Mixing valve assembly installation ver. 1
Pos.
Item
KV
Cold water to the DHW tank
VV
Hot water from the DHW tank to the valve
BV
Domestic hot water from the valve to the
DHW system
DHW tank connections
The domestic hot water tank has 22 mm stainless steel fittings for the valve assembly.
The valve assembly has 22 mm brass compression fittings.
1. Lubricate the inner surface of each ferrule before installation.
2. Mount the valve assembly into position.
3. Tighten the fittings with your fingers until they are as tight as you can get them, then
tighten another 3/4 of a turn with a wrench.
Pipe connections for the safety valve and the fill valve
These valves in the valve assembly have 15 mm brass compression fittings. Lubricate
the inner surface of each ferrule before installation.
1. Mount the valve assembly into position.
2. Tighten the fittings with your fingers until they are as tight as you can get them, then
tighten with a wrench.
Tighten copper pipe joints 1 1/4 turns and steel pipe joints 3/4 of a turn. Use pipe
support sleeves in soft and half-hard copper pipes. Tighten plastic pipes using pipe
support sleeves as indicated in the manufacturer’s instructions. As a general rule,
plastic pipes should be tightened 1 1/4 turns.
Thermostatic mixing valve LK 545 for domestic hot water
Domestic hot water temperature can be adjusted b38 and +65 °C. Increase
the temperature by turning the knob counterclockwise (+). In most cases, it is advisable
to set the valve to its highest temperature setting; this way, the valve will limit water
temperature only when it e65 °C.
Domestic cold water inlet, shut-off and non-return valve LK 508
In normal operation, the valve is fully open (knob turned all the way counterclockwise).
In addition to the shut-off valve, the valve unit includes a non-return valve that prevents
water from the DHW tank from flowing into the domestic cold water system (the
domestic cold water supply pipe is connected to the bottom of the tank).
The valve includes a free (plugged) port for installing an anti-siphon valve.
M8006 2123EN
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