Install Instructions

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INSTALLATION INSTRUCTIONS

69- 1526

Static Pressure Control (SPC)

APPLICATION

The Static Pressure Control (SPC) is an adjustable,

single-pole double-throw differential pressure switch. It is

used to control a floating-type modulating damper for

bypass zone applications. Acceptable dampers are

MARD and CDO-51 or the 90-second ML6161 Actuator.

The contacts are rated at 125 VA. See Fig. 1.

INSTALLATION

Selecting the SPC Mounting Location

Locate the SPC near the supply air ductwork. Fig.

1 shows the dimensions in in. (mm).

Orient it with the adjustment screw on the top as

shown in Fig. 2.

Use the supplied bracket and hardware.

Fig. 1. SPC dimensions in in. (mm).

Fig. 2. Correct mounting orientation.

Mounting the SPC

Mount the SPC near the supply ductwork in the

upright position.

Install one threaded barb fitting into the lower pres-

sure port as shown in Fig. 3.

Attach the supplied tubing to the barbed fitting.

Drill a 1/2 in. hole into the ductwork and insert the

supplied surface mount duct fitting.

Seal it with a small amount of silicone sealant and

attach with the two supplied self-tapping screws.

Connect the opposite end of the tubing to the

barbed end of the duct fitting.

4-1/16 (103)

(127)

M19018

GREY SPRING

ON-OFF

INDICATOR

SWITCH

RANGE SCALE

ADJUSTMENT/INDICTOR

M19019

GREY SPRING

Summary of content (4 pages)

PAGE 1
Static Pressure Control (SPC) INSTALLATION INSTRUCTIONS APPLICATION The Static Pressure Control (SPC) is an adjustable, single-pole double-throw differential pressure switch. It is used to control a floating-type modulating damper for bypass zone applications. Acceptable dampers are MARD and CDO-51 or the 90-second ML6161 Actuator. The contacts are rated at 125 VA. See Fig. 1. RANGE SCALE ADJUSTMENT/INDICTOR GREY SPRING ON-OFF INDICATOR SWITCH INSTALLATION Selecting the SPC Mounting Location 1. 2. 3.
PAGE 2
STATIC PRESSURE CONTROL (SPC) SPC C NC NO MARD OR CDO-51 COM / M1 CL / M6 VENT (LEAVE OPEN) OP / M4 PRESSURE CONNECTION TO BOTTOM CHAMBER MODEL PMT-40 24 VAC TRANSFORMER LINE VOLTAGE M19022 M19020 Fig. 5. Wiring SPC to control CDO-51 or MARD damper in bypass application. Fig. 3. Installing threaded barb fitting into lower pressure port. SETTINGS WIRING The SPC is adjustable from 0.1 in.wc to 4.0 in. wc with a 10-15 percent null range. The factory setting is 0.1 in. wc.
PAGE 3
STATIC PRESSURE CONTROL (SPC) TROUBLESHOOTING If the SPC does not operate as specified in the Checkout procedure, see Table 1. Table 1. Troubleshooting. Problem SPC does not operate the damper. Possible Trouble Solution Problem with the tubing. Verify that the tubing is not kinked or plugged. Wired incorrectly. Verify the wiring. Bypass damper closes as zones are satisfied. Incorrectly wired damper. Verify that the N.C. and N.O. are correctly wired to the damper.
PAGE 4
STATIC PRESSURE CONTROL (SPC) Home and Building Control Home and Building Control Honeywell 1985 Douglas Drive North Golden Valley, MN 55422 69-1526 G.H. 03-01 Honeywell Limited-Honeywell Limitée 35 Dynamic Drive Scarborough, Ontario M1V 4Z9 Printed in U.S.A. on recycled paper containing at least 10% post-consumer paper fibers. www.honeywell.