Installation Guide

INSTALLATION INSTRUCTIONS
TT-1569 6/12b
Original Issue Date: 3/11
Model: 20RES/20RESL and 20RESA/RESAL Generator Sets
Market: Residential/Commercial
Subject: Regulator Heater Kits GM79141-KP1-QS and GM79141-S
Introduction
Regulator heater kits GM79141-KP1-QS and
GM79141-S are designed for the generator set models
listed below.
D 20RES and 20RESL
D 20RESA and 20RESAL
The regulator heater kit is recommended for reliable
engine starting in temperatures from --18_Cto--29_C
(0_Fto--20_F). See Figure 1 for heater specifications.
The regulator heater is a 127 mm (5 in.) diameter round
heating pad with a snap action thermostat and a power
cord. Figure 2 and Figure 3 show the heater installed on
the fuel regulator, which is located on the air intake side
of the generator set.
The regulator heater requires a source of 120 VAC
power. The generator set is equipped with one or two
120 VAC receptacles. On the Model 20RES and
20RESL, one of the receptacles is used for the battery
charger. A receptacle adapter is included in the kit to
allow more than one accessory to be plugged into the
receptacle.
Read the entire installation procedure and compare the
kit parts with the parts list on the last page before
beginning installation. Perform the steps in the order
shown.
Regulator Heater
Heater rating 120 VAC, 60 W
Thermostat
4_C/13_C (40 _F/55_F) Snap action
Pad diameter 127 mm (5 in.)
Cord length 610 mm (24 in.)
Figure 1 Heater Specifications
1
GM79141C
1. Bushing X-634-28
2. Cable ties X-468-2, qty. 2
3. Heater, regulator pad GM79142
4. Screw M933-06040-06, spacer 265861, and existing nut
Note: Place spacer between regulator and mounting bracket.
5. Receptacle with adapter GM84773
2
4
3
5
2
Figure 2 Regulator Heater Installation, Model 20RESA/RESAL