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HONEYWELL MODEL 700/800 SIGNAL PROCESSOR AND VIEWING HEAD
21 66-2069—02
Fig. 13. Viewing Head Mounting Example.
Fig. 14. Viewing Head Mounting Example.
Mounting Examples
Purge air should be provided via the purge air connection to
reduce conducted heat and to keep the sight pipe and viewing
head lens free of dirt and debris. Refer to “Purge Air” on
page 8 for requirements. For electrical isolation reasons, the
purge air line should be installed using and insulating material,
such as a rubber hose, in between the purge air line and the
viewing head. Note that an extension pipe may be required to
locate the viewing head further from the burner front plate to
avoid high temperatures. Additionally, an Ultem replacement
insulating mounting block is available for all models, which is
rated for 320F (160C) continuous service. Also available are
cooling jackets which are used with vortex coolers. The
Honeywell Ultem R-518-13 nipple or R-518-PT13/R-518-
PT13L locking coupler adapter and R-518-CL13-HTG locking
coupler can also be used for heat insulation reasons. Refer to
the Accessories section of this document for accessory part
numbers.
1 (25) NPT NIPPLE TOE
700-1 SWIVEL MOUNT
BURNER FRONT PLATE
M34537
1/4 (6) NPT PURGE
CONNECTION
S70X VIEWING HEAD
QUICK DISCONNECT
CABLE CONNECTION
(SUPPLIED)
M34538
1/4 (6) NPT PURGE
CONNECTION
S70X VIEWING HEAD
QUICK DISCONNECT
CABLE CONNECTION
(SUPPLIED)
BURNER FRONT PLATE
OR WINDOWBOX
1/2 (13) NPTM PIPE
FLANGE
(OPTIONAL)