Partial Heat Recovery Piping - Trane RTXC-XE Series Installation, Operation And Maintenance Manual

Partial Heat Recovery Piping

RTXC-SVX003D-EN
Proper Water Treatment!
The use of untreated or improperly treated water could result in scaling, erosion, corrosion,
algae, or slime. It is recommended that the services of a qualified water treatment specialist
be engaged to determine what water treatment, if any, is required. Trane assumes no
responsibility for equipment failures which result from untreated or improperly treated water,
or saline or brackish water.
Equipment Damage!
Do not use untreated or improperly treated water in the heat recovery water loop as it could
damage to the unit. It will also cause inefficient operation and potential damage to the unit
such as reduced heat transfer between water and refrigerant, increased water pressure drop
and reduced water flow.
Water circulating inside the heat recovery heat exchanger should never be used for drinking
water, it must be used through an indirect loop to heat or preheat hot water.
Important: The installation must comply with the rules and legislation applicable at the jobsite
location regarding the use of drinkable water. The use of the water circulating in the
heat recovery exchanger as drinkable water is not recommended. An intermediate
heat exchanger should be used.
Figure 13. Typical Partial Heat Recovery Piping
For recommended partial heat recovery piping see
controller are field supplied and installed by user, including:
• Thermometers
• Water pressure gauges with shutoff valves
• Safety valve
• Hot water pump
• Drain valve (at lowest position)
•
Shutoff valves
• Vibration eliminators
• Balancing valve
•
Flow switch
• Air vents (to bleed air from system)
• Water strainer
• Insulation
The partial heat recovery water temperature should be controlled via field supplied and installed
external device such as a bypass valve or hot water pump, refer to
selection. In addition, a water tank and additional heater is suggested in the partial heat recovery
loop.
NOTICE
NOTICE
Figure 13, all the hot water related parts and
Table 5 for hot water pump
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