Solo Plus Instructions 1-800-782-9927 Version 12-13
Tarm Biomass · 4 Britton Lane · Lyme, NH 03768
Boiler Installation & Start-up > Plumbing Connections
Page 23
Using a 3‖ nipple, pipe out from the supply tapping #2 of the boiler to a
1¼‖x 1¼‖x ¾‖ tee
(T1).
From the ¾‖ outlet of
(T1)
install a ¾‖x 2‖ nip-
ple and ¾‖ coupling. Install a Honeywell
L4006B
or equivalent into the
¾‖ coupling using a ¾‖ immersion well.
The following is not needed for the ONLY BOILER installation
.
Using a 3‖ nipple pipe out from
(T1)
to another 1¼‖x 1¼‖x ¾‖ tee
(T2)
From the ¾‖ outlet of
(T2)
install a ¾‖x 2‖ nipple and ¾‖ coupling. In-
stall a Honeywell
L4006A
or equivalent into the ¾‖ coupling using a ¾‖
immersion well.
T1
T2
L4006B
L4006A
Supply Connections
Using a 3‖ nipple, pipe out from the return tapping #1 of the boiler to a
1¼‖x 1¼‖x 1‖ tee
(T4).
From the 1‖ outlet of
(T4)
pipe the return from
the overheat zone. You might have to angle the tee slightly to navigate
around the flue pipe.
T4
Return Connections
Using a 3‖ nipple, pipe out from tapping #16 of the boiler to a
1¼‖x ¾‖x 1¼‖ tee
(T3)
. From the ¾‖ outlet of
(T3),
install the Con-
braco 10-407-05 30psi supplied pressure relief valve.
The relief valve
must be installed within 6” of the boiler in the vertical position.
THIS VALVE MUST BE INSTALLED TO INSURE SAFE OP-
ERATION OF THE BOILER AND FOR PROTECTION OF THE
HEATING SYSTEM
. Pipe the ¾‖ discharge line from this valve to
within 6‖ of the floor with no reduction in pipe size. Using a 1¼‖ x 1‖
reducer pipe out from
(T3),
install 1‖ street elbow. From elbow pipe to a
normally open Automag zone valve and then to the supply of the over-
heat zone, downstream of any flow check valve.
T3
To Overheat
Pressure
Relief
Valve
Overheat and Pressure
Relief Valve Connections
Using a 1¼‖x ¾‖ reducer, pipe out from tapping #18 of the boiler. Install
boiler drain into reducer. This is the best connection for filling the boiler
with water.
Boiler Drain