Checks; Water Pipe Fittings Hybrid Module - Ariston NIMBUS EXTERNAL UNIT 04 kW Technical Instructions For Installation And Maintenance

CHECKS

Before making the water circuit connections, check that:
• the system has been cleaned
• there are no impurities in the circuit water
• compatible components are used (do not connect copper and steel to each other)
• the system has been hooked up via the water circuit
• the water is never harder than 20°F or softer than 12°F, and that its pH is 6.6 to 8.5. If this is not the case, install water treatment to prevent
incrustations and corrosion in the system.
• the water circuit pressure never exceeds 5 bar, otherwise install a pressure reducer at the system's intake
• an anti-freeze kit is installed, if the system is being used in an area prone to freezing temperatures
• the boiler expansion vessel is large enough to handle the water in the system
WATER PIPE FITTINGS
HYBRID MODULE
• Connect the external unit to the HYBRID MODULE at point F and G shown in the fi gure. Pay attention to the insertion direction.
• Connect the heating/cooling system to the HYBRID MODULE 1 Zone at points A and E shown in the fi gure.
• Connect the system fi lling pipes.
• Connect the external unit drain valves to the rubber pipes, making sure not to damage the temperature sensors.
• Connect an anti-freeze kit (optional) in order to preserve the integrity of the external unit in the event of electric shock due to any cause (e.g.
frost)
• Insert a fi lter at the external unit input.
A B C D E
Flexible pipes kit (optional)
HYBRID MODULE
.
A Hot water delivery to system G ¾" M
B. Domestic hot water delivery G ½" M
C. GAS inlet G ¾" M
D. Cold water inlet G ½" M
E. System cold water return G ¾" M
.
F Hot/cold water delivery from external unit G ¾" M
F G
G. Cold water return to external unit G ¾" M
Valves kit (optional)
Drain 3-bar safety valve
Filter
Anti-freeze kit
IN
O U T
Condensate drain
(optional)
/ 55
Anti-vibration
kit
(optional)