Alpine Installation, Operating, and Service Instructions

103448-02 - 6/13 65
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
Max
Allowable
Flow thru
Boiler,
GPM @
20°F DT
Flow,
GPM
@ 25°F
DT
Min Req’d
Flow thru
Boiler,
GPM
@ 35°F
DT
Alliance SL
Models to
be installed
As Part of
Near-Boiler
Piping
Alliance
SL
Coil
Required
Flow Rate,
GPM
Alliance
SL Coil
Head
Loss, Ft @
Required
Flow Rate
Combined
Boiler,
Alliance SL
& Piping
Loop Head
Loss, Ft
*Recommended
Circulator
Make & Model for
Alliance SL installed
as Part of
Near-Boiler Piping
Reference
Figure
Notes
ALP080B 1 1 1 1 7.3 5.8 4.2
SL27 6 9 19.3
Taco 0014
Grundfos UPS26-99
FC (second speed)
41B
SL35 6 9 19.3
SL50 6 9.5 19.8
SL70 6 10 20.3
SL119 14 17 NA Not Recommended NA Note 1
ALP105B 1 1 1 1 9.6 7.7 5.5
SL27 6 9 19.3
Taco 0014
Grundfos UPS26-99
FC (second speed)
41B
SL35 6 9 19.3
SL50 6 9.5 19.8
SL70 6 10 20.3
SL119 14 17
NA Not Recommended
NA Note 1
ALP150B 1 1 1 1 13.8 11 7.9
SL27 6 9
41B Note 2
SL35 6 9 SL50 6 9.5 SL70 6 10
SL119 14 17 36
Taco 1400-45
Grundfos UPS 32-80/2
(max speed)
41B
NOTES: Note 1: Required Alliance SL Coil Flow Rate exceeds Max Allowable Flow Rate thru Boiler; this Boiler/Alliance SL combination may result in boiler heat exchanger erosion and noise. Note 2: Required Alliance SL Coil Flow Rate is below Min Required Flow Rate thru Boiler; this Model can only be installed as separate heating zone off system header - see Figure 40A for alternate IWH piping. Indirect Water Heater Circulator must be selected by an installer based on Alliance SL required coil ow and corresponding coil head loss shown as well as total equivalent length of such separate zone. Note 3: Combined Head Loss shown corresponds to Min Required Flow Rate thru Boiler. * Circulator Models shown are not equipped with internal ow check valve (IFC). When selecting Circulators with IFC 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.
Table 20: Recommended Circulator Models for Alpine (ALP) Boilers and Alliance SL Indirect Water Heaters Installed as Part of Near-Boiler Piping Up to 75 Ft. Equivalent Length - Domestic Hot Water Circulator
VI. Water Piping and Trim E. Multiple Boiler Installation (continued)