TOA Electronics 600 installation instructions Lhp

Step 5. Millivolt Appliances -

Honeywell Systems

a. Convert the gas valve as follows (see Figure 67): 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

Step 6. Electronic Appliances -

Honeywell Systems

See Figure 68 and the instructions provided with the kit. Remove the slotted cap screw, o- ring, pressure-regulating adjusting screw and spring. Retain all parts for possible later use. Install new components from the kit. Black cap and red spring for propane gas units. Silver cap and stainless steel spring for natural gas units. Before installing the cap, attach manometer to the manifold side pressure test fitting and adjust screw until pressure reads 3.5 inches water column (0.87 kPa) for natural gas, and 10.0 inches water column (2.49 kPa) for propane gas.

Pilot

PilotAssembly

Orifice

Ignitor

Assembly

	Retaining
Flare Nut	Clip

Note: If the ignitor is damaged, a replacement kit is available - order Catalog Number 87L54.

Adjusting Knob

Regulator Cap

Conversion screw

(blue natural gas; red LP/propane gas)

Figure 67

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

CONTROL OFF ON

IGNITE

Manifold

Pressure

Test Port

Slotted Cap

Inlet Pressure Test Port

I

IS

P

Spring

Adjusting

Screw

Figure 69

All Models

Step 7. Remove the orifice from the mani- fold and replace it with the one provided with the kit. See the following table for orifice sizes for natural and propane models. Figure 70 illustrates the orifice.

D, DT,	Orifice Size
DR Series
	Natural	Propane
500	0.090 in.	#54

(2.49 kPa) for propane gas.

c. Convert the pilot orifice as follows (refer to Figures 64, 65 and 66 ):

Note - Use extra care not to engage the orifice strip with the 7/16" open end wrench (contact- ing the orifice strip could cause strip distortion rendering the pilot inoperative). Also avoid wrench contact to any of the other pilot parts.

Use a 7/16" open end wrench and turn the pilot hex fitting counter-clockwise 1/4 turn. (refer to Figure 64 ).

Note - The orifice strip tab may be randomly located on any side of the hex fitting.

d.Push the orifice strip tab all the way against the hex fitting to align the appropriate gas type orifice (refer to Figures 65 and 66). The type of gas for which the pilot is set, is, the gas type shown on the tab.

e.Retighten, clockwise, the pilot hex fitting until the pilot hood aligns with the thermo- couple and thermopile as indicated by the arrows shown in Figure 64.

Figure 68

See Figure 69 and replace the pilot orifice as follows: Remove the ignitor assembly retainer clip, and carefully remove the ignitor assem- bly. Exercise extreme care to prevent dam- age to or breakage of the ignitor assembly. Remove the screw securing the pilot assembly to its mounting bracket. Back off the flare nut at the end of the pilot gas line to free the pilot assembly from the gas line.

Remove the pilot orifice and replace it with the one provided with the conversion kit. Reinstall the pilot assembly by reversing the steps de- tailed here.

When reinstalling the ignitor assembly, use extreme care to prevent damage and break- age. Do not apply any leverage to the ignitor assembly while restoring the retainer clip to its original position.

600	#36	#52
800	#33	0.065 in.

Figure 70

Step 8. Reassemble all removed components by reversing the procedures outlined in the preceding steps. Use pipe joint compound or Teflon tape on all pipe fittings before installing (ensure propane resistant compounds are used in propane applications, do not use pipe joint compounds on flare fittings).

Step 9. Attach the conversion label provided in the conversion kit to the rating plate on the appliance.

Step 10. Turn on gas supply and test for gas leaks.

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

The manufacturer reserves the right to make changes at any time, without notice, in design, materials, specifications, prices and also to discontinue colors, styles and products. Consult your local distributor for fireplace code information.

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