Master TENTEvent125 TB116A Owner's Manual page 16

Replacing Ignitor
1. To loosen back panel and gain access
to ignitor, follow step 1 under Replacing
Burner, page 15. Due to lack of working
area, burner assembly may be removed
to gain access to ignitor electrode, see
Replacing Burner, page 15.
2. Remove ignitor bracket screw and lift
ignitor.
3. Attach new ignitor with ignitor mounting
screw removed in step 2.
4. Install new ignitor. Ignitor gap between
ignitor electrode and burner deck is
0.10"/0.12" (2.5/3.0 mm).
5. With gas supply shut off, test for spark.
Plug into extension cord and watch for
spark between ignitor electrode and
burner deck.
Figure 14 - Ignitor Gap
Replacing Gas Orifice
1. Hold burner flange and rotate orifice
counterclockwise to remove.
2. Install new orifice
IMPORTANT: CHECK FOR GAS LEAKS. Test
all gas piping and connections for leaks after
installation or servicing. Never use an open
flame to check for a leak. Apply a noncorrosive
leak detection fluid to all joints (available at lo-
cal plumbing supply stores). Bubbles forming
show a leak. Correct all leaks at once.
REPlACING DSI CONTROl
1. Remove top and side panel (see Top
Panel Removal, page 14).
2. Disconnect orange ignitor wire.
3. Remove white wire connector.
4. Remove 2 screws and nuts securing DSI
control.
5. Install new DSI control. Reconnect wiring.
16
Ignitor Gap
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Service
Continued
REPlACING GAS VAlVE
1. Remove top and side panel (see Top and
Side Panel Removal, page 14).
2. Disconnect 2 blue wires.
3. Remove gas line.
4. Remove 2 screws and nuts holding valve
to mounting plate.
5. Remove brass fittings from old gas valve.
If damaged replace with new fittings.
Install fittings into new gas valve. Use
pipe joint sealant that is resistant to liquid
petroleum (LP) gas. Tighten all fittings.
6. Install new gas valve using screws and
nuts from step 4.
7. Connect blue wires to new gas valve.
8. Reconnect gas line.
IMPORTANT: CHECK FOR GAS LEAKS. Test
all gas piping and connections for leaks after
installation or servicing. Never use an open
flame to check for a leak. Apply a noncorrosive
leak detection fluid to all joints (available at lo-
cal plumbing supply stores). Bubbles forming
show a leak. Correct all leaks at once.
CHECKING REGUlATOR
PRESSURE
1. Remove top and side panel (see Top
Panel Removal, page 14).
2. Locate pressure tap on solenoid valve and
remove (retain plug for later installation).
See Figure 15, page 17.
3. Install 1/8 NPT barb fitting with sealant on
threads into solenoid valve.
4. Connect to manometer or pressure gauge
that measures in inches of water.
5. Connect hose and regulator to heater and
tank.
6. Plug in and turn on.
120942-01E