Titus Lynergy User Manual

Titus Proportional Lynergy

W/ Discharge Temperature Limit

Start-Up, Operation and Service Instructions

SAFETY NOTE

Air-handling equipment will provide safe and reliable service when operated within design specifications. The equipment
should be operated and serviced only by authorized personnel who have a thorough knowledge of system operation, safety
devices, and emergency procedures. Good judgment should be used in applying any manufacturer’s instructions to avoid injury
to personnel or damage to equipment and property.

WARNING
power is not disconnected. Electrical shock and personal injury could result.

WARNING
control box and/or heat sinks may be hot.

LineaHeat is an electronic, time proportional electric heat system. The heat output of the heater is modulated utilizing quiet,
rapid performing solid state relays. The relays are switched off and on to allow the heating of electrical resistance elements.
The proportion of time the relay is on dictates the proportion of maximum heat the electric heater can produce. The solid state
relays are switched off and on by a supplied Electric Heat Module (EHM). The EHM accepts an input signal from the terminal
unit controller or thermostat for the amount of heat desired. The EHM can accept a variety of different input signals when
interfacing with controls. The type of input the EHM will accept is modified by changing the position of one or two jumpers
easily accessible on the board.

The LineaHeat is available with an optional discharge temperature sensor. When used with the discharge sensor option, the
LineaHeat will modulate outgoing temperature from the unit between the maximum temperature setting and initial temperature
of incoming air before heating began. The discharge temperature set point is easily adjusted in the field by rotating the
temperature dial on the EHM. The EHM will not allow temperatures over the set point so as to prevent overheating,
stratification, and energy waste from heated air lost through overhead returns.

INPUT SETTING. The LineaHeat board is capable of being controlled and operated 7 different ways. The units are ordered
with an LXY code, where “X” is coded for unit power and “Y” is coded for the application. This “Y” application can be
changed in the field. The application desired is chosen by placement of jumpers in the corner of board (See Drawing 1 on page

2). Jumper settings below are representative of pins at bottom left of control board as shown in drawing. Wiring diagrams for
each are on pages 5 & 6.

: Disconnect all power to the unit before performing maintenance or service. Unit may automatically start if

: Units with LineaHeat use Solid State relays, which generate heat when used. The temperature of the

OVERVIEW

START-UP

LX1) On/Off: This application accepts one 24 Vac input at “Inc” to step the heater output from

OFF to 100% heater kW rating. The signal may be pulsed off and on over a small time
period to provide proportional heat. For example, a signal that is on for 4.5 seconds every
10 seconds would produce 45% of the heater’s kW rating.

LX2) 2 Stage (2Stg): This two stage application accepts two 24 Vac inputs to step the heater

LX3) 0-10V: This application accepts a 0-10 Vdc (0-20mA) signal to modulate the heater

output from off to 50% or 100% heater kW rating. A signal to “Inc” is 50% and a signal
to “Dec” is 100%

output. The output is proportional to input signal (i.e., 4.5 volts sets the heater to 45% of
kW rating).

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LX4) 2-10V: This application accepts a 2-10 Vdc (4-20 mA) signal to modulate the heater

output. The output is proportional to input voltage above 2 volts (i.e., 4.5 volts sets the
heater to 25% of kW rating).

LX5) Incremental (Incr): This application accepts one 24 Vac input to modulate heater output.

An increase signal will increase the heater output from 0% to 100% over a 4 minute 15
second interval, staying at 100% afterward. When the signal is removed, the heater output
will decrease to 0% over the same time period. This application mirrors a Normally
Closed hot water valve.

LX6) Bininary (Bin): This application accepts two 24 Vac inputs to step the heater from off to

33%, 67%, or 100% of the heater’s kW rating. A signal to “Inc” is 33%, a signal to “Dec”
is 67%, and a signal to both is 100%.

LX7) 3 Point Floating (Float)

: This floating input application accepts two 24 Vac inputs to
increase or decrease the heater output. As the increase signal is sent, the heater output will
increase from 0% to 100% over a 2 minute 15 second interval. If the increase signal is
removed, or decrease signal is also added, the heater output will stay constant at present
point. When only the decrease signal is received, the heater output will decline from the
present level to 0% over the same time period. This application mirrors a Three-Point
floating hot water valve.

WIRING. The EHM control board is powered by 24Vac (1) from the transformer in the electric heater. The EHM has
auxiliary 24Vac outputs (2) that can be used to power the unit’s electrical controls. Next to the “Xfmr” inputs are the “+” and
“-“ Relay connections (3) that control the solid state relays by sending pulses of ~25Vdc.

There are two terminations to use for dc Volt control (4) of the electric heat (applications LX3 and LX4 from above). These
are polar sensitive. The “+” signal from the controller must be connected to “Signal” on the EHM Control Board. The “-“
from the controller must be connected to “Com” next to “Signal (Note: NOT “iCom”). A termination to “-“ is possible, but not
necessary to measure mA signals to the board.

There are three terminations for 24 Vac control (5) of the electric heat (applications LX1, LX2, LX5, LX6, and LX7 from
above). “Inc” is for the increase signal in applications LX5 and LX7, as well as the first stage heat signal in applications LX1,
LX2, and LX6. “Dec” is for the decrease signal in application LX7, as well as the second stage heat signal in applications LX2
and LX6. A connection to “iCom” is necessary for all of these 24 Vac applications. If the unit’s controller does not have a
Common output, a jumper to the correct “Aux” terminal can be used. If the unit controller outputs the “24Vac” side from it’s
input power, a jumper should be made from “Neutral” to “iCom” (See sample diagram on page 7). If the unit controller
outputs the “Neutral” side of it’s input power, a jumper should be made from “24Vac” to “iCom”.

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DISCHARGE TEMPERATURE SET POINT. LineaHeat comes with a discharge temperature set point (DTS) option. This
option allows a maximum temperature to be set at the board to prevent overheating of discharge air. When the unit receives a
signal to start heating, the board will take an initial temperature reading and modulate heat from that point to the maximum
temperature. For example, if a thermostat requires only a 10% heating output of air that was initially 60°F and has a maximum
temperature setting of 90°F, the EHM will modulate the heater’s output temperature to 63°F (the additional 3 degrees coming
from (90-60)*10%). This allows heaters to be sized for morning warm up in the winter and still comfortably operate on those
days when the inlet temperatures are slightly warmer.

The discharge temperature sensor comes with a 9’ cable for mounting in the downstream ductwork. The sensor should be
mounted a minimum of 36” from the discharge of the unit and be vertically centered in the ductwork. The sensor can be
mounted by drilling a 1/2” hole into the ductwork, inserting the sensor, and securing it with 2 sheet metal screws. The sensor is
6” long, and the tip should not touch any part of the ductwork.

Neither the jumper settings nor the controls wiring needs to be changed when this option is ordered. The EHM control board
will detect if a sensor has been connected, and it will adjust the control function accordingly. The sensor wires are connected
to the screw terminals at the “Sensor” (6) location on the EHM. The connection at this termination is not polar sensitive and
the two wires may be switched with no effect.

The desired discharge temperature is set by rotating the discharge temperature set point dial arrow to the maximum outlet
temperature desired. To fine tune the discharge temperature set point, connect the positive and negative leads of a multimeter
to “Tcal” and “Com” (7), respectively, on the EHM. Then place a jumper between the two screw heads on the sensor
termination. Rotate the discharge temperature set point dial until the desired voltage per temperature is obtained. After the
voltage is obtained, the EHM board must be reset. To reset the board, remove the jumpers and then place back in correct
position.

TEMP dc VOLT TEMP dc VOLT TEMP dc VOLT TEMP dc VOLT TEMP dc VOLT

68 0.00 80 0.58 90 0.95 100 1.23 110 1.44
69 0.05 81 0.62 91 0.98 101 1.25 111 1.46
70 0.10 82 0.66 92 1.01 102 1.27 112 1.48
71 0.15 83 0.70 93 1.04 103 1.30 113 1.50
72 0.20 84 0.74 94 1.07 104 1.32 114 1.51
73 0.26 85 0.77 95 1.10 105 1.34 115 1.53
74 0.30 86 0.81 96 1.12 106 1.36 116 1.55
75 0.35 87 0.85 97 1.15 107 1.38 117 1.56
76 0.40 88 0.88 98 1.18 108 1.40 118 1.58
77 0.44 89 0.91 99 1.20 109 1.42 119 1.60
78 0.49 120 1.61
79 0.53

It should be noted that ASHRAE Fundamentals Handbook (Chapter 31) states that discharging air at a temperature more than
15°F above the room (90°F in a 75°F room) will likely result in significant unwanted air temperature stratification.

It is recommended that heater output is ramped or staged when switching from cooling to heating modes. On initial call for
maximum or near maximum heat, from cooling mode, the heater may overshoot the desired temperature by up to 20°F for 10
to 20 seconds (on oversized heaters). As the EHM begins modulating heater output, the discharge temperature will quickly
drop to the desired set point. Temperatures within ±2°F of desired set point are reached within 90 seconds with oversized
heaters.

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