Weil-McLain PFG SERIES Manual de usuario

I. General Requirements

A. Furnish and install _____ (qty) packaged atmospheric gas cast iron sectional

boiler(s).

B. Install packaged boiler unit(s) according to manufacturer’s installation

instructions. All work to be done in a neat and workmanlike manner.

C. Weil-McLain _____ (qty) PFG-_____ (size) -PIDN, -PIN, -SPN, packaged

water boiler(s) capable of burning natural gas (propane available as product

option).

D. The inlet natural gas pressure to the boiler gas valve(s) should be a minimum

of 5” w.c. and a maximum of 13” w.c. If inlet natural gas pressure exceeds

13” w.c., a 100% lock-up type gas pressure regulator of adequate size must

be installed in gas supply piping and adjusted to prevent pressure in excess

of 13” w.c.

E. Boiler(s) shall have I=B=R Hydronics Institute gross output(s) at 100% firing

rate __________ MBH per boiler.

F. Boiler(s) shall be 80% minimum DOE efficient as required by National

Appliance Energy Conservation Act or ASHRAE 90.1.

G. Boiler(s) shall be manufactured by ISO 9001 registered company to conform

to Section IV of the ASME Boiler and Pressure Vessel Code.

1. Individual sections (and section assembly) to be hydrostatically

pressure tested at factory in accordance with ASME requirements.

2. Maximum allowable working pressure 50 PSIG water cast as part of

section with ASME symbol.

H. Regulatory Requirements

1. Boiler(s) and controls to comply with applicable regulations.

2. Add option for local codes, i.e. Mass. Code, BAR.

I. Boilers shall have a 10-year non-prorated warranty as outlined in written

warranty.

PFG SERIES BOILER

SUGGESTED SPECIFICATIONS

II. Product

I. Acceptable boiler manufacturer(s) include(s);

1. Weil-McLain only, as specified in Part I, Paragraph C.

2. Other manufacturer or other Weil-McLain boiler(s) must comply with

specifying engineer’s requirements, including:

a) Full intent of these specifications, and

b) Provide complete submittal including literature, manuals, wiring

diagrams, fuel piping diagrams, and list of similar installations.

The alternate must be of similar size and footprint, piping

configuration, clearance requirements and heating surface

area.

c) Submittal presented to engineer at least seven working days

before bid opening for approval. Substitutions are not

permitted after contract is awarded.

3. Energy Management Control System(s) must be tested and approved

for installation with specified boiler by boiler manufacturer.

J. Boiler Construction

1. Boiler sections

a) Assembled with draw rods.

b) Made with sealing grooves for high temperature cope seal and

silicone sealant to assure permanent gas-tight seal.

c) Provided with sufficient tappings to install required controls.

2. Boiler(s)

a) Provided with cast-in air elimination to separate air from

circulating water.

b) Provided with expansion tank tapping to divert separated air to

expansion tank.

c) Constructed to provide balanced water flow through entire

section assembly using single supply and return connections.

No external headers are necessary.

K. Boiler Foundation(s)

1. Installer to construct needed support and level concrete boiler

foundation(s) where boiler room floor is uneven or will not support

weight of boiler(s).

2. Boiler(s) installed in a residential garage shall be installed so the

burners are at least 18” above the floor.

L. Boiler Trim

1. All electrical components to be high quality manufacture and bear UL

label.

2. Water boiler(s) controls furnished:

a) High limit temperature control (240º F maximum allowable

boiler water temperature.

b) Combination pressure-temperature gauge. Gauge dial clearly

marked and easy to read.

c) ASME certified pressure relief valve, set to relieve at 30 PSIG.

Optional relief valves available up to and including maximum

allowable working pressure. Side outlet discharge type;

contractor to pipe outlet to floor drain or near floor, not to any

area where freezing could occur.

M. Boiler Manuals

1. The boiler(s) shall be provided with complete instruction manuals,

including:

a) Installation Manual

b) User’s Manual

c) Gas Control Supplements

Weil-McLain

500 Blaine Street

Michigan City, IN 46360-2388

http://www.weil-mclain.com

C-811(699)

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