Varmax floor standing boilers are built around
an entirely stainless steel fully welded heat
exchanger. This gives exceptional tolerance to
a wide range of system water conditions for
corrosion resistance and a long life.
The range consists of 8 single boilers with
outputs from 120kW to 450kW, and 4 dual
models with combined outputs from 550kW
to 900kW. Varmax is ideally suited for split
temperature systems and projects such as
medium sized district heating schemes.
High water capacity of the heat exchanger
allows operation with wide differential
temperatures. This removes the need for a
dedicated primary circuit and enables system
pumps with lower energy use to be installed.
Designed for use in sealed hydraulic systems
only, all boiler models are pressure tested
to 6 bar and have twin return connections
for improving operating efficiency with split
temperature systems. Generous insulation
assures standby losses are kept to a
minimum.
Fully pre-mix burners with 5:1 turndown
far exceed ErP NOx criteria with emissions
across the range lower than 40mg/kWh. A
built in flue gas non-return valve simplifies
flue system design whilst providing effective
protection from re-circulation of flue gases
through non-firing boilers.
Featuring comprehensive controls, Varmax boilers are capable of managing heating
systems including a domestic hot water
cylinder and up to three independent heating
circuits operating at different temperatures
to one another. Featuring in built sequence
control functionality, multiple boilers can be
managed without the need for a dedicated
sequence control panel.
Where premises are equipped with Building
Management Systems, control of the boilers
can be set to receive enable and analog
signals dictating when boilers should operate
and the magnitude of power output they
should deliver.
- Improved efficiency on split temperature systems due to twin return connections
- Easier installation with no requirement for dedicated primary circuit
- Tolerant to a wide range of system water conditions with a corrosion resistant stainless steel heat exchanger
- Long life backed up by a 5-year heat exchanger warranty
- Well insulated for low standby losses
- Maximum BREEAM credits available with NOx emissions lower than 40mg/kWh
- Match heating system loads accurately with outputs up to 900kW and a 5:1 turndown ratio
- Simplified flue system design as the flue gas non-return valve is built in to provide effective protection from re-circulation of flue gases through non-firing boilers
- Advanced built in Siemens controls platform with sequence control for up to 16 boilers, multiple heating circuits and a hot water circuit using the master/slave principle
- Quick release access panels for ease of service and maintenance
