Caddy T-30 Installation Manual
Installation
instructions
for
Plenum-mounted
add-on
electric heaters
Aug. 2008
Version 4
THESE INSTALLATION INSTRUCTIONS COVER:
Please refer to CSA Standard B139, installation code for oil burning equipment and to the Canadian Electrical Code,
MODEL
T-4 to T-30
(4 Kw to 30 Kw)
GENERAL NOTES
Part 1, for recommended installation practices.
- The installation of this unit should be in accordance with the regulations of the authorities having jurisdiction.
CAUTIONS
1. Before installation, ensure that the local electrical inspection authority will accept connection of this equipment
to the existing panel.
2. This equipment may only be installed and tested by qualified personnel.
3. The electrical power supply should be checked for adequacy for the proposed additional load.
4. Ensure that the heat output capacity of the installed electrical Add-on Heaters does not exceed the rated output
capacity of the furnace burner.
5. This heater is for use with an in-line (hi-boy) or up-flow (lo-boy) oil or gas fired furnace.
OPERATING INSTRUCTIONS
The controls provided with this unit prevent simultaneous operation of the add-on heater and the oil burner. In the case
of malfunction, shut down the equipment and call a qualified electrician.
Page 1
FIELD TESTS:
Run burner to ensure that the blower starts soon enough to prevent the manually resettable temperature limiting
A. BEFORE Installation of the Add-on Heater:
1. Ensure that the burner does not cycle due to repeated operation of the furnaces high limit control.
2. Determine whether stabilized outlet air temperature during burner operation is below 66°C (150°F) in the main
outlet duct. If it does exceed 66°C (150°F) make the following adjustments to the Ventilation System in
progressive steps:
Note: In most cases, only steps A & B will be necessary.
a) Check if filters are clogged.
b) Check if fan blades are clean. If not, remove the blower from its compartment and clean with a brush.
c) Adjust the motor pulley to increase its diameter.
d) Change the fan pulley for a smaller size.
e) Change the motor pulley for a larger size.
f) Change the motor and make sure that the fan control and wiring are adequate.
Note: If steps c), d) & e) are necessary, make sure that the existing motor is adequate. The current drawn must not
exceed the nameplate specifications.
Important: The blower must not be changed. If the system cannot provide sufficient airflow after changing the motor,
do not install the add-on heater in that furnace.
B. AFTER installation of the Add-on Heater:
1. Ensure that the burner does not cycle due to repeating operation of the furnace's high limit control.
2. Ensure that stabilized outlet air temperature during burner operation does not exceed 72°C (160°F) in the main
outlet duct.
3.
control on the Add-on Heater from tripping.
4. Operate the Add-on Heater to ensure satisfactory operation without overheating.
Note: Where a cooling coil is present, additional checks should be made to ensure adequate airflow exists for cooling
system operation.
Page 2
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