20
It is advisable to contact your local waterworks office (authority
responsible for waste water regulations) well before commencing
with the installation of the neutralizer kit in order to establish
details of local regulations that apply.
NOTICE
: to avoid a negative pressure onto the condensate check
valve, pipe ventilation must take place between the condensate
trap and the drainage system, in case of discharge into:
a public sewage system
a neutralizer kit
a condensate pump kit
7.5
General piping information
9
CAUTION:
Use two wrenches when tightening water piping
at the boiler, using one wrench to prevent the boiler return
line or supply line from turning. Failure to support the boiler
piping connections to prevent them from turning could
cause damage to boiler components.
NOTICE
: The Family PRO boiler control module uses temperature
sensors to provide both high limit protection and modulating
temperature control. The PCB also provides low water protection
using a water pressure sensor (minimum 6.5 psi (0.45 bar)). Some
codes/jurisdictions may require additional external controls for
high limit and/or low water cutoff protection.
7.5.1
Separate low water cutoff
A low water cutoff may be required by state local code or
some insurance companies. Check code requirements before
installation of the Family PRO boiler. If required:
− Use a low water cutoff designed for hydronic installations
− Follow low water cutoff manufacturer’s instructions
A hot water boiler installed above the radiation level or as
required by the Authority having jurisdiction, must be provided
with a low water cutoff device either as part of the boiler or at
the time of boiler installation.
Note: The electronic low water cutoff located internally in the
Family PRO 42 KIS-IS is below the lowest safe permissible water
level established by the boiler manufacturer.
7.5.2
B
ackflow
preventer (heating only model)
Use a backflow preventer specifically designed for hydronic
boiler installations. This valve should be installed on the
cold water fill supply line per local codes.
7.5.3
Fitting the heating circuit supply and
return pipes
NOTICE
: To protect the entire heating system
R
recommends
installing a Y-Strainer in the return circuit. When connecting the
boiler to an existing heating system this device must be installed.
− Install shut-off valves immediately before and after the
Y-Strainer to enable the Y-Strainer to be cleaned.
− Install a fill valve and drain valve in the heating system supply
pipe if required.
− Also plumb the pressure relief valve to the drain system.
NOTICE
: When using oxygen-permeable pipes, e. g. for floor
heating systems, you must separate the system using heat
exchangers.
− Thoroughly flush all pipes and radiators
− Refer to the installation wall template for the pipe connection
dimensions
− Connect the pipes so that they are free from strain.
7.5.4
Available Pump Head (ft. hd.)
Size the piping and components in the space heating system
using recognized design methods.
NOTICE
: The boiler, when used in connection with a refrigeration
system, must be installed so the chilled medium is piped in
parallel with the boiler and with appropriate valves to prevent
the chilled medium from entering the boiler.
NOTICE
: The boiler piping system of a hot water boiler connected
to heating coils, located in air handling units, where they may
be exposed to refrigerated air circulation must be equipped with
flow control valves or other automatic means to prevent gravity
circulation of the boiler water during the cooling cycle.
7.5.5
Waterside Flow (primary circuit)
The boiler is designed for closed loop, forced circulation hot
water heating systems only.
Family PRO is equipped with an internal pump.
PUMP DUTY
Residual head of circulator
The residual head for the heating system is represented
in the graph, according to the flow rate. The piping on
the heating system must be sized taking into account the
available residual head value.
Bear in mind that the boiler will operate correctly if there is
sufficient water circulation in the heat exchanger, as the boiler
is equipped with an automatic internal by-pass which is
designed to ensure water flow rate into the heat exchanger is
correct under any installation conditions.
9
CAUTION
: The Family PRO IS must not be operated as a potable
Hot Water Boiler. The Family PRO must not be operated in a
open system.
Flow rate [gpm]
Residual head [ft]
0
1
2
3
4
5
6
0
2
4
6
8
10
12
14
16
18
20
73 Watt
III
speed
II
speed
I
speed
An external CH/System pump and additional bypass (or
hydraulic separator) is required for heating systems outside
the flow requirements of the internal circulator pump. It
is recommended to have a Primary and Secondary loop
configuration with closely spaced Tee’s.
7.6
Making the gas connection
9
DANGER:
Only carry out work on gas piping and connections
if you are licensed for such work.
− Determine proper size gas pipe for the installation according
to the general and local rules.
− Do not forget the pipe connection losses and observe proper
size of the fittings.
− Install the furnished 3/4” female gas cock on the gas
connection (3/4” male on the boiler).
− Connect the gas pipe to the gas cock so that it is free from any
strain.
9
WARNING:
Failure to keep boiler area clear and free of
combustible materials, gasoline and other flammable
liquids and vapors can result in severe personal injury,
death or substantial property damage.
9
WARNING:
Before carrying out the connection, check that
the type of gas is that for which the appliance is set up.
9
WARNING:
Remove any combustible materials, gasoline and
other flammable liquids awmanuay from the hot water
pipes.
9
WARNING
: The boiler and its gas connections must be leak
tested before placing the boiler in operation.
9
CAUTION
: The boiler and its individual shut off valve must be
disconnected from the gas supply piping system during any
pressure testing of that system at test pressures in excess of
1/2 psi (3.5 kPa).
9
WARNING
: Before starting the Family PRO, and during initial
operation, smell near the floor and around the boiler for gas
or any unusual odor. Do not proceed with start-up if there is
any indication of a gas leak. Repair any leak at once.
Содержание Family PRO 42 IS
Страница 75: ...75 ...