Lochinvar Copper-Fin II CX401, Designer'S Manual, Page: 13 / 32

Powered Sidewall Vent Kits
Models CH401-751 utilize a powered vent cap
which has a fan mounted inside the cap. The
powered vent cap
must be placed on an
exterior wall. The powered sidewall vent cap
and accessories are included in a venting kit,
which
must be furnished by Lochinvar in
accordance with CSA International requirements.
This venting kit includes the powered sidewall
fan/cap, proving switch and all necessary relays
to interlock with the water heater control system.
Models CH991-2071 utilize an inline fan,
which is positioned on the inside of the sidewall
and connected to a vent hood mounted on the
sidewall exterior. The inline fan and accessories
are included in a venting kit, which
must be
furnished by Lochinvar in accordance with CSA
International requirements.
This venting kit includes the inline fan, exterior
vent hood, a tapered vent adapter, barometric
damper, proving switch and all necessary relays
to interlock with the water heater control system.
The connection from the vent to the sidewall
fan/powered vent cap
must be made with
listed Type “B” double wall
(or equivalent) vent and accessories. The installer
supplies this vent pipe material.
For models CH401-751, maximum total
equivalent length of the vent pipe cannot
exceed 50 equivalent feet (15.24 m).
Models CH991-2071 allow a maximum
total equivalent length of 100 feet (30.48 m).
Subtract 5 feet (1.52 m) for each elbow in the
vent.
Powered DirectAire ® Horizontal
This vent system requires the installation of
two vent pipes directly to the unit, one pipe
for flue products and one for combustion air.
Both vent pipes are installed horizontally with
a sidewall termination point. The vent
connection is made directly to the top of the unit
and utilizes either the powered vent cap or inline
fan as described in the power side wall venting
section.
L o c h i n v a r
D E S I G N E R
’
S G U I D E C O P P E R
-
F I N I I B O I L E R
6 1 5 - 8 8 9 - 8 9 0 0
11
(TABLE D) – POWERED SIDEWALL VENT KIT PART NUMBERS
MODEL FLUE SIZE SIDEWALL VENT
NUMBER CAP KIT
CH401 6 ” SVK3006
CH501 6 ” SVK3006
CH651 8 ” SVK3008
CH751 8 ” SVK3008
CH991 10 ” SVK3009
CH1261 12 ” SVK3010
CH1441 12 ” SVK3011
CH1801 14 ” SVK3012
CH2071 14 ” SVK3012
(FIG. 11) POWERED DIRECTAIRE ® HORIZONTAL
(POWERED VENT CAP SHOWN)
3’
12”