Bosch Appliances HDS256U, HDS255U, HDS252U Connect Gas Supply, Test for Gas Leaks

Step 5: Connect Gas Supply

Important note for LP users: The range is shipped from the factory for use with natural gas. For use with propane (LP) gas, your range must first be converted using the LP conversion kit at this time.

The gas connection is located below the back panel of the range (See Figure 4, Page 4). It is accessible through the warming drawer access panel or from the back of the range. To reach access panel, remove warming drawer.

Shut off main gas supply valve before disconnecting the old range and leave it off until the new hook-up has been completed. Don’t forget to relight the pilot on other gas appliances when you turn the gas back on.

The range can be installed using rigid pipe or a CSA International- certified flexible metal appliance connector. If using a flexible connector, always use a new connector.

Apply pipe joint compound orTeflon* tape appropriate for use with LP gas and Natural gas around all male pipe threads to prevent leaks.

If not already present, install gas shut off valve in an easily accesible location. Make sure all users know where and how to shut off the gas supply to the range.

Note: The installer should inform the consumer of the location of the gas shut-off valve.

Flexible Connector Method (see Figure 11, this page)

1.Install male 1/2” flare adaptor at the 1/2” NPT internal thread of the range inlet. Use a backup wrench on the elbow fitting to avoid damage.

2.Install male 1/2” or 3/4” flare union adapter on the NPT internal thread of the manual shut-off valve.

3.Connect flexible metal appliance connector.

4.Make sure circuit breaker is off and then plug range cord in to electrical outlet.

5.Push range back into position insuring that range leg slides under the anti-tip bracket. The range will sit 3/4” away from the wall when properly installed. Note: Be careful not to crimp flexible connector!

6.Carefully tip range forward to insure that anti-tip bracket engages and prevents tip-over.

Rigid Pipe Method (see Figure 12, this page)

The configuration of the rigid pipe connection will vary depending on the location of the gas pipe stub. Refer to Figure 12 for details.

1.Make sure circuit breaker is off and then plug range cord in to electrical outlet.

2.Push range back into position insuring that range leg slides under the anti-tip bracket. The range will sit 3/4” away from the wall when properly installed.

3.Carefully tip range forward to insure that anti-tip bracket engages and prevents tip-over.

4.Connect pipe to range at union. Access the connection through the access panel behind the warming drawer.

Note: Be careful not to apply pressure to warming drawer element during rigid pipe installation.

Test for Gas Leaks.

Leak testing is to be conducted by the installer according to the instructions given in this section.

Turn on Gas. Apply a non-corrosive leak detection fluid to all joints and fittings in the gas connection between the shut-off valve and the range. Include gas fittings and joints in the range if connections were disturbed during installation. Bubbles appearing around fittings and connections indicate a leak.

If a leak appears, turn off supply line gas shut-off valve and tighten connections. Retest for leaks by turning on the supply line gas shut-off valve. When leak check is complete (no bubbles appear), test is complete. Wipe off all detection fluid residue. Proceed to Step 6: Test the Installation

CAUTION

NEVER CHECK FOR LEAKS WITH A FLAME.

DO NOT CONTINUE TO THE NEXT STEP UNTIL ALL LEAKS

ARE ELIMINATED.

CAUTION: Before you plug in an electrical cord, be sure all controls are in the OFF position.

Gas Shut-Off
Valve
Regulator	Flexible
	Connector

Figure 11: Flexible Connector Method

elbow	gas shut off valve	elbow
nipple
union		nipple
nipple
elbow:
connect to	1/2” to 3/4”
regulator here	gas pipe
	GasFlowtoRange

Proceed to “Test for Gas Leaks”, next column. Figure 12: Rigid Pipe Method Page 6