Weil-McLain SlimFit Manuale delle Istruzioni Scaricare il pdf (Pagina 14)

Part number 550-100-116/0714

SlimFit

™

COMMERCIAL CONDENSING GAS-FIRED WATER BOILER

— Boiler Manual

Install water piping

Use two wrenches when tightening water piping at boiler,

using one of the wrenches to prevent the boiler interior pip-

ing from turning. Failure to support the boiler piping con-

nections to prevent them from turning could cause damage

to boiler components.

General piping information

Additional controls, when required

e Sola module uses temperature sensors to provide both

high limit protection and modulating temperature control,

and is UL353 Limit Controls certied to meet ASME CSD-1

and Section IV requirements. e boiler is equipped with a

manual reset low water cut-o. e Sola module also provides

low water protection by sensing the temperature of the heat

exchanger. Some codes/jurisdictions may require additional

external controls.

Additional limit controls

1. Consult local requirements for other codes/standards to determine if

additional limit devices are needed.

-ULTITEMPERATURE SYSTEMS  If the heating system

includes circuits that require lower temperature water (radi-

ant slab circuits, for example) as well as higher temperature

circuits, it is recommended to protect low-temperature

circuits with limit controls that are wired to a Sola external

limit circuit (ILK terminals for manual reset or LCI terminals

for automatic reset).

2. See instructions beginning on page51 for wiring information.

a. e Sola control provides two sets of limit control contacts  one

set will cause automatic reset (LCI) and the other will cause manual

reset (ILK) of the Sola control.

b. e Sola control can be reset using the RESET switch on top of

the boiler.

Low water cutoff

1. A push-to-test low water cuto is factory-installed in the boiler. e low

water cuto probe is mounted on the front of the boiler heat exchanger.

2. e low water cuto is manual reset (pushbuon on top of boiler) and

is equipped with a push-to-test switch (top of boiler).

Pressure/temperature gauge

1. Mount the pressure/temperature gauge (shipped loose with the boiler)

in the ¼-inch tapping on top of the boiler supply outlet pipe.

e boiler is shipped with a ¼” NPT pressure and tempera-

ture gauge which has a pressure range up to 75 psig. is

gauge meets ASME requirements up to a relief valve seing

of 50 psig. For higher pressure rated relief valves, a dierent

pressure and temperature gauge with a higher pressure range

is required. When installing a gauge that requires a larger

tapping than the ¼” NPT tapping in the boiler supply mani-

fold, provide an additional tapping in the near boiler piping

BEFORE any isolation valve.

Installing relief valve

$/ ./4 INSTALL A RELIEF VALVEWITH

A PRESSURE HIGHER THAN  03)'

is is the maximum allowable relief valve

seing for the SlimFit boiler. e boiler is

shipped with a 30PSIG relief valve. See Re-

placement parts in the back of this manual

for alternate pressure seing relief valves.

4OAVOIDWATERDAMAGEORSCALDING

DUETORELIEFVALVEOPERATIONASPER

local or state codes

Discharge line must be connected to re-

lief valve outlet and run to a safe place of

disposal. Terminate the discharge line in

a manner that will prevent possibility of

severe burns or property damage should

the valve discharge.

Discharge line must be as short as possible

and be the same size as the valve discharge

connection throughout its entire length.

Discharge line must pitch downward from

the valve and terminate at least 6” above

the oor drain where any discharge will be

clearly visible.

e discharge line shall terminate plain,

not threaded, with a material serviceable

for temperatures of 375 °F or greater.

Do not pipe the discharge to any place where

freezing could occur.

No shutoff valve shall be installed be-

tween the relief valve and boiler, or in the

discharge line. Do not plug or place any

obstruction in the discharge line.

Test the operation of the valve aer lling

and pressurizing system by liing the lever.

Make sure the valve discharges freely. If the

valve fails to operate correctly, replace it

with a new relief valve.

Failure to comply with the above guidelines

could result in failure of the relief valve

to operate, resulting in the possibility of

severe personal injury, death or substantial

property damage.

Backﬂow preventer

1. Use backow check valve in cold water supply as required

by local codes.

Install relief valve

1. Install relief valve (shipped loose with the boiler) in the

1¼-inch tapping on top of the boiler supply outlet pipe.

2. Connect discharge piping to safe disposal location, follow-

ing guidelines in the

7!2.).' below.

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 127 128

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Weil-McLain SlimFit Manuale delle Istruzioni Pagina 14

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