tekmar 440 User Manual
- Data Brochure
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Mixing Expansion Module 440
D 440
06/05
1
Information
Brochure
Choose controls
to match
application
2
Application
Brochure
Design your
mechanical
applications
3
Rough-in
Rough-in
instructions
Wiring
wiring
4
Wiring
Brochure
Wiring and
installation of
specific control
5
Data
Brochure
Control settings
and sequence of
operation
6
Job
Record
Record settings &
wiring details for
future reference
Introduction
The Mixing Expansion Module 440 provides a system pump output and a single mixing output for either a variable speed
injection pump or floating action mixing valve. The 440 cannot operate by itself and requires the use of a tN4 System
Control that is capable of operating a Mixing Expansion Module.
Features:
• tN4 Compatible
• Powered Variable Speed Output
• Powered 24 V (ac) Floating Action Output
• Powered System Pump
• CSA C US Certified for use in USA
and Canada
Floating Output:
24 V (ac) 8 VA
Variable / Floating
Meets Class B: Canadian
ICES & FCC Part 15
Made in Canada
Var. Pump Fuse
T2.5 A 250 V
C Com Mix
Opn53Cls
51 52 54 55
Powered Output
2.5 A
56 57 58 59
Variable Speed System
Pump Pump
RR
NN
No power
Mixing Expansion Module 440
Power
System Pump
Mix % Out
Open
Close
tN4
tektra 1000-02
Var. Pump: 115 V (ac) 2.5 A
Relay Rating: 115 V (ac) 5 A
7.5 A (max)
H7009B
1 of 4 © 2005 D 440 - 06/05
Sequence of Operation
Variable / Floating
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The tN4 System Control determines the required mix
supply water temperature based on its settings and the
requirements of the tN4 thermostats connected to the same
tN4 bus as the 440.
The 440 operates either a variable speed injection pump
or a floating action mixing valve to maintain the required
water temperature at its Mix Supply sensor.
Variable Speed Injection
A standard wet rotor circulator can be connected to the
Variable Speed output on the control. The control increases
or decreases the power output to the circulator when there
is a requirement for mixing. The circulator speed varies to
maintain the correct mixed supply water temperature at
the mix supply sensor. For correct sizing and piping of the
variable speed injection circulator, refer to essay E 021.
A visual indication of the current variable speed output is
displayed by the Mix % Out LED.
Floating Action
A floating action actuator motor can be connected to the
control on the Opn and Cls terminals. The control pulses
the actuator motor open or close to maintain the correct
supply water temperature at the mix supply sensor when
there is a requirement for mixing. The mixing valve that the
actuator is connected to can be either a 2-way, 3-way or
4-way valve. A visual indication as to whether the control is
currently opening or closing the mixing valve is displayed
by the Open and Close LEDs.
System Pump Operation
The System Pump contact operates based on the settings
of the tN4 thermostats connected to the same tN4 bus
as the 440.
DIP Switch Settings
C Com Mix
Opn53Cls
Floating Output:
RR
24 V (ac) 8 VA
51 52 54 55
No power
Powered Output
Mixing Expansion Module 440
Power
2.5 A
56 57 58 59
Variable Speed System
NN
Pump Pump
System Pump
Mix % Out
Open
Close
Variable / Floating
Meets Class B: Canadian
ICES & FCC Part 15
Made in Canada
Var. Pump Fuse
T2.5 A 250 V
The DIP switches are found on the left hand side of the 440.
© 2005 D 440 - 06/05 2 of 4
tN4
tektra 1000-02
Var. Pump: 115 V (ac) 2.5 A
Relay Rating: 115 V (ac) 5 A
7.5 A (max)
H7009B
Variable
• The 440 uses the Variable Speed output to control a
variable speed injection pump.
Floating
• The 440 uses the Floating Action output to control a
24 V (ac) floating action actuator.
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