Burnham ALPINE Installation, Operation And Service Instructions page 42

Vi. Water Piping and Trim (continued)
2. Relief Valve Piping, ALP399 and ALP500 Boiler
Models
a. Locate and remove (2) ¾" NPT x close black
nipples, ¾" NPT black tee, ¾" FPT x ¾" FPT
Pressure Relief Valve, ¾" NPT Drain Valve.
b. Install close nipple into tee branch, then, screw
the assembly into boiler left side front ¾"
tapping making sure tee run outlets are in vertical
plane and parallel to boiler side.
c. Install the second close nipple into tee run top
outlet.
d. Mount ¾" FPT x ¾" FPT Pressure Relief Valve
into the tee top outlet.
e. Install Drain Valve into the tee bottom outlet.
3. Temperature /Pressure Gauge Piping, ALP080 thru
ALP210 Boiler Models
a. Locate and remove 1" NPT x 4" long black
nipple, 1" x 1" x 1" NPT black tee, 1" x ¼"
NPT black reducing bushing and Temperature &
Pressure Gauge.
b. Mount the nipple into 1" boiler supply tapping
(see Figures 1A and 1B), then, install the tee onto
the nipple, making sure 1" branch outlet is in
horizontal plane and facing the boiler front.
c. Install 1" x ¼" NPT black reducing bushing
into the tee branch, then, put in Temperature &
Pressure Gauge.
4. Temperature /Pressure Gauge Piping, ALP285
Boiler Model
a. Locate and remove 1¼" NPT x 2" long black
nipple, 1¼" x 1¼" x ¾" NPT black tee, ¾" x ¼"
NPT black reducing bushing and Temperature &
Pressure Gauge.
b. Mount the nipple into 1¼" boiler supply tapping
(see Figures 1B and 1C), then, install the tee onto
the nipple, making sure ¾" branch outlet is in
horizontal plane and facing the boiler front.
c. Install ¾" x ¼" NPT black reducing bushing
into the tee branch, then, put in Temperature &
Pressure Gauge.
5. Temperature /Pressure Gauge Piping, ALP399 and
ALP500 Boiler Models
a. Locate and remove 1½" NPT x 2" long black
nipple, 1½" x 1½" x ¾" NPT black tee, ¾" x ¼"
NPT black reducing bushing and Temperature &
Pressure Gauge.
2
b. Mount the nipple into 1½" boiler supply tapping
(see Figures 1B and 1D), then, install the tee
onto the nipple, making sure ¾" branch outlet is
in horizontal plane and facing the boiler front.
c. Install ¾" x ¼" NPT black reducing bushing
into the tee branch, then, put in Temperature &
Pressure Gauge.
Piping System To Be Employed.
B.
Alpine (ALP) boilers are designed to operate in a closed
loop pressurized system. Minimum pressure in the
boiler must be 12 PSI. Proper operation of the Alpine
(ALP) boiler requires that the water flow through the
boiler remain within the limits shown in Table 11, any
time the boiler is firing.
nOTiCE
Failure to maintain the flow through boiler within
specified limits could result in erratic operation or
premature boiler failure.
1. Near boiler piping must isolate ALP boiler from
system piping via closely spaced tees to insure
specified flow range through boiler any time the
boiler is firing:
a. The flow rate through the isolated near-boiler
loop is maintained by factory recommended and
installer supplied boiler circulator.
b. The flow rate through the isolated near-boiler
loop is completely independent of the flow rate
through the heating system loop(s).
c. The flow rate through the heating system loop(s)
is controlled by installer sized/provided system
loop circulator(s).
d. This piping arrangement can be used either for
space heating-only applications or space heating
with indirect water heater(s) applications.
Space heating only - refer to Table 12 and
i.
Figure 31 "Near Boiler Piping - Heating
Only" as applicable.
ii. Space heating plus indirect water
heater(s) - refer to Table 12 and Figure 32
"Near Boiler Piping - Heating Plus Indirect
Water Heater" as applicable.