International Thermal Research Diesel and AC Heating System for Recreational Vehicles and... User manual

OASIS™ Hea ing Modulet
Installation and
Operating Manual
Diesel and AC Heating System
for Recreational Vehicles and Yachts
CSA TIL R-17
ANSI/UL307A
CAN/CSA
-C22.2 No.165

Copyright © April 2007
International Thermal Research
INCANADA: INTHEUNITEDSTATES:
2431 Simpson Road Suite D3, 4018 NE 112th Ave.
Richmond, BC, Canada V6X 2R2 Vancouver, WA, USA 98682
Tel: [phone] or 604-278-1272 Tel: [phone] or 360-993-4877
Fax: [phone] Fax: [phone]
Email: [email protected]
Website: http://www.itrheat.com
All rights reserved. No part of this manual may be reproduced or
transmitted in any form by any means, electronic or mechanical,
including photocopying and recording, information storage,
retrieval, or transmission, without permission in writing from
International Thermal Research
Right to Modify:
Due to our commitment for quality and ongoing product
improvement, ITR reserves the right to modify or change
without notice, any materials, applications, equipment,
accessories, and/or prices. All measurements and weights are
approximate.

Table of Contents
Section 1, Overview...................................................1-1
1.1 Unpacking the Heating Module ....................... 1-2
1.2 Protect Your Warranty .................................. 1-2
1.3 Oasis™ Heating Module Features.................... 1-3
1.4 Critical Factors............................................. 1-5
1.5 Equipment, Tools and Skills........................... 1-6
1.6 Testing and Inspection.................................. 1-7
Section 2, Mounting the Oasis™ Heating Module .......2-1
2.1 Before You Begin ......................................... 2-1
2.2 Identifying Your Oasis™ Heating Module Model. 2-2
2.3 Your Mounting Location................................. 2-2
2.4 What NOT to Do........................................... 2-4
2.5 Procedure ................................................... 2-4
Section 3, Installing the Exhaust System...................3-1
3.1 Before You Begin ......................................... 3-1
3.2 Mounting Location........................................ 3-1
Recommended Exhaust Outlet Locations............3-1
Recommendation for Installation ......................3-2
What NOT to Do.............................................3-4
3.3 Procedure ................................................... 3-4
Section 4, Installing the Fuel System ........................4-1
4.1 Before You Begin ......................................... 4-1
4.2 Fuel System Operation.................................. 4-1
Recommendations for Installation..................... 4-1
4.3 What NOT to Do........................................... 4-2
4.4 Procedure ................................................... 4-3
Section 5, Installing Fan Heaters...............................5-1
5.1 Before You Begin ......................................... 5-1
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Table of Contents
5.2 Fan System Operation...................................5-2
Features ....................................................... 5-2
Multiple Zone Heating ..................................... 5-3
Accessories and Components Needed................ 5-3
5.3 What NOT to Do ...........................................5-4
5.4 Mounting Locations.......................................5-4
5.5 Procedure....................................................5-5
Section 6, Wiring the Electrical System..................... 6-1
6.1 Before You Begin..........................................6-1
6.2 12 VDC .......................................................6-1
6.3 120 VAC......................................................6-2
6.4 Remote Operating Panel Cable........................6-2
6.5 Main Electronic Control Board.........................6-3
6.6 Distribution Module Zone Control Board
(Optional)....................................................6-3
6.7 What NOT to Do ...........................................6-4
Section 7, Plumbing the System................................ 7-1
7.1 Before You Begin..........................................7-1
7.2 Plumbing Installation.....................................7-1
7.3 What NOT to Do ...........................................7-4
7.4 Installation Procedure ...................................7-4
Section 8, Operating the Oasis™ Heating Module ...... 8-1
8.1 Features of your Oasis™ Heating Module..........8-1
8.2 Your Heating Module Model............................8-2
8.3 Operating Instructions for the
Oasis™ Heating Module .................................8-3
8.4 Turning the Power to the
Oasis™ Heating Module ON ............................8-4
8.5 Activating the Burner (Primary)
and AC Heat (Secondary) from the
Remote Operating Panel ................................8-5
8.6 Activating the Cabin Fan Heaters
through the Thermostats ...............................8-6
8.7 Activating the Domestic Hot Water..................8-6
8.8 Activating the Engine Heat.............................8-6
8.9 Functions of the Remote Operating Panel .........8-7
8.10 Functions of the Heating Module Control Panel..8-9
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Table of Contents
8.11 Functions of the Distribution Module (Optional)
Zone Control Panel......................................8-10
8.12 Maintenance...............................................8-11
8.13 Protecting the Heating Module and
Distribution Module (Optional) ......................8-13
8.14 General Troubleshooting ..............................8-13
Section 9, Installing Distribution Module, DM-12
(optional) ..................................................................9-1
9.1 Installing your Distribution Module (optional) ... 9-1
9.2 Selecting the Module Location........................ 9-1
9.3 Selecting the Distribution Module
Zone Box Location........................................ 9-2
9.4 Plumbing Installation.................................... 9-3
9.5 Filling/Purging the heating loop...................... 9-7
9.6 Electrical Connection .................................... 9-9
9.7 Distribution Module Zone Control Board..........9-10
9.8 Inspection and Testing.................................9-13
9.9 Hot water temperature adjustment................9-13
Warranty Information & Warranty Card
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Table of Contents
List of Figures
Figure 1-1 Oasis™ Module ........................................1-1
Figure 1-2 Oasis™ Heating and Distribution Module......1-5
Figure 2-1 Module Dimensions ..................................2-3
Figure 2-2 Module Mounting Brackets.........................2-5
Figure 3-1 Installing the Exhaust System
(Bottom Exhaust).....................................3-6
Figure 3-2 The Exhaust Hole Location & Mounting
Template ................................................3-6
Figure 3-7 The Exhaust Goose neck Configuration........3-7
Figure 5-1 Wiring the Fan’s Aquastat..........................5-2
Figure 5-2 Mounting a Spacesaver Fan .......................5-6
Figure 5-3 Installing a Relay for Add’l Fan Amperage....5-6
Figure 6-1 System Wiring.........................................6-3
Figure 7-1 Heating Module........................................7-3
Figure 7-2 Three Approved Methods of Installing
Heater Hose (consult ITR for alternative
methods and products).............................7-5
Figure 8-1 Oasis™ Heating Module.............................8-3
Figure 8-2 Heating Module Main Control Panel.............8-4
Figure 8-3 Remote Operating Panel............................8-7
Figure 8-4 Zone Control Panel.................................8-11
Figure 9-1 Distribution Module ..................................9-2
Figure 9-2 Distribution Module Zone box.....................9-2
Figure 9-3 Distribution Module Fittings Location...........9-3
Figure 9-4 Domestic Hot Water System Plumbing.........9-4
Figure 9-5 Engine Heat / Pre-heat System Plumbing.....9-5
Figure 9-6 Connecting to the OASIS Heating Module ....9-6
Figure 9-7 Connecting two Heating loops....................9-7
Figure 9-8 Initial fill up Oasis system..........................9-8
Figure 9-9 Distribution Module Wiring....................... 9-11
Figure 9-10 Zone Board Wiring (No Distribution module).9-12
Figure 9-11 Mixing valve location .............................. 9-13
vi Installation and Operating Manual for OASIS Heating Module™

Overview
Thank you for purchasing the Oasis™ Heating Module for
recreational vehicles and yachts.
The Oasis™ Heating Module is CSA certified only for
installation into Recreational Vehicles, Manufactured Homes,
and Mobile housing.
Section
1
NOTICE
This section covers critical information you need to know before
beginning the installation including how to protect your Warranty,
and tools and equipment needed.
Figure 1-1: Oasis™ Heating Module
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Section 1, Overview
1.1 Unpacking the Oasis™ Heating Module
When you receive the Oasis™ Heating Module:
1 Unpack it carefully.
2 Check each component against the shipping list to ensure that
you have everything and that all parts arrived undamaged.
3 If you discover any missing or defective parts call IT
R
immediately.
4 If you are not installing the Oasis™ Heating Module right away
secure all components so none will be misplaced.
5 Before installing the Oasis™ Heating Module read the rest
of this Installation and Operating Manual.It contains
critical information for a proper installation.
A properly installed Oasis™ Heating Module is essential for several
reasons:
•To ensure that you and/or your customers receive satisfactory
results and enjoy a warm, comfortable environment.
•To ensure a trouble-free installation, a successful inspection and
testing process, and ease of future maintenance.
•To protect your Warranty.
1.2 Protect Your Warranty
This document reflects approved installation techniques, methods,
and materials, and applies only to ITR equipment. The Oasis™
Heating Module is only guaranteed by ITR if the entire system has
been installed according to the requirements and recommendations
set out here.
This includes:
•Deviations from the instructions in this Manual.
•Changes to any piece of ITR-supplied equipment.
•Substitution of a non-ITR approved component.
No Warranty will be extended to improper installations. Use of any
unapproved materials, equipment or installation procedures will
1-2 The Oasis™ Heating Module

Section 1, Overview
result in a voided warranty for the entire heating system. Any loss
of service or damage as a result of any unapproved modification is
the responsibility of the installer. ITR accepts no liability for any
damage or loss of service resulting from unapproved modifications.
1.3 Oasis™ Heating Module Features
• Efficient
• Clean
• Quiet
• Compact
• Safe
• Rugged
• Reliable
• Economical
The Oasis™ Heating Module uses a diesel burner (12 VDC)
controlled by a multi-functional electronic controller as the primary
source of heating coolant fluid (anti-freeze and water). Two 1500
Watt, 120 VAC immersion elements are used as secondary heat
sources. The Oasis™ Heating Module heats the coolant fluid to
provide a source of heat for all hydronic space heating needs.
When used with the Distribution Module (optional) and its integral
distribution pumps, the Oasis™ Heating Module has the ability to
circulate the coolant fluid to all space heating areas. It can also
provide a supply of domestic hot water using the integral heat
exchanger in the Distribution Module. The Oasis™ also incorporates
engine heat and preheat functions. (see Figure 1-2: Oasis™
Heating and Distribution Modules).
Other features of the Oasis™ Heating Module include:
•A high-temperature, stainless steel burner and stainless steel
jacket.
•9.5 US gallon welded, insulated stainless steel coolant tank that
minimizes heat loss and optimizes heat recovery.
•Low coolant level switch on the tank.
•Easy to install, completely modular and field serviceable with the
Oasis™ Heating Module hookups and connections easily
accessible from the front and top of the Heating Module.
•Quiet operation and low power consumption.
•Low pressure fuel system with built-in fuel pump.
•Fuel efficient burner capable of burning a wide variety of diesel-
based fuels.
•Exhaust has minimal smoke and smell.
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Section 1, Overview
•Fan assisted sealed combustion chamber is designed to use
outside combustion air.
•Simple, low amperage draw ignition.
•Electronically-controlled system with:
•automatic Safety Shutdown;
•manual-resettable aquastats for safety overheat protection.
•LED indicators on the Control Panel for diagnostics.
•Patented, proprietary flame sensor.
•Heating Module Remote Operating Panel with ON/OFF switch for
the diesel burner, AC elements, and engine heat, if installed.
•Heating Module Control Panel with buttons for Power, Bypass,
Reset, and indicator LED’s for operational and diagnostic
information.
•Distribution Module if installed with built in distribution pumps
and heat exchanger for heating multiple zones and also
producing domestic hot water. Heat exchanger also allows
engine pre-heating as well as using engine waste heat. The Zone
Board Controls up to five space heating zones.
1-4 The Oasis™ Heating Module

Section 1, Overview
Figure 1-2: Oasis™ Heating and Distribution Module
1.4 Critical Factors
THE INSTALLATION SHALL BE IN ACCORDANCE WITH THE
REGULATIONS OF AUTHORITIES HAVING JURISDICTION
The key factors to keep in mind when planning and carrying out the
installation are:
Pay attention to the
notices of “Danger”
“Warning” “Caution”
and “Notice” in this
manual.
•Mounting location restrictions for the Oasis™ Heating Module,
optional Distribution Module , and exhaust outlet (to reduce
noise, vibration, heat loss, etc.).
•Length, routing and sizing of fluid lines, fuel lines, air-flow
tubing, exhaust piping and wiring.
•Unrestricted vent required to draw in 100% outside air for
combustion.
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Section 1, Overview
•Ability for technician to easily access and service the product,
especially fuel, plumbing, and electrical systems.
•After installation, ability to purge water and fuel lines and
inspect/test entire system using the ITR-supplied Inspection
Check Sheet.
1.5 Equipment, Tools and Skills
As the user and/or installer, you must be qualified and authorized to
do the installation, which requires mechanical aptitude and electrical
knowledge. Make sure you comply with existing RVIA or ABYC
industry practices, using the highest and most recent standards and
codes. Good workmanship is essential. Please refer back to
Section 1 – Overview, sub-Section 1.2, Protect Your Warranty.
You will need the following equipment and tools to install the
heating system (not supplied). This list does not include optional
equipment and accessories:
•Standard tools normally available in a well-equipped shop.
•Approved fasteners for mounting the heater unit.
•Steel (or stainless steel) 2” ID exhaust system piping, maximum
12’ with no bends. (See Section 3 – Installing the Exhaust
System, for details when bend are present.).
•Exhaust collar.
•ITR-muffler with straight-through design.
•1/4” supply fuel line, approved rubber or copper.
•#10 sheet metal screws or wood screws to mount fan units
inside the occupied areas.
•Heater hose (to connect optional Distribution Module hose
fittings to interior fans).
•Domestic water hose and/or tubing to connect the Distribution
Module hose fittings to the domestic water system.
•Overflow tank to connect to the Oasis™ Heating Module with
clear plastic 3/8” hose; tank must be heavy-duty plastic, with a
1-6 The Oasis™ Heating Module

Section 1, Overview
screw-down cap, and sturdy enough to mount firmly to a vertical
surface.
•Up to five (5) thermostats (DC compatible) to allow temperature
regulation of the heating zones when connected to the
Distribution Module.
1.6 Testing and Inspection
After all components have been properly installed according to
standard practices, RVIA or ABYC standards, and the
recommendations of this Installation and Operating Manual, the
Oasis™ Heating Module should be test-operated for inspection
purposes.
For your convenience, you can use the pullout Inspection Check
Sheet in this Manual. The Inspection Check Sheet is divided into
progressive sections, allowing each phase of the inspection to be
carried out systematically, and then signed off by authorized
persons.
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Section 1, Overview
1-8 The Oasis™ Heating Module

Section
2
Mounting – Oasis™ Heating
Module
2.1 Before You Begin
Plan the location of the Oasis™ Heating Module and all its major
components in advance to ensure the chosen locations are
compatible with installation requirements and within the technical
specifications.
Consider the following factors to help you decide exactly where
best to mount the Oasis™ Heating Module:
•Oasis™ Heating Module weight when full (160 lbs).
•Ventilation requirements.
•Exhaust outlet location and maximum acceptable length.
•Thru hull location and waterline (yachts).
•Potential for vibration and jarring.
•Length of run from fuel source to heater.
•Most efficient plumbing runs.
•Safe and convenient access for maintenance.
•Number and location of interior fans.
•Location of other equipment to be installed or connected to
the Oasis™ Heating Module, including the optional
Distribution Module, Zone Control Box, heat exchangers,
overflow tank, batteries, etc.
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Section 2, Mounting the Oasis™ Heating Module
Make sure you are familiar with Section 1 – Overview of this
Manual. If the system is not installed according to specifications
and with the correct equipment, your Oasis™ Heating Module may
not operate properly, safety may be compromised, and your
Warranty may be voided.
!
W
ARNING
2.2 Identifying Your Oasis™ Heating
Module Model
As the owner, you must be fully aware of the controls and
operating features particular to your model of the Oasis™ Heating
Module. This is essential for the proper functioning and life of your
Oasis™ Heating Module as well as protecting your warranty. Your
model can be identified by locating the serial number label on the
outside case of the Oasis™ Heating Module. The serial number
identifies the model type through the first series of letters and
numbers.
The types of Oasis™ Heating Module models are:
CH50 – Oasis™ Heating Module
CH35 (“CSA Certification Pending”) – Oasis™ Heating
Module
2.3 Your Mounting Location
Your mounting location should consider the following:
•Mounting location must be able to support double the gross
weight of the Oasis™ Heating Module (i.e. 160 lbs. x 2 =
320lbs./73 KG x 2 = 146 KG) and must be of a non-
combustible and non absorptive surface.
•Oasis™ Heating Module is 14”H x 14”W x 30” D. (35.6 cm x
35.6 cm x 76.1 cm), see Figure 2-1: Module Dimensions.
•Oasis™ Heating Module must be installed in a compartment
which is completely isolated from the atmosphere of living
spaces.
2-2 The Oasis™ Heating Module

Section 2, Mounting the Oasis™ Heating Module
•Combustion air must be drawn from an outside source and
cannot contain any combustible gases.
•Oasis™ Heating Module must be mounted in an area that
provides unrestricted access to the front panel. Allow space for
connection to the fuel and coolant lines, as well as the power
and exhaust connections. (Minimum of 10” top clearance - top
exhaust version; minimum of 6” top clearance - bottom
exhaust version; 0” clearance to all other Oasis™ Heating
Module surfaces). Allow 1” clearance on the sides for attaching
the mounting brackets.
•Mount the unit with the front panel side facing out and
accessible. Facing out simplifies installation and maintenance.
•Oasis™ Heating Module must be mounted horizontal and level
using eight, 1/4” through bolts and 1” diameter fender
washers, lock washers and nuts.
Figure 2-1: Module Dimensions
Oasis™ Heating Module must not be installed or operated in any
compartment with flammable gases.
! DANGER
If the Oasis™ Heating Module is going to be mounted in the engine
compartment, check for adequate ventilation. When the engine is
running this area could be under a negative pressure. Make sure
the air-intake and exhaust hoses have no leaks and are well
fastened to the heater, muffler and thru-hull fitting. Assembly
!
W
ARNING
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Section 2, Mounting the Oasis™ Heating Module
parts that may cause injury through accidental contact should be
protected.
Isolate the unit in a closed compartment so that no air from the
heater will infiltrate the living areas.
! DANGER
•It is recommended that a catchpan be placed under the Oasis™
Heating Module for containing any unexpected leakage.
•Choose a sturdy surface in a location that won’t be unduly
affected by vibration and the jarring of rough roads or rough
seas.
•Ensure that the exhaust tubing can be properly and safely
routed to the outside. The maximum exhaust run for the
system is 12’.
2.4 What NOT to Do
•Don’t mount the Oasis™ Heating Module in the rear of the
coach or yacht underneath the sleeping area. The sound of the
Oasis™ Heating Module cycling on and off may disturb light
sleepers.
2.5 Procedure
After choosing the mounting location for the Oasis™ Heating
Module, mount the module horizontally and level. Secure the
Oasis™ Heating Module in place (against the wall, floor or a
mounting platform) using eight (8) x 1/4” through bolts and 1”
diameter fender washers, lock washers, and nuts. (See Figure 2-2:
Module Mounting Brackets.).
2-4 The Oasis™ Heating Module

Section 2, Mounting the Oasis™ Heating Module
Figure 2-2: Module Mounting Brackets
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Section 2, Mounting the Oasis™ Heating Module
2-6 The Oasis™ Heating Module