Boiler installation
7
15
We reserve the right to make any changes due to technical modifications.
Installation and maintenance instructions Gas Boiler Logano GC124 II/SP • Issue 07/2006
Installation of B-kit
The relief valve and the pressure/temperature gauge are
mounted on the boiler supply manifold which is attached
to the VK (supply) connection of the boiler (included in
B-kit).
Installing boiler supply VK:
z
Remove factory installed plastic inserts from boiler
supply (VK), boiler return (RK) and boiler drain (EL)
connections.
z
Install the 1¼"NPT nipple into boiler supply, the 1"
NPT nipple into boiler return and ¾" male NPT drain
valve into boiler drain connection.
z
Install 90° 1¼" x 1¼"NPT on 1¼"
NPT supply nipple
and face upward and install 90° 1¼" x 1"NPT elbow
on return nipple and face in desired direction.
z
Install GC124 1¼" x 1¼"NPT supply manifold into
supply connection (VK) of the boiler. Do NOT place
on return connection of the boiler!
z
Install first 90° ¾" street elbow in upper ¾" NPT tap-
ping of GC124 1-1/4" supply manifold and install
pressure relief valve into this ¾" tapping. Make sure
to orient the discharge of the relief valve horizontally.
Install the temperature/pressure gauge in the lower
3/4" tapping of the supply manifold.
Fig. 9
Installation of B-kit
1
Pressure relief valve ¾"
2
90° 3/4" street elbow
3
GC124 1-1/4" supply manifold
4
Pressure & temperature gauge
5
90° 1-1/4" NPT elbow
6
1-1/4" NPT nipple
7
Boiler drain ¾" NPT (backside of boiler)
8
90° 1-1/4" x 1" NPT elbow
9
1" NPT nipple
1
2
4
5
8
VK
RK
6
9
EL
7
3
USER NOTE
Install the relief valve after the leak test.
(
Î
Chapter 7.5, page 20).
The relief valve must be installed in a ver-
tical position.
The relief valve must also be installed in
accordance with the requirements of the
ANSI/ASME Boiler and Pressure Vessel
Code, Section IV.
USER NOTE
We recommend installing a y-strainer (ac-
cessory) in the boiler return connection to
reduce build-up of debris on the water
side inside the boiler.
USER NOTE
Ensure compliance with all state and local
regulations pertaining to the installation of
boiler systems.
