Installation guide

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Bosch - Everlast™COMBO Gas Hot Water System
Read this information in conjunction with Bosch Continuous Flow
Gas Heaters Installation & User Handbook, and pump manufacturers
operating instructions handbook.
The Bosch-Everlast™COMBO Commercial Gas Hot Water System
is a combined Gas Continuous Flow water heating system and
accumulator. The system has been manufactured to Australian
Standards AG 102 and AS 1056.
The system incorporates a full copper heat exchanger for maximum
life and a premium marine grade 316 stainless steel cylinder. The
system is covered by a 10 year warranty in domestic installations,
and 5 year warranty in commercial installations; as per the enclosed
warranty conditions.
The combination of the high efficiency and powerful Bosch
Continuous Flow hot water heaters with the durable, highly
insulated Everlast C2 Accumulator, yields a high delivery, very long
life hot water system.
The system can be sized to meet applications where far more
expensive options would be the only other design alternatives.
Features of your Bosch - Everlast™ COMBO Water Heating
System
• This system provides both flow and temperature buffering from a
250 or 315 litre Accumulator so that high peak hot water draw-offs
and high average peak flows do not result in flow or temperature
fluctuations. (Actual capacities of Accumulators exceed the rated
sizes by about 20 litres).
• Systems with an Accumulator deliver stability under peak
demand extremes without the need to over design a non
accumulator system.
• Multiple Bosch Continuous Flow units may be manifolded to the
Everlast Accumulator with
No need for Staging of the Cold Water
Supply Inflow, as the Total flow of the manifolded units has to be
circulated through the Accumulator to ensure best buffering and
recovery performance.
• The Accumulator design has exceptional thermal insulation to
meet Australian Standard AS 1056, and the gas units have no heat
loss when burners are off. As a result, this system is highly efficient
with almost no "standing or waste" heat losses and of course
absolute minimum heat wastage in storage to meet peak use.
• Modular design. The Everlast C2 Accumulator, the Bosch
Continuous Flow units and the Circulating Pump such as Davey
SB30-25 & Grundfos 32-80B; are ALL separate components and are
independently serviced for replacement or repair.
No unitary system
high replacement costs.
• 50 mm primary flow fittings oriented for commercial manifolding
with a minimum of coupling tees or size change socket fittings.
• Technical Support. Available from Everlast, to assist you in
design, component selection and specification. Bosch Continuous
Flow manufacturers technical service will provide system information
on units, performance and flueing options for internal units and hot
water accessories.
The Bosch-Everlast™COMBO Water Heating System uses Bosch
Continuous Flow water heaters typically from 132 – 200 MJ/hour.
Multiple Bosch units can be manifolded together with one Everlast C2
Accumulator. When a Single Bosch unit is required an Accumulator is
available with integrated mounting points and with the addition of the
Pipe cover, a space saving, secure and aesthetic package is
presented. As a design example :
A COMPLEX OF TWENTY-FIVE 3 BEDROOM APARTMENTS
INCLUDING ENSUITES IS FULLY SERVICED BY THREE 200
MJ/HR MODEL 25 E HEATERS & TWO 315 L C2
ACCUMULATORS.
" COMBO " Water Heating System
There are three main water "circuits" in the Bosch-Everlast COMBO
Water Heating System :
a) The "Mains Pressure" Circuit - causes water to flow from the
'mains supply' to the Accumulator cylinder and from the Accumulator
cylinder to the system outlets. Diagram 1 shows the "Mains Pressure"
circuit.