J&E Hall JEHSD-0400-B3-M-3, Technical Manual

Page: 26 / 44

Issue: 01.08.2020
Commissioning
AC Fan Speed Modulation Controller
•
Recommended settings to gain higher energy efficiency as published in the Ecodesign data sheets are as follows:
Refrigerant
Condenser fan (Fdc28)
Fan setpoint limit (Fdc16)
Setpoint (B01)
Regulation (Fdc11)
Go to Fdc16, to change fan setpoint limit, mini
Manual Bypass Operation
In the event of failure of the main electronic controller, the unit can be run
bypass mode. By changing the position of the manual bypass switch mounted on the electrical box from ‘0’
to ‘1’, the compressor will run at 100% capacity
the condenser fan will run without fan speed control.
Note:
Please ensure the bypass switch is always at “0” position while running in electronic controller mode!
AC Fan Speed Modulation Controller (cont’d)
Recommended settings to gain higher energy efficiency as published in the Ecodesign data sheets are as follows:
R407A/ R407F/ R448A/R449A
Condenser fan (Fdc28) Cut off enable: No
Fan setpoint limit (Fdc16) Minimum: 8.0barg Maximum: 28.0barg
Fan setpoint: 13.5 barg
Differential: 5.5 barg Dead band: 0.0barg
Go to Fdc16, to change fan setpoint limit, minimum to 8.0barg, then go to Fdc11, Fdc28 & B01 to change as table above.
In the event of failure of the main electronic controller, the unit can be run
temporarily
bypass mode. By changing the position of the manual bypass switch mounted on the electrical box from ‘0’
to ‘1’, the compressor will run at 100% capacity – controlled by the adjustable LP switch. In bypass mode,
ithout fan speed control.
Please ensure the bypass switch is always at “0” position while running in electronic controller mode!
Page 26
Recommended settings to gain higher energy efficiency as published in the Ecodesign data sheets are as follows:
Minimum: 8.0barg Maximum: 28.0barg
B01 to change as table above.
temporarily
in mechanical
bypass mode. By changing the position of the manual bypass switch mounted on the electrical box from ‘0’
controlled by the adjustable LP switch. In bypass mode,
Please ensure the bypass switch is always at “0” position while running in electronic controller mode!