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INSTALLATION INSTRUCTIONS
Figure 8
Draft Regulator (Barometric Damper Control)
This device is used for conventional chimney vent-
ing only. It automatically maintains a constant nega-
tive pressure in the chimney to obtain maximum
efficiency. It ensures that proper pressures are not
exceeded. If the chimney does not develop suffi-
cient draft, the draft control cannot function properly.
When installed, the draft regulator should be located
in the same room or enclosure as the water heater
and not interfere with the supply of combustion air to
the oil burner.
WARNING
The water heater must be connected to a flue
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having sufficient draft at all times to ensure safe
and proper operation of the appliance. The flue
outlet pressure (measured between the water
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heater and draft regulator) should be set to -0.02
inches w.c. Failure to provide sufficient draft for
this water heater could result in property damage,
personal injury or death.
Flue Collar/Blocked Vent Switch Assembly
(Installation and Operation)
This water heater has been shipped from the factory
with a flue collar/blocked vent switch assembly. This
switch is designed to detect flue gas spillage due
to a blocked flue, continuous down drafting or
inadequate draft condition.
WARNING
All wiring must be installed by a qualified installer
in accordance with all local codes or, in the
absence of such codes, the latest edition of the
CSA C22.1, Canadian Electrical Code, in Canada,
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and/or the latest edition of the National Electrical
Code, NFPA 70, in the United States. Before
installing the switch, remember to DISCONNECT
THE POWER SUPPLY to the water heater.
Failure to follow these instructions can result in
property damage, personal injury or death.
Installation:
1) Install the pre-assembled flue collar/blocked vent
switch assembly over the flue outlet on the water
heater (see Figure 9).
2) Wire the switch to the aquastat on the water
heater (see wiring diagram in Figure 11).
3) Install the vent pipe onto the flue collar and
secure it using sheet metal screws (not supplied).
Operation:
With the switch wired to the aquastat circuit, it will
shut down the burner once it senses the spillage of
hot flue gas. The switch will not allow the burner to
restart until it has been manually reset. In order to
manually reset the switch:
1) Wait for the vent pipe to cool down.
2) Insert the end of a pencil or square head screw
driver into the opening for the reset (see Figure
9) and depress the red reset button.
Optional Sidewall Venting (Power Vent)
This water heater is approved in Canada for use with
the Tjerlund SS1C side shot power venter and in the
United States with the Tjerlund SS1 side shot power
venter. This power vent kit is available through
major HVAC supply companies. Technical support is
offered by Tjerlund, not by the manufacturer of this
water heater.
WARNING
When the installation is complete, visually inspect
the venting system to make sure that all joints are
properly connected and all instructions have been
followed. Failure to properly install the venting
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system could result in property damage, personal
injury or death.
7
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