89
Electric Heating
Set thermostat in the heat mode; call for heat
to engage all electric heat strips. Check
blower for proper rotation and voltage.
Measure
the
amperage
and
voltage.
Compare them to the nameplate data.
If applicable, check remote heat pump
condenser as per the manufacturer’s
recommendations.
Steam or Hot Water Heating
Set thermostat in the heat mode. Observe
supply blower for proper rotation and
voltage. Check boiler or hot water operation
according to the manufacturer’s instructions.
Check control flow valves for correct
operation
and
settings
per
the
manufacturer’s instructions.
Cleaning
Inspect and clean unit interior at the
beginning of each heating and cooling
season and as operating conditions require.
Chilled Water
Check remote chiller operations as per the
manufacturer’s instructions. Check coolant
flow valves for correct operation and
settings.
DX Water Source Cooling
Set unit controls to cooling mode of
operation with supply fans on. Check the
fan
for
correct
operating
direction,
amperage, and voltage. Check compressor
operation, rotation, amperage, and voltage to
the unit nameplate (check the amperage on
the load side of the compressor contactor).
Condensate Drain Pans
Drain pans will have moisture present and
require
periodic
cleaning
to
prevent
microbial growth. Cleaning of the drain
pans will also prevent any possible plugging
of the drain lines and overflow of the pan
itself. Cleaning of the drain pans and inside
of the unit should be done only by a
qualified service technician.
Duct Furnace
The duct furnace should be inspected
annually by a qualified service agency. The
condition of the burners, heat exchanger,
draft inducer, vent system, operating
controls and wiring should be determined.
Check for obvious signs of deterioration,
accumulation of dirt and debris and any heat
or water related damage. Any damaged or
deteriorated parts should be replaced before
the unit is put back into service. Check the
automatic gas valve to insure the gas valve
seat is not leaking. Check wiring
connections to be sure they are secure and
inspect wiring for any deterioration.
Lubrication
Most motors and bearings are permanently
lubricated. Some applications may require
that bearings be re-lubricated periodically.
The schedule will depend on the operating
duty, temperature variations, and other
atmospheric conditions.
For bearings equipped with lubrication
fittings,
the
lubrication
schedule
is
dependent on operating temperatures and
rotational speeds as shown in the table
below. Lithium based grease conforming to
an NLGI grade No. 2 consistency is
recommended. This medium viscosity, low
torque grease is rust inhibiting and water-
resistant. It is satisfactory for operating
temperatures in the range of –10
F to 250
F.
Bearings should only be re-lubricated when
at normal operating temperatures and not
running. Rotate the fan shaft by hand,
adding only enough grease to purge the
seals. A one-inch bearing has a total grease
capacity of only .25 ounces. Added grease
should be limited to .09 ounces.
DO NOT OVER LUBRICATE.
Recommended greases are:
SHELL OIL - DOLIUM R
CHEVRON OIL - SRI No. 2
TEXACO INC. - PREMIUM RB
Summary of Contents for M2 Series
Page 2: ......
Page 5: ...5 Split System Piping Diagrams 98 M2 Series Startup Form 115 Maintenance Log 121 ...
Page 35: ...35 Table 1 Electric and Gas Heating Capacities ...
Page 38: ...38 Figure 5 M2 Series Unit Four Point Lifting ...
Page 39: ...39 Figure 6 M2 Series Unit Eight Point Lifting ...
Page 58: ...58 Figure 32 Supply Fan Banding ...
Page 95: ...95 Figure 52 Filter Layout Viewed from the Upstream Side of the Cooling Coil ...
Page 98: ...98 Split System Piping Diagrams Figure 53 A C Split System Piping Suction Down ...
Page 99: ...99 Figure 54 A C Split System Piping Suction Up ...
Page 100: ...100 Figure 55 A C with LAC Split System Piping Suction Up ...
Page 101: ...101 Figure 56 A C with Modulating Hot Gas Reheat Split System Piping Suction Down ...
Page 102: ...102 Figure 57 A C with Modulating Hot Gas Reheat Split System Piping Suction Up ...
Page 103: ...103 Figure 58 A C with Hot Gas Bypass Split System Piping Suction Down ...
Page 104: ...104 Figure 59 A C with Hot Gas Bypass Split System Piping Suction Up ...
Page 107: ...107 Figure 62 Heat Pump Split System Piping Suction Down ...
Page 108: ...108 Figure 63 Heat Pump Split System Piping Suction Up ...
Page 109: ...109 Figure 64 Heat Pump with Modulating Hot Gas Reheat Split System Piping Suction Down ...
Page 110: ...110 Figure 65 Heat Pump with Modulating Hot Gas Reheat Split System Piping Suction Up ...
Page 111: ...111 Figure 66 Heat Pump with Hot Gas Bypass Split System Piping Suction Down ...
Page 112: ...112 Figure 67 Heat Pump with Hot Gas Bypass Split System Piping Suction Up ...