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.
Pilot for Honeywell Millivolt Gas Valve
(Loosening of Hex Fitting For Orifice Strip Tab Positioning)
Hood | Hood Alignment |
7/16 in. Open End Wrench
| Orifice Strip Tab |
| Take Care Not to Contact the Orifice Strip Tab |
Figure 62 | with the Hex Fitting Wrench - Distortion of the Tab |
May Render the Pilot Inoperative. | |
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| Pilot for Honeywell Millivolt Gas Valve |
| Orifice Strip Tab Position Identification |
| For LP/Propane and Natural Gas |
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
LP/Propane Gas Position -
1/16 in. Hole, LP and
Red Color shown on tab
L
P
Natural Gas Position -
NAT shown on tab
NAT
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 |
Figure 63 | Top View of Hex Fitting and Orifice Strip Tab |
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| Pilot for Honeywell Millivolt Gas Valve Orifice Strip Tab Positioning |
| 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 |
Figure 64 | Side Of The Hex Fitting |
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NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
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