ITR OASIS NE User manual

OASIS
®NE Heating
System
Installation and
Operating Manual
Diesel and AC Heating System
for Recreational Vehicles and Yachts
CAN/CSA-C22.2 No.110-94 (R2014)
CSA B140.10-06 (R2015), CSA B140.0-03 (R2013)
UL307A (Edition 8), UL174 (Edition 11)

Copyright © September 2016
International Thermal Research
IN CANADA: IN THE UNITED STATES:
2431 Simpson Road 11915 NE 56th Circle Suite B
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
iv Draft: Oct 15/03 Installation Manual for RV Heater System
Table of Contents
Section 1, Overview .................................................. 1-1
1.1 Unpacking the Oasis®NE Heating System ........1-2
1.2 Protect Your Warranty....................................1-2
1.3 Oasis®NE Heating System 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®NE Heating System... 2-1
2.1 Before You Begin...........................................2-1
2.2 Identifying Your Oasis®NE Heating System
Model .......................................................2-2
2.3 Your Mounting Location..................................2-2
2.4 What NOT to Do............................................2-4
2.5 Oasis®NE Mounting Procedure........................2-4
2.6 Zone Control Board Mounting Procedure...........2-5
2.7 Remote Operating Panel Mounting Procedure....2-6
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 Installation.................................4-1
Recommendations for Installation ...........................4-1
4.3 What NOT to Do............................................4-2
4.4 Procedure.....................................................4-3

Table of Contents
International Thermal Research Ltd. Draft: Oct 15/03 v
Section 5, Installing Fan Heaters............................... 5-1
5.1 Before You Begin .......................................... 5-1
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 Oasis®NE 12 VDC......................................... 6-2
6.3 Oasis®NE 120 VAC ....................................... 6-3
6.4 Wiring The Zone Control Board....................... 6-4
Cabin Fan Leads ........................................... 6-4
Thermostat Leads ......................................... 6-5
6.5 What NOT to Do ........................................... 6-5
Section 7, Plumbing the System ................................ 7-1
7.1 Before You Begin .......................................... 7-1
7.2 Coolant Plumbing Installation ......................... 7-2
7.3 What NOT to Do ........................................... 7-4
7.4 Coolant Plumbing Installation Procedure .......... 7-5
7.5 Potable Water Plumbing Installation ................ 7-6
7.6 Engine Plumbing Installation .......................... 7-7
7.7 Procedure For Filling/Purging The Oasis®NE
Heating System ........................................... 7-8

Table of Contents
vi Draft: Oct 15/03 Installation Manual for RV Heater System
Section 8, Operating the Oasis®NE Heating System.. 8-1
8.1 Features of your Oasis®NE Heating System .....8-1
8.2 Operating Instructions for the
Oasis®NE Heating System .............................8-3
8.3 Turning the Power to the
Oasis®NE Heating System ON ........................8-4
8.4 Activating the Burner (Primary)
and AC Heat (Supplemental) from the
Remote Operating Panel.................................8-5
8.5 Activating the Cabin Fan Heaters
through the Thermostats................................8-6
8.6 Activating the Potable Hot Water.....................8-6
8.7 Potable Water Temperature Adjustment ...........8-7
8.8 Activating the Engine Heat & Pre-heat .............8-8
8.9 Functions of the Remote Operating Panel .........8-9
8.10 Functions of the Oasis®NE Control Panel........ 8-11
8.11 Functions of the Zone Control Board .............. 8-12
8.12 Potable Water and Space Heating Priority....... 8-14
8.13 Maintenance ............................................... 8-15
8.14 Protecting the Heating System ...................... 8-16
8.15 General Troubleshooting .............................. 8-17
Warranty Information & Warranty Card

Table of Contents
International Thermal Research Ltd. Draft: Oct 15/03 vii
List of Figures
Figure 1-1 Oasis®NE Heating System ........................ 1-1
Figure 1-2 Oasis®NE Heating System Overview .......... 1-5
Figure 2-1 Oasis NE Heating Dimensions .................... 2-3
Figure 2-2 Oasis NE Mounting Brackets ...................... 2-5
Figure 2-3 Zone Control Board .................................. 2-6
Figure 2-4 Remote Operating Panel Mounting.............. 2-6
Figure 3-1 Installing the Exhaust System
(Bottom Exhaust)..................................... 3-6
Figure 3-2 The Exhaust Hole Location & Mounting
Template ................................................ 3-7
Figure 3-3 The Exhaust Goose neck Configuration........ 3-7
Figure 5-1 Wiring the Fan’s Aquastat.......................... 5-2
Figure 5-2 Mounting a Low Profile Cabin Fan ............... 5-6
Figure 5-3 Installing a Relay for Add’l Fan Amperage ... 5-6
Figure 6-1 System Wiring ......................................... 6-2
Figure 7-1 Oasis®NE Overview ................................. 7-3
Figure 7-2 Plumbing Oasis®NE For 5 Zones ................ 7-3
Figure 7-3 Three Approved Methods of Installing
Heater Hose (consult ITR for alternative
methods and products) ............................. 7-6
Figure 7-4 Potable Hot Water System Plumbing........... 7-7
Figure 7-5 Engine Heat / Pre-heat System Plumbing .... 7-8
Figure 7-6 Filling/ Purging Oasis®NE Heating System
Engine Heat / Pre-heat System Plumbing .... 7-9
Figure 8-1 Oasis®NE Heating System Overview .......... 8-3
Figure 8-2 Oasis®NE Main Control Panel .................... 8-4
Figure 8-3 Mixing valve location ................................ 8-7
Figure 8-4 Remote Operating Panel........................... 8-9
Figure 8-5 Zone Control Board ................................ 8-13
Figure 8-6 Zone Control Board Proority Jumper ......... 8-14

International Thermal Research 1-1
Overview
Thank you for purchasing the Oasis®NE Heating System for
recreational vehicles and yachts (for use on vessels over 65 feet in
length).
The Oasis®NE Heating System is CSA/UL certified only for
installation into Recreational Vehicles, Manufactured Homes,
and Mobile housing.
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®NE heating system
Section
1
NOTICE

Section 1, Overview
1-2 The Oasis®NE Heating System
1.1 Unpacking the Oasis®NE Heating
System
When you receive the Oasis®NE Heating System:
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 ITR
immediately.
4
If you are not installing the Oasis®NE Heating System right
away, secure all components so none will be misplaced.
5
Before installing the Oasis®NE Heating System read the
rest of this Installation and Operating Manual.It contains
critical information for a proper installation.
A properly installed Oasis®NE Heating System 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®NE
Heating System 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.

Section 1, Overview
International Thermal Research 1-3
No Warranty will be extended to improper installations. Use of any
unapproved materials, equipment or installation procedures will
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®NE Heating System Features
The Oasis®NE Heating System uses a 50,000 BTU (true output)
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 to provide an additional 10,000 BTU of
heat. The Oasis®NE Heating System heats the coolant fluid to
provide a source of heat for all hydronic space heating needs.
Through the use of its integral distribution pumps, the Oasis®NE
Heating System 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. The Oasis®also
incorporates engine heat and preheat functions. (see Figure 1-2:
Oasis®NE Heating System).
Other features of the Oasis®NE Heating System include:
Built in distribution pumps and heat exchangers for heating
multiple zones and also producing domestic hot water. Heat
exchanger also allows engine pre-heating (optional) as well as
using engine waste heat. The Zone Board Controls up to five
space heating zones.
Support for potable hot water demand. The mixing valve is
factory set to limit the maximum temperature of the heated
potable water to 120ºF (49°C) with a total hot water demand of
1.5 GPM or less, and an incoming water temperature of 55ºF
(13ºC) or higher.
Easy to install and field serviceable with system hookups and
connections easily accessible from the top of the heater.
Easy to fill and purge zero pressure system.
Easy to drain.
•Efficient
•Clean
•Quiet
•Compact
•Safe
•Rugged
•Reliable
•Economical

Section 1, Overview
1-4 The Oasis®NE Heating System
A high-temperature, stainless steel burner and stainless steel
jacket.
7.5 US gallon, welded, insulated stainless steel coolant tank that
minimizes heat loss and optimizes heat recovery.
Domestic water flow switch for quick response to domestic hot
water demand.
Low coolant level switch.
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 (CSA/UL certified for diesel #1 and #2).
Exhaust has minimal smoke and smell.
Fan assisted sealed combustion chamber is designed to use
outside combustion air.
Low amperage draw ignition.
Electronically-controlled system featuring:
automatic Safety Shutdown;
manual-resettable aquastats for safety overheat protection.
LED indicators on the Control Panel for diagnostics.
Patented, proprietary flame sensor.
Remote Operating Panel with ON/OFF switch for the diesel
burner, AC elements, and engine pre-heat, if installed.
Control Panel with buttons for Power, Bypass, Reset, and
indicator LED’s for operational and diagnostic information.