W415-1013 / C / 11.19.13
18
EN
REQUIRED COMPONENTS:
• HMF150/200 Hybrid Furnace
•
HMFK-ADDON
Kit
• HMFK-SOLID or HMFK-GLASS Door Kit
CAUTION
1. Certi
fi
ed for series connection to the supply plenum outlet only (upstream) of an oil-
fi
red furnace or gas
fi
red
furnace, or electric furnace;
2. May be added onto one of the following:
• a
gas/oil
fi
red furnace having an output, as shown on the original nameplate, between 60,000
minimum and 85,000 maximum BTU/h (HMF150), up to 100,000 BTU/h (HMF200)
•
an electric furnace having a rating as shown on the original nameplate, between 15 minimum and 20
maximum Kw (HMF150), up to 30 Kw (HMF200)
3. Do not connect duct work so that a reverse
fl
ow is possible
4. Operate the original furnace (oil, gas, electric) unit periodically to ensure that it will operate satisfactorily
when needed;
5. Do not relocate, bypass or render inoperable any of the safety controls in the original furnace installation;
6. Maintain suf
fi
cient combustion-air supply to both furnaces. Air starvation is dangerous, see Section 3.2
"Outside Combustion Air";
7. Refer to manufacturer's instruction of existing furnace.
8. Do not use duct elbows having an inside radius of less than 6” inches (150mm).
9. An add-on unit shall only be installed on a furnace duct system and chimney that are in good operating
condition.
10. a) The differential static pressure between the inside and outside of the warm air supply plenum, or the
air-temperature rise at equilibrium across the original furnace is to be measured before any changes are
made to the system. Using the following methods the differential of pressure and temperature should be
adjusted to the same values after the add-on installation (meeting original manufacturer speci
fi
cations)
in order to maintain the air
fl
ow through the original furnace.
•
on a belt-driven system, blower pulleys and motor pulleys may be changed but the electrical current
fl
owing through the motor shall not exceed the nameplate rating (a blower motor of larger power
may be used);
•
on a direct-drive system, the motor shall not be changed; however, the speed of the motor may be
increased;
•
the blower itself shall not be changed;
5.1 HYBRID HMF150/200 AS A "ADD ON" TO EXISTING FURNACE
H3.38A
THE INSTALLATION OF THE FURNACE MUST BE DONE IN ACCORDANCE WITH RULES OF
AUTHORITIES HAVING JURISDICTION AND THE CAN / CSA B365-01 (R2006) STANDARD FOR SOLID
FUEL BURNING APPLIANCES AND EQUIPMENT.
THE HMF/CHMF 150/200 WOOD FURNACES ARE NOT INTENDED FOR USE AS AN “ADD ON”
FURNACE TO A HEAT PUMP SYSTEM. CONNECTION OF THIS CONFIGURATION WILL VOID ALL
WARRANTIES.
