ECR International HML-C, Инструкция по установке, эксплуатации и обслуживанию

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regulator. The flue outlet pressure (measured between
the furnace and draft regulator, or the oil burner
mounting plate over-fired draft access port. fig. 2) should
be set to -0.02 in. w.c.
8. OPTIONAL SIDE WALL VENTING
Certain HML-C and HMLV-C furnace models are
manufactured to be installed as sidewall vented units.
Please refer to Direct Venting Instructions, P/N
240006979 included with the Vent Kit for details. Sidewall
Venting (
Direct Venting
) requires the use of specific oil
burners; the Beckett AFII, or the Riello 40BF. Please
refer to Appendix A, Tables A2, and A4.
Note: Sidewall venting requires special attention to
combustion air supply. There is no natural draft in the
venting system between furnace cycles; therefore, if the
indoor pressure is negative relative to the outdoors, the
vent terminal becomes a point of infiltration. This could
lead to oil odour control problems. This problem is
rectified by the use of ducted outdoor air for combustion
(semi-sealed combustion), using the Beckett AFII or
Riello 40BF oil burner. See Direct Vent Instructions
supplied with the Vent Kits.
9a. FAN TIMER BOARD AND LIMIT CONTROL
(FIG. 4) (page 22)
The Electronic Fan Timer integrates control of all burner
and circulator fan operations. This control is the central
wiring point for most of the electrical components in the
furnace. The
United Technologies 1158-120 (HML-C)
has an adjustable fan on time that is set by selecting the
dipswitch combination displayed in Chart 1. This fan on
delay can be set at 1, 2, 4 or 6 minutes. This provides a
delay between the burner ignition and blower start-up to
eliminate excessive flow of cold air when the blower
comes on. The
United Technologies 1158-120 (HML-
C)
has an adjustable fan off time of 30, 60, 90 or 120
seconds displayed in Chart 1. The fan off delay time
starts when the burner motor is de-energized at the end
of a call for heat. Blower shutdown is delayed to remove
any residual heat from the heat exchanger and improve
the annual efficiency of the furnace.
The electronic fan timer board works in conjunction with
snap disc limit controls, which perform a safety function,
and breaks power to the oil burner primary control, which
shuts off the burner if the furnace over-heats. The limit
control is thermally operated and automatically resets.
The limit control is factory installed, pre-set and is not
adjustable.
If the limit control opens with the
United Technologies
1158-120 (HML-C)
electronic fan control
,
the circulating
fan will be energized as well. When the limit closes, the
fan off timer will begin. At the end of the fan off time cycle
the burner will be energized, initiating a normal burner
cycle.
CHART 1
United Technologies 1158-120 (HML-C)
Dip Switch Position Blower Delay Times
1 2 3 4 On
Seconds
Off
Minutes
Off Off 30
On Off 60
Off On 90
On On 120
Off Off 1
On Off 2
Off On 4
On On 6
9b. FAN TIMER BOARD AND LIMIT
CONTROL (FIG. 5) (page 22)
The
United Technologies 1168-1 ECM (HMLV-C)
tap board has an adjustable fan on/off delay that
must be adjusted in accordance with the furnace
input rating (nozzle size). Refer to Table A-10 (pg
15) for ECM blower set-up.
10. ELECTRICAL CONNECTIONS
The furnace is listed by the Canadian Standards
Association under the NRTL (North American)
Standard. It is factory wired and requires minimal
field wiring. All field wiring should conform to
CAN/CSA C22.1 Canadian Electrical Code, Part 1,
and by local codes, where they prevail. In the United
States, the wiring must be in accordance with the
National Fire Protection Association NFPA-70,
National Electrical Code, and with local codes and
regulations.
The furnace should be wired to a separate and
dedicated circuit in the main electrical panel;
however, accessory equipment such as electronic
air cleaners and humidifiers may be included on the
furnace circuit. Although a suitably located circuit
breaker can be used as a service switch, a separate
service switch is advisable. The service switch is
necessary if reaching the circuit breaker involves
becoming close to the furnace, or if the furnace is
located between the circuit breaker and the means
of entry to the furnace room. The furnace switch
(service switch) should be clearly marked, installed
in an easily accessible area between the furnace
and furnace room entry, and be located in such a
manner to reduce the likelihood that it would be
mistaken as a light switch or similar device.
The power requirement for the HML-C and HMLV-C
models is: 120 VAC, 1 Ø, 60 Hz., 12A.
Accessories requiring 120 VAC power sources such
as electronic air cleaners and humidifier
30173 Rev B 4/29/2008
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