Engineered Humidification Systems
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Drain Tempering Reservoir
Installation, Operation, & Maintenance
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Installation, Operation, & Maintenance Manual
TABLE OF CONTENTS
Warranty ...............................................................................................................................................3
Introduction ........................................................................................................................................... 4
Operational Characteristics ..................................................................................................................4
Operating Sequence ............................................................................................................................. 4
Installation Instructions .........................................................................................................................4
Adjusting the Temperature Actuated Valve ........................................................................................... 5
Replacement Parts ...............................................................................................................................5
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Drain Tempering Reservoir
Installation, Operation, & Maintenance Manual
I. WARRANTY
Limited 2-Year Warranty
Seller warrants the equipment of its manufacturing to be free
from defects in workmanship and material for a period of 24
months after shipment or 24 months after initial commissioning,
whichever occurs rst. This warranty is limited, however, to the
repair or replacement of defective equipment, which is returned,
freight prepaid, to Seller’s factory.
This limited warranty does not apply to any part or component
that is damaged in transit or when handling, has been subject
to misuse, negligence or accident, has not been installed, operated or serviced according to Seller’s instructions, or has been
operated beyond the factory-rated capacity or has been altered
in any way.
Seller’s liability is limited to replacement of defective parts or
components and does not include any cost of labor (including,
but not limited to, labor required to remove and/or reinstall any
defective part) other than Trion/Herrmidier factory labor.
Each of the Herrtronic series of steam generating humidiers
contains a plastic steam generating cylinder that is to be considered a routinely disposable part to be changed at regular maintenance intervals at the user’s expense. This steam generating
cylinder is not covered by this Warranty. If, after the rst installation of your Herrtronic humidier, you feel the steam generat-
ing cylinder is not operating normally, you should contact your
Herrmidier Representative with an explanation of the problem.
However, in the continuing operation of this humidier, replace-
ments of this part are your responsibility as part of routine maintenance.
Trion/Herrmidier shall not be responsible for loss of use of
any product, loss of time, inconvenience, or damage to other
equipment, or any other indirect or consequential damage with
respect to property whether as a result of breach of warranty,
neglect, or otherwise.
THE WARRANTIES AND LIABILITIES SET FORTH ARE IN
LIEU OF ALL OTHER WARRANTIES AND LIABILITIES, EXPRESSED OR IMPLIED, IN LAW OR IN FACT, INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR PARTICULAR PURPOSE.
The foregoing shall constitute the total liability of seller in the
case of defective performance of all or any of the equipment or
services provided to Buyer. Buyer agrees to accept and hereby
accepts the foregoing as the sole and exclusive remedy for any
breach or alleged breach of warranty by Seller.
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Installation, Operation, & Maintenance Manual
II. INTRODUCTION
Herrmidier’s Drain Tempering Reservoir mixes cool supply
water with hot discharge water from steam humidiers to
ensure drain water temperatures are below the limits that
may be set for municipal sewer systems and by local/state
plumbing codes. Herrmidier’s Drain Tempering Reservoir
may be used if municipalities prohibit draining water hotter
than 140 °F (60 °C) into their sewer systems. PVC drain pipes
are susceptible to damage from excessively hot drain water.
The Drain Tempering Reservoir may replace or supplement
the drain tempering feature available on Herrtronic steam
humidiers. When used with the Herrmersion RE, the Drain
Tempering Reservoir can successfully temper hot discharge
water from the skimming port. The integral mounting bracket
simplies installation.
III. OPERATIONAL CHARACTERISTICS:
Hot drain water being discharged from a humidier enters
the Drain Tempering Reservoir through the top threaded
connection. The vacuum breaker prevents backow into
potable water systems. Cold supply water enters through
the temperature-actuated valve and mixes with the hot drain
water. The sensing bulb, located inside the reservoir, ensures
that water leaving the Drain Tempering Reservoir is 140 °F
(60 °C) or less before entering the buildings drain system.
water leaving the reservoir is less than the temperature that
the valve is adjusted to. Most municipalities set this limit at
140 degrees Fahrenheit.
Tempered water exits the reservoir through the side outlet
which is connected to the drain piping. The horizontal
orientation allows for the drain piping to be pitched.
V. INSTALLATION INSTRUCTIONS:
IV. OPERATIONAL SEQUENCE:
HOT WATER
INLET
VACUUM
ACTUATED
COLD WATER
INLET
CAPILLARY
TUBE
VALV E
BREAKERTEMPERATURE
TEMPERED WATER
OUTLET
Hot water discharged from a humidier enters the drain
tempering reservoir through the piping connected to the
threaded connection on the top. The vacuum breaker
prevents backow.
Cold water enters the reservoir through the temperature
actuated valve. The valve sensor is located in the bottom of
the reservoir near the discharge port. This ensures that the
1. Mount the Drain Tempering Reservoir to the wall or a
bracket using the integral mounting holes.
2. Verify that the maximum ow rate of hot water into the
Drain Tempering Reservoir will not exceed 6 gallons per
minute.
3. There are three piping connections that need to be made
to the Drain Tempering Reservoir:
• Cold Water Supply
• Hot Water Inlet
• Tempered Water Drain Outlet
4. Position the Drain Tempering Reservoir to allow the
most direct path of piping. This will allow a minimal use
of pipe ttings.
5. Install unions as close to the Drain Tempering Reservoir
as is practical. This will allow service personnel to easily
remove the unit for maintenance and cleaning.
6. Cold Water Supply:
• The cold water supply connection is 3/8” female
pipe thread.
• Connect a 3/8” water line directly into the valve from
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Drain Tempering Reservoir
Installation, Operation, & Maintenance Manual
the main water supply.
• Ensure that adequate pressure (25 psi minimum)
will be supplied to the Drain Tempering Reservoir.
Do not use water lines that are dedicated to other
appliances.
• Do not branch off of the water supply line that feeds
the humidier.
• Install a cold water shut off valve before the service
union in the supply line.
7. Hot Water Inlet Connection:
• The hot water inlet connection is 1” male pipe thread.
• Run a 1” pipe as directly as possible to the reservoir
hot water inlet. If the piping is coming from a
horizontal run, ensure that adequate pitch to the
Drain Tempering Reservoir is at least 1% (1/8” per
foot).
8. Tempered Water Drain Outlet:
• The tempered water drain outlet is 2” male pipe
thread.
• Run a 2” pipe as directly as possible from the Drain
Tempering Reservoir to the drain. Ensure that
adequate pitch to the drain is at least 1% (1/8” per
foot).
• Make sure to leave a 1” air gap between the drain
piping and the drain.
• Once installed, simply open the cold water shut
off valve. The Drain Tempering Reservoir will
temper the drain water whenever hot water from
the humidier enters the reservoir. No electrical
connections are necessary.
.VII. REPLACEMENT PARTS:
5
6
4
2
1
3
.
Item Description Part Number
1 Drain Tempering Tank Welded Ass’y 266514-001
2 Vacuum Relief Valve 166524-001
3 Pipe Elbow, Brass (1/4”) 266207-001
4 Nipple, Schedule 40, 1/4” MPT AH-166-4
5 Reducing Bushing, 1/4” To 3/8” 143903-004
6 Temperature Actuated Mounting
Valve
266534-001
VI. ADJUSTING THE TEMPERATURE ACTUATED VALVE:
Using a thermometer to measure the tempered water
discharging from the unit, turn the adjusting screw to raise
or lower the temperature. Raising the valve opening point
will increase the tempered water temperature. Lowering
the valve opening point will decrease the tempered water
temperature. To raise the valve opening point on directacting valves, turn the adjusting screw counterclockwise. To
lower the valve opening point, turn the range adjusting screw
clockwise..
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Engineered Humidification Systems
Herrmidifier
®
101 McNeill Rd. | Sanford, NC 27330
P: 800.884.0002 | F: 800.458.2379 | www.herrmidifier-hvac.com | cs@herrmidifier-hvac.com
Form No. OM-DTR 0612 ©Herrmidier 2012. All Rights Reserved.
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