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CSD-1 control system — Natural gas
Part Number 550-110-677/0299
5
Install optional vent damper (if supplied)
If not installing a vent damper, proceed to next section
(Piping connections).
Once a vent damper has been
operated on an EGH boiler, the boiler
will no longer operate without a
damper installed.
Only dampers listed in the
Replacement parts list in this
Supplement are certified for use with
EGH Series 4 boilers. Any other
damper installed could cause severe
personal injury or death.
Minimum clearances — Provide a minimum of 6" between
the damper and any combustible material. (Provide a
minimum of 46" between EGH jacket top and a
combustible ceiling.)
Damper must be installed directly on
top of draft hood so that it serves
only that boiler. DO NOT modify
draft hood or damper, or make
another connection between draft
hood and damper or boiler. This will
void AGA/CGA certification and will
not be covered by Weil-McLain
warranty. Any changes will cause
severe personal injury, death or
substantial property damage.
Install damper directly on top of draft hood, with arrow
pointing straight up. Install so the damper blade indicator
is visible to the user. See Figure 2.
Screws or rivets used to secure the damper to the vent
pipe and the draft hood must not interfere with rotation
of the damper blade.
Install damper harness between damper actuator and
knockout in right top of boiler jacket. Knock out opening
in jacket top and install strain relief bushings in jacket
and actuator wiring openings. Insert wires and secure
strain relief clamps. See Figure 6, 8, or 10 as applies.
Keep wiring harnesses clear of all hot
surfaces.
Figure 2
Vent damper assemblies
Effikal damper
Johnson Controls damper
677-05
Damper
blade
indicator
Hold-open switch (Effikal only) —
Install damper so that switch is
visible and accessible to user.
Read and apply the harness plug warning label (above)
so that it is visible after installation.
Remove dummy plug from damper connector in boiler
wiring harness. Plug damper harness receptacle into
damper harness plug. See Figure 6, 8, or 10 as applies.
By-passing (jumpering) damper will
cause flue products such as carbon
monoxide to escape into the house.
This will cause severe personal injury
or death.
After boiler has operated once, if
either end of harness is disconnected,
the system will shut down. The boiler
will not operate until the harness is
reconnected.
Keyway Key
677-10
WARNING
LINE UP KEYWAY WHEN
CONNECTING PLUGS.
FORCING A MISMATCH
CAN CAUSE A
HAZARDOUS CONDITION.