6
INSTALLATION
UNPACKING AND INSPECTION
1. Inside the cabinet is an envelope containing the
following items:
A. Keys to the humidifier cabinet
B. Steam hose clamps
C. Condensate return line clamps
D. Drain pipe fitting
E. Installation, operation and maintenance manual,
yellow caution sheet for hose routing, replacement
parts list and spec sheet
F. Keys to unlock the humidifier cabinet
2. Open the cabinet and check for concealed shipping
damage. Report any damage immediately to the carrier
who delivered the shipment.
3. The following components are packed in a shipping
carton for connection when installing the humidifier.
A. Distribution pipe
B. Steam hose
C. Condenstate return line
4. Optional accessories may be packed with the cabinet
or in the same shipping carton. Large accessories may
ship in separate cartons.
MOUNTING THE HUMIDIFIER
Locate the humidifier cabinet level and plumb, using
the level screws (
Photo B
) on a surface as close to the
steam distributor as possible at a convenient height for
servicing. Allow 12” or more on each side for panel access
and 16” from the bottom of the unit to floor to allow for drain
connections. If there is no common drain within close
proximity of humidifier, a drain pump (Carnes HXWA) may
be required to accommodate this distance. Allow 18” in
front of single cylinder cabinets and 38” for dual cylinder
cabinets to allow for opening and removal of the cabinet
door.
SUPPLY WATER CONNECTION
A 3/8” FPT fitting is provided at the bottom of the humidifier
for connection to tap water supply (top of the humidifier for
HRAA). A shutoff valve, not provided by Carnes, must be
installed just ahead of this fitting.
SUPPLY WATER GUIDELINES
Use ordinary cold tap water (20 to 120 psi) -
DO NOT use
hot water, DI (deionized water), RO (reverse osmosis)
water. Using mechanically softened water, or tap water
with conductivity over 800 Micromhos is not recom-
mended.
Supply water quality is a very important factor
on how a humidifier functions and how often it will need to
be maintained. There are many substances in untreated
water. When water is boiled into steam, it creates a scale
build-up that is left behind in the cylinder. These substances
left behind continue to change the properties of the supply
water. Having corrosive supply water can decrease the
service life of the humidifier and the cylinder. Also using
excessively hard supply water can increase maintenance
requirements. It’s recommended using a water supply that
has a total water hardness between 50-120 (ppm) parts per
million. Corrosion caused by high amounts of chlorides or
other corrosive substances in the supply water can cause
damage and rapid corrosion to the cylinders electrodes and
humidifier. It’s recommended using a water supply that has
< 50 ppm of measured chlorides.
DRAIN LINE CONNECTION
1. Locate the drain pipe fitting in the accessory bag
included with the unit. Have proper tooling available to
attach the drain pipe.
2. Connect the drain pipe fitting to the cabinet drain hole
on the bottom of the unit (Refer to
Photo B
).
3. Connect the drain pipe fitting to an S or P trap. Use
plumbing material capable of handling hot water.
Include a 1” air gap fitting as part of the drain plumbing.
See
Photo B
.
Note:
If the drain water pump accessory package is
used, follow instructions included with the drain water
pump package.
Model Fasteners
Required
H_AH
4
H_DH
4
H_GH
4
H_HH
6
Table 2 -
FASTENER RECOMMENDATION*
*1/4” Lag Screw, 1” Minimum Length
Fasten the mounting bracket to wood studs or solid wood
using fasteners shown in fastener recommendation below.
Place the mounting flange on the humidifier cabinet over
the mounting bracket. A sheet metal screw should be
installed through the back of the humidifier cabinet to
secure the humidifier to the mounting bracket. Fasteners
are not provided by Carnes.
Model Pounds
H_AH
61
H_DH
72
H_GH
110
H_HH
203
Table 1 -
MAXIMUM OPERATING WEIGHT
The humidifier must never be located outside or where it
may be exposed to freezing temperatures unless a heated,
ventilated weather proof enclosure by others is provided.
Do not mount humidifiers on a hot or vibrating surface.
Photo B
Leveling
Screws
Call Carnes to
purchase an air gap.
(P/N 690-0176)
NOTE:
Drain Pipe
is NOT an air gap fitting.
An air gap fitting
must be included
in drain plumbing
setup (non-Carnes
installation).
See picture:
