6
34000 Autry Street, Livonia, MI 48150 | 800.968.5530 | Fax 734.419.0209 | www.hamiltonengineering.com | LIT91110 REV 06/2018
CONFIGURATION #2
Configuration #2 – CASCADE WATER HEATERS
• In this configuration, an external sensor on terminals 1 & 2 (or 3 & 4, 28 & 29 depending on model) or an
aquastat on terminals 5 & 6 (or 13 & 14, 57 & 58 depending on model)
MUST
be connected to the
LEAD
HEATER ONLY
.
In this configuration the following can be done on the
LEAD HEATER ONLY:
1. Adjust the heater minimum and maximum temperature setting via the red wheel located on the display
panel, within the range of 50 – 159°F
(Parameter 2 EA, 2 EB)
It is important to set the red potentiometer wheel to the desired setpoint on the Lag heaters with the power off to
the Lead heater. This way, in the event of a control or power failure to the Lead heater, the Lag heaters will
operate at the desired temperature.
Adjust offset, Hysterese (droop) and modulation range in Parameters 2IF – 2IM and 2CD – 2CF.
CDM
4/11/06
1/2"=1'
Dwg. By:
34000 Autry
Livonia, MI 48150
PH: (800) 968-5530
Fax: (734) 419-0209
Description:
Date:
Scale:
Customer:
HAMILTON
ENGINEERING
Dwg.
No.:
Checked.
By:
Cascading Water Heater
With External Tank Sensor
Pump 3
Storage
Tank
Pump 3
Pump 3
Lead
Lag 1
Lag 2
Required parameter changes
from base program
Default
Change to
Base Program - DXXXLCO.pia
All Lag Heaters - 2CA
5
2
All Lag Heaters - 2IA
0
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