29
RTS HUMIDIFIER RX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Piping:
INSTALLATION
Drain water tempering
• Locate a union as close to the connection as possible (hard pipe remote)
• For hard pipe remote, run 1" (DN25) pipe as directly as possible from
the humidifier to the mechanical tempering device. If the piping to the
hot water inlet has a horizontal run, maintain a pitch to the device of
at least 1/8"/ft (1%). If extending the drain hose, only use hose rate to
250°F (121°C).
6. Tempered water (to drain) connection instructions:
• Tempered water outlet connection is 1.5” (DN38) pipe thread.
• Install a union as close to the device as possible.
• Run a 1.5” (DN38) pipe as directly as possible from the mechanical
tempering device to the drain. Maintain a pitch to drain of at least
1/8”/ft (1%).
• Make sure there is a 1” (25 mm) air gap between the drain piping and
the drain.
STEP-BY-STEP MAINTENANCE INSTRUCTIONS
1. Shut off cold water supply.
2. Disconnect service unions as necessary.
3. Remove the device from piping and take to a service sink. Add water
and, with pipe caps or hands covering the hot water inlet and tempered
water outlet, shake the device to dislodge mineral deposits. Dump mineral
deposits and rinse.
4. If severe mineral accumulation has occurred, remove the thermal sensor
from the chamber and gently clean the sensor with an abrasive pad. Do
not twist the capillary tube during removal or cleaning.
5. Reconnect service unions and open cold water supply valve to resume
operation, as necessary.
FIGURE 29-1: MECHANICAL TEMPERING DEVICE MOUNTED
UNDERNEATH HUMIDIFIER
OM-8117
Connects
to drain
Supply
water line
Cold water
connection
Supply water
Drain outlet
Mounts to underside of the
humidifier frame
OM-8119
Connects
to drain
Floor
mount
Connect to supply water
Supply water
Drain outlet
FIGURE 29-2: MECHANICAL TEMPERING DEVICE MOUNTED
ON THE SIDE OF THE HUMIDIFIER
