Nortec Steam Humidifiers User Manual
RESDELUX
Steam Humidifiers
Installation, Operation,
Maintenance and
Troubleshooting Guide
IMPORTANT: READ AND SAVE THESE INSTRUCTIONS. This
guide to be left with equipment owner.
Form 03-58 1505691 REV. A
Table Of Contents
INSTALLATION 1
RECEIVING & UNPACKING EQUIPMENT ................................1
PRE-INSTALLATION CHECKPOINT ...................................1
HUMIDIFIER CONFIGURATION......................................1
LOCATION & MOUNTING .........................................1
HUMIDIFIERS .............................................1
STEAM DISTRIBUTOR NOZZLE (in duct location) ..........................2
STEAM HOSE INSTALLATION.....................................3
CONDENSATE HOSE (supplied)....................................3
BLOWER PACK CONNECTION ....................................3
CABINET MOUNTING THEBLOWER PACK ............................3
REMOTE MOUNTING THEBLOWER PACK ............................4
PLUMBING .................................................5
WATER SUPPLY LINE .........................................5
DRAIN LINE...............................................5
ELECTRICAL................................................6
ELECTRICAL REQUIREMENTS FOR PERMANENTLY CONNECTED RESDELUX .........6
ELECTRICAL REQUIREMENTS FOR THE CORD CONNECTED MODEL RESDELUX/C ......6
LOW VOLTAGE CONTROL WIRING AND INSTALLATION ......................6
CONTROL WIRING ........................................6
CONTROL INSTALLATION ....................................7
OPERATION 7
INTRODUCTION ..............................................7
RESDELUX OPERATION .........................................7
MANUAL CAPACITY ADJUSTMENT .................................8
OTHER POTENTIOMETERS .....................................8
MAINTENANCE 8
STEAM CYLINDER ............................................8
WHEN TO REPLACE THE STEAM CYLINDER ............................8
HOW TO REMOVE THE STEAM CYLINDER .............................9
HOW TO INSTALL THE REPLACEMENT CYLINDER ........................9
MANDATORY CLEANING OF THE DRAIN VALVE ...........................10
EXTENDED SHUTDOWN ........................................10
TROUBLESHOOTING 11
DIAGNOSTIC PROCEDURES - TROUBLESHOOTING .........................11
PROCEDURES AND TERMS USED IN DIAGNOSING .........................11
PRINCIPLE OF OPERATION .....................................12
FILL RATE ...............................................12
DRAIN TIME ..............................................12
RATED AMPERS ...........................................12
SHORT CYCLING ...........................................12
FOAMING ...............................................12
BACKPRESSURE ...........................................12
MONITORED LEG...........................................12
RESDELUX WIRING DIAGRAM .....................................13
SUGGESTED WIRING INTERFACE FOR FAN CONTROL .......................14
SPARE PARTS LIST AND EXPLODED VIEW ............................15-16
PERIODIC MAINTENANCE CHECKLIST ................................17
INSTALLATION
Wall
HUMIDIFIER CONFIGURATION
RECEIVING & UNPACKING EQUIPMENT
1. Check packing slip to ensure ALL material has
been delivered.
2. All material shortages are to be reported to
NORTEC within 48 hours from receipt of goods.
NORTEC assumes no responsibility for any
material shortages beyond this period.
3. Inspect shipping boxes for damage and note on
shipping waybill accordingly.
4. After unpacking, inspect equipment for damage
and if damage is found, notify the shipper
promptly.
5. All NORTEC products are shipped on an F.O.B.
factory basis. Any and all damage, breakage or
loss claims are to be made directly to the
shipping company.
PRE-INSTALLATION CHECKPOINT
1. Ensure that available voltage and phase
corresponds with humidifier voltage and phase
as indicated on humidifier’s nameplate label.
2. Ensure that the dedicated external disconnect
switch is of sufficient size to handle the rated
amps as indicated on the nameplate label. Refer
to local codes.
To avoid any danger, never operate the
humidifier with a door off.
To open the door, use the key to unlock, lift door
up slightly and pull door forward.
LOCATION & MOUNTING
HUMIDIFIERS
RESDELUX Series humidifiers are designed to
mount on a suitable wall or vertical surface. Do not sit
on the floor due to additional clearances required for
plumbing, electrical, and control access holes. The
clearance dimensions shown in this manual are for
reference only and are the minimum required for
maintenance of the humidifier. Local and National
Codes should be consulted prior to final location and
installation of the humidifier. NORTEC does not
accept responsibility for installation code violations.
1. Location of the humidifier should be below and
as close as possible to the steam distributor
location or blower pack. Net output will be
reduced as a result of heat loss through long
steam hose.
2. See Figure #2 for front clearance requirements
for access during installation, maintenance and
troubleshooting.
Figure #2
Clearance Requirements
3. Report any discrepancy immediately.
Figure #1
RESDELUX Series Humidifier
Condensate
Return
Steam
Outlet
Nameplate
Label
Drain
Water
Supply
PowerAnd
Control
Wiring
NOTE: Localand national
codes may deviate. Please
consult applicable codes
for clearance requirements
3. Where possible, mount humidifier at a height
convenient for servicing.
4. To mount the humidifier use two #8 screws, 2”
long, and secure into a standard 2”X4” wood
stud or equivalent structure.
5. Make sure humidifier is level.
-1-
Min. 36"
Frontal
Clearance
Figure #3
Wall Mounting Detail
the duct. Remove internal insulation material if
necessary. (See Figure #5).
Fasten HumidifierTo
WallUsing Screws2” long
(2) suppliedby other
Wall
0.6”
(1.6 cm)
12.1” (30.7cm)
A
6. DO NOT mount humidifier on hot surfaces.
7. DO NOT mount humidifiers in an area where
freezing may occur.
8. DO NOT mount humidifiers on a vibrating surface.
10. DO NOT mount the humidifier to a duct or plenum.
STEAM DISTRIBUTOR NOZZLE (in duct location)
1. When installing the steam distribution nozzle of
the RESDELUX humidifier it must be located in
the supply duct at least 4 feet from any
obstructions such as bends, fans, filters, etc. to
prevent wetting (see figure #4).
Figure #4
Steam Distributor Nozzle in Duct Location
Figure #5
Steam Distribution Nozzle Mounting Arrangement
3. When the steam distribution nozzle is located
above the top surface of the humidifier: The
nozzle must be at least 1 ft (305 mm) above the
top surface of the humidifier. Locate the steam
hose so that it slopes at an angle of at least 20°
(Figure #6).
Figure #6
Steam Plumbing Arrangement Above Humidifier
min. 2º min. 10º
min. 10º
12” min. (300 mm)
Rmin.
12” (300 mm)
12” (300 mm)
Min. 12”
2. The steam distribution nozzle can be mounted in
the bottom wall or on the vertical walls of the duct.
If the duct wall is more than 3/4" (20 mm) thick, the
nozzle will have to be mounted from the inside of
6” min (150 mm)
To be 2” (50mm) longer
then duct static pressure
or minimum.
NHB, NHP, NHMC,
RESDELUX ONLY
4. Steam distribution nozzle below top surface of
humidifier: The steam hose must first rise to the
minimum height of 1 ft (305 mm) above the top
surface of the humidifier and thereafter slope a
minimum 5° in a uniform manner toward the
nozzle. A separate drain line must be provided for
condensate that collects at the steam distribution
nozzle (Figure #7).
-2-
Nortec
Humidifier
Figure #7
Avoid W
Steam Plumbing Arrangement Below Humidifier
min. 2º
min. 10º
3. Avoid condensate traps in the hose, see Figure
#8.
4. Use wall clips (p/n 158-5001) to support the
steam and condensate hoses and maintain 1”
clearance from the wall. The connection can also
be made with ¾” copper pipe with 1” thermal
insulation rated for 215°F (101°C).
To be 2” (50mm) longer
then duct static pressure
or minimum.
min. 20 %
m
”
6
12” (300 mm)
min. 10º
12” min. (300 mm)
)
m
m
0
(15
in
m
”
6
min. 2º
min. 20 %
12” min. (300 mm)
)
m
m
0
5
(1
in
Nortec Humidifiers
All Models
12” (300 mm)
Rmin.
Nortec Humidifiers
0
5
(1
in
m
”
6
min. 10º
All Models
)
m
m
12” (300 mm)
12” (300 mm)
STEAM HOSE INSTALLATION
1. The length of the steam hose must not exceed 4’
(1.2m).
CONDENSATE HOSE (supplied)
Under normal circumstances, when the steam
distribution nozzle is above the top surface of the
humidifier, the condensate hose is routed back to the
top of the humidifier and fed through the opening
provided to the fill cup. Cut the ends diagonally and
simply insert ½" in the appropriate hole in the top of
the humidifier. Install a 3/8” copper tubing trap at the
lowest point in the condensate system. Connect to the
hose with a clamp Figure #6.
BLOWER PACK CONNECTION
The RESDELUX humidifier can be purchased with
an optional blower pack for direct room humidification.
The blower pack is field installed on the RESDELUX
humidifier cabinet or located remote from the
RESDELUX humidifier.
The blower pack is powered directly from the
RESDELUX control board. It cannot be powered
separately.
On a call for humidity, blower fans are powered
and remain powered for about two minutes after steam
production is interrupted.
Cabinet Mounting of the Blower Pack
2. It must not be restricted in any way (i.e. - a kink
resulting from a short radius bend).
Figure #8
Steam Hose Routing
Avoid kinks
aterTraps
Gentle
Sweeping
Turns
Proper
Slope
The RESDELUX blower pack comes with a basic
hardware kit. The kit contains all the hardware
required to cabinet mount the blower pack.
NOTE: Mounting of the blower pack must be
performed before the RESDELUX humidifier is
installed and wired.
1. Remove the RESDELUX humidifier and blower
pack from their shipping boxes.
2. Place the RESDELUX humidifier upright on a flat
surface.
3. Remove the 7/8” knockout on the top of the
RESDELUX humidifier. There are two
knockouts, select the one closest to the large
opening.
-3-
4. Put the power leads from the blower pack through
S
this opening as you position the blower pack on
top of the RESDELUX humidifier
5. Push the blower pack forward until the locating
tabs on the bottom of the blower pack with slots in
the top of the RESDELUX push forward to engage.
6. Use two Phillips screws with star washers in the
Blower Pack screw support tabs to secure to the
RESDELUX unit.
7. Remove the front door and service cover from the
RESDELUX humidifier.
8. Connect the power leads for the blower pack to
terminal P7 on the RESDELUX control board
located next to the capacity adjustment
potentiometer.
9. Use the short piece of steam hose and hose
clamps supplied with the basic hardware kit to
connect the steam cylinder to the blower pack
steam distributor.
Installation of the blower pack is now complete.
For instructions on mounting the RESDELUX
humidifier please see the location and mounting
section.
Figure #9
Blower Pack Cabinet Assembly
switched off at the electrical panel, or that it is
unplugged (RESDELUX/C).
3. Find a suitable location for mounting the remote
blower pack. The surface should be flat with
adequate clearances for the top, side, and front:
Table #1
Clearances of Remote Mounted Blower Pack
Minimum Ceiling
Clearance
inches (cm)
Minimum Side
Clearance
inches (cm)
Minimum frontal
Clearance
inches (cm)
18” (45) 18” (45) 60” (150)
4. Minimum slope of steam hose is 20°. Steam lines
longer than 5 ft require condensate trap installation
(see Figure #6).
5. RESDELUX blower pack has two teardrop (or
keyhole) openings on the back of the cabinet for
mounting purposes. They are located 8 ¼” apart,
and 1” from the top of the blower pack cabinet.
6. Measure the screw locations and use two #8
screws, 2” long. The screws should be anchored in
a standard 2” x 4” wood stud or equivalent to
ensure adequate support of the blower pack and
connecting steam hose.
7. Remove the 7/8” knockout on the top of the
RESDELUX humidifier and insert the closed finger
grommet into the opening.
Remote Mounting of the Blower Pack
1. The remote mounted blower pack should be
located at least 7’ off the floor to prevent the
discharged steam from coming in contact with
pedestrian traffic or any obstruction.
2. When installing the remote blower pack, ensure
the primary voltage to the RESDELUX has been
8. Put the power leads from the blower pack through
this opening. If the wire leads are not long enough
field splice the additional requirement, or get a wire
extension kit (P/N 1502326) available from
NORTEC.
Figure #10
Steam Absorption Distances
team absorption space size in inchesfor ambient humidity
30% RH, room temperature and selected steam outputs of
RESDELUX humidifier.
H
W
F
0”
Steam Output F W H
4 lbs/hr 36" 12" 12"
6 lbs/hr 42" 16" 18"
8 lbs/hr 48" 18" 18"
-4-
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