DriSteem HUMIDI-TECH User manual

READ AND SAVE THESE INSTRUCTIONS
HUMIDI-TECH and
HUMIDI-TECH DI
ELECTRIC STEAM HUMIDIFIERS
Installation, Operation
and
Maintenance Manual
®
VM99-C-0400-M-0801.pdf 1 11/19/2009 9:51:50 AM

2
TABLE OF CONTENTS
To the purchaser and installer
Thank you for purchasing our HUMIDI-TECH®humidifier. We have designed and built this
equipment to give you complete satisfaction and trouble-free service for many years. Familiarizing
yourself with this manual will help ensure proper operation of the equipment for years to come.
This manual covers the installation and maintenance procedures for both the HUMIDI-TECH and
HUMIDI-TECH DI humidifiers.
DRI-STEEM Humidifier Company
HUMIDI-TECH humidifier overview .............................. 3
Electrical specifications, capacities and dimensions ....... 4
Installation
Locating and mounting the HUMIDI-TECH humidifier ..... 5
Piping ............................................................................... 6
Wiring .............................................................................. 7
Dispersion using space
distribution units (SDU-E and SDU-I) .......................... 8
Dispersion using dispersion tubes .............................. 11
Dispersion using a RAPID-SORB®
dispersion panel ............................................................ 12
Start-up and operation .................................................. 13
Maintenance ................................................................... 15
HUMIDI-TECH (standard water models)
trouble shooting guide .................................................. 18
HUMIDI-TECH DI trouble shooting guide .................... 19
Replacement parts......................................................... 20
Two-year limited warranty ............................................ 24
VM99-C-0400-M-0801.pdf 2 11/19/2009 9:51:53 AM

3
HUMIDI-TECH®HUMIDIFIER
Figure 3-2: HUMIDI-TECH DI humidifier
(deionized water)
The HUMIDI-TECH DI humidifier,
shown here, is specifically designed
for use with deionized or reverse
osmosis water.
Figure 3-1: HUMIDI-TECH humidifier
The standard HUMIDI-TECH unit requires
water conductivity of at least
100 µS/cm to operate. It will not
operate with water treated
by reverse osmosis or
deionization processes.
(See DI model below.)
OM-82-4
Removable
evaporating
chamber
Slide assembly under evaporating chamber
provides easy removal for cleaning
INCOLOY alloy-sheathed
immersion heaters
Removable
evaporating
chamber
Keyholes for
wall mounting
Water fill DN8 (¼")
(female)
DN40 or DN50 flexible
vapor hose connects to
dispersion tube in duct
Condensate
return line
Duct
Electrical side
Electrical
connections
DN20 (¾") coupling,
skimmer port and
overflow drain
Water fill access hole
Condensate
return line
INCOLOY alloy-sheathed
immersion heaters
Duct
Electrical side
Electrical
connection
DN40 or DN50 flexible
vapor hose connects to
dispersion tube in duct.
Slide assembly under
evaporating chamber provides
easy removal for cleaning.
Water fill access hole
Keyholes for
wall mounting
Water fill DN8 (¼")
(female)
Float cutoff switch
OM-82-5
Ball valve
DN20 (¾") coupling,
skimmer port and
overflow drain
VM99-C-0400-M-0801.pdf 3 11/19/2009 9:51:53 AM

4
SPECIFICATIONS
Figure 4-1: HUMIDI-TECH®dimensions
Table 4-1: Electrical specifications, capacities and weights
Top view
Left side view
Model
number
Steam
capacity
per hour
I max. A
kW
Shipping
weight
†
Operating
weight
†
kg /h
Single-
phase
Three-
phase kg kg
230V*** 400V
VM-2 2.7 8.0 -- 2
26
3 7
VM-4 5.4 16.0 8.7** 4
26
38
VM-6 8.2 24.0 13.0** 6
36
5 5
VM-8 10.9 31.9 17.3** 8
36
5 5
VM-10 13.6 39.9 15.2** 10
38
6 3
VM-12 16.3 47.9 17.3 12
38
6 3
VM-14 19.1 -- 20.2 14
38
6 3
VM-16 21.8 -- 23.1 16
38
6 3
VM-21 28.6 -- 30.3 21
39
69
VM-25 34.0 -- 36.1 25
39
69
VM-30 40.9 -- 43.3 30
41
71
VM-34 46.3 -- 49.1 34
41
71
Table notes:
** For wire sizing, the highest leg
draw is shown due to current
imbalance.
*** Output capacity and kW derate
of 7%
† Add the following to shipping
and operating weights for
HUMIDI-TECH options:
– SDU-I: 5 kg
– SDU-E: 4 kg
– SSR control: 1 kg
All HUMIDI-TECHs operate at 50/60
Hz. SDU-E is not an available option
on 400V three-phase HUMIDI-TECH
models drawing more than 21.7 amps
and using SSR control.
Bottom view
Venting
57 mm
409 mm
DC-1167
Front view
DN20 (¾") tank drain
DN20 (¾") frame drain
472 mm
146 mm
38 mm
Control wiring
knockout
614 mm
57 mm Power wire
knockout
16 mm
38 mm
13 mm hole in base
for water fill line
146 mm
19 mm
Steam outlet
614 mm
276 mm
57 mm Power wiring
knockout
Control or
SDU wiring
knockout
VM99-C-0400-M-0801.pdf 4 11/19/2009 9:51:53 AM

5
MOUNTING THE HUMIDI-TECH®
Electrical power supply, water make up piping and
drain piping must also be considered. Electrical
power supply connections are made at the lower or
upper right rear corner of the unit. Water makeup
and draining piping connections are made at the
lower left rear corner.
When mounting on a stud wall (studs 405 mm
centres), locate studs and position coach screws in
place so that each of the screws (405 mm apart) will
center on a stud. Mark hole locations and pre-drill
6 mm diameter pilot holes using mounting template
on the HUMIDI-TECH box. Secure frame to wall with
coach screws provided.
For hollow block or poured concrete wall mounting,
position template in place and mark the holes. Drill
appropriate pilot hole for two 10 mm toggle bolts or
two 10 mm machine bolt lead anchors. Secure frame
in place.
Locating and mounting the
HUMIDI-TECH humidifier
The HUMIDI-TECH humidifier is designed to lag bolt
to the wall, and it should be installed in a space
located near an air duct system.
Consider the following when selecting the location of
the humidifier:
• Convenient access to duct
• Electrical and plumbing connections
• Required clearances
• External water seal requirements
The mounting location should provide a minimum
clearance of 915 mm to the front and 610 mm to the
right side of the unit. This clearance is required for
removing the evaporating chamber and accessing
electrical compartment. Also, a minimum clearance
of 150 mm to the left side is required for louvers and
enclosure fasteners.
VM99-C-0400-M-0801.pdf 5 11/19/2009 9:51:54 AM

6
PIPING
Figure 6-1: Drain adjacent to wall
Water make up piping may be of any code-
approved material (copper, steel, or plastic). The
final connection size is DN6 (1/4"). In cases where
water hammer may be a possibility, a shock arrestor
should be considered water pressure must be
between 170 kPa and 582 kPa.
Drain piping may be of any code-approved material
(copper, steel, or plastic rated for 100 °C minimum).
If drainage by gravity is not possible, a small lift
pump should be used (DRI-STEEM Part
No. 400280).
The final connection size is DN20 (3/4") for drain
fitting and frame drain. This connection size should
not be reduced. (See Figures below for proper drain
piping configurations.) The evaporator drain should
be piped and discharge into a floor drain. Combin-
ing the two drain pipes into a single drain line may
result in the backflow of drain water into the humidi-
fier cabinet, causing the unit to
malfunction.
Note: Locate the cabinet drain line exit away from
the humidifier drain line exit, if possible. This will
prevent water vapor from migrating up the cabinet
drain line. Extending the cabinet drain line may also
be effective.
DN20 (¾") frame
drain (male)
Humidifier
cabinet
OM-1005-1
Figure 6-2: Drain through or in wall
50 mm
25 mm
air gap
300 mm
DN20 (¾") tank drain
(male)
OM-1006-1
50 mm
25 mm
open drain
300 mm
DN20 (¾") frame
drain (male)
DN20 (¾") tank
drain (male)
VM99-C-0400-M-0801.pdf 6 11/19/2009 9:51:54 AM

7
All wiring must be in accordance with all governing
codes, and with the HUMIDI-TECH®or HUMIDI-
TECH DI wiring diagram. The diagram is located
inside the removable subpanel cover on the right-
hand side of the humidifier cabinet. Power supply
wiring must be rated for 105 °C.
WIRING
Figure 7-1: Field wiring requirements
Note: Control wiring and power wiring must be run in dedicated
or separate earthed metal conduit, cable trays or trunking.
Grounding requirements:
The earth must be made by solid metal to metal connections.
The ground must be a good radio frequency earth. Ground wire
should be same size as power wiring.
OM-1007
Fused
disconnect, sized
per tables below.
Power
supply
cable, sized
per tables
below.
0.6 m to 1.9 m
1.7 m
preferred
(Provided by
installer)
Figure 7-2: Shielded/screened cable drain wire
connection to lug
Note: For maximum E.M.C. effectiveness, all humidity,
temperature, and airflow controls should be wired using multi-
colored shielded/screened plenum-rated cable with a drain
wire for the shield/screen. The drain wire should be
connected to the shield/screen ground terminal with its length
kept to less than 50 mm.
Shield/screen ground lug
Microprocessor
board
Right side view
of electrical
panel
lug-o&m
Table 7-3: Fuse/
breaker requirements
Note: The use
of semiconductor
fusing is
recommended
with the use of
the SSR option.
I max. A Breaker
size amps
0 - 8 10
8.1 - 10.4 13
10.5 - 12.8 16
12.9 - 16 20
16.1 - 20 25
20.1 - 25.6 32
25.7 - 32 40
32.1 - 40 50
40.1 - 50.4 63
50.5 - 64 80
64.1 - 80 100
80.1 - 100 125
100.1 - 128 160
128.1 - 160 200
Table 7-1: 230 Volt
single phase
A
Wire
size
mm2
Ground
wire size
mm2
0 - 18 2.5 2.5
18.1 - 24 4 4
24.1 - 30.7 6 6
30.8 - 42.7 10 10
42.8 - 57 16 16
57.1 - 75.7 25 16
75.8 - 93.7 35 16
93.8 - 113.2 50 25
113.3 - 144 70 35
144.1 - 174 95 50
174.1 - 201.7 120 70
Table 7-2: 400 Volt
three phase
A
Wire
size
mm2
Ground
wire size
mm2
0 - 15.7 2.5 2.5
15.8 - 21 4 4
21.1 - 27 6 6
27.1 - 37.5 10 10
37.6 - 51 16 16
51.1 - 66.7 25 16
66.8 - 82.5 35 16
82.6 - 100.5 50 25
100.6 - 128.2 70 35
128.3 - 155.2 95 50
155.3 - 179.2 120 70
Refer to the amp draw on the rating plate, and use
the following tables to determine the appropriate
wire, conduit and fused disconnect requirements.
When selecting a space to install the HUMIDI-TECH,
avoid areas close to sources of electromagnetic
emissions such as power distribution transformers.
VM99-C-0400-M-0801.pdf 7 11/19/2009 9:51:54 AM

8
DISPERSION USING SPACE DISTRIBUTION UNITS
Figure 8-1: SDU field wiring
This optional fan unit can be mounted on a wall
directly above the HUMIDI-TECH cabinet (SDU-E).
OM-55-1
Air
intake
vents
Steam
outlet
OM-56-1
If necessary, the fan unit can be mounted on a wall,
allowing the HUMIDI-TECH to be remotely located.
SDU-E
Field wiring
terminals for fan
and airflow
proving switch
HUMIDI-TECH
Electrical panel
right side view
vmsbpnlasm-11-a-o&m
SDU-I:
Provides instant, internal absorption
The Space Distribution Unit Internal Absorption
(SDU-I) disperses humidity with no visible vapor trail
or wetness, making the HUMIDI-TECH®with an
SDU-I ideal for use in finished spaces. When room
RH is 40% or less, the SDU-I fan mixes room air
and steam to ensure complete absorption before
discharge as humidified air. The SDU-I is available
for models VM-2 through VM-10.
SDU-E:
For higher capacity units or remote mounting
The Space Distribution Unit External Absorption
(SDU-E) mounts either directly on top of
the HUMIDI-TECH cabinet or remotely within a
space, providing application flexibility. The SDU-E is
available for models VM-4 through VM-34.
Mounting the SDU
The SDU may be mounted on a wall above the
HUMIDI-TECH cabinet or mounted on a wall remote
from the HUMIDI-TECH. Use the mounting template
on the box for correct placement. Two coach screws
are provided with each fan unit. (See Page 5 for
mounting instructions.)
VM99-C-0400-M-0801.pdf 8 11/19/2009 9:51:54 AM

9
DISPERSION USING SPACE DISTRIBUTION UNITS
Figure 9-1: SDU-E mechanical detail
57 mm
Front view
Side view
OM-2016
Steam inlet
472 mm
614 mm
Air inlet
Humidified air outlet
276 mm
OM-54-1
57 mm
Steam inlet
614 mm
Steam
outlet
472 mm
276 mm
Front view Side view
Field wiring is required to connect the SDU fan and
airflow proving switch terminals to the respective
HUMIDI-TECH®electrical panel terminals. Refer to
the external connections diagram in the package
shipped with your unit.
If the SDU-E or SDU-I is immediately above the
HUMIDI-TECH, disconnect both hose clamps on the
steam hose, grip the hose and rotate it to break it
loose from the tubing, and then slide the hose up
onto the SDU steam tube until sufficient clearance is
provided to move the tank.
Figure 9-2: SDU-I mechanical detail
Note: Maximum ambient RH must not exceed 40%
for the SDU-I to operate properly.
HUMIDI-TECH is a class-one-rated assembly with
the SDU. It has been tested and is in compliance
with the requirements to be mounted in areas
accessible to the general public.
VM99-C-0400-M-0801.pdf 9 11/19/2009 9:51:54 AM

10
SPACE DISTRIBUTION UNIT, EXTERNAL ABSORPTION (SDU-E)
Rise, throw and spread (SDU-E)
As steam is discharged from the humidifier, it
quickly cools and turns to a visible fog that is lighter
than air. As this fog is carried away from the
humidifier by the airstream, it tends to rise toward
the ceiling. If this fog contacts solid surfaces
(columns, beams, ceiling, pipes, etc.) before it
disappears, it could collect and drip as water. The
greater the space relative humidity, the more the
fog will rise, throw and spread before disappearing.
The distances the fog travels before it disappears
are given in Table 10-1.
Table 10-1: SDU-E Visible vapor travel
Table 10-1 notes:
Table 10-1 states the vertical (rise), horizontal
(throw) and width (spread) dimensions that can be
expected with the HUMIDI-TECH with SDU-E.
Surfaces cooler than ambient temperature, or
objects directly in the path of visible vapor dis-
charge, may cause condensation and dripping.
Rise: Maximum height visible vapor rises above the
steam outlet grill of the SDU-E.
Throw: Maximum horizontal distance visible vapor
travels from the steam outlet of the SDU-E.
Spread: Maximum width visible vapor spreads out
from the steam outlet of the SDU-E.
Model
40% RH@ 21°C 50% RH@ 21°C 60% RH@ 21°C
Rise
(m)
Throw
(m)
Spread
(m)
Rise
(m)
Throw
(m)
Spread
(m)
Rise
(m)
Throw
(m)
Spread
(m)
VM-4 0.30 1.5 0.30 0.50 2.0 0.50 .80 2.3 0.80
VM-6 0.30 1.5 0.30 0.50 2.0 0.50 .80 2.3 0.80
VM-8 0.30 1.7 0.30 0.50 2.0 0.50 .80 2.3 0.80
VM-10 0.50 1.8 0.50 0.60 2.1 0.60 1.0 2.5 1.0
VM-12 0.50 1.8 0.50 0.60 2.1 0.60 1.0 2.5 1.0
VM-16 0.60 2.1 0.60 0.60 2.1 0.60 1.0 2.7 1.0
VM-21 0.60 2.3 0.60 0.60 3.0 0.60 1.0 3.7 1.0
VM-25 0.60 2.5 0.60 0.80 3.2 0.80 1.1 3.8 1.1
VM-30 0.60 2.5 0.60 0.80 3.2 0.80 1.1 3.8 1.1
VM-34 0.60 2.5 0.60 0.80 3.2 0.80 1.1 3.8 1.1
Table 10-1 lists the recommended minimum vertical
(rise), horizontal (throw) and width (spread) clear-
ances for SDU-E area-type humidifiers at 40%, 50%
and 60% RH in the space.
The SDU-E contains a 926 cmh blower
(m3/h) and an airflow proving switch field wired to the
HUMIDI-TECH humidifier electrical panel. A wiring
diagram of the SDU-E is included with the unit.
On a call for humidity, the humidifier will begin
producing steam and the start relay will energize the
SDU blower. Time-delay is controlled by the
VAPOR-LOGIC®
3microprocessor.
VM99-C-0400-M-0801.pdf 10 11/19/2009 9:51:54 AM