18
4 screws used to temporarily attach the collar to the exterior
wall. Then secure the vent cap assembly with the vent collar
assembly to the exterior wall using the same 4 screws.
NOTE: Screws are supplied; however, substitution may be
necessary depending on the exterior wall material.
FIGURE 91
19. Move indoors to complete the assembly process.
20. Collapse the 6” vent extension pipes as shown below and
install the 3” extension by first slipping the end with the
O-ring approximately 1 1/4” into the end of the vent cap.
Lock the other end of the 3” extension assembly to the
studs in the elbow.
FIGURE 92
NOTE: To facilitate ease of assembly of the vent cap to the
3” pipe, a soap solution can be applied to the O-ring
gasket
.
FIGURE 93
21. Using a #22 drill bit, drill holes 180
°
apart at the connection
point of the two 3” flue extensions. Then using 2 screws
provided, lock these pipes together.
FIGURE 94
22. Now the 6” vent extension pipes can be expanded to
connect at the vent elbow.
FIGURE 95
23. Pull the vent collar from the elbow to be against the wall
and secure it using the screws provided.
FIGURE 96
24. Lock the 6” vent extension to the vent elbow by using two
screws provided, placing them 180
°
apart.
FIGURE 97
OPERATION
NEVER OPERATE THE HEATER WITHOUT FIRST BEING
CERTAIN IT IS FILLED WITH WATER AND A TEMPERATURE AND
PRESSURE RELIEF VALVE IS INSTALLED IN THE RELIEF VALVE
OPENING OF THE HEATER. DO NOT ATTEMPT TO OPERATE
HEATER WITH COLD WATER INLET VALVE CLOSED.
FILLING
1. Close the heater drain valve (Fig. 1) by turning handle
clockwise.
2. Open a nearby hot water faucet to permit the air in the
system to escape.
3. Fully open the cold water inlet pipe valve (Fig. 1) allowing the
heater and piping to be filled.
4. Close the hot water faucet as water starts to flow.
5. The heater is ready to be operated.
HIGH ALTITUDE INSTALLATIONS
WARNING
INSTALLATIONS ABOVE 2,000 FT. REQUIRE REPLACEMENT OF
THE BURNER ORIFICE IN ACCORDANCE WITH THE NATIONAL
FUEL GAS CODE (ANSI Z223.1/NFPA 54). FAILURE TO
REPLACE THE ORIFICE COULD RESULT IN IMPROPER AND
INEFFICIENT OPERATION OF THE APPLIANCE, PRODUCING
CARBON MONOXIDE GAS IN EXCESS OF SAFE LIMITS, WHICH
COULD RESULT IN SERIOUS PERSONAL INJURY OR DEATH.
CONTACT YOUR GAS SUPPLY FOR ANY SPECIFIC CHANGES
WHICH MAY BE REQUIRED IN YOUR AREA.
A. O. Smith builds models specifically for high altitude service.
Please check the rating plate before making changes.
