Armstrong World Industries EHU-703 User Manual
PRE-INSTALLATION
1) CHECK SHIPMENT
A claim should be filed with the transportation company (and reported to Armstrong) if any items
are missing or damaged. Your shipment will arrive in two or three cartons.
One carton holds the humidifier with the steam generator installed, the control humidistat and
sensing element, two short steam hoses, hose clamps, mounting plate and lag screws, and a
clear drain hose. If you have ordered a duct pressure switch or a high limit stat, these too will
be in the humidifier carton.
sensing element, two short steam hoses, hose clamps, mounting plate and lag screws, and a
clear drain hose. If you have ordered a duct pressure switch or a high limit stat, these too will
be in the humidifier carton.
The steam dispersion tube(s) and fittings are contained in another carton ( two for the EHU 704).
Two complete sets of
installation instructions have
been shipped with your unit.
One is for the installer's use.
The second is for the owner's
files.
installation instructions have
been shipped with your unit.
One is for the installer's use.
The second is for the owner's
files.
2) CHECK LOCAL CODES
Series EHU-700 humidifiers
should be installed in
accordance with ALL
applicable building, plumbing,
and electrical codes.
should be installed in
accordance with ALL
applicable building, plumbing,
and electrical codes.
3) SITE SELECTION
Electronic steam humidifiers
must be installed in locations
that allow routine inspection
and accessibility for maintenance
operations. See Figures 4-1 & 4-2
for access space.
must be installed in locations
that allow routine inspection
and accessibility for maintenance
operations. See Figures 4-1 & 4-2
for access space.
Do not place electronic steam humidifers
in locations where unusual instances of
malfunction of the humidifier or the
system might cause damage to
non-repairable or un-replaceable,
or priceless property.
in locations where unusual instances of
malfunction of the humidifier or the
system might cause damage to
non-repairable or un-replaceable,
or priceless property.
4
4" Side
Clearance
Both Sides
Clearance
Both Sides
5" Min. Drain
Connection Access
Connection Access
24" Min. Steam
Generator
Tank Removal
Generator
Tank Removal
4" Side
Clearance
Clearance
24" Front
Clearance
Clearance
5" Min. Drain
Connection Access
Connection Access
24" Side
Clearance
Clearance
Figure 4-2. EHU-703/704
Figure 4-1. EHU-701