Hoval’s Royalist range of hot water
boilers is available in standard BS
EN14394 versions (13 models up to
10 bar and 10MW) and the Royalist-
H BS EN12953 high temperature
model (13 models up to 27 bar and
12MW). Net efficiencies are up to
92% with highly efficient thermal
insulation to reduce standing losses
to, typically, just 0.3%.

The Royalist is a conventional
three-pass wet back, steel shell boiler
which, due to its generous boiler
water content, requires no minimum
water flow rate. It is suitable for
firing with a range of matched
burners, for use with gas (including
bio-gas), oil (including bio-diesel) or
dual fuel. Condensing versions are
also available, using the Hoval
Thermocondensor or bespoke
economisers.