Supplied By www.heating spares.co Tel. 0161 620 6677
3. Boiler Assembly
3.1. General Rule
A
PROTHERM KLO
boiler can be put into operation only by an authorised installer. A network of the manufacturer's
contractual service centres provides installation, maintenance and repairs.
3.2. Connection to Gas Supply
PROTHERM KLO – ZP
types are designed for natural gas, with 1.8 kPa (18 mbar) pressure in the distribution network; the
calorific value of natural gas is about 9 to 10 kWh/m
3
. The user's gas piping and gas meter must be sufficient for all gas
appliances used on the premises. The pipe branch supplying the boiler must have the diameter corresponding to the boiler size,
but a diameter one degree higher is recommended.
PROTHERM KLO – P
types are designed for LPG; the calorific value of natural gas is about 12.8 to 13 kWh/kg. Operation
using cylinders would be problematic, due to both sufficient volume and handling of the cylinders; hence a prerequisite for the
operation is an installation of an LPG tank near the heated premises and filling of the tank by an organisation authorised for such
activities.
Sufficient supply of LPG from the tank (and other gas appliances, if any) is part of the design and supply of the tank. For LPG
boilers, a pressure-control valve must provide the pressure of exactly 3.0 kPa (30 mbar).
3.3. Combustion Air Supply
Stationary cast-iron
PROTHERM KLO
boilers take combustion air from the space – the air in the room must not contain dust or
aggressive or flammable substances (vapours of glue, paint thinner, etc.) There must be the possibility of direct ventilation of the
space, at a minimum volume of 0.8 m
3
per each kW of the boiler's power output. If direct ventilation is impossible, the required
volume is 2 m
3
per each kW of power output. Direct ventilation is by ventilation openings to the outside air, or to neighbouring
rooms that can be ventilated to the outside. Insufficient space is solved by ventilation openings of sufficient size.
Gas appliances with flue gas removal to chimneys must not be in rooms in which negative air pressure is created by ventilation
fans.
3.4. Flue Gas Removal
The boiler's flue gases are led to a chimney with continuous draft, at least 2 Pa. Connection to the chimney is by a flue-gas duct,
whose diameter corresponds to the outlet on the boiler (depending on the boiler size). The duct is not included in the delivery.
No elements reducing the draft (such as various exchangers for using the residual heat) are allowed to be inserted in the
flue-gas duct.
Installation of both the boiler and the flue-gas duct must comply with applicable standards. The standards' requirements prevent
appearance of adversary effects, such as excessive cooling of the flue gases, penetration of chimney wall by humidity, and
variability of chimney draft, which would affect the boiler operation in an undesirable manner.
An extension,
PROTHERM PT 20 (30, 40, 50) POLO – TURBO,
can be used for forced removal of flue gases from
PROTHERM 20, 30, 40, 50 KLO boilers. This makes it possible for the boilers (with the exception of the
PROTHERM 60 KLO
type) to be used on premises where a chimney cannot be used. The extension is directly connected to the boiler's flue-gas outlet.
The extension fully replaces a chimney, for maximum length of the flue-gas duct up to 10 equivalent metres (1 equivalent metre:
1 m of straight duct or one 90° elbow).
Only authorised organisations may install the extension on a boiler and start its operation. Safety regulations and precautions must
be adhered to when servicing the extension connected to the electric grid, even if switched off!
3.5. Requirements for Heating Water Quality
PROTHERM KLO
boilers are designed for water pressure up to 400 kPa (4 bar).
Water for filling and replenishment must be clear, colourless, without suspended solids, oil or chemically non-aggressive
substances; the water mustn't be acidic (its pH must be above 7) and the carbonate hardness must be as low as possible.
Sodium phosphate or chelating agent may be added to the water for filling.
7