Riello Array AR 2000 User Manual

31
COMMISSIONING
4.16.3 Ducted Combustion Air
For ducted combustion air installations, the air ductwork must be
attached directly to the air inlet connection on the sheet metal
enclosure.
In a ducted combustion air application, the combustion air ducting
pressure losses must be taken into account when calculating the
total maximum allowable venting length.
For additional details, see “Appendix I - Venting Size Data”.
5 COMMISSIONING
5.1 Introduction
Before starting the boiler, the user must be correctly instructed by
the installer, on how to operate the heater, in particular:
− Make sure that the user understands that combustion air
and ventilation openings must not be restricted, closed, or
modied in any way.
− Make sure that the user is informed of all the special
measures to be taken for combustion air inlet and
discharging ue gases, and that these must not be
modied in any way.
− Make sure that the user keeps this manual and all other
documentation included with the boiler.
− Make sure that the user understands never to tamper with
gas control settings and the risk of re, explosion, or CO
poisoning should an unauthorized individual do so.
− Make sure that the user knows how to adjust temperatures
and controls.
9
WARNING: Do not attempt to dry re the unit. Starting the unit
without a full water level can seriously damage the unit and
may result in injury to personnel or property damage. This
situation will void any warranty.
9
CAUTION: All of the installation procedures in “Installation”
starting on page 15 must be completed before attempting to
start the unit.
5.2 Filling the Condensate System
The condensate system must be lled with water according to the
Section 4.11.
9
WARNING: At the Start-up and after prolonged shutdown of
the boiler, the condensate traps and the syphon must be lled
with water prior to restarting it, otherwise combustion gases
will enter the room with a risk of an excessive level of carbon
monoxide.
5.3 Filling the Boiler Heating System
To ll the heating system, proceed as follows:
− Open any automatic air vents in the heating system.
− Open the ll valve and proceed to ll the heating system
and boiler until the pressure gauge (shown on Fig. 55),
reads the pressure for which the heating system is sized.
The heating system water pressure must be higher than 7.5
PSI.
− Check for any water leaking from the ttings. If there is, the
leaks must be repaired.
− Check the pressure gauge during the purging process. If the
pressure has dropped, re-open the ll valve to bring the
pressure back to the desired value.
5.4 Warnings Concerning the Gas Supply
When starting up the unit for the rst time the following must be
checked:
− That the unit is supplied with the type of fuel that it is
congured to use.
− That the gas supply system is provided with all the safety
devices and controls required under current national and
local codes.
− That the vent and combustion air terminals are properly
connected and free from any blockages.
− That the condensate drain tube is properly connected.
5.4.1 Conrming the Unit’s Gas Type
The type of gas and supply pressure for which the unit is congured
is listed on the rating label. The Array Series boilers can operate
using one of the following two gases:
NATURAL GAS
− Maximum supply pressure = 13.5” w.c. (33.6 mbar).
− Minimum supply pressure = 4” w.c. (10 mbar).
PROPANE (LP) GAS
− Maximum supply pressure = 13.5” w.c. (33.6 mbar).
− Minimum supply pressure = 8” w.c. (19.9 mbar).
5.4.2 Gas Type Conversion
If the gas available at the installation site is not the type the
boiler is congured to use, the boiler must be converted. Special
conversion kits are available for this purpose. The gas conversion
procedure may be found in Section “4.12.4 Gas Type Conversion”
page 22. Conversion must be carried out by a qualied technician.
5.5 Boiler Startup Procedure
To start the boiler, do the following:
− Open the manual gas shut off valve (Fig. 2).
− Turn ON the main power switch (Fig. 23).
− Push all Module power switches to ON (Fig. 20).
− To help remove the air from the hydraulic circuit, the De-
airing function can be started for each module. When
activated, the “De-Air” sequence starts at every power ON
and consists of a controlled cycling of the pumps OFF and
ON that takes 14 minutes, during which no demand will
be served. If the water pressure is too low and the water
pressure switch is in error, the sequence will be suspended
until the pressure switch is ON again. This function can be
started through the Service display, switching the parameter
(139) Dair_active from No to Yes on each Dependent.
− Check/Modify the parameter (*) Number of Units. It must
match the number of modules of the boiler (2 for AR 1000, 3 for
AR 1500 and 4 for AR 2000). By default the number of expected
modules is 8. Follow the path below on the Service display:
Menu->Settings->Boiler Settings->Module Cascade
Settings->(*) Number of Units
− The Touchscreen Control Panel will switch on. The Splash/
Stand-by screen consists of the R logo:

Riello Array AR 2000 Specifications

General

Brand	Riello
Model	Array AR 2000
Category	Boiler
Language	English