Setra System SRPM - Manual (Page 7)

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3.0 INSTALLATION (See Section 8.0 for overview)
The SRPM is designed to be mounted on a standard double gang metal
electrical box using a 4 x 4 inch plaster ring adaptor. After the rough in
wiring and plumbing is performed remove the cover and mount the baseplate
to the plaster ring adaptor using the supplied 6-32 x 1/2” long mounting
screws. Note: The plaster ring external mounting face needs to be positioned
fl ush to recessed, relative to the surface of the wall. Also note the orientation
of the 4 mounting screws in the plaster ring, as the plaster ring is rotated
90° from conventional mounting.
Note: In the following wiring sections, abbreviations are used (e.g. J1, P3).
Please see section 8.0 for complete wiring diagrams with abbreviations.
3.1 WIRING ELECTRICAL BOX (ROUGH IN)
Layout the system in terms of wiring: power, annunciator, analog output,
BACnet, relay output and plumbing to connect to the monitored spaces
(pressure taps).
Bring all power, earth ground, signal, communications and analog output
wiring into the 4x4 electrical box.
Bring 1/4” O.D. tubing for 3/6” Barb fi tting into box.
In order to conform to the CSA safety standard the electrical installer must
comply with the following earth ground instructions. Pre-wire the electrical
box with power (24 VAC or 120/240), and provide earth grounding to the
electrical box. The safety ground path consists of four 6-32 x 1/2” metal
screws that connect the SRPM metal base to the 4½ x 4½ metal plaster
ring. The plaster ring must be grounded to the 4½ x 4½ electrical box by 2
metal mounting screws. The 4½ x 4½ electrical box must be connected to
the building earth ground. It is also highly recommended to use armored
cable (Type AC) for all the wiring in applications where high levels of radio
interference may be present.
Electrical Box
4 x 4 inch Plaster Ring 4 x 4 inch Plaster Ring
(Rotated 90°) (Rotated 90°)
SRPM Metal Base SRPM Metal Base
SRPM Cover
For 120/240 VAC Version, only
CAUTION: Do not open or remove SRPM cover (tool required) with input power ap-
plied unless performed by a licensed electrician. “Hazardous Live” voltage is present at
connector J3 when power is applied. Please observe the warning symbol ( ) near the
J3 power connector.
!
connector J3 when power is applied. Please observe the warning symbol ( ) near the connector J3 when power is applied. Please observe the warning symbol ( ) near the connector J3 when power is applied. Please observe the warning symbol ( ) near the !