Setting Of The Cascade Parameters; Cascade - Managing Water Heater - Lochinvar EFW 85 Installation, Commissioning, User And Maintenance Instructions

17.3.2 S
ETTING OF THE CASCADE PARAMETERS
1.Enter the main menu by pushing the menu button
now select settings by toggling the up and down
arrow and enter settings by pushing the enter but-
ton.
Menu
Central Heating
Domestic Hot Water (DHW)
Information
Settings
Module Cascade Settings
3. Select the
NOT Boiler Cascade Settings
Boiler Settings
Boiler Parameters
Module Cascade Settings
Boiler Cascade Settings
Heater address Heater Operation
Stand-alone Not possible
Master (default) 1 st boiler (managing)
2 2 nd boiler (depending)
3 3 rd boiler (depending)
4
4 boiler (depending)
th
16 16 th boiler (depending)
Select never "Stand alone" with a water heater. The water heater will not function right. A single water heater
must be configured to Managing.
5. Now select in parameter 147 of the managing water heater how many water heaters (units) are in the cascade
Module Cascade Settings
(144) Hyst Down Quick Start
(145) Hyst. Up Quick Stop
(146) Hyst Up Stop All
(147) Number of Units
17.3.3 C
ASCADE
When a water heater is set as Managing (Address = 1), the controller of this water heater will control the cas-
cade. The DHW mode of this managing water heater applies to all other water heaters. Therefore, in the installer
DHW menu of the managing water heater control the DHW_Mode should be set.
Available DHW mode in cascade is mode 1 only.
The system sensor (T_System) connected to the managing water heater will be the control sensor for the cascade
supply temperature.
104
The bus power is provided by the managing water heater on terminals 20-21,
switch S1 must be set in the OFF position (all controls).
and
Function of sensor
input terminal 3-4
No function
System sensor
No function
No function
No function
No function
10 °C
6.0 °C
8.0 °C
2
– M
ANAGING WATER HEATER
2. Now select Boiler Settings and enter the right
password to continue.
Settings
General Settings
Boiler Settings
4. Change burner address into Managing or Depend-
ing with the correct sequence number.
( Dep. 2 is the first depending boiler e.g.)
Module Cascade Settings
(184) Burner Address
(72) Permit Emergency Mode
(74) Emergency Setpoint
(75) Delay Per Start Next Mod.
E93.1804.014
i
Managing
Yes
65°C
200 sec