Bell & Gossett S11574C Heat Transfer Package with Air Separation - Manual (Page 6)

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2.15 Steam Supply and Piping
2.16 Care must be taken when installing the steam supply
piping to insure no condensate will flow to the pres-
sure reducing (control) valve. Condensate impinge-
ment on the heat exchanger tubes will lead to perma-
nent failure.
2.17 Condensate Piping
2.18 Review the condensate trap Installation, Operation, &
Maintenance manual prior to connecting the trap to
the heat exchanger. Install all recommended valves
and fittings to allow servicing the trap while the unit is
in operation. Install a strainer upstream of the trap to
protect the unit from material that may prevent it from
operating properly. Install a blowdown valve on the
strainer and periodically purge the strainer of debris.
2.19 Do not connect condensate line from trap to conden-
sate main that is above the heat exchanger without
making special provisions to keep the heat exchanger
totally free of condensate.
2.20 If traps are installed in parallel, the following should be
done. Service valves should be installed before and
after each trap so that each trap can be serviced while
the other trap remains in service. Unions should be
installed before and after each trap, between the trap
and service valves. These allow the trap to be
replaced without shutting down the system.
2.21 Drains
2.22 There is a drain plug in the pump volute.
2.23 There is a drain on the bottom of the air separator.
This port could be used as the primary drain for the
return piping since it is the low point of the system.
2.24 The supply main cannot be drained through the air
separator above because the Triple Duty valve acts as
a check valve. The lower port on the back of the Triple
Duty valve may be used as a drain for this section of
the piping. If this is undesirable, a separate drain point
must be provided in the supply piping.
2.25 Since the relief valve is located relatively high above
the floor, it is recommended that the outlet side of the
valve be piped to an open drain per local codes. The
pipe size must not be less than the outlet size and the
drain piping must run so as to avoid water trapping.
The end of the drain pipe must not be threaded to
avoid installation of a valve or plug.
2.26 The expansion tank drain is provided with a hose bibb
valve, therefore a garden hose can be used conve-
niently for draining.
2.27 Wiring
2.28 Check power leads in accordance with wiring dia-
gram enclosed in control cabinet, if this option was
supplied. If a control panel was not supplied, make
wiring connection per the motor manufacturer’s
recommendations.
2.29 Lubrication
2.30 Before starting, all pumps and motors should be
checked for proper lubrication.
3.0 PUTTING THE UNIT INTO SERVICE
3.1 The following procedure is suggested for the initial
start-up.
3.2 Fill the system with water.
3.3 With the fill valve left open, vent all of the high points
in the piping system to remove the trapped air.
3.4 On units with ASME compression tanks, open the
vent valve located on the Airtrol Tank Fitting. Bleed
the air from the tank until water emits from the valve.
Close the valve.
3.5 Align pump coupling (see pump instruction sheet).
Check Bearing Lubrication.
3.6 Check pump rotation, 3 Phase motors only.
WARNING: Electrical shock hazard. Inspect all
electrical connections prior to powering the unit.
Wiring connections must be made by a qualified electri-
cian in accordance with all applicable codes, ordinances,
and good practices. Failure to follow these instructions
could result in serious personal injury, death, and/or
property damage.
DANGER: Explosible. Do not operate the heat
exchanger outside the limits defined on the heat
exchanger nameplate. Failure to follow these instruc-
tions will result in serious personal injury, death,
and/or property damage.
CAUTION: Burn hazard. The system may contain
steam or hot water under pressure. Close the valves
to isolate the system. Drain and vent the system and allow
surfaces to reach acceptable temperatures prior to ser-
vicing. Failure to follow these instructions could re-
sult in property damage and/or moderate personal
injury.
WARNING: Conduit grounds are not adequate.
A separate ground wire must be attached to ground
lug provided in the enclosure to avoid potential safety
hazards. Failure to follow these instructions could re-
sult in serious personal injury, death, and/or property
damage.
CAUTION: Seal damage may occur. Do not run
pumps dry. Fill and vent the pump volute prior to
operation. Failure to follow these instructions could re-
sult in property damage and/or moderate personal
injury.
WARNING: Rotating shaft can catch loose clothing.
Do not operate the pump without all guards in place.
Failure to follow these instructions could result in
serious personal injury, death, and/or property damage.