Installation Guide

TP-7091 2/21 43Section 5 Accessories
Automatic paralleling requires:
 Two single-phase Model 14RCA or two single-phase
Model 20RCA generator sets as described
previously.
 APM RDC2.4 paralleling firmware for the blue-board
controller on each generator set. Download the latest
version of paralleling firmware from TechTools.
 One Model RXT automatic transfer switch (ATS)
 One Automatic Paralleling Module (APM) kit
 A personal computer (laptop) with Kohler
SiteTech software is required for system setup.
 A load management device is required if one
generator set cannot support the maximum total load.
The load management device (load shed kit or RXT
combined interface/load management board) is
necessary in order to shed non-critical loads in the event
that one generator set shuts down and the other
generator set cannot support all of the loads.
See TT-1596, provided with the APM, for complete
installation instructions. The APM and associated
equipment must be installed by a Kohler trained and
authorized distributor or dealer.
If the APM is not installed within sight of the generator
sets, local codes may require the installation of circuit
breakers near the APM. Circuit breaker kits are
available for installation inside the APM enclosure. See
TT-1596 for the circuit breaker kit numbers for the
14RCA and 20RCA generator sets.
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Figure 5-11 PowerSync Automatic Paralleling
Module
5.7 Cold Weather Package
The cold weather package is recommended for reliable
operation at temperatures below 0C (32F). The cold
weather package includes the kits shown in the
following sections. The kits shown below are also
available separately.
5.7.1 Battery Heater
Hot engine and exhaust system.
Can cause severe injury or death.
Do not work on the generator set until
it cools.
WARNING
Servicing the engine heater. Hot parts can cause minor
personal injury or property damage. Install the heater
before connecting it to power. Operating the heater before
installation can cause burns and component damage.
Disconnect power to the heater and allow it to cool before
servicing the heater or nearby parts.
Optional 120 VAC and 240 VAC battery heater kits are
available. The heater is thermostatically controlled.
See Figure 5-12.
Wrap the heater around the battery and secure the cord
using the strap or cable ties provided with the kit. See
Figure 5-13. Plug the power cord into an AC receptacle.
240 volt kits use a 3-pin power connector. Knockouts
are located in the bulkhead for the 240 VAC power
connector. The 240 volt battery heater kit includes an
adapter harness that allows connection of up to three
accessories.
Battery Heater Specifications
Heater wrap voltage 100- 120 VAC or
200- 240 VAC
50/60 Hz
Heater wrap rating, Watts 50
Thermostat temperatures:
On
16C (60F)
Off 27C (80F)
Battery wrap length, mm (in.) 864 (34)
Power cord length, mm (in.) 1830 (72)
Figure 5-12 Battery Heater Specifications