Thermann TH28ENR6L, Installer Manual

Page: 39 / 52

G
(1 1/4"-2")
Unit 6
Unit 2
System Controller
Storage tank supply lin
e
(1 1/4"-2")
Storage tank return lin
e
(Copper or Stainless Pipe) (Copper or Stainless Pipe)
Storage
Tank Circulation Pump
1
Storage
Tank Circulation Pump
2
(if Necessary)
Gas Pipe
Hot W
ater
Storage
Ta
nk
Relief
Va
lv
e
Hot water supply lin
e
(Copper or Stainless Pipe)
Return lin
e
circulation pump
Hot water return lin
e
(Copper or Stainless Pipe)
Cold
Wa
ter Supply Pipe
* Size the cold water supply piping to allow for maximum flow rates of the building. * Be sure to connect the cold water supply pipe between the hot water storage tank and intake side of the storage tank circulation pump.
Hot
Wa
te
r
Suppl
y
Remot
e
Controlle
r
When installing 2 pumps in parallel
Thermosta
t
Pump Control Wires (use external relays)
Unit
1
* Set “Y
es” for the question
“Start pump rotation?” in system settings. (See SC-401-6M Installation Manual
)
When installing 2 pumps in parallel
Set “Yes” for the question “Start pump rotation?” in system settings. (See SC-401-6M Installation Manual)
B-2. Example of Installation with a Storage Tank and Recirculation System (Tank recirculation system)
The pump will push water through the Multi-System to heat up the tank.
When the temperature of the thermostat is high, the system controller will turn off the pump until
the temperature cools down.
*
For the set temperatur
e of the r
emote contr
oller
, use the temperatur
e (of the thermostat) + about 5 °C.
*
To achieve the highest r
ecovery
, size the storage tank cir
culation pump for maximum capacity
.
(TH50ECR6 : 30 L/min (each), TH32ECR6 : 18 L/min (each), TH28ENR6 : 18 L/min (each) @ 20 m of head +
piping losses thr
ough the system.)
Only TH50ECR6 series and TH32ECR6 series.
* The remote controller
terminal location may differ
depending on the unit.
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