CADDY PF01015, Installation And Operating Instructions Manual

Page: 14 / 96

14
9. SAFETY PRECAUTION
CAUTION
THE OPERATION OF A GAS FURNACE MUST BE VERIFIED FOR ACCEPTABLE OPERATION BEFORE
AND AFTER INSTALLATION OF THE CADDY ADD-ON APPLIANCE BY A GAS FITTER WHO IS
RECOGNIZED BY THE REGULATORY AUTHORITY.
CAUTION
DO NOT CONNECT TO ANY GAS FURNACE THAT HAS NOT BEEN CERTIFIED INITIALLY AS COMPLYING
WITH CGA STANDARD CAN/CGA-2.3 OR ITS PRECEDENTS.
10. INTRODUCTION
The wood burning Caddy Add-on furnace is approved for in-line connection to an existing oil furnace or any gas or
electric furnace with a maximum heating capacity of 120,000 BTU/h. (35.17 kW)
10.1. BLOWER OF THE EXISTING FURNACE
The theoretical air flow in the hot air plenum blower of the existing furnace must be at least 1,900 CFM when the
external static pressure is adjusted to 0,2" and to 0,5" of water column.
Some adjustment on the motor and blower of the existing furnace may be necessary. In this case, the following rules
apply:
•
On a belt-driven system, blower pulleys and motor pulleys may be changed to do the adjustment.
•
On a direct-drive system, the motor shall not be changed; however, the speed of the motor may be increased or
decreased.
CAUTION
THE BLOWER OF THE EXISTING FURNACE ITSELF SHALL NOT BE CHANGED.
WARNING
THE ELECTRICAL CURRENT FLOWING THROUGH THE BLOWER MOTOR SHALL NOT EXCEED THE NAME
PLATE RATING.
11. APPLIANCE INSTALLATION
If the exiting furnace must be modified, the following standards must be respected:
Wood-oil
•
NFPA 31: Standard for the installation of oil-burning equipment.
•
CSA B.139: Installation code for oil-burning equipment.
Wood-gas
•
National Fuel Gas Code, ANSI Z223.1/ NFPA 54.
•
CAN/CGA-B149.1 & CAN/CGA-B149.2 : Natural Gas & Propane Installation Code et Propane Storage & Handling
Code.
11.1. MATCHING THE TRANSFER DUCT BETWEEN THE TWO HEAT GENERATORS
This furnace is certified only for installation in configuration presented in
OPTION 1, 2, 3 and 4
of this section.
Configurations presented in
Examples 1 and 2
of this section are prohibited.
Install the plenum and heating ducts in line as in
OPTION 1
of this section. Series connection (
OPTION 2
) should be
considered ONLY if in line connection (
OPTION 1)
is not possible.
If the ducts are installed in series (
OPTION 2
) and the existing furnace’s fan limit control is mounted on the plenum, the
divider in the plenum must be installed at least 5" (127 mm) above the fan limit control. This divider must be air tight.