting Knob
Regulator Cap
Conversion screw
(blue natural gas;
red LP/propane gas)
Figure 61
Pilot for Honeywell Millivolt Gas Valve
(Loosening of Hex Fitting For Orifice Strip Tab Positioning)
Hood
7/16 in. Open End Wrench
Orifice Strip Tab
Figure 62
Pilot for Honeywell Millivolt Gas Valve
LP/Propane Gas Position -
1/16 in. Hole, LP and
Red Color shown on tab
Figure 63
Top View of Hex Fitting and Orifice Strip Tab
Pilot for Honeywell Millivolt Gas Valve Orifice Strip Tab Positioning
Figure 64
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
Take Care Not to Contact the Orifice Strip Tab
with the Hex Fitting Wrench - Distortion of the Tab
May Render the Pilot Inoperative.
Orifice Strip Tab Position Identification
For LP/Propane and Natural Gas
Natural Gas Position -
Pilot Hood Position After
Loosening Hex Fitting 1/4 Turn
Orifice Strip Tab
Push Tab to Set
Gas Type Usage
Note - Orifice Strip Tab May
Be Randomly Located On Any
Side Of The Hex Fitting
Hood Alignment
NAT shown on tab
27