HTW SR24 Manuel De L'utilisateur Et D'installation page 43

3.3.3 Switch setting
PCB has 2 bits of switches.
ON
S W 2
1
SG ON
MODE
FACTORY
SETTING
3.3.4 System wiring diagram
The units of water tank can only be connected to the system of
DHW. The units shall be connected according to the following
electric diagrams, depending on the applicable powering scheme
and according to the local regulations:
In the case of independent supply to the tank and to the outdoor
unit: (The electric heating power supply line must be connected.)
Tank Unit
HL HN
220-240V~ 50Hz
Power supply to
electrical heater of the
tank and OU
CB
ELB
Earth
3.4 Installation checklist
3.4.1 Location
The flooring beneath the water heater must be able to support
the weight of the unit when filled with water.
Located indoors (such as a basement or garage) and in a
vertical position. Sheltered from freezing temperatures.
Provisions made to shelter the area from water damage.
Metal drain pan installed and piped to an adequate drain.
Sufficient space to service the water heater.
For setting SG control
ON
1
SG OFF
Outdoor Unit
DHW
L N S L N S
Communication
(Power IDU PCB)
(Connection to
Outdoor Unit D-way)
Power supply to
Outdoor Unit
The unit cannot be placed into any type of closet or small
enclosure.
The site location must be free from any corrosive elements in
the atmosphere such as sulfur, fluorine, and chlorine. These
elements are found in aerosol sprays, detergents, bleaches,
cleaning solvents, air fresheners, paint, and varnish
removers, refrigerants, and many other commercial and
household products. In addition excessive dust and lint may
affect the operation of the unit and require more frequent
cleaning.
The ambient air temperature must
below 43ºC.If the ambient air temperature falls outside these
upper and lower limits the electrical elements will be
activated to meet the hot water demand.
3.4.2 Water System Piping
PTR valve(Temperature and pressure relief valve) properly
installed with a discharge pipe run to an adequate drain and
sheltered from freezing.
All piping properly installed and free of leaks.
Unit completely filled with water.
Water temperature limit valve or mixer tap(recommanded)
installed per manufacturer's instructions.
3.4.3 Condensate Drain Line Installation
Must be located with access to an adequate drain or
condensate pump.
Condensate drain lines installed and piped to an adequate
drain or condensate pump.
Earth
3.4.4 Electrical Connections
Fig.3-13
The water heater requires 230 VAC for proper operation.
Wiring size and connections comply with all local applicable
codes and the requirements of this manual.
Water heater and electrical supply are properly grounded.
Proper overload fuse or circuit breaker protection installed.
3.4.5 Post Installation Review
Understand how to use the User Interface Module to set the
various parameters and functions.
Understand the importance of routine inspection/maintenance
of the condensate drain pan and lines. This is to help
prevent any possible drain line blockage resulting in the
condensate drain pan overflowing.
12
be above -15ºC and