Specifications

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

(Rotated 90°)

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