Immergas 3.012944 Quick Start Manual page 2

Cod. 1.016915 - Rev. ST.001054/000
THIS SHEET MUST BE LEFT WITH THE USER ALONG
WITH THE BOILER INSTRUCTION BOOK
GENERAL WARNINGS.
All products are protected with suitable transport packaging.
The material must be stored in dry environments and protected against weath-
ering.
This instruction manual provides technical information for installing the kit.
As for the other issues related to kit installation (e.g. safety in the work site,
environment protection, injury prevention), it is necessary to comply with the
provisions specified in the regulations in force and principles of good practice.
Improper installation or assembly of the appliance and/or components, acces-
sories, kit and devices can cause unexpected problems to people, animals and
objects. Read the instructions provided with the product carefully to ensure a
proper installation.
Installation and maintenance must be performed in compliance with the regula-
tions in force, according to the manufacturer's instructions and by authorised
professionally qualified staff, intending staff with specific technical skills in the
plant sector, as envisioned by the Law.
INSTALLATION.
To connect and install the recirculation kit, proceed as follows (fig. 1):
- Remove voltage from the appliance by disconnecting the switch upstream
from the boiler.
- Disassemble the lower protection grid and drain the boiler from water using
the draining tap.
Before performing this operation, close the boiler cold water inlet valve and
open any domestic hot water valve of the system in order to allow air into the
storage tank.
Kit composition:
Ref. Qty Description
1 1 G 1/2" fitting
2 1 Ø 14 Pipe recirculation
connection
3 1 G 1/2" nut
4 1 klingersil flat gasket 18
x 10 x 2
5 1 Nitrile OR 18.64 x 3.53
6 1 Brass probe fitting G 1/2"
8
7
6
5
4
1
2
3
Fig. 1
BOILER DHW RECIRCULATION KIT
ZEUS MINI - VICTRIX ZEUS 26 KW
CODE 3.012944
- Disassemble the magnesium anode cap placed on the lower flange of the stor-
age tank.
- Disassemble the magnesium anode (8) from the brass cap and remount it on
the 1/2" brass probe fitting (6) provided with the recirculation kit, placing the
gasket previously removed in-between (7).
- Mount the brass probe fitting (6) with the magnesium anode connected (8)
on the lower flange of the storage tank paying attention to apply the O.R. (5)
provided with the kit for the hydraulic seal.
- Connect the recirculation pipe (2) to the probe fitting (6) placing the flat gasket
(4) provided with the kit in-between.
- Connect the recirculation pipe (1) To the 1/2" DHW recirculation system (1)
supplied with the kit.
- Make sure you have closed the storage tank drain valve and close the domestic
hot water system valve which was opened previously.
- Reopen the domestic cold water inlet which was closed previously.
- Reassemble the lower protection grid.
- Power the boiler.
Attention: To guarantee proper operation of the DHW recirculation, we recom-
mend installing a mixing valve (systems with solar integration), one-way valves,
and a circulator following the diagrams in figure 2, according to the plant require-
ments. The hydraulic diagrams below are only examples. The components
described (Ref 1 ÷ 3 fig. 2) are not provided with this optional kit but must be
purchased separately.
System with solar integration
Boiler
System with recirculation only
Boiler
Components to be purchased
separately:
1 - Mixing valve
2 - Recirculation pump
3 - One way check valves
Key:
AC - domestic hot water
outlet
AF - domestic cold water
inlet
RC - domestic hot water
recirculation
Fig. 2