Bock Water heaters ezFIT Installation And Operation Instruction Manual page 6

VENTING (cont.)
Table 2: Power Vent Terminal Clearances
DRAFT HOOD, DAMPER AND REDUCER COLLAR ASSEMBLY
Your Bock water heater is equipped with a vent hood, reducer collar and an electronic flue
damper. This system has been specifically designed to give your Bock water heater exceptional
reliability and safe operation. The draft hood, damper and reducer collar must be assembled
and installed as shown in Figure 3. Note: Substitution, elimination or relocation of any
of these components will result in unsafe operation and void the warranty of your
water heater. Refer to the instruction sheet provided with the damper for more detail on
Figure 4
3. Attach damper harness (4 pin connector) to the damper.
4. Install the draft hood on top of the damper assembly. The draft hood should fit snugly over
the corrugated section on top of the damper.
Following installation on the water heater, make sure the draft hood and damper assembly are
clear of obstructions. Clear visibility to this area is required for determination of damper posi-
tion. A clearance of 24" from the front of the damper is required for access for service.
Page 6
36 inches (91 cm)
36 inches (91 cm)
damper operation and troubleshooting.
1. Align the hole in the rear of the damper base with
the hole in the tab on the reducer collar. Insert the
smooth end of the damper base into the reducer collar
and secure in place with a sheet metal screw (provided)
through the damper base and collar tab.
2. With the damper arm oriented toward the front of
the heater, slide the reducer collar squarely over the
flue. Make certain that the arm does not interfere with
hot water piping and that the damper harness can safe-
ly reach the damper.
Atmospheric Gas