AI
SERIES STEAM BOILER WITH T100 CONTROL
INSTALLATION INSTRUCTIONS
4211-195 05-22-12
Page 9
INSTALLATION
BOILER
AI Steam Generators must be installed by a licensed plumber and electrician to local and national codes.
AI Steam Boilers are intended for indoor use only.
Install upright and level side to side and front to back.
Not for space heating purposes.
Protect
from
freezing.
The steam generator is designed to sit directly on a hard level surface. The mounting location must be suitable to safely support over 125lb.s (57 kg)
for models AI12-AI24 and over 150lb.s (68 kg) for AI30-AI48. The boiler must be mounted upright and level and prevented from moving. Ensure that the
boiler is mounted high enough above the drain receptacle to allow proper drain
fl
ow. The weight of the boiler is generally suf
fi
cient to prevent movement.
Use ¼” bolts through the holes provided in the boiler’s feet to secure it in place
fl
oor if necessary.
The boiler’s back end (nearest the water gage) may be installed 1” (25 mm) or further from a wall or combustible surface. Use the lift handle to set the
minimum clearance by placing the boiler so the handle just touches the adjacent surface. Keep combustibles at least 1” (25 mm) away from left side, 8”
(200 mm) from right side plumbing and 6” (150 mm) from top of switches and steam valve. Do not store solvents, paints or other
fl
ammables near the
boiler.
PLUMBING
All valves are factory equipped with a short pipe nipple in their outlet. When attaching plumbing, hold these nipples while tightening. Do not
tighten plumbing by using a wrench on the brass valve bodies as this can damage the valve! Brass or copper lines are recommended for all plumbing; a
dielectric coupling may be necessary.
1. INSTALL WATER LINE
Run a ½” potable water feed line between the nearest cold water line and the WATER INLET
fi
tting on the boiler. Install a shut-off valve near the boiler.
When tightening this
fi
tting always use two wrenches so there will be no strain on the water inlet valve. The shut off valve must remain open during boiler
operation! Feedwater pressure may be between 20 and 100 psi (1.4 to 7 bar). Feedwater pressure should be limited to approximately 20 psi (1.4 bar) for
best performance. A water hammer prevention device is factory installed on all steam boiler boilers.
Excessive water hammer can damage a water valve,
preventing it from shutting off the water supply to the boiler
! Special water treatment may be required in your area – see AUTODRAIN section on page 16
for further details.
Flush water supply line thoroughly before
fi
nal hookup. Debris such as
fl
ux residue can prevent the inlet valve from fully closing. A grit
fi
lter is factory
installed on the boiler to trap large debris such as sand. Shut the water supply off and remove and clean the
fi
lter periodically as dictated by local water
conditions.
A customer supplied back-
fl
ow prevention device may be required in your area. Check local codes. To prevent water level sensing errors, back
fl
ow pre-
vention is necessary in installations where the steam boiler’s water supply is shared with another boiler or other nearby high usage connection.
2. INSTALL STEAM LINE
AI boilers come equipped with ¾”NPT steam outlets.
Do not place a shutoff device in the steam line!
Locate steam heads so bathers do not come into
contact with a steam head and so steam may not exhaust directly on any part of a bather’s body. Steam and steam heads are very hot and can cause
severe burns!
Run a ¾” copper steam line from the boiler to the steam room. The steam line should enter the steam room low on the wall, 15” to 18” (380 to 450 mm)
above the
fl
oor.
Leave suf
fi
cient space between the right (plumb-
ing) side and adjacent surfaces to allow servicing
the plumbing when needed. Provide at least 8”
clearance from the piping for access.
CAUTION
: Exposed plumbing may be over 200°F
(93°C) during normal operation and can present
a severe burn hazard. Be sure to protect people
from accidental contact!
All electrical access is from the left side and front
end (as viewed at right). Up to 480VAC may be
exposed during servicing. Leave space for service
access: at least 18” (460 mm) to front and left side,
6” (150 mm) above the pressure switches and
valves.
Refer to drawings on page 7 for clearances and
connections.
Install per code
:
your local codes may require
even greater clearances
.
Left
Front
