Buderus Logano GC124 II/SP Installation And Service Instructions Manual page 15

Boiler installation
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:
Remove factory installed plastic inserts from boiler
supply (VK), boiler return (RK) and boiler drain (EL)
connections.
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.
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.
Install GC124 1¼" x 1¼"NPT supply manifold into
supply connection (VK) of the boiler. Do NOT place
on return connection of the boiler!
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.
USER NOTE
Install the relief valve after the leak test.
( 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.
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
1
2
3
4
5
7
EL
RK
8
9
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
7
VK
6
15