Herrmidifier Drain Tempering Reservoir - Manual (Page 4)

Drain Tempering Reservoir
I n s t a l l a t i o n , O p e r a t i o n , & M a i n t e n a n c e M a n u a l
4 www.herrmidifier-hvac.com
II. INTRODUCTION
Herrmidifier’s Drain Tempering Reservoir mixes cool supply
water with hot discharge water from steam humidifiers to
ensure drain water temperatures are below the limits that
may be set for municipal sewer systems and by local/state
plumbing codes. Herrmidifier’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
humidifiers. When used with the Herrmersion RE, the Drain
Tempering Reservoir can successfully temper hot discharge
water from the skimming port. The integral mounting bracket
simplifies installation.
III. OPERATIONAL CHARACTERISTICS:
Hot drain water being discharged from a humidifier enters
the Drain Tempering Reservoir through the top threaded
connection. The vacuum breaker prevents backflow 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.
IV. OPERATIONAL SEQUENCE:
VACUUM
BREAKER TEMPERATURE
ACTUATED
VALVE
CAPILLARY
TUBE
HOT WATER
INLET
COLD WATER
INLET
TEMPERED WATER
OUTLET
Hot water discharged from a humidifier enters the drain
tempering reservoir through the piping connected to the
threaded connection on the top. The vacuum breaker
prevents backflow.
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
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:
1. Mount the Drain Tempering Reservoir to the wall or a
bracket using the integral mounting holes.
2. Verify that the maximum flow 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 fittings.
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