12 Notification Appliances—CH Series Chimes and Strobe Chimes
Refer to Figures 3 through 6 when installing units. Use mounting
option D for CH-BF models. Use mounting option B for CH-CF models. Use mounting
option A or C for CH-DF models. Order plates and backboxes separately. Special plates
and backboxes are indicated in the illustrations and described in Table 10.
!
CAUTION:
Equipment damage hazard. The National Electrical Code
(NEC) Article 370-6 limits the maximum number of
conductors that can enter a backbox based on the size of the
backbox and the size of the wiring used. Johnson Controls
recommends that you adhere to the conductor limitations
shown in the tables following each mounting option.
Johnson Controls also recommends that you use a 2-1/8 inch deep extension ring added to
the 4 inch square backbox where possible to provide additional wiring room for easy
installation.
General mounting instructions:
1.
Select the largest backbox possible to provide additional wiring room for easy
installation (Figures 3 through 6).
2.
Select the conduit entrance to backboxes to ensure sufficient wiring clearance for
installed equipment. When extension rings are required, the conduit should enter
through the backbox, not the extension ring. Use Steel City No. 53151 x 1-1/2 inch
deep or No. 53171 x 2-1/8 inch deep extension rings or the equivalent with same
area cut out in back.
Note:
If a sheathed multiconductor cable or 3/4 inch conduit fitting is used, check that
the installed product has sufficient clearance and wiring room prior to installing
the backboxes and conduit.
!
CAUTION:
Equipment damage hazard. Check the installation
instructions of the manufacturers of other equipment used in
the system for any guidelines or restrictions on wiring and/or
locating signaling circuits and signaling devices.
DB B -R
4 in ch S quare
x 2-1 /8 inch
Deep B ackbox
c h _A
S trobe/C H-D Chim e
4 in ch S quare x 1-1/2 inch
Extension Ring
(2 ) No. 8-32 Sc rews
Figure 3: Flush Mounting (Option A)
Table 6: Mounting Option A Conductor Limitations
Mounting
Mounting Option A
