PP904A and B Differential
Pressure Regulators
INSTALLATION INSTRUCTIONS
BEFORE INSTALLATION
CAUTION
Equipment Damage Hazard.
Putting stress on the lever assembly can destroy the
accuracy. Do not move or lift the PP904 by the lever
assembly.
Do not remove the shipping protection until after the device is
permanently mounted. See Fig. 1.
Special Equipment
Magnehelic Gage of appropriate range, if not part of the
system.
Fig. 1. PP904A and B shipping protection
(PP904B shown).
LEVER ASSEMBLY
SHIPPING
PROTECTION
FOAM
SHIPPING
TIES
M18381
® U.S. Registered Trademark
Copyright © 2002 Honeywell • All Rights Reserved
INSTALLATION
Mounting
1.
Mount the device in any position using four no. 10
screws obtained locally. See Fig. 2.
2.
Remove the cover.
3.
Remove the shipping protection foam between the flap-
per and the nozzle. See Fig. 1.
4.
Cut and remove the two shipping ties.
FOUR
NO. 10
SCREWS
A
C
8-1/4 (210)
2-1/4
(57)
9 (229)
PIGTAILS (PP904A ONLY)
2-1/2 (63) MIN.
CLEARANCE
FOR COVER
REMOVAL
4-1/8
(105)
8-1/8 (206)
PIGTAILS (PP904A ONLY)
C3952
Fig. 2. PP904A and B approximate
dimensions in in. (mm).
95-5519EF
