GB.PREHEAT.130225
Specifications are subject to change without notice.
www.swegon.com 1
Function Guide for the GOLD,
Preheating
1. General
When it is cold outside and the humidity is high, preheat-
ing the incoming outdoor air will prevent condensation
from forming on outdoor air filter surfaces in the air han-
dling unit.
Preheating the air also reduces the risk of frosting in the
heat exchanger.
Preheating the outdoor air may also be required during
periods of extremely low temperatures outside. If the air is
preheated to -20°C, for instance, this prevents the pres-
sure sensor and the frequency inverter from having to
operate under excessively low ambient temperature condi-
tions.
The preheating function
can control the air heater as fol-
lows:
– Electric air heater, pause/pulse control signal.
– Electric air heater, 0–10 V.
– Air heater for hot water, 0-10 V control signal, with anti-
frost monitor/heat retaining function.
– Air heater for hot water, 0-10 V control signal, without
anti-frost monitor/heat retaining function.
Type TBLF air heaters for preheating are designed for
installation in an outdoor air duct, however they can also
be installed in an exhaust air or extract air duct.
Preheating
is interlocked to follow the supply air flow. This
means that the function cannot be used in the exhaust air
or extract air duct while the supply air fan is switched off
and the extract air fan alone is operating.
The preheating function
has a relay function for control-
ling a circulation pump, if required.
2. Material Specification
Air handling unit
All types of GOLD
Option 1
Air heater, water, for preheating
TBLF-1-aaa-aaa
The TBLZ-1-53-1 Control of air heater for preheating is
included.
or
Air heater, water,
for preheating (not size 50-120)
TCLF-1-aa
The TBLZ-1-53-1 Control of air heater for preheating is
included.
Option 2
Electric air heater, type Swegon standard,
for preheating (not size 50-120)
TBLE
Control of air heater for preheating.
TBLZ-1-53-0
Consists of: IQnomic Plus, TBIQ-2-1
Temperature sensor (set) for duct mounting,
TBLZ-1-30.
Communication cable, BC1-1 (L = 250 mm).
Without anti-frost monitor sensor
Jack, modular/terminal block
TBLZ-1-55
Option 3
Air heater of other type than TBLF/TCLF or TBLE.
Control of air heater for preheating.
TBLZ-1-53-a
Consists of: IQnomic Plus, TBIQ-2-1
Temperature sensor (set) for duct mounting,
TBLZ-1-30.
Communication cable, BC1-1 (L = 250 mm).
Code:
a = 0
without anti-frost monitor sensor
a = 1
with anti-frost monitor sensor
