Accessories
CONTROL CIRCUIT STEP-DOWN TRANSFORMER (Required)
The internal controls and motors of all ThermElect Hydronic systems operate at 208V or 240V (two wire).
A transformer must be installed per the manufacturer’s installation instructions to supply this voltage to
the system’s controls. This transformer can be purchased from Steffes or sourced from a local electrical
supply company. See the matrix below for proper sizing, load as dictated by the furnace’s set-up. When
using BACnet control, the furnace can be commanded to varying input levels remotely.
Model
Primary Voltage
Secondary Voltage
KVA
Hevi Duty Item #
Steffes Item #
277/480V
480
240
1
HS1F1BS or equal
1017085
347/600V
600
240
1
HS10F1BS or equal
1017084
LIFTING HANDLES (optional)
Lifting handles (Order Item #1302120) are available to aid in moving the
ThermElect Hydronic system into its final location.
EXTERNAL DUCT SENSOR (optional)
The external duct sensor (Order Item #1041536) provides the
ability to monitor the duct temperature at an area beyond
fresh air makeup and/or beyond other devices and regulate the
discharge air temperature accordingly.
The duct sensor feature is enabled if the 4 bit is set in Location
53 (L053). Once enabled, the ThermElect Hydronic system
monitors temperature at both the duct sensor and the output
sensor during Y, W, or E calls from the thermostat.
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SENSOR
AIR HANDLER
9100 SERIES
THERMELECT
WATER
COIL
Page 1 of 1
Document Name: 1200155 Rev 1
07/21/08
Figure 1A
Figure 1B
STEFFES CORPORATION
LIFTING HANDLE INSTRUCTIONS
For use with 8100 and 9100 Series ThermElect Systems
Item #1302120
THIS PROCEDURE MUST BE PERFORMED BY A QUALIFIED TECHNICIAN.
1. Remove the front and rear painted panels.
2. Remove screws and wing nuts joining the lifting
handles together to separate the two pieces.
3. Insert the top part of the lifting handle into the
element holes making sure the hook faces up as
shown in Figure 1A.
Install the lifting handles at a height
suitable for the people lifting the device.
Make sure to maintain unit balance as
the unit may be top heavy.
4. Insert the bottom part of the lifting handle two
element holes below the top lifting handle section.
The bottom part of the lifting handle must be
installed with the hook facing down as
shown in Figure 1B.
5. Align the top and bottom parts of the lifting
handle so the holes match-up. Use the
screws and wing nuts removed in Step 2 to
join the two pieces (Figure 2). Hand-tighten
the wing nuts so they are snug.
6. Insert the extension bar into the lifting
handle. The bar can be extended to
accommodate more people for lifting as
shown in Figure 3.
7. Insert stabilizing pins to keep extension bar from moving as shown in Figure 4.
Figure 2
Figure 3
Figure 4
HEAVY OBJECT
Can cause muscle strain or
back injury.
Use assistance to lift or move
this equipment.
Use lifting aids and proper
lifting techniques when lifting
or moving this equipment.
Keep all body parts and other
objects clear of the system
when lifting or moving.
WARNING
LIFTING
HANDLES
Page 1 of 1
Document Name: 1200155 Rev 1
07/21/08
Figure 1A
Figure 1B
STEFFES CORPORATION
LIFTING HANDLE INSTRUCTIONS
For use with 8100 and 9100 Series ThermElect Systems
Item #1302120
THIS PROCEDURE MUST BE PERFORMED BY A QUALIFIED TECHNICIAN.
1. Remove the front and rear painted panels.
2. Remove screws and wing nuts joining the lifting
handles together to separate the two pieces.
3. Insert the top part of the lifting handle into the
element holes making sure the hook faces up as
shown in Figure 1A.
Install the lifting handles at a height
suitable for the people lifting the device.
Make sure to maintain unit balance as
the unit may be top heavy.
4. Insert the bottom part of the lifting handle two
element holes below the top lifting handle section.
The bottom part of the lifting handle must be
installed with the hook facing down as
shown in Figure 1B.
5. Align the top and bottom parts of the lifting
handle so the holes match-up. Use the
screws and wing nuts removed in Step 2 to
join the two pieces (Figure 2). Hand-tighten
the wing nuts so they are snug.
6. Insert the extension bar into the lifting
handle. The bar can be extended to
accommodate more people for lifting as
shown in Figure 3.
7. Insert stabilizing pins to keep extension bar from moving as shown in Figure 4.
Figure 2
Figure 3
Figure 4
HEAVY OBJECT
Can cause muscle strain or
back injury.
Use assistance to lift or move
this equipment.
Use lifting aids and proper
lifting techniques when lifting
or moving this equipment.
Keep all body parts and other
objects clear of the system
when lifting or moving.
WARNING
