Table of Contents
Advertisement
HEAT PUMP AND TANK ASSEMBLY
AUXILIARY WATER HEATER
It may be necessary to install an auxiliary water heater under the following
conditions:
•
If the ambient temperature is likely to drop below 0
when heating may be required.
•
As back up redundancy if more than 50% of compressors are in fault
•
To ensure sufficient hot water is available for higher than expected peak
conditions.
•
If higher temperature water is required for certain applications, eg
commercial laundry or kitchen.
The configuration of the auxiliary water heating plant can vary depending on the
requirements of the individual installation.
Low Ambient Temperature Heating Only - Where the auxiliary water heater is
required to be activated if the heat pump cannot operate due to low ambient
conditions, the heat pump can activate the auxiliary heater or pump. There are
many configurations depending on system design. Refer to Application Guide for
details on the auxiliary boost function designed for this system.
In Line Boosting Only - Where the auxiliary water heater is required to ensure
sufficient hot water is available for periods after the main peak or to boost the
temperature of the water produced by the heat pump for other purposes (eg high
temperature for kitchen and laundry use), an auxiliary water heater must be
installed in series with the storage tanks. ie, the hot water outlet from the storage
tanks must feed into the inlet of the auxiliary water heater(s).
Note: Where RT/RW storage tanks are used, boosting in the top portion of the
storage tank is equivalent to boosting in series.
Where multiple auxiliary water heaters are required to be manifolded together,
these must be manifolded using the Equa-Flow
manifold in-series with the storage tanks. Refer to page 48.
This arrangement can also be adapted to include recirculation heat loss make
up and / or low ambient temperature activation heating. Refer to Application
Guide for options.
®
manifold system and the
46
o
C during periods
Advertisement
Table of Contents
