Air Conditioner User Manual
34
Installation (Continued)
Figure 3-10 (Continued)
Unit Gas Trains (Natural Gas)
1000 MBH
Modulating (500 MBH - 1000 MBH)
Flue Assembly Installation
1. Locate the flue assembly and the extension (refer to Fig-
ure 3-11 for extension usage) in the shipwith section of
the unit.
2. Install the flue extension onto the flue assembly as
shown in Figure 3-11.
3. Slide the pipe clamp onto the heater flue tube located in-
side the heater compartment.
4. Insert the tube on the flue assembly into the hole located
in the vertical support for the heat section.
5. Butt both flue tube sections together and center the pipe
clamp over joint.
6. Using the pre-punch holes in the flue assembly, exten-
sion, and the vertical support, install the appropriate
number of mounting brackets. Refer to Figure 3-11 for
details.
Figure 3-11
Flue Assembly
Hot Water Heat Units (SLH_)
Hot water heating coils are factory installed inside the
heater section of the unit. Once the unit is set into place,
the hot water piping and the factory provided three way
modulating valve must be installed. The valve can be in-
stalled inside the heat section or near the unit. If the valve
is installed in a remote location, use field supplied wiring to
extend the control wires from the heater section to the
valve. Two access holes are provided in the unit base as il-
lustrated in Figure 3-2.
Following the guidelines listed below will enchance both the
installation and operation of the "wet heat" system.
Figure 3-12 illustrates the recommended piping configura-
tion for the hot water coil. Table 3-5 list the coil connection
sizes.
Note: The valve actuators are not waterproof.
Failure to protect the valve from moisture may
result in the loss of heating control.
1. Support all field-installed piping independently from the
heating coil.
2. Use swing joints or flexible connectors adjacent to the
heating coil. (These devices will absorb the strains of ex-
pansion and contraction).
3. All return lines and fittings must be equal to the diameter
of the "outlet" connection on the hot water coil.