Winterwarm TYPE WWH Unit Air Heater Instruction Manual
- June 13, 2024
- Winterwarm
Table of Contents
Winterwarm TYPE WWH Unit Air Heater
THIS DOCUMENTATION MUST ABSOLUTELY BE READ BEFORE STARTING THE INSTALLATION. INSTRUCT USER AND LEAVE THIS DOCUMENT WITH HEATER FOR REFERENCE.
General
This user’s guide is meant for the installer and if necessary for the user. It’s a reference to operation and installation of the WWH heater.
Description
The WWH is an effective in-direct fired heater. The heat exchanger consist of
copper tubes and aluminium fins. This is an approved design for an optimal
heat exchange. The grill has been designed to accomplish an optimal air
displacement at the lowest possible sound level. With a 5-stage switch is it
possible to reduce the air output and noise level.
Function
The WWH is in fact a radiator with a fan on the back. When hot water is pumped
through the radiator, and the fan is on, the heater will blow hot air. The
heater will give no heat when the fan is off, no matter there is hot water
running through the radiator. The heater requires a control (thermostat) to
arrange the supply of hot water and to switch the fan on/off. There are
several options for control, this will be described later in this manual. For
a better air distribution it’s always better to choose 2 or more heaters
instead of 1 heater. For example, it’s better to select two 30kW heaters,
instead of one 60kW heater.
Matching capacity hot water boiler and WWH
In case the capacity of the boiler is higher than that of the WWH, the boiler
won’t be able to release all the heat produced. This will cause the boiler to
go on and off (commute). As a consequence of this the installation won’t be
able to reach the temperature demanded. For small installations it is
advisable to select a WWH which has an higher output than the boiler itself.
Guarantee
Operation and /or installation of appliances not according to this manual can
imply invalidation of guarantee.
Technical
Table with data
The WWH is available in 8 models with capacities that differ from 10 to 80 kW.
The range of 10-80 kW heaters is subdivided in 3 basic sizes. The type number
of the appliance starts with the housing model (1,2 and 3). See table below
for exact measurements.
Type| 110| 115| 120| 230| 235| 245|
350| 365| 380
---|---|---|---|---|---|---|---|---|---
Modeltype| 1| 1| 1| 2| 2| 2| 3| 3| 3
A| 510,5| 510,5| 510,5| 692,5| 692,5| 692,5| 863,5| 863,5| 863,5
B| 509| 509| 509| 693| 693| 693| 864| 864| 864
C| 46,5| 46,5| 44| 34| 34| 42| 33| 33| 34
D| 435,5| 435,5| 435,5| 585| 585| 585| 756| 756| 756
E| 435| 435| 435| 585| 585| 585| 756| 756| 756
F| 3/4”| 3/4”| 3/4”| 3/4”| 3/4”| 1”| 1”| 1”| 1”
G| 91,75| 91,75| 72,75| 93,5| 93,5| 82,75| 107,25| 107,25| 93,75
H| 327| 327| 346| 504,5| 504,5| 515,5| 652| 652| 666,5
I| 91,75| 91,75| 91,75| 94,5| 94,5| 94,25| 104,25| 104,25| 103,25
J| 320| 320| 320| 363| 363| 363| 357,5| 357,5| 357,5
K| 45| 45| 45| 83| 83| 83| 66,8| 66,8| 66,8
L| 70| 70| 69| 86| 86| 86| 93| 93| 86,5
M| 39| 39| 44| 43,5| 43,5| 45| 35| 35| 45,5
N| 54,5| 54,5| 54,5| 76,5| 76,5| 76,5| 87| 87| 87
O| 160| 160| 160| 160| 160| 160| 160| 160| 160
P| 80| 80| 80| 101| 101| 101| 78| 78| 78
Q| 254,5| 254,5| 254,5| 346,5| 346,5| 346,5| 432| 432| 432
R| 160| 160| 160| 181| 181| 181| 158| 158| 158
Type| Unit| 110| 115| 120| 230| 235|
245| 350| 365| 380
---|---|---|---|---|---|---|---|---|---|---
Heating capacity (90/70)| kW| 11,4| 14,9| 17,6| 25,2| 32,2| 42,7| 47|
59,3| 72,1
Air output| m3/hr| 1200| 1900| 1500| 2800| 4300| 3800| 5400| 8200| 6300
Throw horizontal| m| 10| 14| 12| 19| 22| 19| 20| 25| 21
Throw vertical| m| 3,5| 5| 4| 6| 7| 6| 7| 8| 7
Electrical supply| V| 230| 230| 230| 230| 230| 230| 230| 230| 230
Consumed current (max)| A| 0,6| 1,2| 1,2| 0,8| 1,7| 1,7| 2,4| 2,6| 2,6
Power consumption| W| 110| 170| 170| 165| 365| 365| 540| 600| 600
Weight (incl. water)| kg| 20| 20| 21| 31| 31| 32| 44| 61| 65
Water connection (ext.)| G| ¾| ¾| ¾| ¾| ¾| 1| 1| 1| 1
Water sided pressure loss| kPa| 2| 3| 3| 3| 3| 5| 4| 5| 9
Recommended suspension
height
| m| 2,5| 2,5| 2,5| 2,5| 2,5| 2,5| 2,5| 2,5| 2,5
Noise level (5 m. in front of
heater)
| dB(A)| 50| 59| 58| 52| 57| 56| 58| 58| 58
User’s restrictions
- Work pressure: Max. 5 bar
- Water temperature: Max. 100⁰C Min. 4⁰C (freezing danger!)
- Environment temperature: Max. 40⁰C Min. 4⁰C (freezing danger!)
- Protection grade: IP54
Note: Frost can cause the internal copper tubes in the exchanger to burst, the exchanger will leak. No warranty on this.
Pre-check
Before installing the heater, please check if the heater is in accordance with
the order, and whether it suites the local and present provisions (electrical
supply etc.). The heater also has to meet local and national legislations.
After installation ensure that the appliance is no hazard for persons or can
cause damage in terms of moisture, dust, inflammable or corrosive gases, smoke
and/or combustible materials. The competent installer must make sure that the
heater functions correctly and must instruct the user about safe operation of
the heater.
Installation
Suspension
The WWH is provided with 8 M10 suspension points on the side panels. Use
preferably the specially designed cantilever brackets or the ceiling mounting-
set. Take care that the heater is placed stable and that there is no tension
on the water sided connections. Wall setup: The pipe connections for water
should always be horizontal, with a view to venting of the internal pipes. The
heater can be turned over slightly, but the heater may absolutely not hang
askew. Place the heater in such manner that, the return connection (cold
water) is at the lowest point. It’s important to place the venting in the duct
near the heater. Ceiling setup: Again the pipe connections to the heater
should be horizontal, to enable venting of the internal tubes. To avoid
draught place the heater high enough (minimum 2,5m). If necessary use our
outlet cone or the 4-way down flow plenum. Application of a plenum will
decrease the throw with factor 4.
Blow-out options
The outlet grill can easily be taken off, turned around and replaced, to direct the discharge in any desirable direction. Attention: When replacing the grill, always use the same screws (or screws of same length). A longer screw could pierce the exchanger! See to it that the discharge is not blocked and that the heater has a free suck. Make sure that there’s sufficient circulation of air in the room (enough ventilation) without the airstream being considered as draft. Heaters suspended to the wall should always blow in direction of the cold regions.
Water connections
Connections for hot water supply and return (two times ¾ inch or two times 1
inch) are marked with a red and a blue sticker. Red is water supply and blue
is water return. Do not twist these connections, the heater will not give the
desired output. The WWH is not provided with a standard venting. There is the
possibility to place one when it is desired. Prevent mechanical tension on the
connections, this will cause leakage.
Warning: Prevent damage to the heater, hold the connections with pliers to avoid twisting of welded parts of the connections. Do not put excessive force! Internal welds may break and cause leakage.
Electrical connection
230Vac supply
The installation must comply with all applicable local and/or national
standards i.e. NEN 1010. There should be a suitable electrical group with a
main fuse. There is an electrical diagram further on in this guide. The supply
is 230Vac (50 Hz) with earth.
Isolation switch or power plug
The heater has to be equipped with a 230 Volt isolation switch or power
plug. This switch should disconnect phase and neutral (not earth) and have a
3mm contact opening at least. Switches or power plugs must be accessible at
all times. 4.2
General functioning of the unit
The WWH is simply described as a radiator with a ventilator at the back. If
there is hot water flowing through the radiator, and the heater is on, the
heater will blow hot air. But when hot water is flowing through the radiator
and the heater is off, the heater will not discharge hot air. If the fan is
turned on, but the boiler water is cold, there could be a draught. This must
be prevented.
The installation should have some kind of control to make turning on/off the
hot water boiler and the fan of the WWH separately, possible. The WWH and the
boiler are 2 separate systems. Both systems need to be controlled. There are
several ways to do this. It depends on the situation and needs of the user,
what combination of controls will work best.
Connecting options
Connection with only a room thermostat
This option is only possible when there is a continues hot water supply. The hot water boiler should have its own control.
Operation: The on/off room thermostat will switch on the fan of the WWH
when there is heat demand. The fan will blow air over the heat exchanger. If
the water is hot, the heater will discharge hot air. If the water is cold the
heater will blow cold air, this can be experienced as draught. The boiler must
be switched on/off separately. Therefore a second room thermostat is required
.
Connection with room thermostat combined with contact thermostat
This option is applied when the boiler is controlled by its own thermostat and
there is a continues hot water supply.
Operation:
The on/off thermostat will switch when there is heat demand. The contact
thermostat will not close (connect) before the water has reached the pre-set
temperature. In this situation, the fan of the WWH will transport hot air.
This will prevent draught. The boiler must be turned on and off separately
.
Connection with contact thermostat
This option is applied if the thermostat of the boiler is in the same room as
the WWH. Operation: The contact thermostat will close if the water has reached
the pre-set temperature. In this situation the WWH will only discharge hot
air. The boiler thermostat will switch on the boiler. The boiler will pump hot
water around. The contact thermostat of the WWH will close if the water is hot
enough. The fan will blow hot air into the room. If the boiler is shut off by
the boiler thermostat, the water will cool down and the contact thermostat
will open (disconnect) and will cause the WWH to stop blowing.
Combinations with a 5-step switch
To reduce the noise level of the WWH, it’s possible to install an optional
5-step switch. This switch will regulate the fan speed of the WWH. Please note
that if the fan speed is lower, the heat discharge of the heater will be lower
as well. This guide contains tables (in the back) displaying heat discharges
at various fan speeds.
- 5-step switch with a room thermostat
- 5-step switch in combination with a room thermostat and contact thermostat
- 5-step switch with contact thermostat
Connection with zone valve
The zone valve is applied on the WWH when one boiler has to heat several rooms
separately. In this situation the zone-valve will control the hot water boiler
and hot water supply to the WWH. Operation in short can be summarized as
follows:
- Heat demand is created through the room thermostat. RT switches 230Volt and powers the zone-valve, this will switch the boiler on.
- Boiler makes hot water.
- Contact Thermostat measures water temperature. If water temperature is higher than the temperature set, CT will supply power to the WWH. The fan will blow. If an optional 5-stage switch has been applied, the current will first be transformed to the voltage desired, the fan will turn faster/slower.
- If temperature requested has been reached, the RT will open the contact and cut off power supply to the zone-valve; the boiler will be shut off eventually.
- CT measures a water temperature that is lower than the temperature set and will open the contact. The fan will stop!
Maintenance and operation
Causion:
Make sure that you have turned off the power group that you are working on.
The heater must be earthed.
Maintenance
Especially in dusty spaces, it’s important to clean the heater regularly. If
the heat exchanger is heavily covered by dust-traps it will not displace the
heat sufficiently. Use a vacuum cleaner or compressed air. Avoid damage to the
fins. Clean also the fan and the fan grill.
Safe operation
The heater is controlled by the room thermostat and/or the 5-stage switch if
there is one connected to it. There are no controls on the heater itself.
Depending on the installation, the user can make following settings:
- Control main or isolation switch
- Turn up and down room thermostat
- Turn up and down contact thermostat
- Change fan speed with 5-stage switch
Adjusting direction of the air outlet is normally no user’s action, this is done by the installer.
Frost damage
ATTENTION: frost damage!
Do not set the room thermostat lower than 5°C. Freezing of the exchanger or
the tubes, will cause irrevocable damage to the installation. A constant
supply of hot water from the boiler must be ensured. Frost damage will exclude
warranty claims!
Water temperatures / air volumes
The conversion diagram shows heater capacities in KW under different conditions. These conditions may be:
- Water temperature, for example 90/70°C (Regime)
- Air temperature sucked by the fan (Air temp)
WWH capacity at various water temperatures
| Airtemperture | |
|---|---|
| Watertemperature | 0°C |
| 90/70°C | 1,30 |
| 80/60°C | 1,11 |
| 70/50°C | 0,92 |
| 60/40°C | 0,73 |
| 50/30°C | 0,54 |
Example
What is the capacity of a WWH 235 at a water temperature of 80/60 degrees
in a room where it is 10 degrees? The table in section 2.1 shows the capacity
of the WWH 235 at 90/70 degrees and a room temperature of 15 degrees. This is
27.7 kW.
Type| | 110| 115| 120| 230| 235| 245|
350| 365| 380
---|---|---|---|---|---|---|---|---|---|---
Heating capacity (90/70)| kW| 11,7| 14,7| 19,5| 22,8| 27,7| 38,7| 48,2|
54,4| 76,8
Air displacement| m3/hr| 1400| 2200| 1900| 2600| 3850| 3450| 6600| 8450|
7600
Throw horizontally| m| 10| 14| 12| 19| 22| 19| 20| 25| 21
Throw vertically| m| 3,5| 5| 4| 6| 7| 6| 7| 8| 7
Connection voltage| V| 230| 230| 230| 230| 230| 230| 230| 230| 230
Current| A| 0,3| 0,7| 0,7| 0,8| 1,4| 1,4| 2,0| 2,4| 2,5
Power| W| 79| 164| 153| 175| 310| 326| 450| 561| 563
Weight (incl. water)| kg| 20| 20| 21| 31| 31| 32| 44| 61| 65
Water connection| G| ¾| ¾| ¾| ¾| ¾| 1| 1| 1| 1
Water pressure drop| kPa| 2| 3| 3| 3| 3| 5| 4| 5| 9
Minimum height| m| 2,5| 2,5| 2,5| 2,5| 2,5| 2,5| 2,5| 2,5| 2,5
Noise level (5m)| dB(A)| 50| 59| 58| 51| 61| 60| 62| 58| 56
At a regime of 80/60 degrees and an ambient temperature of 10 degrees, the conversion factor according to the above table in section 6.1 is: 0.91.
| Air temperature | |
|---|---|
| Water temperature | 0°C |
| 90/70°C | 1,30 |
| 80/60°C | 1,11 |
| 70/50°C | 0,92 |
| 60/40°C | 0,73 |
| 50/30°C | 0,54 |
Het afgegeven vermogen zal dus 0,91×27,7 kW = 25,2 kW zijn.
Disposal & recycling
Waste processing
The symbol on the material, accessories or packaging indicates that this
product may not be treated as household waste. Dispose of the device via the
collection point for the recycling of waste electrical and electronic
equipment within the EU and in other European countries that have separate
collection systems for used electrical and electronic equipment. By disposing
of the device correctly, you will help prevent potential environmental and
human health hazards that could otherwise be caused by mishandling the waste
device. Recycling materials contributes to the conservation of natural
resources. Therefore, do not dispose of your old electrical and electronic
equipment with household waste.
References
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