U.S. Boiler Company Alpine ALP080B Installation, Operating And Service Instructions Download

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103448-10 - 6/18

Table 13: Recommended Circulators for 50 ft. Equivalent ft. Near Boiler Piping [Approximately 20 ft.
Straight Pipe, (4) 90° Elbows, and (2) Full Port Ball Valves]

Boiler
Model

Boiler Supply

Connection,

Inch, FPT

Boiler

Return

Connection,

Inch, FPT

Near-Boiler

Piping

Supply Pipe

Size, Inch

Near-Boiler

Piping

Return Pipe

Size, Inch

Flow, GPM

@ 25°F

Temp.

Differential

Combined

Boiler &

Piping Loop

Head Loss, Ft.

Recommended

Circulator

Make & Model

ALP080B

7.3

(1)

14.7

Taco 0015 (Speed 3)

Grundfos UPS

15-58 (Speed 2)

ALP105B

7.7

14.3

Taco 0015 (Speed 3)

Grundfos UPS

26-99 (Speed 1)

ALP150B

11.0

11.7

Taco 0015 (Speed 3)

Grundfos UP

26-99 (Speed 2)

ALP210B

1¼

15.5

11.7

Taco 0014

Grundfos UP

26-99 (Speed 2)

ALP285B

1¼

1½

21.5

12.3

Taco 0011

Grundfos UP

26-99 (Speed 3)

Notes:

(1)

Temperature Differential = 20°F

All Circulators shown are not equipped with internal flow check valve (IFC).

When selecting Circulators other than recommended, contact Circulator Manufacturer for sizing information.

Near-Boiler Piping Size shown is based on 2 to 5.5 Ft/Sec. velocity range to avoid potential noise and pipe erosion.

VI. Water Piping and Trim

(continued)

C. Standard Installation Requirements

Observe the following guidelines when making

the actual installation of the boiler piping:

1. Safety Relief Valve (Required)

- The relief

valve is packaged loose with boiler and

must be installed in the location shown in

Figure 20 “Factory Supplied Piping and Trim

Installation”. The relief valve must be installed

with spindle in vertical position. Installation

of the relief valve must comply with ASME

Boiler and Pressure Vessel Code, Section IV.

The standard factory shipped relief valve is

rated for 30 PSI maximum working pressure

for ALP080B through ALP285B. Optional 50

PSI, 80 PSI and 100 PSI maximum working

pressure rated relief valves are available. If

the valve is to be replaced, the replacement

valve must have a relief capacity equal or

exceeding the boiler DOE Heating Capacity

(models ALP080B through ALP285B). Pipe

the relief valve discharge to a location where

hot water or steam will not create hazard or

property damage if the valve opens. The end

of the discharge pipe must terminate in an

unthreaded pipe. If the relief valve is not piped

to a drain, it must terminate at least 6” above

the floor. Do not run relief valve discharge

piping through an area prone to freezing. The

termination of discharge piping must be in

area where it will not become plugged by

debris.

2 Circulator (Required)

–

Usually at least two

circulators will be required to properly install a

Alpine™ Series boiler. See Paragraph B above

for information on sizing the circulators.

3. Expansion Tank (Required)

–

If this boiler

is replacing an existing boiler with no other

changes in the system, the old expansion tank

can generally be reused. If the expansion tank

must be replaced, consult the expansion tank

manufacturer’s literature for proper sizing.

4. Fill Valve (Required)

–

Either manual

(recommended) or automatic fill valve may be

used. However, if automatic refill is employed,

a water meter must be added to evaluate the

makeup water volume taken after initial fill

and eliminate any water leakage as early as

possible.

5. Automatic Air Vent (Required)

–At least one

automatic air vent is required. Manual vents

will usually be required in other parts of the

system to remove air during initial fill.

Burn Hazard. Safety relief

valve discharge piping must be piped such
that the potential of severe burns is eliminated.
DO NOT pipe in any area where freezing could
occur. DO NOT install any shut-off valves,
plugs or caps. Consult local codes for proper
discharge piping arrangement.

CAUTION