Slant/Fin EH - Manual (Page 6)

START-UP
NOTE: Make sure that all circuit breakers ahead of and at the
boiler are OFF.
Fill System
See Figures 2 through 4 for suggested purge valve and blocking
valve. If system is filled but not purged, radiators must be vented
individually, to prevent air blocking of water flow. Fill approxi-
mately 12 psi (cold water), whether automatic or manual fill is
used. DO NOT apply full line pressure to system; boiler and
relief valve are rated at 30 or 50 psi (see rating plate). Suddenly
applied main pressure can exceed 100 psi.
Air Elimination
Diaphragm tank and air vent valve are recommended, see
Figures 2 through 4. Air remaining in system will vent from the
automatic vent valve during system operation. Valve cap must be
loose or removed to allow automatic venting. Open relief valve
briefly after filling to pressure, to make sure boiler is free of air.
Bypass flow adjustment (Figure 3)
Close bypass valve. Turn down all zone thermostats. Inspect all
zone valves to be sure all are closed. Put a jumper on TT termi-
nals. Close ALL panels and turn on the 15 AMP control circuit
breaker ONLY. Be certain that the flow switch wires are not con-
nected to the flow switch terminals and the ends of the wires are
taped. Connect the ohmmeter or other continuity tester across
the common terminal and the terminal that is normally open dur-
ing NO FLOW. Slowly open bypass valve until continuity tester
lights or ohmmeter kicks to zero: flow switch now has closed
contacts, indicating required minimum bypass flow rate when
piping circuits are shut off. Bypass valves should be locked at
this position. Shut OFF ALL circuit breakers ahead of and at
boiler and open CONTROL PANEL (left hand FRONT) COVER.
Remove jumper on TT terminals. Connect flow switch wire to
flow switch terminals. Replace CONTROL PANEL COVER.
Connect zone valve end switches (in parallel) to thermostat.
See Figure 5 and wiring diagram on boiler.
Check for Proper Boiler and System Operation
To check for proper boiler and system operation, perform the fol-
lowing procedure:
1. Turn up all room thermostats.
2. On boiler models with a "Monitron" control system (model
number on rating plate contains a "M"), there will be a delay
of approximately 1 minute before the first indicator light on
the control panel goes on and an additional 1 minute
between each additional stage.
3. On boilers with a standard control system (model number on
rating plate contains a "S"), there might be a delay of 5 min-
utes before all circuits are energized.
4. Current may be checked by a qualified electrician at the feed-
er panel and compared to the values shown in Table 2.
5. Water flow through the boiler should be sufficient to keep the
flow switch closed. The limit thermostat should also remain
closed. The LOW LIMIT of the dual limit aquastat is factory
set at a normal temperature of 180°F or 82°C; it may be
increased for the purpose of check-out if the load is very low.
The aquastat is located on the left end of the boiler behind a
round cover plate.Loosen screw and rotate cover to
view aquastat.
OPERATION
(Models equipped with Sequential Control System)
These models contain a "S" in the model number which is
located on the rating plate on the top surface of the boiler.
IMPORTANT:
DO NOT operate boiler until the following criteria have
been met:
1. Must be installed by qualified heating and electrical
contractors in accordance with instructions in this
manual.
2. Must be installed in compliance with local codes.
3. Must be inspected and approved by installing contrac-
tors and any local authority having jurisdiction, and be
approved for operation by them.
• Ask the installer to explain operation of the entire heating
system.
• Turn on all circuit breakers for boiler and circulator.
• Adjust wall thermostat to required temperature. If room
temperature is lower than the thermostat setting, the first
heater stage will go on immediately and the balance of the
heater stages will go on one at a time with a delay of
between several seconds and 1-1/2 minutes between
stages.
• In mild weather you may wish to reduce the total output of
heat. You may do this by turning off one or more of the cir-
cuit breakers on the boiler.
IMPORTANT
You must turn on the circuit breaker marked "15" in order to
operate the boiler control system. You then may turn on any
one or more of the other circuit breakers (those marked 25,
30,35 or 50), depending on the amount of heat required.
PERIODIC INSPECTION
The hot water system, which includes the Monitron boiler, the
radiators and water control devices, should remain filled with
water at all times. DO NOT drain except to make repairs or to
prevent freeze-up during extended cold weather shutdown.
The pressure/temperature gauge on the Monitron should be
checked frequently: at the highest operating temperature,
pressure should be the same throughout the heating season.
If pressure (at a constant temperature) consistently rises or
falls over a period of time, a fill valve leak, a system leak or
compression tank malfunction is indicated. Leaks anywhere
in the system must be repaired without delay. Regular addi-
tion of fresh water to replenish leaks adds oxygen and lime.
Oxygen corrosion will cause further leaks and parts failure,
lime buildup on heating elements will cause element failure
due to overheating. If any leaks are found, or if pressure
changes, call for service immediately.
IMPORTANT
Under no circumstances should any electrical wiring or
internal controls be touched, except by an authorized
electrician (wiring and controls) or heating system ser-
vice expert (system service, repair, shutdown). Any
mechanical adjustments to the heating equipment and
system must be made by a qualified heating
serviceperson.
SLANT/FIN CORPORATION, Greenvale, N.Y. 11548 • Phone: (516) 484-2600
FAX: (516) 484-5921 • Canada: Slant/Fin LTD/LTEE , Mississauga, Ontario
www.slantfin.com