Fulton Pulse HW (PHW) Fully Condensing Hydronic Boiler - Manual (Page 16)

© The Fulton Companies 2013
INSTALLATION
PHW-IOM-2013-0214
SECTION 2
2-10
Adhere to the following for water piping installation (Figure 6):
1. Connect hot water supply to heating system feed line.
2. Connect expansion tank.
3. Connect return water to boiler return water connection.
4. Install an air separator and air eliminator (air vent) which is necessary as
there is no built in boiler air eliminating feature.
5. If a sealed diaphragm-type expansion tank is used, install air eliminator in
hot water piping at air separator.
6. If an air cushion type expansion tank is used, pipe tank directly into boiler
supply.
7. On multi zoned systems (or a system with both space and domestic water
heating), air elimination must be provided either in the common piping or
every loop. When the boiler is installed at a higher level than baseboard
radiation, air elimination must be provided directly above the unit.
8. Install hot water circulator, remote mounted from boiler. Do not attach
directly to the boiler. Flexible connectors must be placed between the
circulator and the boiler.
NOTE: For all models, a no fl ow condition will not damage the heat
exchanger, however, adequate fl ow should be provided to prevent tripping
the boiler on high temperature limit.
9. For boilers with carbon steel or duplex steel heat exchangers, the
maximum allowable temperature diff erential across the heat exchanger
is 100 degrees F. Minimum outlet temperature for carbon steel units must
be 120 degrees F or greater. Maximum allowable working temperature for
carbon steel units is 240 F. High limit is set at 230 F, therefore operating at
a temperature greater than 220 F is not recommended. For duplex steel
units, maximum allowable working temperature is 210 F. High limit is set
at 200 F, therefore operating at a temperature greater than 190 F is not
recommended.
10. Install manual purging valves in all loops and zones. Install pressure
reducing (automatic fi ll) valve in the cold water fi ll line to the boiler system.
11. Check that the proposed operation of zone valves, zone circulator(s) and
diverting valves will not isolate air separator(s) and/ or expansion tank(s)
from the boiler.
12. Clearance from hot water pipes to combustibles must be at least 6”.
13. The boiler, when used in conjunction with a refrigeration system, must
be installed so the chilled medium is piped in parallel with the boiler
with appropriate valves to prevent the chilled medium from entering the
boiler. If the boilers are connected to heating coils, located in air handling
units where they may be exposed to refrigerated air circulation, such
boiler piping systems shall be equipped with fl ow control valves or other
automatic means to prevent gravity circulation of the boiler water during
!
WARNING
All information in this manual is for
reference and guidance purposes,
and does not substitute for required
professional training, conduct, and strict
adherence to applicable jurisdictional/
professional codes and regulations.
Do not use matches, candles, fl ame or
other sources of ignition to check for gas
leaks.
If the water supply must be temporarily
disconnected from the condensate
trap, the boilers must be turned off to
prevent accidental fl ue gas emission
into the boiler room. An uninterruptible
water supply is required and shall be
connected to the ¼” compression fi tting
on the condensate drain. The water supply
maintains a water level in the drain kit to
prevent accidental fl ue gas emission into
the boiler room.
Cements for plastic pipe are fl ammable
liquids and should be kept away from all
sources of ignition. Proper ventilation
should be maintained to reduce the
hazard and to minimize breathing of
cement vapors. Avoid contact of cement
with skin and eyes.
4
CAUTION
Some soap used for leak testing is corrosive
to certain types of metals. Clean all piping
thoroughly after completing the leak check.