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50027910-001
Differential Pressure Switch
APPLICATION
The differential pressure switch senses changes in
duct air pressure to confirm air movement, providing
a safeguard that airflow is present during the
operation of installed IAQ equipment.
Fig. 1. Pressure switch.
INSTALLATION INSTRUCTIONS
Rubber Grommet
Tubing Fitting Elbow
Tubing, 1/4 in. ID
Differential Pressure Switch (Fig. 1)
Screws, #8 x 3/4 in. sheet metal
Terminal Adaptor
SPECIFICATIONS
SPST: normally open, snap-acting contacts
Pressure setpoint contacts: change at 0.04 in. W.C.
Electrical
M27300
5 amp resistive @ 24VAC
One common (C), One Normally Open (NO) quick-
connect terminals
Operating Temperature: -40F to 190F (-40C to 88C)
Pressure Sample Taps
Black positive pressure tap. 1/4 in. outside diameter
Grey negative pressure tap. 1/4 in. outside diameter
Use with 1/4 in. inside diameter tubing (10 ft pro-
vided)
Table 1. Parts Included.
Item
M27302
M27323
Quantity
2
2
10 ft
1
2
2
69-2205-03
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Summary of Contents for Honeywell Home 50027910-001
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Page 1: Installation Instructions
50027910-001 Differential Pressure Switch INSTALLATION INSTRUCTIONS APPLICATION Table 1. Parts Included. Item Quantity The differential pressure switch senses changes in duct air pressure to confirm air movement, providing a safeguard that airflow is present during the Rubber Grommet operation of installed IAQ equipment. - Page 2 50027910-001 DIFFERENTIAL PRESSURE SWITCH 4-13/64 (107) 2-1/64 (51) 3-13/16 (97) 1-19/32 (41) 5/64 FULL Ø3/16 3/16 3-15/16 Ø3-1/4 (100) (83) [2] 1/2 (13) [2] 1/4 (6) NEGATIVE PRESSURE 27/32 PORT (21) POSITIVE PRESSURE PORT COMMON (C) TERMINAL 1/4 (6) X 1/32 (1) THICK...
- Page 3 50027910-001 DIFFERENTIAL PRESSURE SWITCH G OR W AIR PROVING DEVICE HumidiPRO INSIDE OF DUCT OUTDOOR SENSOR POWER IN CONNECT TUBING TO + CONNECTION IF PRESSURE TAP IS MOUNTED TO SUPPLY DUCT. CONNECT TO – IF PRESSURE TAP IS MOUNTED TO RETURN DUCT.
- Page 4 69-2205—03 M.S. Rev. 04-19 | Printed in United States This product is manufactured by Resideo Technologies, Inc., Golden Valley, MN, 1-800-633-3991 ©2019 Resideo Technologies, Inc. The Honeywell Home trademark is used under license from Honeywell International Inc. All rights reserved.
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