Dettson HYDRAR15-M2401M Quick start guide

ELECTRIC BOILER
MECHANICAL CONTROL
2016-09-23
X40246 Rev. B
HYDRAR15-M2401M
HYDRAR18-M2401M
HYDRAR20-M2401M
HYDRAR24-M2401M
HYDRAR27-M2401M
HYDRAR29-M2401M
Models:
Manufactured by:
Dettson Industries Inc.
Sherbrooke (Québec)
Canada
www.dettson.ca
Attention
Do not tamper with the unit
or its controls. Call a
qualified service technician.
Printed in Canada on 100% recycled paper
INSTALLER / SERVICE TECHNICIAN :
USE THE INFORMATION IN THIS MANUAL FOR THE
INSTALLATION / SERVICING OF THE BOILER AND KEEP THE
DOCUMENT NEAR THE UNIT FOR FUTURE REFERENCE.
HOMEOWNER :
PLEASE KEEP THIS MANUAL NEAR THE BOILER FOR FUTURE
REFERENCE.

2
TABLE OF CONTENT
SECTION 1 : INSTALLATION........................................................................................................ 3
1) DANGER, WARNING AND CAUTION..................................................................................................................3
2) HEATING WITH HOT WATER .............................................................................................................................3
3) DELIVERY.............................................................................................................................................................3
4) INSTALLATION.....................................................................................................................................................3
5) CLEARANCES......................................................................................................................................................4
6) DISTRIBUTION SYSTEM.....................................................................................................................................4
7) INSTALLATION OF THE BOILER........................................................................................................................6
8) ELECTRIC POWER SUPPLY...............................................................................................................................6
1. CONNECTING THE CIRCULATING PUMP......................................................................................................................6
2. CONNECTING THE THERMOSTAT.................................................................................................................................6
SECTION 2 : OPERATION............................................................................................................. 7
1) ADJUSTMENTS AND START-UP........................................................................................................................7
2) MECHANICAL HIGH LIMIT ..................................................................................................................................7
SECTION 3 : MAINTENANCE........................................................................................................ 7
SECTION 4 : INFORMATION......................................................................................................... 7
SECTION 5 : TECHNICAL DATA .................................................................................................. 8
SECTION 6 : REPLACEMENT PARTS ........................................................................................13
LIST OF FIGURES
Figure 1: Mounting configurations.......................................................................................................................................................4
Figure 2: Boiler components................................................................................................................................................................5
Figure 3: Boiler Dimensions ................................................................................................................................................................9
Figure 4: Typical Diagram of a Single Zone Installation ....................................................................................................................10
Figure 5: Multizone Diagram with more than one Circulator..............................................................................................................10
Figure 6: Multizone diagram with Motorized Valves ..........................................................................................................................11
Figure 7: Electrical Diagram..............................................................................................................................................................12
Figure 8: Exploded View....................................................................................................................................................................13
LIST OF TABLES
Table 1: Minimum clearances to combustible materials......................................................................................................................4
Table 2: Hydra Compact –Technical specifications............................................................................................................................8
Table 3: Parts list...............................................................................................................................................................................14

3
SECTION 1 : INSTALLATION
1) DANGER, WARNING AND CAUTION
The words DANGER, WARNING and CAUTION are used to identify
the levels of seriousness of certain hazards. It is important that you
understand their meaning. You will notice these words in the manual
as follows:
DANGER
Immediate hazards which WILL result in death or serious injury.
WARNING
Hazards or unsafe practices which CAN result
in death or injury.
CAUTION
Hazards or unsafe practices which CAN result in
personal injury, product or property damage.
2) HEATING WITH HOT WATER
Your HYDRA REVOLUTION electric boiler was carefully assembled
and checked in our plant, so that it will deliver warmth and comfort to
your home for many years to come.
This manual is intended to provide the necessary information for the
installation of the unit, how it functions and explains security
measures which are particular to this type of equipment.
It is essential that the persons installing, operating or adjusting the
boiler carefully read this manual, in order to completely understand
and be familiar with the procedures to be followed.
Any questions relative to the operation, maintenance or guarantee
should be directed to the company where the equipment was
purchased.
Upon completion of the installation, this manual should be placed
back into its original envelope and kept near the boiler for future
reference.
3) DELIVERY
Upon delivery of the boiler, check the nameplate to be sure that
you have received the model with the correct rating and proper
voltage.
The following items are supplied with the unit:
- A pressure relief valve, adjusted to 30 psi;
- A drain valve;
- A ¼” NPT cap to cork the ¼” NPT nipple between the
elements in the case the boiler is installed horizontally;
- A ¼‘’ NPT coupling for the installation of the air vent if
unit is installed in the upright position;
- Two 1” x ¾” or 1¼“ x ¾“ reducers for the pressure
relief valve and the drain valve.
4) INSTALLATION
WARNING
The installation of this unit must be performed
by a qualified technician and it must conform to
the standards and regulations in force as well
as the Canadian Installation Code for Hydronic
Heating Systems CSA B214-01.
Positioning
The unit must be installed in an area that is dry, non-corrosive,
without excessive dust, well ventilated and where the ambient
temperature does not exceed 27oC (80oF).
The boiler can be installed using the included mounting brackets.
First, unfold the four tabs on the back panel of the boiler. Position
the top bracket and secure it to a wall. Place the boiler on the top
bracket and then secure the bottom. Finally, use self-tapping screw
to secure the tabs to the bracket. Ensure that the unit is well fixed
on the wall utilizing the 2 mounting brackets.
The boiler can be installed in 6 possible configurations as shown in
figure 1.
Ensure that it is installed level and that the clearances indicated in
Table 1 are respected.

4
Figure 1: Mounting configurations
5) CLEARANCES
The following clearances should be provided for the servicing of the
unit:
Table 1: Minimum clearances to combustible materials
LOCATION
CLEARANCE
Access side to elements
13 ¼‘’ (34 cm)
Sides
4’’ (10 cm)
Bottom
0
Front*
24’’ (61 cm)
Back
0
* If the boiler is in an enclosure, provide a door or a removable panel
in front to access the control panel.
6) DISTRIBUTION SYSTEM
The proper functioning of your heating system is directly related to the
quality of the plumbing installation. Therefore, the entire installation
must be performed by qualified technicians.
See Figure 2 for the functions of the various boiler components.
The heatingsystem must beset-up to operateat a maximum pressure
of 28 psi and the operating temperature may range from 21oC to 88oC
(70oF to 190oF).

5
Figure 2: Boiler components

6
Freeze protection (when required)
WARNING
Only propylene glycol may be used in this
hydronic heating system, to prevent freezing.
It is recommended to add a maximum of 50% of
propylene glycol mixture to ensure proper
operation.
Do not use automotive anti-freeze, ethylene
glycol or any undiluted anti-freeze.
If the above recommendations are not followed,
severe personal injury, death or substantial
property damage can result.
All installations must include the following items:
a. 1 pressure regulator, adjusted to 12 psi, must be installed
between the boiler and the main water supply in the building;
b. 1 expansion tank, pre-pressurized to 12 psi and of appropriate
size;
c. 1 or more automatic air purge valves;
d. 1 or more circulating pumps of appropriate capacity.
CAUTION
To avoid water damage and/or scalding due to relief
valve operation, a discharge line must be connected to
the valve outlet and run to a drainage area. The
discharge line shall be installed in such a way that it will
allow for the complete drainage of the valve and the
discharge line.
7) INSTALLATION OF THE BOILER
At the time of installation, the following steps should be followed.
Refer to Figure 3, 4, 5, 6 and 7.
1. Choose an appropriate location. Mount the boiler securely onthe
wall, with the help of the mounting plate. Ensure that it is level
and that the minimum clearances are observed;
2. Install the drain valve and the safety valve according to the
mounting configuration as shown in Figure 1;
3. An air vent must be installed on the unit if installed upright
position, water connections at the bottom. In all other mounting
position, cork the hole with the ¼’’ plug provided.
4. Install the water supply and return piping with the 1" or 1¼" NPT
fitting;
5. The heating supply line must include:
a. 1 circulator along with 2 maintenance valves;
b. 1 automatic pressure reducing valve adjusted to 12 psi,
with a shut-off valve on the return water line;
c. 1 expansion tank;
d. 1 automatic vent.
6. The flow of water through the system must be sufficient to
continuously discharge the energygenerated by the boiler. If not,
the High Limit protector will disconnect all the electric elements
and a more or less frequent cycling mode will be established by
the Safety Control (see the Technical Specifications Table);
7. In order to ensure satisfactory water flow, the friction in the piping
system must not exceed the capacity of the circulator;
8. After having completed all piping connections, run water through
the system and purge the air. The automatic vent should be in
operation.
Note: Remove the plastic cover and check to see if the elements
are watertight.
8) ELECTRIC POWER SUPPLY
All electrical wiring must conform to the standards and regulations in
force and the Canadian Electrical Code CSA C22.1.
Electrical power to the boiler must come from a 120/240V-60 Hz or
208V-60 Hz, single phase, 3-wire, grounded circuit, protected by an
appropriately sized breaker, based on the total rating of the boiler.
When using 208V, change the connector’s position at the primary of
the transformer. Refer to the boiler nameplate and the technical
specifications in this manual to select the proper breaker and wire
size.
WARNING
RISK OF FIRE
The conductor sizing must conform to the last
edition of the local or national codes.
Failure to follow this rule can result in death,
bodily injury and/or property damage.
Power supply to the unit can be made using copper or aluminium
wires. The wire size must be decided in accordance to unit power
consumption, the over current protection type and capacity, the wire
type and length, and the environment where the unit is installed. If
an aluminium wire is used, other precautions (such as the use of a
DE-OX inhibitor) must be taken to insure the conformity of the
installation. In all cases, all the factors affecting the wire gauge must
be considered and the installation codes followed.
The exterior of the unit must have an uninterrupted ground to
minimize the risk of bodily harm. A ground terminal is supplied with
the control box for that purpose.
In the event that wires inside the unit require replacement, these
must be as same type as originals. (Copper wiring only)
1. CONNECTING THE CIRCULATING PUMP
Connect the circulating pump on 120V connections points identified
P-P in the control panel as shown in Figure 2. The control is designed
to operate the circulator on thermostat demand.
2. CONNECTING THE THERMOSTAT
Single heating zone
Connect the low voltage thermostat to R-W terminals located inside
the control panel. See Figure 4.
Multiple heating zones
Connect the contacts of the motorized valves or pump controls to R-
W terminals inside the control panel. See Figure 5 and 6.
Compliance with Canadian Energy Efficiency regulations
The jumper between W1 and W2 must remain connected in order to
comply with the Canadian Energy Regulations.

7
SECTION 2 : OPERATION
1) ADJUSTMENTS AND START-UP
CAUTION
The boiler must be filled with water and all air
purged from the system, before turning on the
power.
CAUTION
If the power is turned on before the boiler is filled
with water, the elements will become seriously
damaged.
1. Adjust the setpoint of the boiler on the aquastat.
2. Turn on the power, set the thermostat at 30C (85F). The
circulator should start as well as the electrical elements in
sequence with a 8 seconds delay;
3. The circulator stays on for as long as there is a call for heat.
2) MECHANICAL HIGH LIMIT
Mechanical High Limit Control
The mechanical limit control must be set 20oF above the setpoint
temperature on control aquastat.
SECTION 3 : MAINTENANCE
The property owner has the following responsibilities:
a. Maintain the area around the boiler clean at all times and free
from combustible and flammable material;
b. Ensure that the ambient air at the boiler is not excessively dusty
or humid;
c. Have all water leaks repaired in the system as they arise.
d. Ensure that the ambient temperature in the area where the unit
is installed does not exceed 27oC (80oF).
CAUTION
The boiler guaranty may be invalidated if: water
leaks in the system are not repaired; the boiler is
used as a source of domestic hot water or a
significant amount of new water or air is introduced
into the system.
It is recommended that the boiler be purged annually, in order to
eliminate sediment and sludge that may have accumulated at the
bottom of the boiler and covering the heating elements.
Procedure:
1. Let the boiler cool down;
2. Close the maintenance valves, which are installed at the water
inlet and outlet of the boiler. N.B.: It is not recommended to drain
the water from the heating pipe system;
3. Hook-up a garden hose to the drain valve and place it close to a
floor drain;
4. Open the purge valve until the water comes out clean and clear;
5. Close the valve.
It is recommended to perform a visual inspection of the boiler
electrical compartment annually, during the heating season. The
items to check are the water tightness of the elements, signs of
overheating of the electrical components and the wiring. Corrective
measures must be undertaken as required, as soon as possible.
Defective components should always be replaced with the Original
Equipment Manufacturer’s parts.

7
SECTION 4 : INFORMATION
Model:
Serial number:
Installation date of the electric boiler:
Service telephone # –Day:
Night:
Dealer name and address:

8
SECTION 5 : TECHNICAL DATA
Table 2: Hydra Compact –Technical specifications
Model Number
POWER (KW@240V)
POWER (KW@208V)
Electric element #1 (kW)
Electric element #2 (kW)
Electric element #3 (kW)
Electric element #4 (kW)
Electric element #5 (kW)
Electric element #6 (kW)
Consumption (Amp @208V / @240V)
VOLTAGE - FREQUENCY - PHASE
Supply - Return
Minimum water flow USG/min
Overall Dimensions (W x D x H) in
Shipping Weight (Lbs)
HYDRAR15-M2401MA 15 11.3 5 5 5 NA NA NA 54 / 62 5.42
HYDRAR18-M2401MA 18 13.5 4 5 4 5 NA NA 65 / 75 6.5
HYDRAR20-M2401MA 20 15.0 5 5 5 5 NA NA 72 / 83 7.22
HYDRAR24-M2401MA 24 18.0 4 5 5 5 5 NA 86 / 100 8.66
HYDRAR27-M2401MA 27 20.3 4 4 5 4 5 5 97 / 112 9.75
HYDRAR29-M2401MA 29 21.8 4 5 5 5 5 5 104 / 120 10.47
208/240V - 60Hz - 1
General information
65
85
8,2 x 11,3 x 21,4
11,2 x 11,3 x 21,4
1" NPT Female
1-1/4" NPT Female

9
Figure 3: Boiler Dimensions

10
Figure 4: Typical Diagram of a Single Zone Installation
Figure 5: Multizone Diagram with more than one Circulator

11
Figure 6: Multizone diagram with Motorized Valves

12
Figure 7: Electrical Diagram
**The jumper must remain connected in order to comply with the Canadian Energy Regulations.

13
SECTION 6 : REPLACEMENT PARTS
Figure 8: Exploded View

14
Table 3: Parts list
Item
Description
Comments
B03984-03
Cover ass'y
Cover, cosmetic and
wiring diagram
R02L006
Tridicator
G11F025
Relief valve 30# 3/4m x 3/4f
G08F005
Adaptator 1 x 3/4
G01G001
Standard nipple 1/4" NPT x 4"
G03F001
Coppling 1/4" NPT
G16G004
Cap 1/4" NPT
B04237-02
Element remplacement kit
Element 4 kw and gasket
B04237-03
Element remplacement kit
Element 5 kw and gasket
B03970
Sealing gasket element
B03952
Wall support
B04201
Machine support
L01J001
Breaker 15amp
G11Z002
Drain faucet 3/4m
L99F006
Terminal bloc
B04184-01
Aquastat assembly (Control) T~)
B04184
Aquastat assembly (Hi-limit)
R99G006
Rectifier control
L01H030
Relay DPST 22VDC
R99G007
Rectifier / Temporisator control
L01H009
Relay 24vac
L01F010
Transformer 208/240/24