THERMAFLOW LTD | THERMAFLOW® ELECTRIC COMBINATION BOILER |
Tel: 0870 850 5207
4
The 12 KW boilers must be installed in premises having a system impedance of not more than
0.1939 + J 0.1939
Ω
0.1 Instructions
General
A pressure reducing valve must be fitted to the cold water inlet if the incoming water pressure exceeds
300 KPA (3.0 Bar).
The primary operating pressure initial charge is 150 KPA (1.5 bar) this will increase to around 200 KPA
(2.0Bar) when the system has reached maximum temperature and will depend on system volume.
The primary expansion vessel pre-charge pressure is 100 KPA (1.0 bar) and has volume of 50 litres.
The secondary expansion vessel pre-charge pressure is between 200-350 KPA (2-3.5 bar) and has a
volume of 0.5 litres.
The primary pressure relief valve is set to 300 KPA (3.0 Bar).
Thermaflow Model Number
TH9-210U MRK 2
TH9-210U MRK 2
TH9-250U MRK 2
TH9-250U MRK 2
TH9-330U MRK 2
TH9-330U MRK 2
Primary storage capacity
218 Litres
250 Litres
330 Litres
Weight when Empty
60KG 70KG 75KG
Weight when Full
278KG 320KG 405KG
WARNING: BEFORE OBTAINING ACCESS TO TERMINALS, ALL SUPPLY CIRCUITS MUST
BE DISCONNECTED.
The
TH9
has
3
and the
TH12
has
4
heating elements fitted. Size 16” in length and are manufactured
from Inc-alloy EN60335.2.73.
The rated power input of the
TH9
appliance is ~230- 240V, 50Hz, 8,250-9,000w
The rated power input of the
TH12
appliance is ~230-240V, 50Hz, 11,000-12,000w
The elements fitted to the Thermaflow should
NOT
be replaced with elements which are not
approved for the Thermaflow boiler
.
It is recommended that the Thermaflow has a safety and maintenance check on an annual basis.
A pressure reducing valve must be fitted to the cold water inlet of the appliance if the incoming
pressure exceeds 300kPA (3 Bar).
The position of the outlet from the discharge pipe shall be visible to the occupants and shall be
positioned away from any electrical devices.
The position of discharge pipes, (Tundish), drain valves and motorised valves etc, must be
positioned away from electrical components.
The water may drip from the discharge pipe of the pressure-relief device and must be left open to
the atmosphere.
The pressure relief device must be operated regularly to remove lime deposits and to verify that it
is not blocked.
