DriSteem XTR General instructions

XTR
Electrode Steam Humidifier
Installation, Operation,
and Maintenance Manual
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ATTENTION INSTALLER
Read this manual before installing
humidifier.
Leave manual with product owner.
DRI-STEEM technical support
800-328-4447
WARNING!
is product must be installed by qualied HVAC and electrical
contractors and in compliance with local, state, and federal codes.
Improper installation may cause property damage, severe personal
injury, or death as a result of electric shock, burns, and/or re.
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Installation
Specifications...........................................2
Dimensions............................................2
Choosing a location .....................................3
Mounting the humidifier.................................4
Supply water and drain piping ............................6
Fieldwiring............................................8
Humidistat placement ..................................10
Wiringdiagrams.......................................11
Dispersion............................................13
Generalinstructions................................13
Selectingthedispersionassemblylocation.............13
Interconnecting piping requirements..................14
Dripteeinstallation ................................16
Dispersiontube....................................17
XTRsteamblower..................................18
Operation
Principleofoperation ..................................24
End-of-seasondrain....................................25
Extendedshutdown....................................25
Safetyfunctions........................................25
Humidifier start-up ....................................26
Systemmessages.......................................27
Maintenance
Maintenanceprocedures................................28
Troubleshooting.......................................31
Replacement parts .....................................35
Two-year limited warranty .......................Backcover
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Table 2-1:
XTR humidifier specifications
Voltage kW
Maximum
steam capacity
Current draw
(amps)
Shipping
weight
Maximum
operating
weight
lbs/hr kg/h Amps lbs kg lbs kg
120V 1.38 4.0 1.8 11.5 13.1 5.9 17.1 7.8
208V 2.39 7.1 3.2 11.5 13.1 5.9 17.1 7.8
240V 2.76 8.1 3.6 11.5 13.1 5.9 17.1 7.8
Figure 2-1:
XTR humidifier dimensions
OM-7495
Front view
Top view
Bottom view
C
A
B
D
G
Table 2-2:
XTR humidifier dimensions
Dimension
XTR humidifier
inches mm
A 9.00 229
B 19.25 489
C 1.625 41
D 3.13 80
E 7.13 181
F 3.13 80
G 3.38 86
H 7.13 181
I 1.38 35
J 2.38 60
K 0.88 22
L 2.25 57
M 2.63 67
N 6.43 163 F
G
E
H
Dispersion outlet
Electrical knockouts
Water fill line connection
Drain
J
K
LM
N
I
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Choosing a location for the humidifier
When selecting a location for the humidifier, consider the following:
t Proximity to duct
Install the humidifier near the air duct system where the
dispersion assembly will be located. The maximum recommended
length for vapor hose connecting a single humidifier to a
dispersion assembly is 10' (3 m). The maximum recommended
developed length for tubing or pipe connecting a single
humidifier to a dispersion assembly is 20' (6 m). See the
dispersion section of this manual for more information about
installing dispersion assemblies.
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The recommended installation location for the dispersion
assembly is at an elevation higher than the humidifier. However,
if the dispersion assembly must be installed at an elevation
lower than the humidifier, install a drip tee and drain as shown
in Figure 16-1. Before installing a dispersion assembly or
interconnecting piping, review all pitch requirements in the
dispersion section of this manual.
t 3FDPNNFOEFENJOJNVNDMFBSBODFT (see Figure 3-1)
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Electrical power supply connections are made at the bottom
right panel corner of the electrical enclosure. The system wiring
is inside the cover of the control cabinet. See the field wiring
instructions.
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Water supply piping connections are made on the bottom right
side of the unit. Drain piping connections are made at the bottom
center of unit. See the field piping illustration and instructions.
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Do not install the humidifier on an exterior wall unless that wall
is properly insulated.
Choosing a location for the dispersion assembly and control
devices
See the dispersion section of this manual for recommended
installation locations for the dispersion assembly. See Page 10 for
recommended installation locations for humidistats.
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Important:
Install humidifier only in locations that meet
the following temperature and relative
humidity (RH) requirements:
Maximum ambient temperature:
104 °F (40 °C)
Minimum ambient temperature:
41 °F (5 °C)
Maximum ambient humidity:
80% RH (non-condensing)
Note:
To open the humidifier access door, rotate
the screw counter-clockwise ¼ turn. The
door pivots toward the front of the unit
from the bottom of the door. To close the
access door, position screw slot so that it
is horizontal and then push the door shut.
Make sure sides of door go outside the
enclosure.
Figure 3-1:
Recommended minimum clearances
OM-7497
Top: 16"
(400 mm)
Floor: 16"
(400 mm)
Between units: 4"
(100 mm)
Side: 4" (100 mm)
Front: 36"
(914 mm)
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Figure 4-1:
Mounting hole locations
Table 4-1:
Mounting dimensions
Dimension
XTR humidifier
inches mm
A 4.63 117.5
B 3.63 92.1
C 0.75 19.0
D 2.25 57.2
E 12.25 311.2
F 2.75 69.9
OM-7496
A
BC
D
E
F
Prepare humidifier for mounting
Unpack unit from shipping carton and open steam cylinder door.
Disconnect electrode and high water sensor connectors from steam
cylinder. Remove steam cylinder from drain valve body.
Mount humidifier
Mount the humidifier so that it is plumb. See Figure 6-1 for an
installation overview.
When mounting on a wood stud wall, locate studs and attach two
spanner boards. Locate one 3" (76 mm) on center from the top of
the cabinet for the mounting screws and the other board located
3.5" (89 mm) on center from the bottom of the cabinet. Mark hole
locations per Table 4-1 and predrill 1/8" (3 mm) diameter pilot
holes. Secure cabinet to spanner board with screws provided.
WARNING!
Mount humidifier per the instructions in this
manual and to a structurally stable surface.
Improper mounting of humidifier can cause
the humidifier to fall off the wall resulting in
severe personal injury or death.
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When mounting on a metal stud wall, locate the studs and drill a
¼" (6 mm) hole through the studs and wall. Mount spanner boards
with ¼" (6 mm) bolts through the wall, studs, and a backing plate
on the backside of the wall and secure with a nut and washer.
For hollow block or poured concrete wall mounting, mark
mounting holes per Table 4-1. Drill pilot holes sized for the proper
concrete anchors. Secure cabinet in place using four screws.
For finished space mounting with blower, locate stud for mounting
XTR unit to wall. Use of anchors is acceptable for mounting blower
in finished spaces. Always take care to avoid excess stress on the
blower and humidifier when performing maintenance.
Insert steam cylinder
1. Slide steam cylinder (with warning label facing toward operator)
into drain valve body.
2. Connect electrode and high water sensor connectors to steam
cylinder (refer to unit wiring diagram located inside of unit).
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WARNING!
Drain piping surface may be hot. Touching
or contact with hot pipe can cause severe
personal injury.
Figure 6-1:
Field piping overview for XTR humidifier
Steam vapor hose; may also use tubing or
pipe. See Table 15-1 for maximum piping
lengths. Tubing or pipe must be grounded.
Fill valve (with screen)
3/8" (DN10) O.D. copper; compression fitting on valve
Shock arrester
recommended
to reduce
water hammer,
by installer
Install
plumb
¾" (DN20) metallic drain
piping. If piping run is over
10' (3 m) increase pipe to
1¼" (DN32).
1" (25 mm) air
gap required
Spill funnel. Plumb to floor drain
Refer to governing codes for drain pipe size
and maximum discharge water temperature.
Offset humidifier from spill funnel to prevent
flash steam from rising into the humidifier.
Supply valve, by installer
Hose and clamps
Inlet strainer, by installer
Pitch 1/8”/ft (1%)
towards drain
OM-7498
Continuous copper
water supply line;
water pressure must
be between 25 psi
and 80 psi (175 kPa
and 550 kPa)
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Supply water quality
XTR humidifiers use normal tap water to generate humidification
steam. Water conductivity must be within the range of 125 to 1250
μS/cm (which, in many cases, is roughly equivalent to 3.4 to 36.3
grains/gallon). Do not use softened or demineralized water. Do not
use heated supply water because unheated supply water is required
for drain water tempering.
Supply water piping
Use only copper for supply water piping—do not use rubber or
plastic. A strainer is recommended to be installed in the supply
piping before the fill valve. The fill valve connection size is a 3/8"
(DN10) compression fitting. In cases where water hammer may be a
possibility, consider installing a shock arrestor. Water pressure must
be between 25 psi and 80 psi (175 kPa and 550 kPa).
Humidifier drain piping
Drain piping must be code-approved copper or steel rated for 212 °F
(100 °C) minimum. The final connection size is ¾" (DN20) copper
for the steam cylinder drain. Do not reduce this connection size.
See Figure 6-1 for typical installation dimensions and requirements.
If drainage by gravity is not possible, use a reservoir pump rated for
212 °F (100 °C) water.
A 10" (254 mm) piece of hose is provided to function as the flexible
connection from the drain cup to the field installed drain plumbing.
A D29 hose clamp is provided to secure the drain hose to the drain
cup.
If the equivalent length of pipe from the humidifier drain to the
plumbing system drain is more than 10' (3 m), increase the pipe size
to 1¼" (DN32).
Important: Thoroughly flush the
supply water piping to remove pipe residue
and stagnant water before connecting
piping to the humidifier. Pipe residue and
stagnant water in the water supply piping
can cause the humidifier to not reach
required steam capacity.
Figure 7-1:
Drain piping detail
OM-7499
Note:
* A D29 bolt hose clamp and black rubber hose
ship with each humidifier. These parts can also be
ordered from DRI-STEEM. See the replacement parts
section of this manual for part numbers.
Hose clamp
(field supplied)
D29 bolt hose clamp
Black rubber hose
¾" (DN20) copper Open drain
1"
(25 mm)
air gap
Drain cup
Pitch 1/8”/ft (1%)
towards drain
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Humidifier field wiring
All wiring must be in accordance with all governing codes and
with the unit wiring diagram. The unit wiring diagram is inside the
cabinet door. Power supply wiring must be rated for 105 °C.
When selecting a location for installing the humidifier, avoid
areas close to sources of electromagnetic emissions such as power
distribution transformers.
Do not loop power wiring.
Do not use aluminum wire.
Field wiring connections and requirements
Knockouts are provided on the bottom of the cabinet. Control
wiring knockouts are toward the bottom front; power wiring
knockouts are on the bottom rear.
CAUTION! Adding alternate conduit connections is not
recommended; however, if making holes and knockouts in the
humidifier cabinet, protect all internal components from debris
and vacuum out cabinet when finished. Failure to comply with this
caution can damage sensitive electronic components and void the
DRI-STEEM warranty.
Control component placement
Follow the guidelines on Page 10 for placing humidistats and
airflow proving switches.
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Notes:
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in dedicated or separate earthed metal conduit,
cable trays, or trunking.
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control circuit wiring when routing electrical
wiring inside the humidifier cabinet.
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carrying commons. Never use a safety ground as a
conductor or neutral to return circuit current.
OM-7500
Fused
disconnect
Power
supply
Figure 8-1:
Field wiring requirements
WARNING!
Only qualified electrical personnel should
perform field wiring installation procedures.
Improper wiring or contact with energized
circuits can cause property damage, severe
personal injury, or death as a result of
electric shock and/or fire.
Humidifier
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